WO2021125287A1 - Power control system, power control device, computer program for power control, and power control method - Google Patents

Power control system, power control device, computer program for power control, and power control method Download PDF

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Publication number
WO2021125287A1
WO2021125287A1 PCT/JP2020/047239 JP2020047239W WO2021125287A1 WO 2021125287 A1 WO2021125287 A1 WO 2021125287A1 JP 2020047239 W JP2020047239 W JP 2020047239W WO 2021125287 A1 WO2021125287 A1 WO 2021125287A1
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WO
WIPO (PCT)
Prior art keywords
power
output
renewable energy
generation device
power generation
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PCT/JP2020/047239
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French (fr)
Japanese (ja)
Inventor
道彦 犬飼
喜久雄 高木
小林　武則
博明 松本
道彦 稲葉
良介 浅野
Original Assignee
株式会社 東芝
東芝エネルギーシステムズ株式会社
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Application filed by 株式会社 東芝, 東芝エネルギーシステムズ株式会社 filed Critical 株式会社 東芝
Priority to JP2021565652A priority Critical patent/JP7263555B2/en
Publication of WO2021125287A1 publication Critical patent/WO2021125287A1/en

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/66—Regulating electric power
    • G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects

Definitions

  • the present embodiment relates to a power control system, a power control device, a computer program for power control, and a power control method for controlling the output power of a natural energy power generation device that generates power by natural energy.
  • renewable energy power generation equipment that generates electricity from natural energy such as solar power generation and wind power generation is progressing.
  • renewable energy generators are connected to the power system.
  • a power control system that controls a power system including a renewable energy power generation device is known.
  • the output power of renewable energy power generation equipment such as solar power generation and wind power generation fluctuates from moment to moment due to the influence of weather conditions such as solar radiation and wind speed.
  • the response speed characteristics of the output power of thermal power, hydraulic power, nuclear power generation equipment, and renewable energy power generation equipment are different from each other. For this reason, there is a problem that it may be difficult to perform stable control because the electric powers output from the power generation devices such as thermal power, hydraulic power, and nuclear power and the renewable energy power generation devices interfere with each other. If the power system is not controlled in a stable manner, the quality of the power supplied to the load may deteriorate.
  • An object of the present embodiment is to provide a power control system, a power control device, a computer program for power control, and a power control method capable of stably controlling a power system including a renewable energy power generation device.
  • the power control system of the present embodiment is characterized by having the following configuration.
  • a renewable energy power generation device that generates electric power from natural energy and supplies electric power to the electric power system.
  • a power control device having the following configuration.
  • (2-1) Maximum power detecting means for detecting the maximum power output from the renewable energy power generation device.
  • (2-2) A system information detecting means for detecting system information related to the electric power of the power system.
  • (2-3) An output that is equal to or less than the maximum power to be output to the renewable energy power generation device based on the maximum power detected by the maximum power detecting means and the system information detected by the system information detecting means.
  • Output power command means for calculating and instructing power.
  • the output power commanding means determines.
  • the renewable energy power generation device is instructed to suppress the output power to reduce the output power.
  • Block diagram showing the configuration of the power control system according to the first embodiment Block diagram showing the configuration of the power control device according to the first embodiment Block diagram showing the configuration of the renewable energy power generation device according to the first embodiment
  • the figure which shows the program flow of the power control apparatus which concerns on 1st Embodiment The figure explaining the operation concerning MPPT (maximum power point tracking) of the renewable energy power generation apparatus which concerns on 1st Embodiment.
  • the figure explaining the calculation method of the target power by the power control device which concerns on 1st Embodiment The figure explaining another calculation method of the target power by the power control device which concerns on 1st Embodiment
  • Output power information A1 (information on output power P1 of renewable energy power generation device 3) Maximum power information A2 (information on maximum power P2 of renewable energy power generation device 3) System information B1 (information on the power of the power system 9 transmitted from the power measuring device 4) System information B2 (information on the power of the power system 9 transmitted from the center device 8) Higher-level command C1 (command transmitted from the center device 8) Target power command D1 (command of target power P3 for renewable energy power generation device 3) Measurement target selection information E1 (information on the renewable energy power generation device to be measured for the maximum power P2) Command target selection information E2 (information on renewable energy power generation equipment that is the target of the target power command D1) Output power P1 (power output from renewable energy power generation device 3) Maximum power P2 (maximum power that can be output from the renewable energy power generation device 3) Target power P3 (target power to be output to the renewable energy power generation device 3) Different
  • the power control system 1 will be described as an example of the present embodiment with reference to FIGS. 1 to 3.
  • the present embodiment when there are a plurality of devices and members having the same configuration, they are given the same number and described, and when each device and member having the same configuration are described, they are common. Distinguish by adding an alphabetical subscript to the number.
  • the electric power control system 1 has, for example, an electric power control device 2, six renewable energy power generation devices 3, and six electric power measuring devices 4.
  • the six renewable energy power generation devices 3a, 3b, 3c, 3d, 3e, and 3f are electrically connected to the power system 9 via the cable 7.
  • the six power measuring devices 4a, 4b, 4c, 4d, 4e, and 4f are electrically connected to and arranged with the renewable energy power generation devices 3a, 3b, 3c, 3d, 3e, and 3f, respectively.
  • the power control device 2 is connected to the power measuring devices 4a, 4b, 4c, 4d, 4e, and 4f via the communication line 5a. Further, the power control device 2 is connected to the renewable energy power generation devices 3a, 3b, 3c, 3d, 3e, and 3f via the communication line 5b. Further, the power control device 2 is connected to the center device 8 which is a higher-level control device via the communication line 5c.
  • the power control device 2 transmits the output power information A1 which is the information of the output power P1 output from the renewable energy power generation device 3 and the system information B1 which is the power information of the power system 9 from the power measuring device 4 to the communication line 5a. Receive via.
  • the power control device 2 receives the system information B2, which is the power information of the power system 9, and the higher-level command C1 from the center device 8 via the communication line 5c.
  • the power control device 2 receives the maximum power information A2, which is the information of the maximum power P2 that can be output from the renewable energy power generation device 3, from the renewable energy power generation device 3 via the communication line 5b.
  • the power control device 2 transmits the target power command D1, which is a command of the target power P3 to be output to the renewable energy power generation device 3, to the renewable energy power generation device 3 via the communication line 5b.
  • the renewable energy power generation device 3 is a power supply device that generates electric power by receiving solar energy or wind power which is renewable energy.
  • the power control system 1 includes, as an example, a renewable energy power generation device 3a, 3b, 3c, 3d, 3e, 3f, which is a photovoltaic power generation device.
  • the renewable energy power generation devices 3a, 3b, 3c, 3d, 3e, and 3f are electrically connected in parallel by the cable 7.
  • the renewable energy power generation devices 3a, 3b, 3c, 3d, 3e, and 3f supply the generated power to the power system 9 via the cable 7.
  • the renewable energy power generation device 3 is installed at an outdoor solar power generation site or the like.
  • the renewable energy power generation device 3 is connected to the power control device 2 via the communication line 5b.
  • the renewable energy power generation device 3 includes a power generation unit 31, a power conversion unit 32, and a control unit 33.
  • the power generation unit 31 is composed of a solar panel and converts the received sunlight into DC power.
  • the converted DC power is supplied to the power conversion unit 32.
  • the power generation unit 31 may be composed of a wind power generation unit.
  • the power conversion unit 32 is composed of a conversion circuit such as an inverter having a switching element.
  • the power conversion unit 32 converts the DC power generated by the power generation unit 31 into AC power applied to the output power P1.
  • the AC power applied to the converted output power P1 is supplied to the power system 9 via the cable 7.
  • the power conversion unit 32 is controlled by the control unit 33.
  • the control unit 33 is composed of a control circuit such as a microcomputer.
  • the control unit 33 receives the target power command D1 which is a command of the target power P3 to the renewable energy power generation device 3 from the power control device 2 via the communication line 5b.
  • the control unit 33 controls the output power P1 output from the power conversion unit 32 based on the target power command D1.
  • control unit 33 incorporates a maximum power measurement module N1 configured by software that controls the power conversion unit 32.
  • the maximum power measurement module N1 detects the maximum power P2 that can be output from the renewable energy power generation device 3.
  • the maximum power P2 is detected by MPPT (maximum power point tracking) that sequentially changes the output voltage of the renewable energy power generation device 3 and detects the maximum power.
  • the maximum electric power P2 for each renewable energy power generation device 3 is transmitted to the power control device 2 via the communication line 5b.
  • the power measuring device 4 is a power measuring device composed of circuits for measuring power, voltage, current, and frequency.
  • the power measuring device 4 is connected to the power control device 2 via the communication line 5a.
  • the power measuring device 4 measures the output power P1 and the output voltage V1 output from the renewable energy power generation device 3, and transmits the output power information A1 which is the output power information of the renewable energy power generation device 3 to the power control device 2.
  • the power measuring device 4 measures the frequency f of the power system 9 and transmits it to the power control device 2 as system information B1 which is information on the power of the power system 9.
  • the power measuring devices 4a to 4f are electrically connected to and arranged in the renewable energy power generation devices 3a to 3f, respectively.
  • the power measuring device 4a measures the output power P1a and the output voltage V1a output from the renewable energy power generation device 3a, and transmits the output power information A1a to the power control device 2.
  • the power measuring devices 4b to 4f measure the output powers P1b to P2f and the output voltages V1b to V1f output from the renewable energy power generation devices 3b to 3f, respectively, and transmit the output power information A1b to A1f to the power control device 2. ..
  • the center device 8 is a higher-level control device configured by a computer or the like.
  • the center device 8 is connected to the power control device 2 via the communication line 5c.
  • the center device 8 is installed in a command room such as a power supply command center, a system control center, or a centralized control center that monitors and controls the power system.
  • the center device 8 transmits system information B2, which is information on the power of the power system 9, and higher-level command C1, which is a command to the renewable energy power generation device 3, to a plurality of power control devices 2 arranged at each photovoltaic power generation site or the like. Then, control the generated power of each photovoltaic power generation site.
  • the system information B2 includes information on the voltage, current, frequency, etc. of the power system 9, information on the required power of the power system 9, and information on the supplied power.
  • the communication lines 5a, 5b, and 5c are composed of a dedicated line, a communication line such as the Internet, and a communication line such as a telephone line. Communication between the power measuring device 4 and the power control device 2 is performed by the communication line 5a. Communication between the power control device 2 and the renewable energy power generation device 3 is performed by the communication line 5b. Communication between the power control device 2 and the center device 8 is performed by the communication line 5c.
  • the cable 7 is composed of a power cable.
  • the cable 7 electrically connects the renewable energy power generation device 3 and the electric power system 9.
  • the cable 7 supplies the electric power output from the renewable energy power generation device 3 to the electric power system 9.
  • the power system 9 is a power supply network that supplies AC power.
  • the power system 9 supplies the power output from the renewable energy power generation device 3 and the power generated by a power generation device such as thermal power, hydraulic power, or nuclear power (not shown in the figure) to the consumer.
  • the power control device 2 is a device configured by a computer or the like.
  • the power control device 2 is installed in a power management room or the like that monitors and controls a photovoltaic power generation site or the like.
  • the power control device 2 is connected to the power measuring devices 4a, 4b, 4c, 4d, 4e, and 4f via the communication line 5a.
  • the power control device 2 is connected to the renewable energy power generation device 3a, 3b, 3c, 3d, 3e, 3f via the communication line 5b.
  • the power control device 2 is connected to the center device 8 which is a higher-level control device via the communication line 5c.
  • the power control device 2 receives the output power information A1 which is the information of the output power P1 output from the renewable energy power generation device 3 and the system information B1 which is the power information of the power system 9 from the power measuring device 4.
  • the power control device 2 receives the maximum power information A2 related to the maximum power P2 that can be output from the renewable energy power generation device 3 from the renewable energy power generation device 3.
  • the power control device 2 receives the system information B2 and the upper command C1 from the center device 8.
  • the power control device 2 transmits the target power command D1 which is a command of the target power P3 which is the target power to be output to the renewable energy power generation device 3 to the renewable energy power generation device 3.
  • the power control device 2 has a communication unit 21, a communication unit 22, a communication unit 23, an output unit 24, a storage unit 25, and a calculation unit 26.
  • the communication unit 21 is composed of a communication interface with a communication line such as a dedicated line, the Internet, and a telephone line.
  • the communication unit 21 is connected to the calculation unit 26 inside the power control device 2.
  • the communication unit 21 is connected to the power measuring devices 4a to 4f via the communication line 5a.
  • the communication unit 21 receives the output power information A1 from the power measuring device 4 selected from the power measuring devices 4a to 4f.
  • the output power information A1 includes information on the output power P1 and the output voltage V1 output from the renewable energy power generation device 3 connected to the power measuring device 4.
  • the communication unit 21 receives the system information B1 which is the power information of the power system 9 from the power measuring device 4 selected from the power measuring devices 4a to 4f.
  • the system information B1 includes information regarding the frequency f1 applied to the power of the power system 9.
  • the communication unit 22 is composed of a communication interface with a communication line such as a dedicated line, the Internet, and a telephone line.
  • the communication unit 22 is connected to the calculation unit 26 inside the power control device 2.
  • the communication unit 22 is connected to the center device 8 via the communication line 5c.
  • the communication unit 22 receives the system information B2 and the higher-level command C1 from the center device 8.
  • the higher-level command C1 includes a command for increasing or decreasing the output power of the renewable energy power generation device 3, and an amount of increase or decrease.
  • the communication unit 23 is composed of a communication interface with a communication line such as a dedicated line, the Internet, and a telephone line.
  • the communication unit 23 is connected to the calculation unit 26 inside the power control device 2. Further, the communication unit 23 is connected to the renewable energy power generation devices 3a to 3f via the communication line 5b.
  • the communication unit 23 receives the maximum power information A2, which is the information of the maximum power P2 that can be output from the natural energy power generation device 3, from the natural energy power generation device 3 selected from the natural energy power generation devices 3a to 3f. ..
  • the communication unit 23 transmits the target power command D1 which is a command of the target power P3 to be output to the renewable energy power generation device 3 to the renewable energy power generation device 3 selected from the renewable energy power generation devices 3a to 3f.
  • the output unit 24 is composed of a display device, a printer, a communication interface, and the like.
  • the output unit 24 is connected to the calculation unit 26 inside the power control device 2.
  • the output unit 24 displays, prints, and displays the differential power P4, which is the difference between the output power P1 output from the renewable energy power generation device 3 and the maximum power P2 that can be output from the renewable energy power generation device 3. Output by.
  • the storage unit 25 is composed of a storage medium such as a semiconductor memory or a hard disk.
  • the storage unit 25 is connected to the calculation unit 26 inside the power control device 2.
  • the storage unit 25 has maximum power information A2 which is information on the maximum power P2 that can be output from the renewable energy power generation device 3, system information B1 and system information B2 which is information on the power of the power system 9, and the renewable energy power generation device.
  • the target power command D1, which is a command of the target power P3 with respect to 3, is sequentially stored for each renewable energy power generation device 3.
  • the storage unit 25 selects the command target, which is the information of the renewable energy power generation device 3 which is the command target of the measurement target selection information E1 and the target power command D1 which are the information of the renewable energy power generation device 3 which is the measurement target of the maximum power P2. Information E2 is stored. The writing and reading of data to the storage unit 25 is controlled by the calculation unit 26.
  • the calculation unit 26 is composed of a CPU or the like built in the computer.
  • the calculation unit 26 is connected to the communication unit 21, the communication unit 22, the communication unit 23, the output unit 24, and the storage unit 25 inside the power control device 2.
  • the calculation unit 26 performs the following control.
  • (B) Control for communication unit 21 The calculation unit 26 controls the communication unit 21, and the power information A1 and the power information of the power system 9 which are the information of the output power P1 of the renewable energy power generation device 3 from the power measurement device 4. The system information B1 is received.
  • (B) Control for communication unit 22 The calculation unit 26 controls the communication unit 22 and receives system information B2 and higher-level command C1 from the center device 8.
  • (C) Control for communication unit 23 The calculation unit 26 controls the communication unit 23 and receives the maximum power information A2 which is the information of the maximum power P2 of the renewable energy power generation device 3 from the renewable energy power generation device 3. The calculation unit 26 controls the communication unit 23 and transmits the target power command D1 which is a command of the target power P3 to the renewable energy power generation device 3 to the renewable energy power generation device 3.
  • (D) Control for output unit 24 The calculation unit 26 controls the output unit 24, and the output power P1 output from the renewable energy power generation device 3 and the maximum power P2 that can be output from the natural energy power generation device 3
  • the differential power P4 which is the difference, is output by display, printing, and communication message.
  • (E) Control of the storage unit 25 The calculation unit 26 controls the storage unit 25 to obtain maximum power information A2, system information B1, system information B2, target power command D1, measurement target selection information E1, and command target selection information E2. , Write and read.
  • the calculation unit 26 in the calculation unit 26 includes an output adjustment module M1 composed of software, a difference calculation module M2, a measurement target selection module M3, a command target selection module M4, and a system information detection module M5.
  • the calculation unit 26 calculates the target power P3 to be output to the renewable energy power generation device 3 by the output adjustment module M1.
  • the target power P3 is calculated for the renewable energy power generation device 3 selected from the renewable energy power generation devices 3a to 3f, and is instructed to the renewable energy power generation device 3 selected by the target power command D1.
  • the calculation unit 26 detects the system information B1 and B2 related to the power of the power system 9 by the system information detection module M5.
  • the system information B1 is transmitted from the control unit 33 of the renewable energy power generation device 3.
  • the system information B2 is transmitted from the center device 8.
  • the calculation unit 26 calculates the differential power P4, which is the difference between the output power P1 output from the renewable energy power generation device 3 and the maximum power P2 that can be output from the natural energy power generation device 3, by the difference calculation module M2. ..
  • the calculated differential power P4 is output from the output unit 24 by display, printing, and communication telegram.
  • the calculation unit 26 selects the renewable energy power generation device 3 to be measured of the maximum power P2 that can be output from the renewable energy power generation devices 3a to 3f by the measurement target selection module M3.
  • the renewable energy power generation device 3 to be measured with the maximum power P2 is selected one or more from the renewable energy power generation devices 3a to 3f, and is stored in the storage unit 25 as the measurement target selection information E1. Further, based on the measurement target selection information E1, the maximum power information A2, which is the information of the maximum power P2, is received from the renewable energy power generation device 3 selected from the renewable energy power generation devices 3a to 3f.
  • the calculation unit 26 selects the renewable energy power generation device 3 to be the command target of the target power command D1 from the renewable energy power generation devices 3a to 3f by the command target selection module M4.
  • the renewable energy power generation device 3 to be commanded by the target power command D1 is selected one or more from the renewable energy power generation devices 3a to 3f, and is stored in the storage unit 25 as the command target selection information E2. Further, the target power command D1 which is a command of the target power P3 is transmitted to the renewable energy power generation device 3 selected from the renewable energy power generation devices 3a to 3f based on the command target selection information E2.
  • FIG. 4 is a diagram showing a flow of a program built in the power control device 2.
  • the program shown in FIG. 4 is built in the calculation unit 26 of the power control device 2.
  • the renewable energy power generation device 3 In the electric power control system 1, the renewable energy power generation device 3 generates electric power by natural energy and supplies electric power to the electric power system 9.
  • the control unit 33 of the renewable energy power generation device 3 incorporates the maximum power measurement module N1.
  • the control unit 33 of the renewable energy power generation device 3 measures the maximum power P2 that can be output from the renewable energy power generation device 3 by the maximum power measurement module N1, and includes the maximum power P2 in the maximum power information A2 for power control. It is transmitted to the device 2.
  • the control unit 33 of the renewable energy power generation device 3 sequentially changes the output voltage applied to the power output from the power conversion unit 32 by the maximum power measurement module N1, and detects the maximum power P2 by MPPT (maximum power point tracking). ..
  • the power control device 2 detects the maximum power P2 that can be output from the renewable energy power generation device 3 by receiving the maximum power information A2 from the natural energy power generation device 3.
  • the power control device 2 receives the maximum power information A2 by the communication unit 23.
  • the power control device 2 detects system information B1 and B2 regarding the power of the power system 9.
  • the calculation unit 26 of the power control device 2 receives the system information B1 from the control unit 33 of the renewable energy power generation device 3 and the system information B2 from the center device 8 by the built-in system information detection module M5. By receiving the system information B1 and B2, the power control device 2 detects information on the voltage, current, frequency, etc. of the power system 9, and information on the required power and the supplied power of the power system 9.
  • the power control device 2 calculates the target power P3 which is equal to or less than the maximum power P2 to be output to the renewable energy power generation device 3 based on the maximum power P2 required for the maximum power information A2, the system information B1 and the system information B2, and the natural energy. Instruct the power generation device 3.
  • the calculation unit 26 of the power control device 2 calculates the target power P3 by the built-in output adjustment module M1.
  • the power control device 2 is based on the system information B1 transmitted from the control unit 33 of the renewable energy power generation device 3 and the system information B2 transmitted from the center device 8, and the power of the power system 9 is within a predetermined frequency range. If it is determined that the power is not present, the renewable energy power generation device 3 is instructed to reduce the output power P1 to the target power P3.
  • the calculation unit 26 of the power control device 2 calculates the target power P3, which is less than the output power P1, by the built-in output adjustment module M1.
  • the power control device 2 transmits the target power P3 from the communication unit 23 to the renewable energy power generation device 3 according to the target power command D1, and instructs the target power P3.
  • the power control device. 2 gives an instruction to the renewable energy power generation device 3 to reduce the output power P1 to the target power P3 by transmitting the target power command D1.
  • ⁇ f1 may be referred to as being within the first frequency range.
  • the power control device 2 transmits an instruction to reduce the output power P1 to the target power P3 to the renewable energy power generation device 3 with the target power command D1. To be done by.
  • the power control device 2 calculates the differential power P4, which is the difference between the output power P1 output from the renewable energy power generation device 3 and the maximum power P2 that can be output from the natural energy power generation device 3, and the output unit 24 calculates the differential power P4. Output.
  • the calculation unit 26 of the power control device 2 calculates the difference power P4 by the difference calculation module M2.
  • the power control device 2 detects information related to the power of the power system 9 by the system information B1 transmitted from the control unit 33 of the renewable energy power generation device 3 and the system information B2 transmitted from the center device 8. When the power control device 2 determines that the power of the power system 9 is within a predetermined frequency range based on the system information B1 and B2, the power control device 2 can output the maximum power that can be output to the renewable energy power generation device 3. Instruct to output P2.
  • the power control device 2 gives an instruction to the renewable energy power generation device 3 to set the output power P1 to the maximum power P2 by transmitting the target power command D1.
  • ⁇ f2 may be referred to as being within the second frequency range.
  • the power control device 2 issues an instruction to set the output power P1 to the maximum power P2 to the target power command D1 to the renewable energy power generation device 3. It is done by sending.
  • the power control device 2 instructs some of the renewable energy power generation devices 3 among the plurality of renewable energy power generation devices 3 to output the power applied to the target power P3 by the target power command D1.
  • the calculation unit 26 of the power control device 2 selects a part of the renewable energy power generation devices 3 among the plurality of renewable energy power generation devices 3 as the target for instructing the target power command D1 by the command target selection module M4.
  • the power control device 2 detects the maximum power P2 of the selected renewable energy power generation device 3 from the plurality of renewable energy power generation devices 3.
  • the calculation unit 26 of the power control device 2 selects a part of the renewable energy power generation devices 3 to be measured of the maximum power P2 from the plurality of renewable energy power generation devices 3 by the measurement target selection module M3.
  • the above operation is realized by the program shown in FIG.
  • the program shown in FIG. 4 is built in the calculation unit 26 of the power control device 2.
  • the program shown in FIG. 4 is repeatedly executed at regular intervals.
  • the program shown in FIG. 4 is executed, for example, in a cycle of 5 minutes or 30 minutes.
  • the calculation unit 26 of the power control device 2 performs an operation related to power control of the renewable energy power generation device 3 according to the following procedure.
  • Step S01 Select the renewable energy power generation device 3 to be measured for the maximum power P2
  • the calculation unit 26 of the power control device 2 selects the renewable energy power generation device 3 to be measured for the maximum power P2 from the plurality of natural energy power generation devices 3 by the built-in measurement target selection module M3.
  • the renewable energy power generation device 3a located on the east side of the renewable energy site and the renewable energy power generation device 3d located on the west side are selected as the measurement targets of the maximum power P2.
  • the renewable energy power generation device 3 to be selected is not limited to this, and may be arbitrarily selected.
  • the renewable energy power generation devices 3a and 3d selected as the measurement target of the maximum power P2 are stored in the storage unit 25 as the measurement target selection information E1.
  • Step S02 Measure the maximum power P2
  • the calculation unit 26 of the power control device 2 detects the maximum power of the selected renewable energy power generation devices 3a and 3d based on the measurement target selection information E1 stored in the storage unit 25.
  • the calculation unit 26 of the power control device 2 receives the maximum power information A2, which is information on the maximum power P2 that can be output from the renewable energy power generation devices 3a and 3d, via the communication unit 23.
  • the maximum power P2 is measured at regular intervals, and the maximum power information A2 is transmitted to the power control device 2.
  • the electric power generated by the power generation unit 31 in the renewable energy power generation device 3 is converted from direct current to alternating current by the power conversion unit 32.
  • the control unit 33 controls the output power P1 of the power conversion unit 32.
  • the control unit 33 incorporates a maximum power measurement module N1 configured by software.
  • the control unit 33 measures the maximum power P2 that can be output from the renewable energy power generation device 3 by the maximum power measurement module N1.
  • the maximum power P2 is detected by MPPT (Maximum Power Point Tracking).
  • the output voltage of the power conversion unit 32 is sequentially changed by MPPT (maximum power point tracking) as shown in FIG. 5, and the maximum power is detected as the maximum power P2.
  • the maximum power P2 of the renewable energy power generation devices 3a and 3d is included in the maximum power information A2 and transmitted to the power control device 2 via the communication line 5b.
  • the calculation unit 26 of the power control device 2 receives the maximum power information A2 via the communication unit 23, and detects the maximum power P2 of the renewable energy power generation devices 3a and 3d.
  • Step S02 or the maximum power measuring module N1 in the program may be referred to as the maximum power detecting means.
  • Step S03 Receive system information B1 and system information B2
  • the calculation unit 26 of the power control device 2 detects system information B1 and B2 regarding the power of the power system 9.
  • the calculation unit 26 of the power control device 2 receives the system information B1 transmitted from the control unit 33 of the renewable energy power generation device 3 and the system information B2 transmitted from the center device 8 by the built-in system information detection module M5. , Detects information about the power of the power system 9.
  • the calculation unit 26 of the power control device 2 selects the natural energy power generation devices 3a and 3d from the natural energy power generation devices 3a to 3f, and the natural energy.
  • the system information B1a and B1d are received from the power measuring devices 4a and 4d connected to the power generation devices 3a and 3d, respectively.
  • the calculation unit 26 of the power control device 2 receives the system information B1a and B1d by the communication unit 21 via the communication line 5a.
  • the arithmetic unit 26 of the power control device 2 receives the system information B2 from the center device 8.
  • the arithmetic unit 26 of the power control device 2 receives the system information B2 by the communication unit 22 via the communication line 5c.
  • the received system information B1a, B1d, and system information B2 are stored in the storage unit 25.
  • the system information B1a and B1d include information on the frequency f applied to the power of the power system 9.
  • the system information B2 includes information on the voltage, current, frequency, etc. of the power system 9, information on the required power of the power system 9, and information on the supplied power.
  • Step S03 or the system information detection module M5 in the program may be referred to as system information detection means.
  • Step S04 Select the renewable energy power generation device 3 to be commanded by the target power P3
  • the calculation unit 26 of the power control device 2 selects the renewable energy power generation device 3 to be the target of the command to output the target power P3 from the plurality of renewable energy power generation devices 3 by the built-in command target selection module M4. To do.
  • the renewable energy power generation device 3 whose output power is averaged is selected from the renewable energy power generation devices 3a to 3f as the target of the command to output the target power P3. For example, two renewable energy power generators 3c and 3d that output a large amount of electric power are selected.
  • the renewable energy power generation device 3 to be selected is not limited to this, and may be arbitrarily selected.
  • the renewable energy power generation devices 3c and 3d selected as the target of the command to output the target power P3 are stored in the storage unit 25 as the command target selection information E2.
  • the renewable energy power generation device 3 to be commanded by the target power P3 may overlap with the renewable energy power generation device 3 to be measured by the maximum power P2.
  • Step S05 Determining whether the frequency f is within the predetermined frequency ⁇ f2)
  • step S03 based on the system information B1 and B2 detected by the system information detection module M5 and stored in the storage unit 25, the calculation unit 26 of the power control device 2 determines the frequency f of the power in the power system 9 in advance. It is determined whether or not the frequency is within the range of ⁇ f2.
  • the power frequency f in the power system 9 is in the range of f0 ⁇ f2 ⁇ f ⁇ f0 + ⁇ f2, the power frequency f in the power system 9 is within a predetermined frequency ⁇ f2 with respect to the reference frequency f0. Is judged.
  • f0- ⁇ f2 49.9 Hz
  • f0 + ⁇ f2 50.1 Hz
  • the power frequency f in the power system 9 is 49.9 Hz ⁇ f ⁇ 50.1 Hz
  • step S05 When it is determined that the frequency f is within the predetermined frequency range (YES in step S05), the program shifts to step S06. If it is not determined that the frequency f is within the predetermined frequency range (NO in step S05), the program proceeds to step S07.
  • Step S06 Instruct the renewable energy power generation device 3 to output the maximum power P2
  • the power control device 2 selects the natural power based on the command target selection information E2 stored in the storage unit 25 in step S04.
  • the energy power generation devices 3c and 3d are instructed to set the output power P1 to the maximum power P2 by the target power command D1.
  • the calculation unit 26 of the power control device 2 instructs the target power command D1 by the built-in output adjustment module M1.
  • the target power command D1 is transmitted to the renewable energy power generation devices 3a to 3f via the communication unit 23 and the communication line 5b.
  • the instruction to set the output power P1 to the maximum power P2 may be transmitted to all the renewable energy power generation devices 3a to 3f.
  • Step S07 Instruct the renewable energy power generation device 3 to output the target power P3
  • the calculation unit 26 of the power control device 2 is based on the command target selection information E2 stored in the storage unit 25 in step S04.
  • the selected renewable energy power generation devices 3c and 3d are instructed to output the power applied to the target power P3 by the target power command D1 which is a command of the output power.
  • the calculation unit 26 of the power control device 2 calculates the target power P3 to be applied to the target power command D1 by the built-in output adjustment module M1.
  • the target power command D1 is transmitted to the renewable energy power generation devices 3c and 3d via the communication unit 23 and the communication line 5b.
  • the target power P3 is calculated based on the maximum power P2 detected in step S02 and the system information B1 and B2 detected in step S03. It is estimated that the maximum powers P2a and P2d of the renewable energy power generation devices 3a and 3d are similar to the maximum power P2 of the renewable energy power generation devices 3b, 3c, 3e and 3f arranged at the same photovoltaic power generation site. Will be done. Therefore, the target power P3 for the renewable energy power generation devices 3c and 3d has a certain degree of certainty even if it is calculated based on the maximum powers P2a and P2d.
  • the power less than the maximum powers P2a and P2d detected by the renewable energy power generation devices 3a and 3d is calculated as the target power P3.
  • the target power P3 is calculated by subtracting a constant power ⁇ P from the maximum power P2 as shown in FIGS. 5 and 6. As shown in FIG. 6, the target power P3 is calculated for each time.
  • the target power P3 may be calculated so as to have a constant ratio with respect to the maximum power P2. As shown in FIG. 7, the target power P3 is calculated for each time.
  • the target power P3 calculated in step S07 is the target power P3k and the target power P3 calculated in step S11 described later is the target power P3j, it is desirable to calculate the target power P3k such that P3k> P3j.
  • Step S07 or the output adjustment module M1 in the program may be referred to as output power command means.
  • Step S08 Determine whether the higher command C1 has been received
  • the calculation unit 26 of the power control device 2 determines whether or not the higher command C1 has been received from the center device 8.
  • the higher-level command C1 is transmitted from the center device 8 to the calculation unit 26 via the communication line 5c and the communication unit 22.
  • the higher-level command C1 includes a command for increasing or decreasing the output power of the renewable energy power generation device 3, and an amount of increase or decrease.
  • step S08 If it is determined that the higher command C1 has been received (YES in step S08), the program proceeds to step S09. If it is not determined that the higher command C1 has been received (NO in step S08), the program proceeds to step S10.
  • Step S09 Instruct the renewable energy power generation device 3 to output the target power P3
  • the calculation unit 26 of the power control device 2 selects renewable energy power generation based on the command target selection information E2 stored in the storage unit 25 in step S04.
  • the devices 3c and 3d are instructed to output the power applied to the target power P3 by the target power command D1.
  • the calculation unit 26 of the power control device 2 calculates the target power P3 to be applied to the target power command D1 by the built-in output adjustment module M1.
  • the target power command D1 is transmitted to the renewable energy power generation devices 3c and 3d via the communication unit 23 and the communication line 5b.
  • the target power P3 is calculated based on the command for increasing or decreasing the output power included in the higher-level command C1 determined to have been received in step S08, and the amount of increase or decrease.
  • the higher-level command C1 instructs to increase the output power P1 of the renewable energy power generation device 3
  • the amount of increase applied to the higher-level command C1 is apportioned to the renewable energy power generation devices 3c and 3d to calculate the target power P3.
  • the renewable energy power generation devices 3c and 3d receive the target power command D1 and increase the output power P1 to the target power P3.
  • the reduction amount applied to the higher-level command C1 is apportioned to the renewable energy power generation devices 3c and 3d to calculate the target power P3. ..
  • the renewable energy power generation devices 3c and 3d receive the target power command D1 and reduce the output power P1 to the target power P3.
  • step S09 for instructing the renewable energy power generation device 3 to output the target power P3 is performed in preference to the operation related to steps S05 to S07.
  • Step S09 or the output adjustment module M1 in the program may be referred to as output power command means.
  • Step S10 Determine if the frequency f is within the predetermined frequency ⁇ f1
  • the calculation unit 26 of the power control device 2 determines the frequency f of the power in the power system 9 in advance based on the system information B1 and B2 detected by the system information detection module M5 and stored in the storage unit 25. It is determined whether or not the frequency is within the range of ⁇ f1.
  • the power frequency f in the power system 9 is in the range of f0 ⁇ f1 ⁇ f ⁇ f0 + ⁇ f1
  • the power frequency f in the power system 9 is within the range of the frequency ⁇ f1 predetermined with respect to the reference frequency f0. Is judged.
  • the power frequency f in the power system 9 is 49 Hz ⁇ f ⁇ 51 Hz
  • step S10 If it is not determined that the frequency f is within the predetermined frequency ⁇ f1 (NO in step S10), the program shifts to step S11. When it is determined that the frequency f is within the range of the predetermined frequency ⁇ f1 (YES in step S10), the program shifts to step S12.
  • Step S11 Instruct the renewable energy power generation device 3 to output the target power P3
  • the calculation unit 26 of the power control device 2 is stored in the storage unit 25 by the command target selection module M4 in step S04.
  • the selected renewable energy power generation devices 3c and 3d are instructed to output the power applied to the target power P3 by the target power command D1 which is a command of the output power.
  • the calculation unit 26 of the power control device 2 calculates the target power P3 to be applied to the target power command D1 by the built-in output adjustment module M1.
  • the target power command D1 is transmitted to the renewable energy power generation devices 3c and 3d via the communication unit 23 and the communication line 5b.
  • the target power P3 is set to be less than the output power P1 currently output from the renewable energy power generation devices 3c and 3d. Further, when the target power P3 calculated in step S07 is the target power P3k and the target power P3 calculated in step S11 is the target power P3j, it is desirable to calculate the target power P3j such that P3k> P3j.
  • the operation related to step S11 for instructing the renewable energy power generation device 3 to output the target power P3 is performed in preference to the operations related to steps S05 to S09.
  • the power generation devices such as thermal power, hydraulic power, and nuclear power in the power system 9 (not shown in the figure) have the frequencies of the power system 9. Is controlled to keep the frequency constant.
  • the frequency f of the electric power in the electric power system 9 is not in the range of f0- ⁇ f1 ⁇ f ⁇ f0 + ⁇ f1, for example, when it is not in the range of 49 Hz ⁇ f ⁇ 51 Hz, it is more stable due to a power generation device such as thermal power, hydraulic power, or nuclear power. It is inferred that frequency control is not performed.
  • the output power P1 of the renewable energy power generation device 3 fluctuates from moment to moment due to the influence of weather conditions such as solar radiation and wind speed. Further, the response speed characteristics of the output power of the power generation device such as thermal power, hydraulic power, nuclear power, and the renewable energy power generation device 3 are different from each other. For this reason, power generation devices such as thermal power, hydraulic power, and nuclear power and electric power output from the renewable energy power generation device 3 may interfere with each other, and frequency control by the power generation devices such as thermal power, hydraulic power, and nuclear power may not function efficiently. ..
  • the calculation unit 26 of the power control device 2 issues the target power command D1 to the renewable energy power generation devices 3c and 3d as shown in FIG.
  • the target power P3 gives an instruction to reduce the output power P1.
  • the calculation unit 26 of the power control device 2 still uses the renewable energy power generation device 3c. 3d is instructed to reduce the output power P1 by the target power P3 applied to the target power command D1.
  • the output electric power command means of the electric power control device 2 causes the renewable energy power generation apparatus 3 to reduce the output electric power P1 by the target electric power command D1. Gives an output power suppression instruction.
  • the target power P3 may be transmitted to all the renewable energy power generation devices 3a to 3f according to the target power command D1.
  • the renewable energy power generation devices 3a to 3f in which the target power P3 is instructed by the target power command D1 reduce the output power P1.
  • Step S11 or the output adjustment module M1 in the program may be referred to as output power command means.
  • Step S12 Calculate the differential power P4
  • the calculation unit 26 of the power control device 2 calculates the differential power P4.
  • the calculation unit 26 of the power control device 2 is the difference between the output power P1 output from the renewable energy power generation device 3 by the built-in difference calculation module M2 and the maximum power P2 that can be output from the natural energy power generation device 3.
  • a certain differential power P4 is calculated.
  • the differential power P4 is calculated for each of the renewable energy power generation devices 3a to 3f.
  • Step S13 Output the differential power P4
  • the calculation unit 26 of the power control device 2 causes the output unit 24 to output the data related to the differential power P4 calculated in step S12.
  • the output unit 24 displays, prints, and outputs the data related to the differential power P4 by a communication telegram.
  • the output data related to the differential power P4 is useful for billing charges by the operating company of the renewable energy power generation device 3.
  • Step S13 and the output unit 24 in the program may be referred to as output means.
  • the above is the operation of the power control system 1.
  • the frequency f is not within the range of the frequency ⁇ f3 whose frequency can be controlled by the power generation devices such as thermal power, hydraulic power, and nuclear power of the power system 9
  • the target power P3 is set to zero for the renewable energy power generation devices 3a to 3f.
  • the power command D1 may be transmitted.
  • the output power P1 of the renewable energy power generation device 3 is suppressed as the frequency f of the power system 9 is separated from the reference frequency f0.
  • the power control system 1 generates a natural energy power generation device 3 that generates power by natural energy and supplies power to the power system 9, and a maximum power P2 output from the natural energy power generation device 3.
  • the maximum power detecting means to be detected the system information detecting means for detecting the system information B1 and B2 related to the power of the power system 9, the maximum power P2 detected by the maximum power detecting means, and the system detected by the system information detecting means. Since it has an output power command means for calculating and instructing a target power P3 which is equal to or less than the maximum power P2 to be output to the renewable energy power generation device 3 based on the information B1 and B2, and a power control device 2 provided with the natural energy. It is possible to provide a power control system 1 capable of stably controlling a power system 9 including a power generation device 3.
  • the renewable energy power generation device 3 is instructed by the target power command D1 to output the target power P3, and outputs the output power P1 applied to the target power P3 which is equal to or less than the maximum power P2.
  • the output power P1 applied to the above can be output to the renewable energy power generation device 3.
  • the renewable energy power generation device 3 outputs an output power P1 which is equal to or less than the maximum power P2, and a steep request for an increase in the output power P1 is commanded by the center device 8 by the higher-level command C1.
  • the output power P1 can be easily increased.
  • the power control system 1 has the power of the power system 9 within a predetermined range of the first frequency ⁇ f1 based on the system information B1 and B2 detected by the system information detecting means. If it is determined that the power system does not exist, the output power command means (step S11 or the output adjustment module M1) instructs the renewable energy power generation device 3 to reduce the output power P1. Therefore, the power system including the renewable energy power generation device 3 It is possible to provide a power control system 1 capable of stably controlling 9.
  • the output power command means when it is determined that the power of the power system 9 is less than the predetermined first frequency range based on the system information B1 and B2 detected by the system information detecting means, the output power command means. Instructs the renewable energy power generation device 3 to suppress the output power P1 to reduce the output power P1. Therefore, the power control system 1 capable of stably controlling the power system 9 including the renewable energy power generation device 3. Can be provided.
  • the instruction for reducing the output power is called the renewable energy output power suppression instruction.
  • the output power P1 of the renewable energy power generation device 3 fluctuates from moment to moment due to the influence of weather conditions such as solar radiation and wind speed. Further, the response speed characteristics of the output power of the power generation device such as thermal power, hydraulic power, nuclear power, and the renewable energy power generation device 3 are different from each other. For this reason, power generation devices such as thermal power, hydraulic power, and nuclear power and electric power output from the renewable energy power generation device 3 may interfere with each other, and frequency control by the power generation devices such as thermal power, hydraulic power, and nuclear power may not function efficiently. ..
  • the renewable energy power generation device 3 When frequency control by power generation devices such as thermal power, hydraulic power, and nuclear power does not function efficiently, it is desirable to suppress the output power P1 of the renewable energy power generation device 3. Even when the power of the power system 9 is less than the predetermined first frequency range, the renewable energy power generation device 3 is instructed to reduce the output power P1, so that the output of the renewable energy power generation device 3 is output. It is possible to reduce the ratio of the electric power P1 in the electric power system 9 and secure stable frequency control by a power generation device such as thermal power, hydraulic power, or nuclear power. As a result, the electric power system 9 including the renewable energy power generation device 3 can be stably controlled.
  • the power control device 2 is detected by the output power P1 output from the renewable energy power generation device 3 based on the target power P3 instructed by the output power command means and the maximum power detecting means. Since it has an output means for calculating and outputting the differential power P4 with the maximum power P2, the data related to the output differential power P4 is useful for billing by the operating company of the renewable energy power generation device 3.
  • the power control device 2 has the power of the power system within a predetermined second frequency ⁇ f2 based on the system information B1 and B2 detected by the system information detecting means. If it is determined that there is, the output power command means instructs the renewable energy power generation device 3 to output at the maximum power, so that the output power P1 of the natural energy power generation device 3 is not suppressed to less than the maximum power P2. , The output power P1 of the renewable energy power generation device 3 can be efficiently supplied to the power system 9.
  • the maximum power detecting means of the power control device 2 detects the maximum power P2 of the predetermined natural energy power generation device 3 among the plurality of natural energy power generation devices 3, so that a large number of natural power generation devices 3 are detected.
  • the maximum power P2 can be easily measured without measuring the maximum power P2 of the energy power generation device 3. It is inferred that the maximum power P2 of the renewable energy power generation device 3 arranged at the same photovoltaic power generation site is similar.
  • the electric power control device 2 reduces the output electric power P1 with respect to the renewable energy power generation apparatus 3 in step S11. Suppression instructions were given. This is to reduce the ratio of the output power P1 of the renewable energy power generation device 3 in the power system 9 and to ensure stable frequency control by power generation devices such as thermal power, hydraulic power, and nuclear power.
  • the electric power reduced by the natural energy output electric power suppression instruction of the target electric power command D1 may be the average electric power in the time zone when the electric power supply and demand is performed.
  • the reduced power is the average power output from the renewable energy power generation device 3.
  • the time zone is a time width corresponding to the time interval in which the supply and demand of electric power is adjusted. The supply and demand adjustment of electric power is performed every time zone such as 30 minutes and 5 minutes.
  • the renewable energy output power suppression instruction of the target power command D1 is an instruction to reduce the average of the output power in the immediately preceding time zone from the average of the output power in the immediately preceding time zone in the power supply and demand adjustment.
  • the output power reduced by the renewable energy output power suppression instruction is the average power output from the renewable energy power generation device 3 in the time zone in the power supply and demand adjustment.
  • the renewable energy output power suppression instruction of the target power command D1 is immediately after it is determined that the power of the power system is less than the predetermined first frequency range in the time zone subject to the natural energy output power suppression instruction. In time, it may include an instruction to increase the output power from the power in the immediately preceding time zone.
  • the frequency f of the electric power in the electric power system 9 is less than f0- ⁇ f1
  • the electric power supplied in the electric power system 9 is insufficient with respect to the demanded electric power, and stable frequency control by a power generation device such as thermal power, hydraulic power, or nuclear power is performed. It is presumed that it has not been done. Therefore, it is preferable to quickly reduce the electric power output from the renewable energy power generation device 3 and quickly increase the electric power output from the power generation devices such as thermal power, hydraulic power, and nuclear power.
  • the power control device 2 instructs the renewable energy power generation device 3 to increase the output power by the target power command D1.
  • the natural energy output power suppression instruction transmitted by the target power command D1 is an instruction to increase the output power from the power in the immediately preceding time zone at a part of the time zone subject to the natural energy output power suppression instruction.
  • the time zone for power supply and demand adjustment is 30 minutes and the target power command D1 is transmitted every 5 minutes
  • the time zone immediately after the power frequency f in the power system 9 becomes less than f0- ⁇ f1.
  • the power control device 2 gives an instruction to the renewable energy power generation device 3 to increase the output power by the target power command D1.
  • the power control device 2 gives the renewable energy power generation device 3 an output in the time zone immediately after the average of the output power in the time zone immediately before in the power supply and demand adjustment by the instruction to suppress the natural energy output power included in the target power command D1. Instruct to reduce the average power.
  • the power control device 2 has an output power of the renewable energy power generation device 3 according to a decrease rate calculated based on an increase rate of the power output from the power generation device connected to the power system 9 excluding the renewable energy power generation device 3. Give instructions to reduce.
  • the power generation device other than the renewable energy power generation device 3 connected to the power system 9 is, for example, a power generation device for thermal power, hydraulic power, nuclear power, or the like.
  • FIG. 10 shows the relationship between the target power P3 transmitted by the target power command D1 to the renewable energy power generation device 3 and the output power P1 of the renewable energy power generation device 3 at each time.
  • the target power command D1 includes a natural energy output power suppression instruction.
  • the time interval for adjusting the supply and demand of electric power is 30 minutes and the cycle in which the target electric power command D1 is transmitted from the electric power control device 2 is 5 minutes will be described. It is assumed that 11:30 to 12:00 is the time zone A and 12:00 to 12:30 is the time zone B in the time interval in which the supply and demand adjustment of electric power is performed.
  • the power control device 2 gives an instruction to the renewable energy power generation device 3 to reduce the average power in the time zone B from the average power in the time zone A by the instruction to suppress the renewable energy output power included in the target power command D1.
  • the arithmetic unit 26 of the electric power control device 2 sends the renewable energy power generation device 3 to the renewable energy power generation device 3.
  • the target power command D1 gives an instruction to output the target power P3b1.
  • the target power P3b1 is a power larger than the output power P1a6 at the time a6 in the time zone A.
  • the calculation unit 26 of the power control device 2 gives an instruction to increase the output power of the renewable energy power generation device 3 from the output power P1a6 to the target power P3b1.
  • the renewable energy power generation device 3 increases the output power in the time b1 of the time zone B from the output power P1a6 to the target power P3b1.
  • the electric power supplied in the electric power system 9 is insufficient with respect to the demanded electric power, and stable frequency control by a power generation device such as thermal power, hydraulic power, or nuclear power is performed. It is presumed that it has not been done. The power output from power generation equipment such as thermal power, hydraulic power, and nuclear power is unlikely to increase rapidly. In order to solve the shortage of the supplied power in the power system 9, the output power of the renewable energy power generation device 3 is temporarily increased in the time b1 of the time zone B.
  • the calculation unit 26 of the power control device 2 instructs the renewable energy power generation device 3 to output the target power P3b2 by the target power command D1.
  • the target power P3b2 is a power less than the output power P1b1 in the time b1 of the time zone B.
  • the calculation unit 26 of the power control device 2 gives an instruction to reduce the output power of the renewable energy power generation device 3 from the output power P1b1 to the target power P3b2.
  • the renewable energy power generation device 3 reduces the output power in the time b2 in the time zone B from the output power P1b1 to the target power P3b2.
  • the calculation unit 26 of the power control device 2 gives an instruction to the renewable energy power generation device 3 to output the target power P3b3 at 12:10, an instruction to output the target power P3b4 at 12:15, and a time 12:20. Is instructed to output the target power P3b5, and is instructed to output the target power P3b6 at 12:25.
  • the renewable energy power generation device 3 sequentially sets the output power in the time zone B to the target power P3b3, the target power P3b4, the target power P3b5, and the target power P3b6.
  • the target power P3B which is the average value of the target power in the time zone B, is less than the average value of the output power output from the renewable energy power generation device 3 in the time zone A.
  • the target power P3B is an average value of the target power P3b1, the target power P3b2, the target power P3b3, the target power P3b4, the target power P3b5, and the target power P3b6 in the time zone B.
  • the power control device 2 instructs the renewable energy power generation device 3 to reduce the average power in the time zone B from the average value of the output power in the time zone A by the instruction to suppress the renewable energy output power included in the target power command D1. I do.
  • the power generation devices such as thermal power, hydraulic power, and nuclear power connected to the power system 9 detect that the frequency f of the power in the power system 9 becomes less than f0- ⁇ f1 at 12:00, and self-control. Increases the output power. It is difficult for power generation devices such as thermal power, hydraulic power, and nuclear power to sharply increase the output power. Power generation devices such as thermal power, hydraulic power, and nuclear power increase the output power so as to reach the target power in, for example, 30 minutes.
  • FIG. 11 shows the relationship between the output power P1 of the renewable energy power generation device 3 and the output power of the power generation devices such as thermal power, hydraulic power, and nuclear power.
  • the renewable energy power generation device 3 reduces the output power, and the power generation devices such as thermal power, hydraulic power, and nuclear power increase the output power.
  • the output power P1 of the renewable energy power generation device 3 is reduced by the decrease rate calculated based on the increase rate of the electric power output from the power generation devices such as thermal power, hydraulic power, and nuclear power connected to the power system 9.
  • the target power P3b1 to the target power P3b6 in the time zone B are calculated so as to have the above-mentioned reduction rate based on the system information B2.
  • the renewable energy output power suppression instruction has a decrease rate calculated based on the increase rate of the electric power output from the power generation devices other than the natural energy power generation device 3 connected to the power system 9.
  • the renewable energy output power suppression instruction includes an instruction to increase the output power from the power in the immediately preceding time zone A in a part of the time b1 of the time zone B subject to the renewable energy output power suppression instruction, the power system The shortage of the power supply in No. 9 can be temporarily solved by the output power of the renewable energy power generation device 3.
  • the renewable energy output power suppression instruction is an instruction to reduce the average power from the output power in the time zone A immediately before in the power supply and demand adjustment. Since the average power output from the renewable energy power generation device 3 in the time zone B in the power supply and demand adjustment is reduced by the renewable energy output power suppression instruction, the output power of the renewable energy power generation device 3 in the power supply of the power system 9 is reduced.
  • the ratio can be decreased and the ratio of the output power of power generation devices such as thermal power, hydraulic power, and nuclear power can be increased.
  • the renewable energy output power suppression instruction indicates the rate of decrease calculated based on the rate of increase in power output from power generation devices such as thermal power, hydraulic power, and nuclear power, excluding the natural energy power generation device 3 connected to the power system 9. Have.
  • the renewable energy power generation device 3 can reduce the output power at a rate of decrease corresponding to the rate of increase of the power output from the power generation devices such as thermal power, hydraulic power, and nuclear power.
  • the shortage of the supplied power in the power system 9 can be alleviated, and stable frequency control by power generation devices such as thermal power, hydraulic power, and nuclear power can be ensured.
  • the electric power system 9 including the renewable energy power generation device 3 can be stably controlled.
  • the output power command means causes the renewable energy power generation device 3 to reduce the output power of the renewable energy output power. Suppression instructions may be given.
  • the calculation unit 26 of the power control device 2 averages the frequencies f of the power system 9 within a predetermined time based on the system information B1 and the system information B2 received in step S03 in step S10 of the program shown in FIG. Is calculated.
  • step S10 the calculation unit 26 of the power control device 2 calculates the average frequency of the power system 9 measured at intervals of several seconds or minutes, starting from 12:00 shown in FIG. 10, for example. Alternatively, the calculation unit 26 of the power control device 2 calculates the average frequency of the power system 9 at 12:00, 12:05, 12:10, and 12:15 shown in FIG.
  • the average frequency may be calculated based on the frequency f within an arbitrary time of several seconds to several minutes. Further, the average frequency may be calculated based on the frequency f of the power system 9 within an arbitrary time over a plurality of time zones.
  • the power control device 2 gives the renewable energy power generation device 3 an instruction to suppress the natural energy output power to reduce the output power, which is a stable power system 9. It may interfere with frequency control.
  • the power control device 2 determines that the average frequency of the power system 9 within a predetermined time is less than the predetermined first frequency f0- ⁇ f1 based on the system information detected by the system information detecting means.
  • the output power command means gives an instruction to suppress the output power to the renewable energy power generation device 3, so that the power system 9 including the renewable energy power generation device 3 is controlled more stably. It is possible to provide a power control system 1 capable of providing a power control system 1.
  • the output power command means naturally reduces the output power to the renewable energy power generation device 3.
  • the energy output power suppression instruction may be given.
  • step S10 of the program shown in FIG. 4 the arithmetic unit 26 of the power control device 2 continues the frequency f of the power system 9 within a predetermined time based on the system information B1 and the system information B2 received in step S03. And observe.
  • step S10 the calculation unit 26 of the power control device 2 continuously observes the frequency f of the power system 9 at intervals of several seconds or minutes, starting from 12:00 shown in FIG. 10, for example.
  • the arithmetic unit 26 of the power control device 2 continuously observes the frequency f of the power system 9 at 12:00, 12:05, 12:10, and 12:15 shown in FIG.
  • the frequency f may be continuously observed at an arbitrary time interval of several seconds to several minutes. Further, the frequency f may be continuously observed over a plurality of time zones.
  • the power control device 2 gives the renewable energy power generation device 3 an instruction to suppress the natural energy output power to reduce the output power, which is a stable power system 9. It may interfere with frequency control.
  • the frequency of the power system 9 within a predetermined time is continuously lower than the predetermined first frequency f0- ⁇ f1 based on the system information detected by the system information detecting means. If it is determined that, the output power command means issues an instruction to suppress the output power to the renewable energy power generation device 3, so that the power system 9 including the renewable energy power generation device 3 can be stably controlled. It is possible to provide a power control system 1 that can be used.
  • the power control device 2 may give the renewable energy power generation device 3 an instruction to suppress the natural energy output power to reduce the output power.
  • f0- ⁇ f1a 49.2 Hz
  • f0- ⁇ f1b 49.1 Hz.
  • the power control device 2 may give the renewable energy power generation device 3 an instruction to suppress the natural energy output power to reduce the output power.
  • the power control device 2 includes power output from a power generation device other than the renewable energy power generation device 3 connected to the power system 9, and renewable energy power generation.
  • the lower limit value f0- ⁇ f1 of the predetermined first frequency range is set.
  • the value is changed to f0- ⁇ f1m, which is larger than the lower limit value f0- ⁇ f1 of the first frequency range, and the power of the power system 9 is less than the changed first frequency range, that is, the frequency f is changed.
  • the output power command means may be used to instruct the renewable energy power generation device 3 to suppress the output power to reduce the output power.
  • the power generation device other than the renewable energy power generation device connected to the power system 9 is, for example, a power generation device for thermal power, hydraulic power, nuclear power, or the like.
  • the thermal power, hydraulic power, nuclear power, and other power generation devices connected to the power system 9 are structurally required to be operated at a certain minimum load power or higher.
  • the minimum electric power that can be output from a power generation device such as thermal power, hydraulic power, or nuclear power is referred to as a minimum load power.
  • the magnitude of the electric power output from the power generation devices such as thermal power, hydraulic power, and nuclear power is obtained by subtracting the power output from the renewable energy power generation device 3 from the required power of the power system 9.
  • power generation devices such as thermal power, hydraulic power, and nuclear power may be required to operate at the minimum load power or less.
  • operating a power generation device such as thermal power, hydraulic power, or nuclear power with a minimum load power or less destabilizes frequency control in the power system 9, and is structurally difficult depending on the power generation device.
  • the renewable energy power generation device is expected to operate in advance. It is preferable to reduce the power output from 3 and increase the power output from power generation devices such as thermal power, hydraulic power, and nuclear power.
  • the power control device 2 includes power output from power generation devices such as thermal power, hydraulic power, and nuclear power, and thermal power, hydraulic power, nuclear power, and the like.
  • the difference from the minimum load power of the power generation device is equal to or less than a predetermined value
  • the lower limit value f0- ⁇ f1 of the first frequency range is larger than the lower limit value f0- ⁇ f1 of the first frequency range.
  • Change to the value f0- ⁇ f1m When the frequency f of the power system 9 becomes less than the changed f0- ⁇ f1m, the power control device 2 instructs the renewable energy power generation device 3 to suppress the natural energy output power to reduce the output power.
  • the center device 8 is installed in a command room such as a power supply command center, a system control center, or a centralized control center.
  • the center device 8 transmits the system information B2, which is the power information of the power system 9, to the power control device 2.
  • the system information B2 also includes information on the output power and the minimum load power of power generation devices such as thermal power, hydraulic power, and nuclear power.
  • the power control device 2 receives the system information B2 and calculates the difference between the power output from the power generation device such as thermal power, hydraulic power, and nuclear power and the minimum load power of the power generation device such as thermal power, hydraulic power, and nuclear power.
  • the calculated difference is referred to as residual power.
  • the power control device 2 sets the lower limit value f0- ⁇ f1 of the first frequency range to the lower limit value f0- ⁇ f1 of the first frequency range. Change to a large value f0- ⁇ f1m.
  • the power control device 2 instructs the renewable energy power generation device 3 to suppress the output power to reduce the output power.
  • the calculation of the remaining power is performed by the power control device 2, but it may be performed by the center device 8.
  • the power control device 2 sets the lower limit value f0- ⁇ f1 of the first frequency range when the surplus power of the power generation device such as thermal power, hydraulic power, nuclear power, etc. becomes equal to or less than a predetermined value.
  • the value is changed to f0- ⁇ f1m, which is larger than the lower limit value f0- ⁇ f1 of the first frequency range.
  • the power control device 2 can be used as a renewable energy power generation device 3 when the remaining power of the power generation device such as thermal power, hydraulic power, nuclear power, etc. becomes low and the frequency f of the power system 9 becomes less than f0- ⁇ f1m in which the frequency f is changed.
  • the ratio of the output power P1 of the renewable energy power generation device 3 in the power system 9 is reduced, and stable frequency control by power generation devices such as thermal power, hydraulic power, and nuclear power is ensured.
  • the maximum power P2 that can be output is measured by the renewable energy power generation device 3 selected by the measurement target selection module M3 in step S01.
  • the maximum power P2 that can be output may be measured by all the renewable energy power generation devices 3.
  • the natural energy power generation device 3 to be measured of the maximum power P2 is selected by the measurement target selection module M3 in step S01.
  • the renewable energy power generation device 3 to be measured for the maximum power P2 selected by the operator may be set and stored in the storage unit 25 in advance as the measurement target selection information E1.
  • the renewable energy power generation device 3 to be commanded by the target power P3 in step S04 may be selected in duplicate with the renewable energy power generation device 3 to be measured by the maximum power P2. did. That is, when the renewable energy power generation device 3 to be measured of the maximum power P2 receives a command to output the target power P3 according to the target power command D1, the maximum power P2 output as the output power P1 is changed to the target power P3. Was required to output.
  • the renewable energy power generation device 3 selected as the command target of the target power P3 by the command target selection module M4 in step S04 may exclude the renewable energy power generation device 3 that is the detection target of the maximum power P2. ..
  • the renewable energy power generation devices 3a and 3d are selected as the measurement targets of the maximum power P2 by the measurement target selection module M3 in step S01, the natural energy power generation devices 3b, 3c and 3e excluding the natural energy power generation devices 3a and 3d, From 3f, the renewable energy power generation device 3 to be commanded by the target power P3 may be selected. It is assumed that the renewable energy power generation devices 3a and 3d, which are the measurement targets of the maximum power P2, always output the output power P1 applied to the maximum power P2.
  • the output power command means of the power control device 2 refers to some of the renewable energy power generation devices 3a to 3f among the plurality of renewable energy power generation devices 3a to 3f, excluding the detection target of the maximum power P2. Since the instruction is instructed to output the output power P1 applied to the target power P3, the renewable energy power generation devices 3a and 3d to be detected by the maximum power P2 can always output the output power P1 applied to the maximum power P2. Since the renewable energy power generation devices 3a and 3d, which are the targets of detection of the maximum power P2, always output the output power P1 applied to the maximum power P2, the maximum power P2 can be easily measured.
  • the renewable energy power generation device 3 incorporates the maximum power measurement module N1 and measures the maximum power P2 that can be output, and the maximum power information A2 that is the information of the maximum power P2 is It is made to be transmitted from the renewable energy power generation device 3 to the power control device 2.
  • the arithmetic unit 26 of the power control device 2 incorporates the maximum power measurement module N1 and sequentially transmits the output voltage of the renewable energy power generation device 3 by transmitting a command to increase or decrease the output power to the renewable energy power generation device 3. It may be changed so that the calculation unit 26 of the power control device 2 measures the maximum power P2 of the renewable energy power generation device 3.
  • step S05 when it is determined in step S05 that the frequency f is within the range of the predetermined frequency ⁇ f2, the power control device 2 issues the target power command D1 to the renewable energy power generation device 3. It is assumed that the output power P1 is instructed to be the maximum power P2. However, regardless of whether the frequency f is within the predetermined frequency ⁇ f2 without having step S05 and step S06, the power control device 2 sends the renewable energy power generation device 3 to the target power command D1. An instruction to set the output power P1 to the maximum power P2 may be transmitted.
  • the system information B1 is received from the power measuring devices 4a and 4d connected to the renewable energy power generation devices 3a and 3d selected by the measurement target selection module M3 in step S01.
  • the system information B1 is transferred to the power control device 2 from the power measurement devices 4a to 4f arranged in each of the renewable energy power generation devices 3a to 3f, or from the power measurement device 4 arbitrarily selected from the power measurement devices 4a to 4f. It may be sent.
  • the power measuring devices 4a to 4f are electrically connected and arranged in each of the renewable energy power generation devices 3a to 3f, but the power measuring device 4 is a plurality of renewable energy power generation devices. It may be electrically connected and arranged in a part of 3.
  • the power measuring devices 4a and 4d may be arranged only in the renewable energy power generation devices 3a and 3d selected in advance from the plurality of natural energy power generation devices 3a to 3f, respectively. .. With this configuration, the number of power measuring devices 4 in the power control system 1 can be reduced.
  • a plurality of renewable energy power generation devices 3a to 3f are connected to one power control device 2 via a communication line 5b.
  • one renewable energy power generation device 3 may be connected to one power control device 2.
  • the power control device 2 is provided as a device separate from the renewable energy power generation device 3.
  • the power control device 2 may be integrally configured with the renewable energy power generation device 3.

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Abstract

Provided are a power control system, a power control device, a computer program for power control, and a power control method which can stably control a power system including a natural energy power generation device.　This power control system 1 comprises: a natural energy power generation device 3 which generates electric power by using natural energy; and a power control device 2 provided with a maximum power detection means for detecting maximum power output from the natural energy power generation device 3, a system information detection means for detecting system information pertaining to a power system 9, and an output power command means for calculating and instructing output power to be output from the natural energy power generation device 3 on the basis of the detected maximum power and the detected system information, wherein, when the frequency of the power from the power system 9 is determined to be lower than a predetermined first frequency range on the basis of the system information detected by the system information detection means, the output power command means instructs the natural energy power generation device 3 to suppress natural energy output power for reducing the output power.

Description

電力制御システム、電力制御装置、電力制御用コンピュータプログラム、および電力制御方法Power control systems, power control devices, computer programs for power control, and power control methods
　本実施形態は、自然エネルギーにより発電を行う自然エネルギー発電装置の出力電力の制御を行う電力制御システム、電力制御装置、電力制御用コンピュータプログラム、および電力制御方法に関する。 The present embodiment relates to a power control system, a power control device, a computer program for power control, and a power control method for controlling the output power of a natural energy power generation device that generates power by natural energy.
　近年、太陽光発電、風力発電などの自然エネルギーにより発電を行う自然エネルギー発電装置の導入が進んでいる。電力系統に、多数の自然エネルギー発電装置が接続される。自然エネルギー発電装置を含む電力系統の制御を行う電力制御システムが知られている。 In recent years, the introduction of renewable energy power generation equipment that generates electricity from natural energy such as solar power generation and wind power generation is progressing. A large number of renewable energy generators are connected to the power system. A power control system that controls a power system including a renewable energy power generation device is known.
特開２００６－２０４０８１号公報Japanese Unexamined Patent Publication No. 2006-204081 特開２０１６－２０８７２３号公報Japanese Unexamined Patent Publication No. 2016-208723
　近年、太陽光発電、風力発電などの多数の自然エネルギー発電装置が、電力系統に接続されるようになった。多数の自然エネルギー発電装置を含む電力系統においても、火力、水力、原子力等の発電装置および自然エネルギー発電装置から出力される供給電力と、負荷から要求される需要電力とが一致するように、電力制御が行われることが望ましい。 In recent years, many renewable energy power generation devices such as solar power generation and wind power generation have come to be connected to the power system. Even in a power system including a large number of renewable energy power generation devices, power is supplied so that the power supplied from the power generation devices such as thermal power, hydraulic power, nuclear power, etc. and the renewable energy power generation devices matches the required power required from the load. It is desirable that control be performed.
　しかしながら、電力系統に接続される太陽光発電、風力発電などの多数の自然エネルギー発電装置が増加することにより、電力制御における電力系統の同期安定性や電圧安定性が低下することが予測される。 However, it is expected that the synchronization stability and voltage stability of the power system in power control will decrease due to the increase in the number of renewable energy power generation devices such as photovoltaic power generation and wind power generation connected to the power system.
　太陽光発電、風力発電などの自然エネルギー発電装置の出力電力は、日射や風速等の気象条件の影響を受けて時々刻々変動する。また火力、水力、原子力等の発電装置、自然エネルギー発電装置の出力電力の応答速度特性は、それぞれ異なる。このため、火力、水力、原子力等の発電装置および自然エネルギー発電装置から出力される電力どうしが互いに干渉し、安定的な制御を行うことが難しい場合があるとの問題点があった。電力系統の安定的な制御が行われない場合、負荷に供給される電力の品質が低下する可能性がある。 The output power of renewable energy power generation equipment such as solar power generation and wind power generation fluctuates from moment to moment due to the influence of weather conditions such as solar radiation and wind speed. In addition, the response speed characteristics of the output power of thermal power, hydraulic power, nuclear power generation equipment, and renewable energy power generation equipment are different from each other. For this reason, there is a problem that it may be difficult to perform stable control because the electric powers output from the power generation devices such as thermal power, hydraulic power, and nuclear power and the renewable energy power generation devices interfere with each other. If the power system is not controlled in a stable manner, the quality of the power supplied to the load may deteriorate.
　本実施形態は、自然エネルギー発電装置を含む電力系統を、安定的に制御することができる電力制御システム、電力制御装置、電力制御用コンピュータプログラム、および電力制御方法を提供することを目的とする。 An object of the present embodiment is to provide a power control system, a power control device, a computer program for power control, and a power control method capable of stably controlling a power system including a renewable energy power generation device.
　本実施形態の電力制御システムは、次のような構成を有することを特徴とする。
（１）自然エネルギーにより発電を行い電力系統に電力を供給する自然エネルギー発電装置。
（２）以下の構成を備えた電力制御装置。
（２－１）前記自然エネルギー発電装置から出力される最大電力を検出する最大電力検出手段。
（２－２）前記電力系統の電力に関する系統情報を検出する系統情報検出手段。
（２－３）前記最大電力検出手段により検出された前記最大電力、および前記系統情報検出手段により検出された前記系統情報に基づき、前記自然エネルギー発電装置に出力させる、前記最大電力以下である出力電力を算出し指示する出力電力指令手段。
（２－４）前記系統情報検出手段により検出された前記系統情報に基づき、前記電力系統の電力が予め定められた第１の周波数範囲未満であると判断した場合、前記出力電力指令手段は、前記自然エネルギー発電装置に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行う。 The power control system of the present embodiment is characterized by having the following configuration.
(1) A renewable energy power generation device that generates electric power from natural energy and supplies electric power to the electric power system.
(2) A power control device having the following configuration.
(2-1) Maximum power detecting means for detecting the maximum power output from the renewable energy power generation device.
(2-2) A system information detecting means for detecting system information related to the electric power of the power system.
(2-3) An output that is equal to or less than the maximum power to be output to the renewable energy power generation device based on the maximum power detected by the maximum power detecting means and the system information detected by the system information detecting means. Output power command means for calculating and instructing power.
(2-4) When it is determined that the power of the power system is less than the predetermined first frequency range based on the system information detected by the system information detecting means, the output power commanding means determines. The renewable energy power generation device is instructed to suppress the output power to reduce the output power.
第１実施形態にかかる電力制御システムの構成を示すブロック図Block diagram showing the configuration of the power control system according to the first embodiment 第１実施形態にかかる電力制御装置の構成を示すブロック図Block diagram showing the configuration of the power control device according to the first embodiment 第１実施形態にかかる自然エネルギー発電装置の構成を示すブロック図Block diagram showing the configuration of the renewable energy power generation device according to the first embodiment 第１実施形態にかかる電力制御装置のプログラムフローを示す図The figure which shows the program flow of the power control apparatus which concerns on 1st Embodiment 第１実施形態にかかる自然エネルギー発電装置のＭＰＰＴ（最大電力ポイントトラッキング）にかかる動作を説明する図The figure explaining the operation concerning MPPT (maximum power point tracking) of the renewable energy power generation apparatus which concerns on 1st Embodiment. 第１実施形態にかかる電力制御装置による目標電力の算出方法を説明する図The figure explaining the calculation method of the target power by the power control device which concerns on 1st Embodiment 第１実施形態にかかる電力制御装置による目標電力の別の算出方法を説明する図The figure explaining another calculation method of the target power by the power control device which concerns on 1st Embodiment 第１実施形態にかかる電力制御装置による自然エネルギー発電装置の制御を説明する図The figure explaining the control of the renewable energy power generation apparatus by the electric power control apparatus which concerns on 1st Embodiment. 第１実施形態にかかる自然エネルギー発電装置の出力を説明する図The figure explaining the output of the renewable energy power generation apparatus which concerns on 1st Embodiment 第１実施形態の変形例にかかる自然エネルギー発電装置の出力を説明する図The figure explaining the output of the renewable energy power generation apparatus which concerns on the modification of 1st Embodiment 第１実施形態の変形例にかかる自然エネルギー発電装置の出力電力と、火力、水力、原子力等の発電装置の出力電力との関係を説明する図The figure explaining the relationship between the output power of the renewable energy power generation apparatus which concerns on the modification of 1st Embodiment, and the output electric power of the power generation apparatus of thermal power, hydraulic power, nuclear power, etc. 他の実施形態にかかる電力制御システムの構成を示すブロック図Block diagram showing the configuration of the power control system according to another embodiment
　本実施形態にかかる電力制御システム１において、以下の信号、データ、情報が、入力、出力、記憶される。
　　出力電力情報Ａ１（自然エネルギー発電装置３の出力電力Ｐ１の情報）
　　最大電力情報Ａ２（自然エネルギー発電装置３の最大電力Ｐ２の情報）
　　系統情報Ｂ１（電力測定装置４から送信される電力系統９の電力の情報）
　　系統情報Ｂ２（センタ装置８から送信される電力系統９の電力の情報）
　　上位指令Ｃ１（センタ装置８から送信される指令）
　　目標電力指令Ｄ１（自然エネルギー発電装置３に対する目標電力Ｐ３の指令）
　　測定対象選択情報Ｅ１（最大電力Ｐ２の測定対象となる自然エネルギー発電装置の情報）
　　指令対象選択情報Ｅ２（目標電力指令Ｄ１の指令対象となる自然エネルギー発電装置の情報）
　　出力電力Ｐ１（自然エネルギー発電装置３から出力された電力）
　　最大電力Ｐ２（自然エネルギー発電装置３から出力することが可能な最大電力）
　　目標電力Ｐ３（自然エネルギー発電装置３に出力させる目標となる電力）
　　差分電力Ｐ４（最大電力Ｐ２と出力電力Ｐ１との差分にかかる電力）
　自然エネルギー発電装置に対し送信される目標電力指令Ｄ１のうち、出力電力を減少させる指示を自然エネルギー出力電力抑制指示と呼ぶ。 In the power control system 1 according to the present embodiment, the following signals, data, and information are input, output, and stored.
Output power information A1 (information on output power P1 of renewable energy power generation device 3)
Maximum power information A2 (information on maximum power P2 of renewable energy power generation device 3)
System information B1 (information on the power of the power system 9 transmitted from the power measuring device 4)
System information B2 (information on the power of the power system 9 transmitted from the center device 8)
Higher-level command C1 (command transmitted from the center device 8)
Target power command D1 (command of target power P3 for renewable energy power generation device 3)
Measurement target selection information E1 (information on the renewable energy power generation device to be measured for the maximum power P2)
Command target selection information E2 (information on renewable energy power generation equipment that is the target of the target power command D1)
Output power P1 (power output from renewable energy power generation device 3)
Maximum power P2 (maximum power that can be output from the renewable energy power generation device 3)
Target power P3 (target power to be output to the renewable energy power generation device 3)
Differential power P4 (power required for the difference between the maximum power P2 and the output power P1)
Of the target power command D1 transmitted to the renewable energy power generation device, the instruction for reducing the output power is called the renewable energy output power suppression instruction.
［１．第１実施形態］
［１－１．構成］
　図１～図３を参照して本実施形態の一例として、電力制御システム１について説明する。本実施形態において、同一構成の装置や部材が複数ある場合にはそれらについて同一の番号を付して説明を行い、また、同一構成の個々の装置や部材についてそれぞれを説明する場合に、共通する番号にアルファベットの添え字を付けることで区別する。 [1. First Embodiment]
[1-1. Constitution]
The power control system 1 will be described as an example of the present embodiment with reference to FIGS. 1 to 3. In the present embodiment, when there are a plurality of devices and members having the same configuration, they are given the same number and described, and when each device and member having the same configuration are described, they are common. Distinguish by adding an alphabetical subscript to the number.
（電力制御システム１の構成）
　電力制御システム１は、一例として電力制御装置２、６つの自然エネルギー発電装置３、６つの電力測定装置４を有する。６つの自然エネルギー発電装置３ａ、３ｂ、３ｃ、３ｄ，３ｅ、３ｆは、ケーブル７を介し電力系統９と電気的に接続される。６つの電力測定装置４ａ、４ｂ、４ｃ、４ｄ、４ｅ、４ｆはそれぞれ自然エネルギー発電装置３ａ、３ｂ、３ｃ、３ｄ，３ｅ、３ｆに電気的に接続され配置される。 (Configuration of power control system 1)
The electric power control system 1 has, for example, an electric power control device 2, six renewable energy power generation devices 3, and six electric power measuring devices 4. The six renewable energy power generation devices 3a, 3b, 3c, 3d, 3e, and 3f are electrically connected to the power system 9 via the cable 7. The six power measuring devices 4a, 4b, 4c, 4d, 4e, and 4f are electrically connected to and arranged with the renewable energy power generation devices 3a, 3b, 3c, 3d, 3e, and 3f, respectively.
　電力制御装置２は、通信線５ａを介し電力測定装置４ａ、４ｂ、４ｃ、４ｄ、４ｅ、４ｆに接続される。また、電力制御装置２は、通信線５ｂを介し自然エネルギー発電装置３ａ、３ｂ、３ｃ、３ｄ，３ｅ、３ｆに接続される。さらに電力制御装置２は、通信線５ｃを介し上位の制御装置であるセンタ装置８に接続される。 The power control device 2 is connected to the power measuring devices 4a, 4b, 4c, 4d, 4e, and 4f via the communication line 5a. Further, the power control device 2 is connected to the renewable energy power generation devices 3a, 3b, 3c, 3d, 3e, and 3f via the communication line 5b. Further, the power control device 2 is connected to the center device 8 which is a higher-level control device via the communication line 5c.
　電力制御装置２は、自然エネルギー発電装置３から出力された出力電力Ｐ１の情報である出力電力情報Ａ１、および電力系統９の電力の情報である系統情報Ｂ１を、電力測定装置４から通信線５ａを介し受信する。電力制御装置２は、電力系統９の電力の情報である系統情報Ｂ２、および上位指令Ｃ１をセンタ装置８から通信線５ｃを介し受信する。 The power control device 2 transmits the output power information A1 which is the information of the output power P1 output from the renewable energy power generation device 3 and the system information B1 which is the power information of the power system 9 from the power measuring device 4 to the communication line 5a. Receive via. The power control device 2 receives the system information B2, which is the power information of the power system 9, and the higher-level command C1 from the center device 8 via the communication line 5c.
　電力制御装置２は、自然エネルギー発電装置３から出力することが可能な最大電力Ｐ２の情報である最大電力情報Ａ２を、自然エネルギー発電装置３から通信線５ｂを介し受信する。電力制御装置２は、自然エネルギー発電装置３に出力させる目標電力Ｐ３の指令である目標電力指令Ｄ１を、通信線５ｂを介し自然エネルギー発電装置３に送信する。 The power control device 2 receives the maximum power information A2, which is the information of the maximum power P2 that can be output from the renewable energy power generation device 3, from the renewable energy power generation device 3 via the communication line 5b. The power control device 2 transmits the target power command D1, which is a command of the target power P3 to be output to the renewable energy power generation device 3, to the renewable energy power generation device 3 via the communication line 5b.
　自然エネルギー発電装置３は、再生可能エネルギーである太陽光または風力を受け電力を発電する電源装置である。本実施形態にかかる電力制御システム１は、一例として太陽光発電装置である自然エネルギー発電装置３ａ、３ｂ、３ｃ、３ｄ、３ｅ、３ｆを有する。自然エネルギー発電装置３ａ、３ｂ、３ｃ、３ｄ、３ｅ、３ｆは、ケーブル７により電気的に並列に接続される。自然エネルギー発電装置３ａ、３ｂ、３ｃ、３ｄ、３ｅ、３ｆは、ケーブル７を介し電力系統９に発電した電力を供給する。自然エネルギー発電装置３は、屋外の太陽光発電サイト等に設置される。 The renewable energy power generation device 3 is a power supply device that generates electric power by receiving solar energy or wind power which is renewable energy. The power control system 1 according to the present embodiment includes, as an example, a renewable energy power generation device 3a, 3b, 3c, 3d, 3e, 3f, which is a photovoltaic power generation device. The renewable energy power generation devices 3a, 3b, 3c, 3d, 3e, and 3f are electrically connected in parallel by the cable 7. The renewable energy power generation devices 3a, 3b, 3c, 3d, 3e, and 3f supply the generated power to the power system 9 via the cable 7. The renewable energy power generation device 3 is installed at an outdoor solar power generation site or the like.
　また、自然エネルギー発電装置３は、通信線５ｂを介し電力制御装置２に接続される。自然エネルギー発電装置３は、図３に示すように発電部３１、電力変換部３２、制御部３３により構成される。発電部３１は、太陽光パネルにより構成され、受けた太陽光を直流電力に変換する。変換された直流電力は、電力変換部３２に供給される。発電部３１は、風力発電ユニットにより構成されていてもよい。 Further, the renewable energy power generation device 3 is connected to the power control device 2 via the communication line 5b. As shown in FIG. 3, the renewable energy power generation device 3 includes a power generation unit 31, a power conversion unit 32, and a control unit 33. The power generation unit 31 is composed of a solar panel and converts the received sunlight into DC power. The converted DC power is supplied to the power conversion unit 32. The power generation unit 31 may be composed of a wind power generation unit.
　電力変換部３２は、スイッチング素子を有するインバータ等の変換回路により構成される。電力変換部３２は、発電部３１により発電された直流電力を出力電力Ｐ１にかかる交流電力に変換する。変換された出力電力Ｐ１にかかる交流電力は、ケーブル７を介し電力系統９に供給される。電力変換部３２は、制御部３３に制御される。 The power conversion unit 32 is composed of a conversion circuit such as an inverter having a switching element. The power conversion unit 32 converts the DC power generated by the power generation unit 31 into AC power applied to the output power P1. The AC power applied to the converted output power P1 is supplied to the power system 9 via the cable 7. The power conversion unit 32 is controlled by the control unit 33.
　制御部３３は、マイクロコンピュータ等の制御回路により構成される。制御部３３は、通信線５ｂを介し、電力制御装置２から、自然エネルギー発電装置３に対する目標電力Ｐ３の指令である目標電力指令Ｄ１を受信する。制御部３３は、目標電力指令Ｄ１に基づき、電力変換部３２から出力される出力電力Ｐ１の制御を行う。 The control unit 33 is composed of a control circuit such as a microcomputer. The control unit 33 receives the target power command D1 which is a command of the target power P3 to the renewable energy power generation device 3 from the power control device 2 via the communication line 5b. The control unit 33 controls the output power P1 output from the power conversion unit 32 based on the target power command D1.
　また、制御部３３は、電力変換部３２を制御するソフトウェアにより構成された最大電力測定モジュールＮ１を内蔵する。最大電力測定モジュールＮ１により、自然エネルギー発電装置３から出力することが可能な最大電力Ｐ２が検出される。最大電力Ｐ２は、自然エネルギー発電装置３の出力電圧を逐次変化させ、最大となる電力を検出するＭＰＰＴ（最大電力ポイントトラッキング）により検出される。自然エネルギー発電装置３ごとの最大電力Ｐ２は、通信線５ｂを介し電力制御装置２に送信される。 Further, the control unit 33 incorporates a maximum power measurement module N1 configured by software that controls the power conversion unit 32. The maximum power measurement module N1 detects the maximum power P2 that can be output from the renewable energy power generation device 3. The maximum power P2 is detected by MPPT (maximum power point tracking) that sequentially changes the output voltage of the renewable energy power generation device 3 and detects the maximum power. The maximum electric power P2 for each renewable energy power generation device 3 is transmitted to the power control device 2 via the communication line 5b.
　電力測定装置４は、電力、電圧、電流、周波数を測定する回路により構成された電力測定装置である。電力測定装置４は、通信線５ａを介し電力制御装置２に接続される。電力測定装置４は、自然エネルギー発電装置３から出力された出力電力Ｐ１、出力電圧Ｖ１を測定し、自然エネルギー発電装置３の出力電力の情報である出力電力情報Ａ１として、電力制御装置２に送信する。また、電力測定装置４は、電力系統９の周波数ｆを測定し、電力系統９の電力の情報である系統情報Ｂ１として、電力制御装置２に送信する。 The power measuring device 4 is a power measuring device composed of circuits for measuring power, voltage, current, and frequency. The power measuring device 4 is connected to the power control device 2 via the communication line 5a. The power measuring device 4 measures the output power P1 and the output voltage V1 output from the renewable energy power generation device 3, and transmits the output power information A1 which is the output power information of the renewable energy power generation device 3 to the power control device 2. To do. Further, the power measuring device 4 measures the frequency f of the power system 9 and transmits it to the power control device 2 as system information B1 which is information on the power of the power system 9.
　電力測定装置４ａ～４ｆが自然エネルギー発電装置３ａ～３ｆに、それぞれ電気的に接続され配置される。電力測定装置４ａは、自然エネルギー発電装置３ａから出力された出力電力Ｐ１ａ、出力電圧Ｖ１ａを測定し、出力電力情報Ａ１ａとして、電力制御装置２に送信する。電力測定装置４ｂ～４ｆは、それぞれ自然エネルギー発電装置３ｂ～３ｆから出力された出力電力Ｐ１ｂ～Ｐ２ｆ、出力電圧Ｖ１ｂ～Ｖ１ｆを測定し、出力電力情報Ａ１ｂ～Ａ１ｆとして、電力制御装置２に送信する。 The power measuring devices 4a to 4f are electrically connected to and arranged in the renewable energy power generation devices 3a to 3f, respectively. The power measuring device 4a measures the output power P1a and the output voltage V1a output from the renewable energy power generation device 3a, and transmits the output power information A1a to the power control device 2. The power measuring devices 4b to 4f measure the output powers P1b to P2f and the output voltages V1b to V1f output from the renewable energy power generation devices 3b to 3f, respectively, and transmit the output power information A1b to A1f to the power control device 2. ..
　センタ装置８は、コンピュータ等により構成された上位の制御装置である。センタ装置８は、通信線５ｃを介し電力制御装置２に接続される。センタ装置８は、電力系統の監視制御を行う給電指令所、系統制御所、集中制御所などの指令室等に設置される。センタ装置８は、電力系統９の電力の情報である系統情報Ｂ２、自然エネルギー発電装置３に対する指令である上位指令Ｃ１を、各太陽光発電サイト等に配置された複数の電力制御装置２に送信し、各太陽光発電サイト等の発電電力の制御を行う。系統情報Ｂ２には、電力系統９の電圧、電流、周波数等の情報、電力系統９の需要電力、供給電力に関する情報が含まれる。 The center device 8 is a higher-level control device configured by a computer or the like. The center device 8 is connected to the power control device 2 via the communication line 5c. The center device 8 is installed in a command room such as a power supply command center, a system control center, or a centralized control center that monitors and controls the power system. The center device 8 transmits system information B2, which is information on the power of the power system 9, and higher-level command C1, which is a command to the renewable energy power generation device 3, to a plurality of power control devices 2 arranged at each photovoltaic power generation site or the like. Then, control the generated power of each photovoltaic power generation site. The system information B2 includes information on the voltage, current, frequency, etc. of the power system 9, information on the required power of the power system 9, and information on the supplied power.
　通信線５ａ、５ｂ、５ｃは、専用線、インターネット等の通信回線、電話回線等の通信回線により構成される。通信線５ａにより電力測定装置４と電力制御装置２との間の通信が行われる。通信線５ｂにより電力制御装置２と自然エネルギー発電装置３との間の通信が行われる。通信線５ｃにより電力制御装置２とセンタ装置８との間の通信が行われる。 The communication lines 5a, 5b, and 5c are composed of a dedicated line, a communication line such as the Internet, and a communication line such as a telephone line. Communication between the power measuring device 4 and the power control device 2 is performed by the communication line 5a. Communication between the power control device 2 and the renewable energy power generation device 3 is performed by the communication line 5b. Communication between the power control device 2 and the center device 8 is performed by the communication line 5c.
　ケーブル７は、電力ケーブルにより構成される。ケーブル７は、自然エネルギー発電装置３と電力系統９とを電気的に接続する。ケーブル７は、自然エネルギー発電装置３から出力された電力を電力系統９に供給する。 The cable 7 is composed of a power cable. The cable 7 electrically connects the renewable energy power generation device 3 and the electric power system 9. The cable 7 supplies the electric power output from the renewable energy power generation device 3 to the electric power system 9.
　電力系統９は、交流電力を供給する電力供給網である。電力系統９は、自然エネルギー発電装置３から出力された電力、および火力、水力、原子力等の発電装置（図中不示）により発電された電力を需要家に供給する。 The power system 9 is a power supply network that supplies AC power. The power system 9 supplies the power output from the renewable energy power generation device 3 and the power generated by a power generation device such as thermal power, hydraulic power, or nuclear power (not shown in the figure) to the consumer.
（電力制御装置２の構成）
　電力制御装置２は、コンピュータ等により構成された装置である。電力制御装置２は、太陽光発電サイト等の監視制御を行う電力管理室等に設置される。電力制御装置２は、通信線５ａを介し電力測定装置４ａ、４ｂ、４ｃ、４ｄ、４ｅ、４ｆに接続される。また、電力制御装置２は、通信線５ｂを介し自然エネルギー発電装置３ａ、３ｂ、３ｃ、３ｄ、３ｅ、３ｆに接続される。さらに電力制御装置２は、通信線５ｃを介し上位の制御装置であるセンタ装置８に接続される。 (Configuration of power control device 2)
The power control device 2 is a device configured by a computer or the like. The power control device 2 is installed in a power management room or the like that monitors and controls a photovoltaic power generation site or the like. The power control device 2 is connected to the power measuring devices 4a, 4b, 4c, 4d, 4e, and 4f via the communication line 5a. Further, the power control device 2 is connected to the renewable energy power generation device 3a, 3b, 3c, 3d, 3e, 3f via the communication line 5b. Further, the power control device 2 is connected to the center device 8 which is a higher-level control device via the communication line 5c.
　電力制御装置２は、自然エネルギー発電装置３から出力された出力電力Ｐ１の情報である出力電力情報Ａ１、および電力系統９の電力の情報である系統情報Ｂ１を電力測定装置４から受信する。電力制御装置２は、自然エネルギー発電装置３から出力することが可能な最大電力Ｐ２にかかる最大電力情報Ａ２を、自然エネルギー発電装置３から受信する。電力制御装置２は、系統情報Ｂ２、上位指令Ｃ１をセンタ装置８から受信する。電力制御装置２は、自然エネルギー発電装置３に出力させる目標となる電力である目標電力Ｐ３の指令である目標電力指令Ｄ１を自然エネルギー発電装置３に送信する。 The power control device 2 receives the output power information A1 which is the information of the output power P1 output from the renewable energy power generation device 3 and the system information B1 which is the power information of the power system 9 from the power measuring device 4. The power control device 2 receives the maximum power information A2 related to the maximum power P2 that can be output from the renewable energy power generation device 3 from the renewable energy power generation device 3. The power control device 2 receives the system information B2 and the upper command C1 from the center device 8. The power control device 2 transmits the target power command D1 which is a command of the target power P3 which is the target power to be output to the renewable energy power generation device 3 to the renewable energy power generation device 3.
　電力制御装置２は、図２に示すように通信部２１、通信部２２、通信部２３、出力部２４、記憶部２５、演算部２６を有する。 As shown in FIG. 2, the power control device 2 has a communication unit 21, a communication unit 22, a communication unit 23, an output unit 24, a storage unit 25, and a calculation unit 26.
　通信部２１は、専用線、インターネット、電話回線等の通信回線との通信インタフェースにより構成される。通信部２１は、電力制御装置２の内部において演算部２６に接続される。 The communication unit 21 is composed of a communication interface with a communication line such as a dedicated line, the Internet, and a telephone line. The communication unit 21 is connected to the calculation unit 26 inside the power control device 2.
　また、通信部２１は、通信線５ａを介し電力測定装置４ａ～４ｆに接続される。通信部２１は、電力測定装置４ａ～４ｆのうち選択された電力測定装置４から、出力電力情報Ａ１を受信する。出力電力情報Ａ１には、電力測定装置４に接続された自然エネルギー発電装置３から出力された出力電力Ｐ１、出力電圧Ｖ１に関する情報が含まれる。 Further, the communication unit 21 is connected to the power measuring devices 4a to 4f via the communication line 5a. The communication unit 21 receives the output power information A1 from the power measuring device 4 selected from the power measuring devices 4a to 4f. The output power information A1 includes information on the output power P1 and the output voltage V1 output from the renewable energy power generation device 3 connected to the power measuring device 4.
　また、通信部２１は、電力測定装置４ａ～４ｆのうち選択された電力測定装置４から、電力系統９の電力の情報である系統情報Ｂ１を受信する。系統情報Ｂ１には、電力系統９の電力にかかる周波数ｆ１に関する情報が含まれる。 Further, the communication unit 21 receives the system information B1 which is the power information of the power system 9 from the power measuring device 4 selected from the power measuring devices 4a to 4f. The system information B1 includes information regarding the frequency f1 applied to the power of the power system 9.
　通信部２２は、専用線、インターネット、電話回線等の通信回線との通信インタフェースにより構成される。通信部２２は、電力制御装置２の内部において演算部２６に接続される。通信部２２は、通信線５ｃを介しセンタ装置８に接続される。通信部２２は、センタ装置８から、系統情報Ｂ２、上位指令Ｃ１を受信する。上位指令Ｃ１には、自然エネルギー発電装置３の出力電力を増加、減少させる指令、および増加量または減少量が含まれる。 The communication unit 22 is composed of a communication interface with a communication line such as a dedicated line, the Internet, and a telephone line. The communication unit 22 is connected to the calculation unit 26 inside the power control device 2. The communication unit 22 is connected to the center device 8 via the communication line 5c. The communication unit 22 receives the system information B2 and the higher-level command C1 from the center device 8. The higher-level command C1 includes a command for increasing or decreasing the output power of the renewable energy power generation device 3, and an amount of increase or decrease.
　通信部２３は、専用線、インターネット、電話回線等の通信回線との通信インタフェースにより構成される。通信部２３は、電力制御装置２の内部において演算部２６に接続される。また、通信部２３は、通信線５ｂを介し自然エネルギー発電装置３ａ～３ｆに接続される。 The communication unit 23 is composed of a communication interface with a communication line such as a dedicated line, the Internet, and a telephone line. The communication unit 23 is connected to the calculation unit 26 inside the power control device 2. Further, the communication unit 23 is connected to the renewable energy power generation devices 3a to 3f via the communication line 5b.
　通信部２３は、自然エネルギー発電装置３ａ～３ｆのうち選択された自然エネルギー発電装置３から、自然エネルギー発電装置３から出力することが可能な最大電力Ｐ２の情報である最大電力情報Ａ２を受信する。通信部２３は、自然エネルギー発電装置３ａ～３ｆのうち選択された自然エネルギー発電装置３に対し、自然エネルギー発電装置３に出力させる目標電力Ｐ３の指令である目標電力指令Ｄ１を送信する。 The communication unit 23 receives the maximum power information A2, which is the information of the maximum power P2 that can be output from the natural energy power generation device 3, from the natural energy power generation device 3 selected from the natural energy power generation devices 3a to 3f. .. The communication unit 23 transmits the target power command D1 which is a command of the target power P3 to be output to the renewable energy power generation device 3 to the renewable energy power generation device 3 selected from the renewable energy power generation devices 3a to 3f.
　出力部２４は、表示装置、プリンタ、通信インタフェース等により構成される。出力部２４は、電力制御装置２の内部において演算部２６に接続される。出力部２４は、自然エネルギー発電装置３から出力された出力電力Ｐ１と、自然エネルギー発電装置３から出力することが可能な最大電力Ｐ２との差分である差分電力Ｐ４を、表示、プリント、通信電文により出力する。 The output unit 24 is composed of a display device, a printer, a communication interface, and the like. The output unit 24 is connected to the calculation unit 26 inside the power control device 2. The output unit 24 displays, prints, and displays the differential power P4, which is the difference between the output power P1 output from the renewable energy power generation device 3 and the maximum power P2 that can be output from the renewable energy power generation device 3. Output by.
　記憶部２５は、半導体メモリやハードディスクのような記憶媒体にて構成される。記憶部２５は、電力制御装置２の内部において演算部２６に接続される。記憶部２５は、自然エネルギー発電装置３から出力することが可能な最大電力Ｐ２の情報である最大電力情報Ａ２、電力系統９の電力の情報である系統情報Ｂ１、系統情報Ｂ２、自然エネルギー発電装置３に対する目標電力Ｐ３の指令である目標電力指令Ｄ１を、自然エネルギー発電装置３ごとに逐次記憶する。 The storage unit 25 is composed of a storage medium such as a semiconductor memory or a hard disk. The storage unit 25 is connected to the calculation unit 26 inside the power control device 2. The storage unit 25 has maximum power information A2 which is information on the maximum power P2 that can be output from the renewable energy power generation device 3, system information B1 and system information B2 which is information on the power of the power system 9, and the renewable energy power generation device. The target power command D1, which is a command of the target power P3 with respect to 3, is sequentially stored for each renewable energy power generation device 3.
　また記憶部２５は、最大電力Ｐ２の測定対象となる自然エネルギー発電装置３の情報である測定対象選択情報Ｅ１、目標電力指令Ｄ１の指令対象となる自然エネルギー発電装置３の情報である指令対象選択情報Ｅ２を記憶する。記憶部２５に対するデータの書き込み、読み出しは、演算部２６により制御される。 Further, the storage unit 25 selects the command target, which is the information of the renewable energy power generation device 3 which is the command target of the measurement target selection information E1 and the target power command D1 which are the information of the renewable energy power generation device 3 which is the measurement target of the maximum power P2. Information E2 is stored. The writing and reading of data to the storage unit 25 is controlled by the calculation unit 26.
　演算部２６は、コンピュータに内蔵されたＣＰＵ等により構成される。演算部２６は、電力制御装置２の内部において通信部２１、通信部２２、通信部２３、出力部２４、記憶部２５に接続される。演算部２６は、以下の制御を行う。 The calculation unit 26 is composed of a CPU or the like built in the computer. The calculation unit 26 is connected to the communication unit 21, the communication unit 22, the communication unit 23, the output unit 24, and the storage unit 25 inside the power control device 2. The calculation unit 26 performs the following control.
（イ）通信部２１に対する制御
　演算部２６は、通信部２１を制御し、電力測定装置４から自然エネルギー発電装置３の出力電力Ｐ１の情報である出力電力情報Ａ１、電力系統９の電力の情報である系統情報Ｂ１を受信する。 (B) Control for communication unit 21 The calculation unit 26 controls the communication unit 21, and the power information A1 and the power information of the power system 9 which are the information of the output power P1 of the renewable energy power generation device 3 from the power measurement device 4. The system information B1 is received.
（ロ）通信部２２に対する制御
　演算部２６は、通信部２２を制御し、センタ装置８から系統情報Ｂ２、上位指令Ｃ１を受信する。 (B) Control for communication unit 22 The calculation unit 26 controls the communication unit 22 and receives system information B2 and higher-level command C1 from the center device 8.
（ハ）通信部２３に対する制御
　演算部２６は、通信部２３を制御し、自然エネルギー発電装置３から自然エネルギー発電装置３の最大電力Ｐ２の情報である最大電力情報Ａ２を受信する。演算部２６は、通信部２３を制御し、自然エネルギー発電装置３に自然エネルギー発電装置３に対する目標電力Ｐ３の指令である目標電力指令Ｄ１を送信する。 (C) Control for communication unit 23 The calculation unit 26 controls the communication unit 23 and receives the maximum power information A2 which is the information of the maximum power P2 of the renewable energy power generation device 3 from the renewable energy power generation device 3. The calculation unit 26 controls the communication unit 23 and transmits the target power command D1 which is a command of the target power P3 to the renewable energy power generation device 3 to the renewable energy power generation device 3.
（ニ）出力部２４に対する制御
　演算部２６は、出力部２４を制御し、自然エネルギー発電装置３から出力された出力電力Ｐ１と自然エネルギー発電装置３から出力することが可能な最大電力Ｐ２との差分である差分電力Ｐ４を、表示、プリント、通信電文により出力させる。 (D) Control for output unit 24 The calculation unit 26 controls the output unit 24, and the output power P1 output from the renewable energy power generation device 3 and the maximum power P2 that can be output from the natural energy power generation device 3 The differential power P4, which is the difference, is output by display, printing, and communication message.
（ホ）記憶部２５に対する制御
　演算部２６は、記憶部２５を制御し、最大電力情報Ａ２、系統情報Ｂ１、系統情報Ｂ２、目標電力指令Ｄ１、測定対象選択情報Ｅ１、指令対象選択情報Ｅ２の、書込みおよび読み出しを行う。 (E) Control of the storage unit 25 The calculation unit 26 controls the storage unit 25 to obtain maximum power information A2, system information B1, system information B2, target power command D1, measurement target selection information E1, and command target selection information E2. , Write and read.
（へ）演算部２６における演算
　演算部２６は、ソフトウェアにより構成された出力調整モジュールＭ１、差分算出モジュールＭ２、測定対象選択モジュールＭ３、指令対象選択モジュールＭ４、系統情報検出モジュールＭ５を内蔵する。 (F) The calculation unit 26 in the calculation unit 26 includes an output adjustment module M1 composed of software, a difference calculation module M2, a measurement target selection module M3, a command target selection module M4, and a system information detection module M5.
　演算部２６は、出力調整モジュールＭ１により、自然エネルギー発電装置３に出力させる目標電力Ｐ３を算出する。目標電力Ｐ３は、自然エネルギー発電装置３ａ～３ｆのうち選択された自然エネルギー発電装置３について算出され、目標電力指令Ｄ１により選択された自然エネルギー発電装置３に指示される。 The calculation unit 26 calculates the target power P3 to be output to the renewable energy power generation device 3 by the output adjustment module M1. The target power P3 is calculated for the renewable energy power generation device 3 selected from the renewable energy power generation devices 3a to 3f, and is instructed to the renewable energy power generation device 3 selected by the target power command D1.
　演算部２６は、系統情報検出モジュールＭ５により、電力系統９の電力に関する系統情報Ｂ１、Ｂ２を検出する。系統情報Ｂ１は、自然エネルギー発電装置３の制御部３３から送信される。系統情報Ｂ２は、センタ装置８から送信される。 The calculation unit 26 detects the system information B1 and B2 related to the power of the power system 9 by the system information detection module M5. The system information B1 is transmitted from the control unit 33 of the renewable energy power generation device 3. The system information B2 is transmitted from the center device 8.
　演算部２６は、差分算出モジュールＭ２により、自然エネルギー発電装置３から出力された出力電力Ｐ１と自然エネルギー発電装置３から出力することが可能な最大電力Ｐ２との差分である差分電力Ｐ４を算出する。算出された差分電力Ｐ４は、表示、プリント、通信電文により出力部２４から出力される。 The calculation unit 26 calculates the differential power P4, which is the difference between the output power P1 output from the renewable energy power generation device 3 and the maximum power P2 that can be output from the natural energy power generation device 3, by the difference calculation module M2. .. The calculated differential power P4 is output from the output unit 24 by display, printing, and communication telegram.
　演算部２６は、測定対象選択モジュールＭ３により、自然エネルギー発電装置３ａ～３ｆのうち、出力することが可能な最大電力Ｐ２の測定対象となる自然エネルギー発電装置３を選択する。最大電力Ｐ２の測定対象となる自然エネルギー発電装置３は、自然エネルギー発電装置３ａ～３ｆから単数または複数選択され、測定対象選択情報Ｅ１として記憶部２５に記憶される。また、測定対象選択情報Ｅ１に基づき、自然エネルギー発電装置３ａ～３ｆのうち選択された自然エネルギー発電装置３から、最大電力Ｐ２の情報である最大電力情報Ａ２を受信する。 The calculation unit 26 selects the renewable energy power generation device 3 to be measured of the maximum power P2 that can be output from the renewable energy power generation devices 3a to 3f by the measurement target selection module M3. The renewable energy power generation device 3 to be measured with the maximum power P2 is selected one or more from the renewable energy power generation devices 3a to 3f, and is stored in the storage unit 25 as the measurement target selection information E1. Further, based on the measurement target selection information E1, the maximum power information A2, which is the information of the maximum power P2, is received from the renewable energy power generation device 3 selected from the renewable energy power generation devices 3a to 3f.
　演算部２６は、指令対象選択モジュールＭ４により、自然エネルギー発電装置３ａ～３ｆのうち、目標電力指令Ｄ１の指令対象となる自然エネルギー発電装置３を選択する。目標電力指令Ｄ１の指令対象となる自然エネルギー発電装置３は、自然エネルギー発電装置３ａ～３ｆから単数または複数選択され、指令対象選択情報Ｅ２として記憶部２５に記憶される。また、指令対象選択情報Ｅ２に基づき、自然エネルギー発電装置３ａ～３ｆのうち選択された自然エネルギー発電装置３に対し、目標電力Ｐ３の指令である目標電力指令Ｄ１が送信される。 The calculation unit 26 selects the renewable energy power generation device 3 to be the command target of the target power command D1 from the renewable energy power generation devices 3a to 3f by the command target selection module M4. The renewable energy power generation device 3 to be commanded by the target power command D1 is selected one or more from the renewable energy power generation devices 3a to 3f, and is stored in the storage unit 25 as the command target selection information E2. Further, the target power command D1 which is a command of the target power P3 is transmitted to the renewable energy power generation device 3 selected from the renewable energy power generation devices 3a to 3f based on the command target selection information E2.
　以上が、電力制御システム１の構成である。 The above is the configuration of the power control system 1.
［１－２．作用］
　次に、図１～９に基づき本実施形態の電力制御システム１および電力制御装置２の動作の概要を説明する。図４は電力制御装置２に内蔵されたプログラムのフローを示す図である。図４に示すプログラムは、電力制御装置２の演算部２６に内蔵される。 [1-2. Action]
Next, an outline of the operation of the power control system 1 and the power control device 2 of the present embodiment will be described with reference to FIGS. 1 to 9. FIG. 4 is a diagram showing a flow of a program built in the power control device 2. The program shown in FIG. 4 is built in the calculation unit 26 of the power control device 2.
　電力制御システム１において、自然エネルギー発電装置３は、自然エネルギーにより発電を行い電力系統９に電力を供給する。自然エネルギー発電装置３の制御部３３は、最大電力測定モジュールＮ１を内蔵する。自然エネルギー発電装置３の制御部３３は、最大電力測定モジュールＮ１により、自然エネルギー発電装置３から出力することが可能な最大電力Ｐ２の測定を行い、最大電力Ｐ２を最大電力情報Ａ２に含め電力制御装置２に送信する。 In the electric power control system 1, the renewable energy power generation device 3 generates electric power by natural energy and supplies electric power to the electric power system 9. The control unit 33 of the renewable energy power generation device 3 incorporates the maximum power measurement module N1. The control unit 33 of the renewable energy power generation device 3 measures the maximum power P2 that can be output from the renewable energy power generation device 3 by the maximum power measurement module N1, and includes the maximum power P2 in the maximum power information A2 for power control. It is transmitted to the device 2.
　自然エネルギー発電装置３の制御部３３は、最大電力測定モジュールＮ１により電力変換部３２から出力される電力にかかる出力電圧を逐次変化させ、ＭＰＰＴ（最大電力ポイントトラッキング）により、最大電力Ｐ２を検出する。 The control unit 33 of the renewable energy power generation device 3 sequentially changes the output voltage applied to the power output from the power conversion unit 32 by the maximum power measurement module N1, and detects the maximum power P2 by MPPT (maximum power point tracking). ..
　電力制御装置２は、自然エネルギー発電装置３から出力することが可能な最大電力Ｐ２を、自然エネルギー発電装置３から最大電力情報Ａ２を受信することにより検出する。電力制御装置２は、最大電力情報Ａ２を通信部２３により受信する。 The power control device 2 detects the maximum power P2 that can be output from the renewable energy power generation device 3 by receiving the maximum power information A2 from the natural energy power generation device 3. The power control device 2 receives the maximum power information A2 by the communication unit 23.
　また、電力制御装置２は、電力系統９の電力に関する系統情報Ｂ１、Ｂ２を検出する。電力制御装置２の演算部２６は、内蔵する系統情報検出モジュールＭ５により自然エネルギー発電装置３の制御部３３から系統情報Ｂ１を、センタ装置８から系統情報Ｂ２を受信する。電力制御装置２は、系統情報Ｂ１、Ｂ２を受信することにより、電力系統９の電圧、電流、周波数等の情報、電力系統９の需要電力、供給電力に関する情報を検出する。 Further, the power control device 2 detects system information B1 and B2 regarding the power of the power system 9. The calculation unit 26 of the power control device 2 receives the system information B1 from the control unit 33 of the renewable energy power generation device 3 and the system information B2 from the center device 8 by the built-in system information detection module M5. By receiving the system information B1 and B2, the power control device 2 detects information on the voltage, current, frequency, etc. of the power system 9, and information on the required power and the supplied power of the power system 9.
　電力制御装置２は、最大電力情報Ａ２にかかる最大電力Ｐ２、および系統情報Ｂ１、系統情報Ｂ２に基づき、自然エネルギー発電装置３に出力させる最大電力Ｐ２以下である目標電力Ｐ３を算出し、自然エネルギー発電装置３に指示する。電力制御装置２の演算部２６は、内蔵する出力調整モジュールＭ１により目標電力Ｐ３の算出を行う。 The power control device 2 calculates the target power P3 which is equal to or less than the maximum power P2 to be output to the renewable energy power generation device 3 based on the maximum power P2 required for the maximum power information A2, the system information B1 and the system information B2, and the natural energy. Instruct the power generation device 3. The calculation unit 26 of the power control device 2 calculates the target power P3 by the built-in output adjustment module M1.
　電力制御装置２は、自然エネルギー発電装置３の制御部３３から送信された系統情報Ｂ１、センタ装置８から送信された系統情報Ｂ２に基づき、電力系統９の電力が予め定められた周波数の範囲内にないと判断した場合、自然エネルギー発電装置３に対し、出力電力Ｐ１を目標電力Ｐ３に減少させる指示を行う。電力制御装置２の演算部２６は、内蔵する出力調整モジュールＭ１により出力電力Ｐ１未満である目標電力Ｐ３を算出する。電力制御装置２は、目標電力Ｐ３を目標電力指令Ｄ１により通信部２３から自然エネルギー発電装置３に送信し、目標電力Ｐ３の指示を行う。 The power control device 2 is based on the system information B1 transmitted from the control unit 33 of the renewable energy power generation device 3 and the system information B2 transmitted from the center device 8, and the power of the power system 9 is within a predetermined frequency range. If it is determined that the power is not present, the renewable energy power generation device 3 is instructed to reduce the output power P1 to the target power P3. The calculation unit 26 of the power control device 2 calculates the target power P3, which is less than the output power P1, by the built-in output adjustment module M1. The power control device 2 transmits the target power P3 from the communication unit 23 to the renewable energy power generation device 3 according to the target power command D1, and instructs the target power P3.
　電力系統９の周波数ｆが、基準周波数ｆ０に対し予め定められたΔｆ１内にないと判断した場合、つまり周波数ｆがｆ０－Δｆ１≦ｆ≦ｆ０＋Δｆ１となる範囲にないと判断した場合、電力制御装置２は、自然エネルギー発電装置３に対し出力電力Ｐ１を目標電力Ｐ３に減少させる指示を、目標電力指令Ｄ１を送信することにより行う。Δｆ１を第１の周波数範囲内と呼ぶ場合がある。 When it is determined that the frequency f of the power system 9 is not within the predetermined Δf1 with respect to the reference frequency f0, that is, when it is determined that the frequency f is not within the range of f0−Δf1 ≦ f ≦ f0 + Δf1, the power control device. 2 gives an instruction to the renewable energy power generation device 3 to reduce the output power P1 to the target power P3 by transmitting the target power command D1. Δf1 may be referred to as being within the first frequency range.
　例えばｆ０＝５０Ｈｚ、Δｆ１＝１Ｈｚである場合、ｆ０－Δｆ１＝４９Ｈｚ、ｆ０＋Δｆ１＝５１Ｈｚである。周波数ｆが４９Ｈｚ≦ｆ≦５１Ｈｚとなる範囲にない場合、電力制御装置２は、出力電力Ｐ１を目標電力Ｐ３に減少させる指示を、目標電力指令Ｄ１を自然エネルギー発電装置３に対して送信することにより行う。 For example, when f0 = 50Hz and Δf1 = 1Hz, f0-Δf1 = 49Hz and f0 + Δf1 = 51Hz. When the frequency f is not in the range of 49 Hz ≦ f ≦ 51 Hz, the power control device 2 transmits an instruction to reduce the output power P1 to the target power P3 to the renewable energy power generation device 3 with the target power command D1. To be done by.
　電力制御装置２は、自然エネルギー発電装置３から出力された出力電力Ｐ１と自然エネルギー発電装置３から出力することが可能な最大電力Ｐ２との差分である差分電力Ｐ４を算出し、出力部２４から出力させる。電力制御装置２の演算部２６は、差分算出モジュールＭ２により差分電力Ｐ４を算出する。 The power control device 2 calculates the differential power P4, which is the difference between the output power P1 output from the renewable energy power generation device 3 and the maximum power P2 that can be output from the natural energy power generation device 3, and the output unit 24 calculates the differential power P4. Output. The calculation unit 26 of the power control device 2 calculates the difference power P4 by the difference calculation module M2.
　電力制御装置２は、自然エネルギー発電装置３の制御部３３から送信された系統情報Ｂ１、センタ装置８から送信された系統情報Ｂ２により電力系統９の電力に関する情報を検出する。電力制御装置２は、系統情報Ｂ１、Ｂ２に基づき、電力系統９の電力が予め定められた周波数範囲内にあると判断した場合、自然エネルギー発電装置３に対し、出力することが可能な最大電力Ｐ２を出力させる指示を行う。 The power control device 2 detects information related to the power of the power system 9 by the system information B1 transmitted from the control unit 33 of the renewable energy power generation device 3 and the system information B2 transmitted from the center device 8. When the power control device 2 determines that the power of the power system 9 is within a predetermined frequency range based on the system information B1 and B2, the power control device 2 can output the maximum power that can be output to the renewable energy power generation device 3. Instruct to output P2.
　電力系統９の周波数ｆが、基準周波数ｆ０に対し予め定められたΔｆ２内にあると判断した場合、つまり周波数ｆがｆ０－Δｆ２≦ｆ≦ｆ０＋Δｆ２となる範囲にあると判断した場合、電力制御装置２は、自然エネルギー発電装置３に対し出力電力Ｐ１を最大電力Ｐ２とする指示を、目標電力指令Ｄ１を送信することにより行う。Δｆ２を第２の周波数範囲内と呼ぶ場合がある。 When it is determined that the frequency f of the power system 9 is within the predetermined Δf2 with respect to the reference frequency f0, that is, when it is determined that the frequency f is in the range of f0−Δf2 ≦ f ≦ f0 + Δf2, the power control device 2 gives an instruction to the renewable energy power generation device 3 to set the output power P1 to the maximum power P2 by transmitting the target power command D1. Δf2 may be referred to as being within the second frequency range.
　例えばｆ０＝５０Ｈｚ、Δｆ２＝０．１Ｈｚである場合、ｆ０－Δｆ２＝４９．９Ｈｚ、ｆ０＋Δｆ２＝５０．１Ｈｚである。周波数ｆが４９．９Ｈｚ≦ｆ≦５０．１Ｈｚとなる範囲にある場合、電力制御装置２は、出力電力Ｐ１を最大電力Ｐ２とする指示を、目標電力指令Ｄ１を自然エネルギー発電装置３に対して送信することにより行う。 For example, when f0 = 50Hz and Δf2 = 0.1Hz, f0-Δf2 = 49.9Hz and f0 + Δf2 = 50.1Hz. When the frequency f is in the range of 49.9 Hz ≦ f ≦ 50.1 Hz, the power control device 2 issues an instruction to set the output power P1 to the maximum power P2 to the target power command D1 to the renewable energy power generation device 3. It is done by sending.
　電力制御装置２は、複数の自然エネルギー発電装置３のうち、一部の自然エネルギー発電装置３に対し、目標電力指令Ｄ１により目標電力Ｐ３にかかる電力を出力する指示を行う。電力制御装置２の演算部２６は、指令対象選択モジュールＭ４により、目標電力指令Ｄ１を指示する対象として、複数の自然エネルギー発電装置３のうち一部の自然エネルギー発電装置３を選択する。 The power control device 2 instructs some of the renewable energy power generation devices 3 among the plurality of renewable energy power generation devices 3 to output the power applied to the target power P3 by the target power command D1. The calculation unit 26 of the power control device 2 selects a part of the renewable energy power generation devices 3 among the plurality of renewable energy power generation devices 3 as the target for instructing the target power command D1 by the command target selection module M4.
　電力制御装置２は、複数の自然エネルギー発電装置３のうち、選択された自然エネルギー発電装置３の最大電力Ｐ２を検出する。電力制御装置２の演算部２６は、測定対象選択モジュールＭ３により、複数の自然エネルギー発電装置３のうち、最大電力Ｐ２の測定対象となる一部の自然エネルギー発電装置３を選択する。 The power control device 2 detects the maximum power P2 of the selected renewable energy power generation device 3 from the plurality of renewable energy power generation devices 3. The calculation unit 26 of the power control device 2 selects a part of the renewable energy power generation devices 3 to be measured of the maximum power P2 from the plurality of renewable energy power generation devices 3 by the measurement target selection module M3.
　上記の動作は、図４に示すプログラムにより実現される。図４に示すプログラムは、電力制御装置２の演算部２６に内蔵される。図４に示すプログラムは、一定周期にて繰り返し実行される。図４に示すプログラムは、例えば５分、３０分周期にて実行される。電力制御装置２の演算部２６は、下記の手順にて自然エネルギー発電装置３の電力制御に関する動作を行う。 The above operation is realized by the program shown in FIG. The program shown in FIG. 4 is built in the calculation unit 26 of the power control device 2. The program shown in FIG. 4 is repeatedly executed at regular intervals. The program shown in FIG. 4 is executed, for example, in a cycle of 5 minutes or 30 minutes. The calculation unit 26 of the power control device 2 performs an operation related to power control of the renewable energy power generation device 3 according to the following procedure.
（ステップＳ０１：最大電力Ｐ２の測定対象となる自然エネルギー発電装置３を選択する）
　電力制御装置２の演算部２６は、内蔵する測定対象選択モジュールＭ３により、最大電力Ｐ２の測定対象となる自然エネルギー発電装置３を、複数の自然エネルギー発電装置３の中から選択する。 (Step S01: Select the renewable energy power generation device 3 to be measured for the maximum power P2)
The calculation unit 26 of the power control device 2 selects the renewable energy power generation device 3 to be measured for the maximum power P2 from the plurality of natural energy power generation devices 3 by the built-in measurement target selection module M3.
　最大電力Ｐ２の測定対象として、自然エネルギー発電装置３ａ～３ｆのうち、例えば、自然エネルギーサイトの東側に配置された自然エネルギー発電装置３ａ、西側に配置された自然エネルギー発電装置３ｄの二つが選択される。選択される自然エネルギー発電装置３はこれに限られず、任意に選択されてよい。最大電力Ｐ２の測定対象として選択された自然エネルギー発電装置３ａ、３ｄは、測定対象選択情報Ｅ１として記憶部２５に記憶される。 Of the renewable energy power generation devices 3a to 3f, for example, the renewable energy power generation device 3a located on the east side of the renewable energy site and the renewable energy power generation device 3d located on the west side are selected as the measurement targets of the maximum power P2. To. The renewable energy power generation device 3 to be selected is not limited to this, and may be arbitrarily selected. The renewable energy power generation devices 3a and 3d selected as the measurement target of the maximum power P2 are stored in the storage unit 25 as the measurement target selection information E1.
（ステップＳ０２：最大電力Ｐ２の測定を行う）
　ステップＳ０１において、記憶部２５に記憶された測定対象選択情報Ｅ１に基づき、電力制御装置２の演算部２６は、選択された自然エネルギー発電装置３ａ、３ｄの最大電力の検出を行う。電力制御装置２の演算部２６は、通信部２３を介し、自然エネルギー発電装置３ａ、３ｄから出力することが可能な最大電力Ｐ２の情報である最大電力情報Ａ２を受信する。 (Step S02: Measure the maximum power P2)
In step S01, the calculation unit 26 of the power control device 2 detects the maximum power of the selected renewable energy power generation devices 3a and 3d based on the measurement target selection information E1 stored in the storage unit 25. The calculation unit 26 of the power control device 2 receives the maximum power information A2, which is information on the maximum power P2 that can be output from the renewable energy power generation devices 3a and 3d, via the communication unit 23.
　自然エネルギー発電装置３において、一定周期にて最大電力Ｐ２の測定が行われ、最大電力情報Ａ２が電力制御装置２に対し送信される。 In the renewable energy power generation device 3, the maximum power P2 is measured at regular intervals, and the maximum power information A2 is transmitted to the power control device 2.
　自然エネルギー発電装置３において発電部３１により発電された電力は、電力変換部３２により直流から交流に変換される。制御部３３は、電力変換部３２の出力電力Ｐ１を制御する。制御部３３は、ソフトウェアにより構成された最大電力測定モジュールＮ１を内蔵する。 The electric power generated by the power generation unit 31 in the renewable energy power generation device 3 is converted from direct current to alternating current by the power conversion unit 32. The control unit 33 controls the output power P1 of the power conversion unit 32. The control unit 33 incorporates a maximum power measurement module N1 configured by software.
　制御部３３は、最大電力測定モジュールＮ１により、自然エネルギー発電装置３から出力することが可能な最大電力Ｐ２の測定を行う。最大電力Ｐ２は、ＭＰＰＴ（最大電力ポイントトラッキング）により検出される。ＭＰＰＴ（最大電力ポイントトラッキング）により電力変換部３２の出力電圧を図５に示すように逐次変化させ、最大となる電力を最大電力Ｐ２として検出する。自然エネルギー発電装置３ａ、３ｄの最大電力Ｐ２は、最大電力情報Ａ２に含められ通信線５ｂを介し電力制御装置２に送信される。 The control unit 33 measures the maximum power P2 that can be output from the renewable energy power generation device 3 by the maximum power measurement module N1. The maximum power P2 is detected by MPPT (Maximum Power Point Tracking). The output voltage of the power conversion unit 32 is sequentially changed by MPPT (maximum power point tracking) as shown in FIG. 5, and the maximum power is detected as the maximum power P2. The maximum power P2 of the renewable energy power generation devices 3a and 3d is included in the maximum power information A2 and transmitted to the power control device 2 via the communication line 5b.
　電力制御装置２の演算部２６は、通信部２３を介し最大電力情報Ａ２を受信し、自然エネルギー発電装置３ａ、３ｄの最大電力Ｐ２を検出する。プログラムにおけるステップＳ０２または最大電力測定モジュールＮ１を、最大電力検出手段と呼ぶ場合がある。 The calculation unit 26 of the power control device 2 receives the maximum power information A2 via the communication unit 23, and detects the maximum power P2 of the renewable energy power generation devices 3a and 3d. Step S02 or the maximum power measuring module N1 in the program may be referred to as the maximum power detecting means.
（ステップＳ０３：系統情報Ｂ１、系統情報Ｂ２を受信する）
　次に電力制御装置２の演算部２６は、電力系統９の電力に関する系統情報Ｂ１、Ｂ２を検出する。電力制御装置２の演算部２６は、内蔵する系統情報検出モジュールＭ５により自然エネルギー発電装置３の制御部３３から送信された系統情報Ｂ１、センタ装置８から送信された系統情報Ｂ２を受信することにより、電力系統９の電力に関する情報を検出する。 (Step S03: Receive system information B1 and system information B2)
Next, the calculation unit 26 of the power control device 2 detects system information B1 and B2 regarding the power of the power system 9. The calculation unit 26 of the power control device 2 receives the system information B1 transmitted from the control unit 33 of the renewable energy power generation device 3 and the system information B2 transmitted from the center device 8 by the built-in system information detection module M5. , Detects information about the power of the power system 9.
　ステップＳ０１において記憶部２５に記憶された測定対象選択情報Ｅ１に基づき、電力制御装置２の演算部２６は、自然エネルギー発電装置３ａ～３ｆのうち自然エネルギー発電装置３ａ、３ｄを選択し、自然エネルギー発電装置３ａ、３ｄにそれぞれ接続された電力測定装置４ａ、４ｄから、系統情報Ｂ１ａ、Ｂ１ｄを受信する。電力制御装置２の演算部２６は、系統情報Ｂ１ａ、Ｂ１ｄを、通信線５ａを介し通信部２１により受信する。 Based on the measurement target selection information E1 stored in the storage unit 25 in step S01, the calculation unit 26 of the power control device 2 selects the natural energy power generation devices 3a and 3d from the natural energy power generation devices 3a to 3f, and the natural energy. The system information B1a and B1d are received from the power measuring devices 4a and 4d connected to the power generation devices 3a and 3d, respectively. The calculation unit 26 of the power control device 2 receives the system information B1a and B1d by the communication unit 21 via the communication line 5a.
　また、電力制御装置２の演算部２６は、センタ装置８から系統情報Ｂ２を受信する。電力制御装置２の演算部２６は、通信線５ｃを介し、通信部２２により系統情報Ｂ２を受信する。受信した系統情報Ｂ１ａ、Ｂ１ｄ、系統情報Ｂ２は、記憶部２５に記憶される。 Further, the arithmetic unit 26 of the power control device 2 receives the system information B2 from the center device 8. The arithmetic unit 26 of the power control device 2 receives the system information B2 by the communication unit 22 via the communication line 5c. The received system information B1a, B1d, and system information B2 are stored in the storage unit 25.
　系統情報Ｂ１ａ、Ｂ１ｄには、電力系統９の電力にかかる周波数ｆに関する情報が含まれる。系統情報Ｂ２には、電力系統９の電圧、電流、周波数等の情報、電力系統９の需要電力、供給電力に関する情報が含まれる。プログラムにおけるステップＳ０３または系統情報検出モジュールＭ５を、系統情報検出手段と呼ぶ場合がある。 The system information B1a and B1d include information on the frequency f applied to the power of the power system 9. The system information B2 includes information on the voltage, current, frequency, etc. of the power system 9, information on the required power of the power system 9, and information on the supplied power. Step S03 or the system information detection module M5 in the program may be referred to as system information detection means.
（ステップＳ０４：目標電力Ｐ３の指令対象となる自然エネルギー発電装置３を選択する）
　次に電力制御装置２の演算部２６は、内蔵する指令対象選択モジュールＭ４により、目標電力Ｐ３を出力させる指令の対象となる自然エネルギー発電装置３を、複数の自然エネルギー発電装置３の中から選択する。 (Step S04: Select the renewable energy power generation device 3 to be commanded by the target power P3)
Next, the calculation unit 26 of the power control device 2 selects the renewable energy power generation device 3 to be the target of the command to output the target power P3 from the plurality of renewable energy power generation devices 3 by the built-in command target selection module M4. To do.
　目標電力Ｐ３を出力させる指令の対象として、自然エネルギー発電装置３ａ～３ｆのうち、出力電力が平均化される自然エネルギー発電装置３が選択される。例えば、大きい電力を出力している自然エネルギー発電装置３ｃ、３ｄの二つが選択される。選択される自然エネルギー発電装置３はこれに限られず、任意に選択されてよい。目標電力Ｐ３を出力させる指令の対象として選択された自然エネルギー発電装置３ｃ、３ｄは、指令対象選択情報Ｅ２として記憶部２５に記憶される。目標電力Ｐ３の指令対象となる自然エネルギー発電装置３は、最大電力Ｐ２の測定対象となる自然エネルギー発電装置３と重複していてもよい。 The renewable energy power generation device 3 whose output power is averaged is selected from the renewable energy power generation devices 3a to 3f as the target of the command to output the target power P3. For example, two renewable energy power generators 3c and 3d that output a large amount of electric power are selected. The renewable energy power generation device 3 to be selected is not limited to this, and may be arbitrarily selected. The renewable energy power generation devices 3c and 3d selected as the target of the command to output the target power P3 are stored in the storage unit 25 as the command target selection information E2. The renewable energy power generation device 3 to be commanded by the target power P3 may overlap with the renewable energy power generation device 3 to be measured by the maximum power P2.
（ステップＳ０５：周波数ｆが予め定められた周波数Δｆ２の範囲内にあるかを判断する）
　ステップＳ０３において、系統情報検出モジュールＭ５により検出され、記憶部２５に記憶された系統情報Ｂ１、Ｂ２に基づき、電力制御装置２の演算部２６は、電力系統９における電力の周波数ｆが予め定められた周波数Δｆ２の範囲内にあるかの判断を行う。 (Step S05: Determining whether the frequency f is within the predetermined frequency Δf2)
In step S03, based on the system information B1 and B2 detected by the system information detection module M5 and stored in the storage unit 25, the calculation unit 26 of the power control device 2 determines the frequency f of the power in the power system 9 in advance. It is determined whether or not the frequency is within the range of Δf2.
　電力系統９における電力の周波数ｆが、ｆ０－Δｆ２≦ｆ≦ｆ０＋Δｆ２となる範囲にある場合、電力系統９における電力の周波数ｆは、基準周波数ｆ０に対し予め定められた周波数Δｆ２の範囲内にあると判断される。 When the power frequency f in the power system 9 is in the range of f0−Δf2 ≦ f ≦ f0 + Δf2, the power frequency f in the power system 9 is within a predetermined frequency Δf2 with respect to the reference frequency f0. Is judged.
　例えば、基準周波数ｆ０＝５０Ｈｚ、Δｆ２＝０．１Ｈｚである場合、ｆ０－Δｆ２＝４９．９Ｈｚ、ｆ０＋Δｆ２＝５０．１Ｈｚである。電力系統９における電力の周波数ｆが、４９．９Ｈｚ≦ｆ≦５０．１Ｈｚである場合、電力系統９における電力の周波数ｆは、予め定められた周波数範囲内にあると判断される。 For example, when the reference frequencies f0 = 50 Hz and Δf2 = 0.1 Hz, f0-Δf2 = 49.9 Hz and f0 + Δf2 = 50.1 Hz. When the power frequency f in the power system 9 is 49.9 Hz ≦ f ≦ 50.1 Hz, it is determined that the power frequency f in the power system 9 is within a predetermined frequency range.
　周波数ｆが予め定められた周波数範囲内にあると判断した場合（ステップＳ０５のＹＥＳ）、プログラムは、ステップＳ０６に移行する。周波数ｆが予め定められた周波数範囲内にあると判断しない場合（ステップＳ０５のＮＯ）、プログラムは、ステップＳ０７に移行する。 When it is determined that the frequency f is within the predetermined frequency range (YES in step S05), the program shifts to step S06. If it is not determined that the frequency f is within the predetermined frequency range (NO in step S05), the program proceeds to step S07.
（ステップＳ０６：自然エネルギー発電装置３に最大電力Ｐ２を出力する指示を行う）
　ステップＳ０５で、周波数ｆが予め定められた周波数範囲内にあると判断された場合、電力制御装置２は、ステップＳ０４において記憶部２５に記憶された指令対象選択情報Ｅ２に基づき、選択された自然エネルギー発電装置３ｃ、３ｄに対し、目標電力指令Ｄ１により出力電力Ｐ１を最大電力Ｐ２とする指示を行う。電力制御装置２の演算部２６は、内蔵する出力調整モジュールＭ１により目標電力指令Ｄ１の指示を行う。目標電力指令Ｄ１は、通信部２３、通信線５ｂを介し自然エネルギー発電装置３ａ～３ｆに送信される。出力電力Ｐ１を最大電力Ｐ２とする指示は、全数の自然エネルギー発電装置３ａ～３ｆに対し送信されるようにしてもよい。 (Step S06: Instruct the renewable energy power generation device 3 to output the maximum power P2)
When it is determined in step S05 that the frequency f is within the predetermined frequency range, the power control device 2 selects the natural power based on the command target selection information E2 stored in the storage unit 25 in step S04. The energy power generation devices 3c and 3d are instructed to set the output power P1 to the maximum power P2 by the target power command D1. The calculation unit 26 of the power control device 2 instructs the target power command D1 by the built-in output adjustment module M1. The target power command D1 is transmitted to the renewable energy power generation devices 3a to 3f via the communication unit 23 and the communication line 5b. The instruction to set the output power P1 to the maximum power P2 may be transmitted to all the renewable energy power generation devices 3a to 3f.
（ステップＳ０７：自然エネルギー発電装置３に目標電力Ｐ３を出力する指示を行う）
　ステップＳ０５で、周波数ｆが予め定められた周波数範囲内にないと判断された場合、電力制御装置２の演算部２６は、ステップＳ０４において記憶部２５に記憶された指令対象選択情報Ｅ２に基づき、選択された自然エネルギー発電装置３ｃ、３ｄに対し、出力電力の指令である目標電力指令Ｄ１により目標電力Ｐ３にかかる電力を出力する指示を行う。電力制御装置２の演算部２６は、内蔵する出力調整モジュールＭ１により目標電力指令Ｄ１にかかる目標電力Ｐ３を算出する。目標電力指令Ｄ１は、通信部２３、通信線５ｂを介し自然エネルギー発電装置３ｃ、３ｄに送信される。 (Step S07: Instruct the renewable energy power generation device 3 to output the target power P3)
When it is determined in step S05 that the frequency f is not within the predetermined frequency range, the calculation unit 26 of the power control device 2 is based on the command target selection information E2 stored in the storage unit 25 in step S04. The selected renewable energy power generation devices 3c and 3d are instructed to output the power applied to the target power P3 by the target power command D1 which is a command of the output power. The calculation unit 26 of the power control device 2 calculates the target power P3 to be applied to the target power command D1 by the built-in output adjustment module M1. The target power command D1 is transmitted to the renewable energy power generation devices 3c and 3d via the communication unit 23 and the communication line 5b.
　目標電力Ｐ３は、ステップＳ０２において検出された最大電力Ｐ２、およびステップＳ０３において検出された系統情報Ｂ１、Ｂ２に基づき算出される。自然エネルギー発電装置３ａ、３ｄのそれぞれの最大電力Ｐ２ａ、Ｐ２ｄは、同一の太陽光発電サイトに配置された自然エネルギー発電装置３ｂ、３ｃ、３ｅ、３ｆのそれぞれの最大電力Ｐ２と近似であると類推される。したがって、自然エネルギー発電装置３ｃ、３ｄに対する目標電力Ｐ３は、最大電力Ｐ２ａ、Ｐ２ｄに基づき算出されても一定の確からしさを有する。 The target power P3 is calculated based on the maximum power P2 detected in step S02 and the system information B1 and B2 detected in step S03. It is estimated that the maximum powers P2a and P2d of the renewable energy power generation devices 3a and 3d are similar to the maximum power P2 of the renewable energy power generation devices 3b, 3c, 3e and 3f arranged at the same photovoltaic power generation site. Will be done. Therefore, the target power P3 for the renewable energy power generation devices 3c and 3d has a certain degree of certainty even if it is calculated based on the maximum powers P2a and P2d.
　自然エネルギー発電装置３ａ、３ｄにより検出された最大電力Ｐ２ａ、Ｐ２ｄ未満の電力が目標電力Ｐ３として算出される。目標電力Ｐ３は、図５、図６に示すように最大電力Ｐ２から一定の電力ΔＰが減算され算出される。図６に示すように時刻ごとに目標電力Ｐ３が算出される。 The power less than the maximum powers P2a and P2d detected by the renewable energy power generation devices 3a and 3d is calculated as the target power P3. The target power P3 is calculated by subtracting a constant power ΔP from the maximum power P2 as shown in FIGS. 5 and 6. As shown in FIG. 6, the target power P3 is calculated for each time.
　目標電力Ｐ３は、図７に示すように、最大電力Ｐ２に対し一定の比率を有するように算出されてもよい。図７に示すように時刻ごとに目標電力Ｐ３が算出される。ステップＳ０７において算出される目標電力Ｐ３を目標電力Ｐ３ｋ、後述するステップＳ１１において算出される目標電力Ｐ３を目標電力Ｐ３ｊとした場合、Ｐ３ｋ＞Ｐ３ｊとなる目標電力Ｐ３ｋが算出されることが望ましい。プログラムにおけるステップＳ０７または出力調整モジュールＭ１を出力電力指令手段と呼ぶ場合がある。 As shown in FIG. 7, the target power P3 may be calculated so as to have a constant ratio with respect to the maximum power P2. As shown in FIG. 7, the target power P3 is calculated for each time. When the target power P3 calculated in step S07 is the target power P3k and the target power P3 calculated in step S11 described later is the target power P3j, it is desirable to calculate the target power P3k such that P3k> P3j. Step S07 or the output adjustment module M1 in the program may be referred to as output power command means.
（ステップＳ０８：上位指令Ｃ１を受信したかを判断する）
　次に、電力制御装置２の演算部２６は、センタ装置８から上位指令Ｃ１を受信したかの判断を行う。上位指令Ｃ１は、センタ装置８から、通信線５ｃ、通信部２２を介し演算部２６に送信される。上位指令Ｃ１には、自然エネルギー発電装置３の出力電力を増加、減少させる指令、および増加量または減少量が含まれる。 (Step S08: Determine whether the higher command C1 has been received)
Next, the calculation unit 26 of the power control device 2 determines whether or not the higher command C1 has been received from the center device 8. The higher-level command C1 is transmitted from the center device 8 to the calculation unit 26 via the communication line 5c and the communication unit 22. The higher-level command C1 includes a command for increasing or decreasing the output power of the renewable energy power generation device 3, and an amount of increase or decrease.
　上位指令Ｃ１を受信したと判断した場合（ステップＳ０８のＹＥＳ）、プログラムは、ステップＳ０９に移行する。上位指令Ｃ１を受信したと判断しない場合（ステップＳ０８のＮＯ）、プログラムは、ステップＳ１０に移行する。 If it is determined that the higher command C1 has been received (YES in step S08), the program proceeds to step S09. If it is not determined that the higher command C1 has been received (NO in step S08), the program proceeds to step S10.
（ステップＳ０９：自然エネルギー発電装置３に目標電力Ｐ３を出力する指示を行う）
　ステップＳ０８で、上位指令Ｃ１を受信したと判断された場合、電力制御装置２の演算部２６は、ステップＳ０４において記憶部２５に記憶された指令対象選択情報Ｅ２に基づき、選択された自然エネルギー発電装置３ｃ、３ｄに対し、目標電力指令Ｄ１により目標電力Ｐ３にかかる電力を出力する指示を行う。電力制御装置２の演算部２６は、内蔵する出力調整モジュールＭ１により目標電力指令Ｄ１にかかる目標電力Ｐ３の算出を行う。目標電力指令Ｄ１は、通信部２３、通信線５ｂを介し自然エネルギー発電装置３ｃ、３ｄに送信される。 (Step S09: Instruct the renewable energy power generation device 3 to output the target power P3)
When it is determined in step S08 that the higher-level command C1 has been received, the calculation unit 26 of the power control device 2 selects renewable energy power generation based on the command target selection information E2 stored in the storage unit 25 in step S04. The devices 3c and 3d are instructed to output the power applied to the target power P3 by the target power command D1. The calculation unit 26 of the power control device 2 calculates the target power P3 to be applied to the target power command D1 by the built-in output adjustment module M1. The target power command D1 is transmitted to the renewable energy power generation devices 3c and 3d via the communication unit 23 and the communication line 5b.
　目標電力Ｐ３は、ステップＳ０８において受信したと判断された上位指令Ｃ１に含まれる出力電力を増加、減少させる指令、および増加量または減少量に基づき算出される。上位指令Ｃ１が自然エネルギー発電装置３の出力電力Ｐ１を増加させることを指示するものである場合、上位指令Ｃ１にかかる増加量が、自然エネルギー発電装置３ｃ、３ｄに按分され目標電力Ｐ３が算出される。自然エネルギー発電装置３ｃ、３ｄは、目標電力指令Ｄ１を受信し、目標電力Ｐ３に出力電力Ｐ１を増加させる。 The target power P3 is calculated based on the command for increasing or decreasing the output power included in the higher-level command C1 determined to have been received in step S08, and the amount of increase or decrease. When the higher-level command C1 instructs to increase the output power P1 of the renewable energy power generation device 3, the amount of increase applied to the higher-level command C1 is apportioned to the renewable energy power generation devices 3c and 3d to calculate the target power P3. To. The renewable energy power generation devices 3c and 3d receive the target power command D1 and increase the output power P1 to the target power P3.
　上位指令Ｃ１が自然エネルギー発電装置３の出力電力を減少させることを指示するものである場合、上位指令Ｃ１にかかる減少量が、自然エネルギー発電装置３ｃ、３ｄに按分され目標電力Ｐ３が算出される。自然エネルギー発電装置３ｃ、３ｄは、目標電力指令Ｄ１を受信し、目標電力Ｐ３に出力電力Ｐ１を減少させる。 When the higher-level command C1 instructs to reduce the output power of the renewable energy power generation device 3, the reduction amount applied to the higher-level command C1 is apportioned to the renewable energy power generation devices 3c and 3d to calculate the target power P3. .. The renewable energy power generation devices 3c and 3d receive the target power command D1 and reduce the output power P1 to the target power P3.
　自然エネルギー発電装置３に目標電力Ｐ３を出力する指示を行うステップＳ０９にかかる動作は、ステップＳ０５～Ｓ０７にかかる動作に優先して行われる。プログラムにおけるステップＳ０９または出力調整モジュールＭ１を出力電力指令手段と呼ぶ場合がある。 The operation related to step S09 for instructing the renewable energy power generation device 3 to output the target power P3 is performed in preference to the operation related to steps S05 to S07. Step S09 or the output adjustment module M1 in the program may be referred to as output power command means.
（ステップＳ１０：周波数ｆが予め定められた周波数Δｆ１の範囲内にあるか判断する）
　電力制御装置２の演算部２６は、ステップＳ０３において、系統情報検出モジュールＭ５により検出され、記憶部２５に記憶された系統情報Ｂ１、Ｂ２に基づき、電力系統９における電力の周波数ｆが予め定められた周波数Δｆ１の範囲内にあるかの判断を行う。 (Step S10: Determine if the frequency f is within the predetermined frequency Δf1)
In step S03, the calculation unit 26 of the power control device 2 determines the frequency f of the power in the power system 9 in advance based on the system information B1 and B2 detected by the system information detection module M5 and stored in the storage unit 25. It is determined whether or not the frequency is within the range of Δf1.
　電力系統９における電力の周波数ｆが、ｆ０－Δｆ１≦ｆ≦ｆ０＋Δｆ１となる範囲にある場合、電力系統９における電力の周波数ｆは、基準周波数ｆ０に対し予め定められた周波数Δｆ１の範囲内にあると判断される。 When the power frequency f in the power system 9 is in the range of f0−Δf1 ≦ f ≦ f0 + Δf1, the power frequency f in the power system 9 is within the range of the frequency Δf1 predetermined with respect to the reference frequency f0. Is judged.
　例えば、基準周波数ｆ０＝５０Ｈｚ、Δｆ１＝１Ｈｚである場合、ｆ０－Δｆ１＝４９Ｈｚ、ｆ０＋Δｆ１＝５１Ｈｚである。電力系統９における電力の周波数ｆが、４９Ｈｚ≦ｆ≦５１Ｈｚである場合、電力系統９における電力の周波数ｆは、予め定められた周波数範囲内にあると判断される。 For example, when the reference frequencies f0 = 50 Hz and Δf1 = 1 Hz, f0-Δf1 = 49 Hz and f0 + Δf1 = 51 Hz. When the power frequency f in the power system 9 is 49 Hz ≦ f ≦ 51 Hz, it is determined that the power frequency f in the power system 9 is within a predetermined frequency range.
　周波数ｆが予め定められた周波数Δｆ１の範囲内にあると判断しない場合（ステップＳ１０のＮＯ）、プログラムは、ステップＳ１１に移行する。周波数ｆが予め定められた周波数Δｆ１の範囲内にあると判断した場合（ステップＳ１０のＹＥＳ）、プログラムは、ステップＳ１２に移行する。 If it is not determined that the frequency f is within the predetermined frequency Δf1 (NO in step S10), the program shifts to step S11. When it is determined that the frequency f is within the range of the predetermined frequency Δf1 (YES in step S10), the program shifts to step S12.
（ステップＳ１１：自然エネルギー発電装置３に目標電力Ｐ３を出力する指示を行う）
　ステップＳ１０で、周波数ｆが予め定められた周波数Δｆ１の範囲内にないと判断された場合、電力制御装置２の演算部２６は、ステップＳ０４において、指令対象選択モジュールＭ４により記憶部２５に記憶された指令対象選択情報Ｅ２に基づき、選択された自然エネルギー発電装置３ｃ、３ｄに対し、出力電力の指令である目標電力指令Ｄ１により目標電力Ｐ３にかかる電力を出力する指示を行う。電力制御装置２の演算部２６は、内蔵する出力調整モジュールＭ１により目標電力指令Ｄ１にかかる目標電力Ｐ３を算出する。目標電力指令Ｄ１は、通信部２３、通信線５ｂを介し自然エネルギー発電装置３ｃ、３ｄに送信される。 (Step S11: Instruct the renewable energy power generation device 3 to output the target power P3)
When it is determined in step S10 that the frequency f is not within the range of the predetermined frequency Δf1, the calculation unit 26 of the power control device 2 is stored in the storage unit 25 by the command target selection module M4 in step S04. Based on the command target selection information E2, the selected renewable energy power generation devices 3c and 3d are instructed to output the power applied to the target power P3 by the target power command D1 which is a command of the output power. The calculation unit 26 of the power control device 2 calculates the target power P3 to be applied to the target power command D1 by the built-in output adjustment module M1. The target power command D1 is transmitted to the renewable energy power generation devices 3c and 3d via the communication unit 23 and the communication line 5b.
　目標電力Ｐ３は、現在自然エネルギー発電装置３ｃ、３ｄから出力されている出力電力Ｐ１未満に設定される。また、ステップＳ０７において算出される目標電力Ｐ３を目標電力Ｐ３ｋ、ステップＳ１１において算出される目標電力Ｐ３を目標電力Ｐ３ｊとした場合、Ｐ３ｋ＞Ｐ３ｊとなる目標電力Ｐ３ｊが算出されることが望ましい。自然エネルギー発電装置３に目標電力Ｐ３を出力する指示を行うステップＳ１１にかかる動作は、ステップＳ０５～Ｓ０９にかかる動作に優先して行われる。 The target power P3 is set to be less than the output power P1 currently output from the renewable energy power generation devices 3c and 3d. Further, when the target power P3 calculated in step S07 is the target power P3k and the target power P3 calculated in step S11 is the target power P3j, it is desirable to calculate the target power P3j such that P3k> P3j. The operation related to step S11 for instructing the renewable energy power generation device 3 to output the target power P3 is performed in preference to the operations related to steps S05 to S09.
　自然エネルギー発電装置３により発電された電力が電力系統９に供給された場合であっても、電力系統９における火力、水力、原子力等の発電装置（図中不示）は、電力系統９の周波数を一定の周波数に保つ制御を行う。しかしながら、電力系統９における電力の周波数ｆが、ｆ０－Δｆ１≦ｆ≦ｆ０＋Δｆ１の範囲にない場合、例えば４９Ｈｚ≦ｆ≦５１Ｈｚの範囲にない場合、火力、水力、原子力等の発電装置により安定的な周波数制御が、行われていないものと類推される。 Even when the power generated by the renewable energy power generation device 3 is supplied to the power system 9, the power generation devices such as thermal power, hydraulic power, and nuclear power in the power system 9 (not shown in the figure) have the frequencies of the power system 9. Is controlled to keep the frequency constant. However, when the frequency f of the electric power in the electric power system 9 is not in the range of f0-Δf1 ≦ f ≦ f0 + Δf1, for example, when it is not in the range of 49 Hz ≦ f ≦ 51 Hz, it is more stable due to a power generation device such as thermal power, hydraulic power, or nuclear power. It is inferred that frequency control is not performed.
　自然エネルギー発電装置３の出力電力Ｐ１は、日射や風速等の気象条件の影響を受けて時々刻々変動する。また火力、水力、原子力等の発電装置と、自然エネルギー発電装置３の出力電力の応答速度特性は、それぞれ異なる。このため、火力、水力、原子力等の発電装置および自然エネルギー発電装置３から出力される電力どうしが互いに干渉し、火力、水力、原子力等の発電装置による周波数制御が、効率よく機能しない場合がある。 The output power P1 of the renewable energy power generation device 3 fluctuates from moment to moment due to the influence of weather conditions such as solar radiation and wind speed. Further, the response speed characteristics of the output power of the power generation device such as thermal power, hydraulic power, nuclear power, and the renewable energy power generation device 3 are different from each other. For this reason, power generation devices such as thermal power, hydraulic power, and nuclear power and electric power output from the renewable energy power generation device 3 may interfere with each other, and frequency control by the power generation devices such as thermal power, hydraulic power, and nuclear power may not function efficiently. ..
　火力、水力、原子力等の発電装置による周波数制御が、効率よく機能しない場合、自然エネルギー発電装置３の出力電力Ｐ１を抑制することが望ましい。応答速度特性が異なる自然エネルギー発電装置３の出力電力Ｐ１の、電力系統９における比率を低減させ、火力、水力、原子力等の発電装置による安定的な周波数制御を確保するためである。 When frequency control by power generation devices such as thermal power, hydraulic power, and nuclear power does not function efficiently, it is desirable to suppress the output power P1 of the renewable energy power generation device 3. This is to reduce the ratio of the output power P1 of the renewable energy power generation device 3 having different response speed characteristics in the power system 9 and to secure stable frequency control by the power generation devices such as thermal power, hydraulic power, and nuclear power.
　したがって、自然エネルギー発電装置３の出力電力Ｐ１が少ない場合であっても、電力制御装置２の演算部２６は、図８に示すように自然エネルギー発電装置３ｃ、３ｄに対し、目標電力指令Ｄ１にかかる目標電力Ｐ３により、出力電力Ｐ１を減少させる指示を行う。また、ステップＳ０８においてセンタ装置８から上位指令Ｃ１により自然エネルギー発電装置３の出力電力Ｐ１を増加させる指令を受けた場合であっても、電力制御装置２の演算部２６は、自然エネルギー発電装置３ｃ、３ｄに対し、目標電力指令Ｄ１にかかる目標電力Ｐ３により、出力電力Ｐ１を減少させる指示を行う。 Therefore, even when the output power P1 of the renewable energy power generation device 3 is small, the calculation unit 26 of the power control device 2 issues the target power command D1 to the renewable energy power generation devices 3c and 3d as shown in FIG. The target power P3 gives an instruction to reduce the output power P1. Further, even when a command for increasing the output power P1 of the renewable energy power generation device 3 is received from the center device 8 by the higher command C1 in step S08, the calculation unit 26 of the power control device 2 still uses the renewable energy power generation device 3c. 3d is instructed to reduce the output power P1 by the target power P3 applied to the target power command D1.
　電力系統９における電力の周波数ｆが、ｆ０－Δｆ１未満である場合、電力制御装置２の出力電力指令手段は、自然エネルギー発電装置３に対し、目標電力指令Ｄ１により出力電力Ｐ１を減少させる自然エネルギー出力電力抑制指示を行う。 When the frequency f of the electric power in the electric power system 9 is less than f0-Δf1, the output electric power command means of the electric power control device 2 causes the renewable energy power generation apparatus 3 to reduce the output electric power P1 by the target electric power command D1. Gives an output power suppression instruction.
　目標電力Ｐ３は、目標電力指令Ｄ１により全数の自然エネルギー発電装置３ａ～３ｆに送信されるようにしてもよい。目標電力指令Ｄ１により目標電力Ｐ３を指示された自然エネルギー発電装置３ａ～３ｆは、出力電力Ｐ１を減少させる。プログラムにおけるステップＳ１１または出力調整モジュールＭ１を出力電力指令手段と呼ぶ場合がある。 The target power P3 may be transmitted to all the renewable energy power generation devices 3a to 3f according to the target power command D1. The renewable energy power generation devices 3a to 3f in which the target power P3 is instructed by the target power command D1 reduce the output power P1. Step S11 or the output adjustment module M1 in the program may be referred to as output power command means.
（ステップＳ１２：差分電力Ｐ４を算出する）
　次に、電力制御装置２の演算部２６は、差分電力Ｐ４の算出を行う。電力制御装置２の演算部２６は、内蔵する差分算出モジュールＭ２により自然エネルギー発電装置３から出力された出力電力Ｐ１と、自然エネルギー発電装置３から出力することが可能な最大電力Ｐ２との差分である差分電力Ｐ４を算出する。差分電力Ｐ４は、自然エネルギー発電装置３ａ～３ｆごとに算出される。 (Step S12: Calculate the differential power P4)
Next, the calculation unit 26 of the power control device 2 calculates the differential power P4. The calculation unit 26 of the power control device 2 is the difference between the output power P1 output from the renewable energy power generation device 3 by the built-in difference calculation module M2 and the maximum power P2 that can be output from the natural energy power generation device 3. A certain differential power P4 is calculated. The differential power P4 is calculated for each of the renewable energy power generation devices 3a to 3f.
（ステップＳ１３：差分電力Ｐ４を出力する）
　次に、電力制御装置２の演算部２６は、ステップＳ１２で算出した差分電力Ｐ４にかかるデータを、出力部２４に出力させる。出力部２４は、差分電力Ｐ４にかかるデータを表示、プリント、通信電文により出力する。出力された差分電力Ｐ４にかかるデータは、自然エネルギー発電装置３の運営会社による料金請求等に役立てられる。プログラムにおけるステップＳ１３および出力部２４を出力手段と呼ぶ場合がある。 (Step S13: Output the differential power P4)
Next, the calculation unit 26 of the power control device 2 causes the output unit 24 to output the data related to the differential power P4 calculated in step S12. The output unit 24 displays, prints, and outputs the data related to the differential power P4 by a communication telegram. The output data related to the differential power P4 is useful for billing charges by the operating company of the renewable energy power generation device 3. Step S13 and the output unit 24 in the program may be referred to as output means.
　以上が、電力制御システム１の動作である。周波数ｆが、電力系統９の火力、水力、原子力等の発電装置により周波数制御可能である周波数Δｆ３の範囲内にない場合、自然エネルギー発電装置３ａ～３ｆに対し、目標電力Ｐ３をゼロとする目標電力指令Ｄ１が送信されるようにしてもよい。図９に示すように電力系統９の周波数ｆが基準周波数ｆ０から離間するほど、自然エネルギー発電装置３の出力電力Ｐ１は抑制される。 The above is the operation of the power control system 1. When the frequency f is not within the range of the frequency Δf3 whose frequency can be controlled by the power generation devices such as thermal power, hydraulic power, and nuclear power of the power system 9, the target power P3 is set to zero for the renewable energy power generation devices 3a to 3f. The power command D1 may be transmitted. As shown in FIG. 9, the output power P1 of the renewable energy power generation device 3 is suppressed as the frequency f of the power system 9 is separated from the reference frequency f0.
［１－３．効果］
（１）本実施形態によれば、電力制御システム１は、自然エネルギーにより発電を行い電力系統９に電力を供給する自然エネルギー発電装置３と、自然エネルギー発電装置３から出力される最大電力Ｐ２を検出する最大電力検出手段と、電力系統９の電力に関する系統情報Ｂ１、Ｂ２を検出する系統情報検出手段と、最大電力検出手段により検出された最大電力Ｐ２、および系統情報検出手段により検出された系統情報Ｂ１、Ｂ２に基づき、自然エネルギー発電装置３に出力させる最大電力Ｐ２以下である目標電力Ｐ３を算出し指示する出力電力指令手段と、を備えた電力制御装置２と、を有するので、自然エネルギー発電装置３を含む電力系統９を、安定的に制御することができる電力制御システム１を提供することができる。 [1-3. effect]
(1) According to the present embodiment, the power control system 1 generates a natural energy power generation device 3 that generates power by natural energy and supplies power to the power system 9, and a maximum power P2 output from the natural energy power generation device 3. The maximum power detecting means to be detected, the system information detecting means for detecting the system information B1 and B2 related to the power of the power system 9, the maximum power P2 detected by the maximum power detecting means, and the system detected by the system information detecting means. Since it has an output power command means for calculating and instructing a target power P3 which is equal to or less than the maximum power P2 to be output to the renewable energy power generation device 3 based on the information B1 and B2, and a power control device 2 provided with the natural energy. It is possible to provide a power control system 1 capable of stably controlling a power system 9 including a power generation device 3.
　自然エネルギー発電装置３は、目標電力指令Ｄ１により目標電力Ｐ３を指示され、最大電力Ｐ２以下である目標電力Ｐ３にかかる出力電力Ｐ１を出力するので、電力系統９が安定となるような目標電力Ｐ３にかかる出力電力Ｐ１を、自然エネルギー発電装置３に出力させることができる。 The renewable energy power generation device 3 is instructed by the target power command D1 to output the target power P3, and outputs the output power P1 applied to the target power P3 which is equal to or less than the maximum power P2. The output power P1 applied to the above can be output to the renewable energy power generation device 3.
　また、自然エネルギー発電装置３は、最大電力Ｐ２以下である出力電力Ｐ１を出力しており、急峻な出力電力Ｐ１の増加の要求が、上位指令Ｃ１によりセンタ装置８から指令された場合であっても容易に出力電力Ｐ１を増加させることができる。 Further, the renewable energy power generation device 3 outputs an output power P1 which is equal to or less than the maximum power P2, and a steep request for an increase in the output power P1 is commanded by the center device 8 by the higher-level command C1. The output power P1 can be easily increased.
（２）本実施形態によれば、電力制御システム１は、系統情報検出手段により検出された系統情報Ｂ１、Ｂ２に基づき、電力系統９の電力が予め定められた第１の周波数Δｆ１の範囲内にないと判断した場合、出力電力指令手段（ステップＳ１１または出力調整モジュールＭ１）は、自然エネルギー発電装置３に対し、出力電力Ｐ１を減少させる指示を行うので、自然エネルギー発電装置３を含む電力系統９を、安定的に制御することができる電力制御システム１を提供することができる。 (2) According to the present embodiment, the power control system 1 has the power of the power system 9 within a predetermined range of the first frequency Δf1 based on the system information B1 and B2 detected by the system information detecting means. If it is determined that the power system does not exist, the output power command means (step S11 or the output adjustment module M1) instructs the renewable energy power generation device 3 to reduce the output power P1. Therefore, the power system including the renewable energy power generation device 3 It is possible to provide a power control system 1 capable of stably controlling 9.
　本実施形態によれば、系統情報検出手段により検出された系統情報Ｂ１、Ｂ２に基づき、電力系統９の電力が予め定められた第１の周波数範囲未満であると判断した場合、出力電力指令手段は、自然エネルギー発電装置３に対し、出力電力Ｐ１を減少させる自然エネルギー出力電力抑制指示を行うので、自然エネルギー発電装置３を含む電力系統９を、安定的に制御することができる電力制御システム１を提供することができる。自然エネルギー発電装置３に対し送信される目標電力指令Ｄ１のうち、出力電力を減少させる指示を自然エネルギー出力電力抑制指示と呼ぶ。 According to the present embodiment, when it is determined that the power of the power system 9 is less than the predetermined first frequency range based on the system information B1 and B2 detected by the system information detecting means, the output power command means. Instructs the renewable energy power generation device 3 to suppress the output power P1 to reduce the output power P1. Therefore, the power control system 1 capable of stably controlling the power system 9 including the renewable energy power generation device 3. Can be provided. Of the target power command D1 transmitted to the renewable energy power generation device 3, the instruction for reducing the output power is called the renewable energy output power suppression instruction.
　自然エネルギー発電装置３の出力電力Ｐ１は、日射や風速等の気象条件の影響を受けて時々刻々変動する。また火力、水力、原子力等の発電装置と、自然エネルギー発電装置３の出力電力の応答速度特性は、それぞれ異なる。このため、火力、水力、原子力等の発電装置および自然エネルギー発電装置３から出力される電力どうしが互いに干渉し、火力、水力、原子力等の発電装置による周波数制御が、効率よく機能しない場合がある。 The output power P1 of the renewable energy power generation device 3 fluctuates from moment to moment due to the influence of weather conditions such as solar radiation and wind speed. Further, the response speed characteristics of the output power of the power generation device such as thermal power, hydraulic power, nuclear power, and the renewable energy power generation device 3 are different from each other. For this reason, power generation devices such as thermal power, hydraulic power, and nuclear power and electric power output from the renewable energy power generation device 3 may interfere with each other, and frequency control by the power generation devices such as thermal power, hydraulic power, and nuclear power may not function efficiently. ..
　火力、水力、原子力等の発電装置による周波数制御が、効率よく機能しない場合、自然エネルギー発電装置３の出力電力Ｐ１を抑制することが望ましい。電力系統９の電力が予め定められた第１の周波数範囲未満である場合であっても、自然エネルギー発電装置３に対し、出力電力Ｐ１を減少させる指示を行うので、自然エネルギー発電装置３の出力電力Ｐ１の、電力系統９における比率を低減させ、火力、水力、原子力等の発電装置による安定的な周波数制御を確保することができる。これにより、自然エネルギー発電装置３を含む電力系統９を、安定的に制御することができる。 When frequency control by power generation devices such as thermal power, hydraulic power, and nuclear power does not function efficiently, it is desirable to suppress the output power P1 of the renewable energy power generation device 3. Even when the power of the power system 9 is less than the predetermined first frequency range, the renewable energy power generation device 3 is instructed to reduce the output power P1, so that the output of the renewable energy power generation device 3 is output. It is possible to reduce the ratio of the electric power P1 in the electric power system 9 and secure stable frequency control by a power generation device such as thermal power, hydraulic power, or nuclear power. As a result, the electric power system 9 including the renewable energy power generation device 3 can be stably controlled.
（３）本実施形態によれば、電力制御装置２は、出力電力指令手段に指示された目標電力Ｐ３に基づき自然エネルギー発電装置３から出力された出力電力Ｐ１と、最大電力検出手段により検出された最大電力Ｐ２と、の差分電力Ｐ４を算出し出力する出力手段を有するので、出力された差分電力Ｐ４にかかるデータは、自然エネルギー発電装置３の運営会社による料金請求等に役立てられる。 (3) According to the present embodiment, the power control device 2 is detected by the output power P1 output from the renewable energy power generation device 3 based on the target power P3 instructed by the output power command means and the maximum power detecting means. Since it has an output means for calculating and outputting the differential power P4 with the maximum power P2, the data related to the output differential power P4 is useful for billing by the operating company of the renewable energy power generation device 3.
（４）本実施形態によれば、電力制御装置２は、系統情報検出手段により検出された系統情報Ｂ１、Ｂ２に基づき、電力系統の電力が予め定められた第２の周波数Δｆ２の範囲内にあると判断した場合、出力電力指令手段は、自然エネルギー発電装置３に対し、最大電力にて出力させる指示を行うので、自然エネルギー発電装置３の出力電力Ｐ１は、最大電力Ｐ２未満に抑制されず、効率よく自然エネルギー発電装置３の出力電力Ｐ１を電力系統９に供給することができる。 (4) According to the present embodiment, the power control device 2 has the power of the power system within a predetermined second frequency Δf2 based on the system information B1 and B2 detected by the system information detecting means. If it is determined that there is, the output power command means instructs the renewable energy power generation device 3 to output at the maximum power, so that the output power P1 of the natural energy power generation device 3 is not suppressed to less than the maximum power P2. , The output power P1 of the renewable energy power generation device 3 can be efficiently supplied to the power system 9.
（６）本実施形態によれば、電力制御装置２の最大電力検出手段は、複数の自然エネルギー発電装置３のうち、所定の自然エネルギー発電装置３の最大電力Ｐ２を検出するので、多数の自然エネルギー発電装置３の最大電力Ｐ２の測定を行うことなく、容易に最大電力Ｐ２の測定を行うことができる。同一の太陽光発電サイトに配置された自然エネルギー発電装置３の最大電力Ｐ２は近似するものと類推される。 (6) According to the present embodiment, the maximum power detecting means of the power control device 2 detects the maximum power P2 of the predetermined natural energy power generation device 3 among the plurality of natural energy power generation devices 3, so that a large number of natural power generation devices 3 are detected. The maximum power P2 can be easily measured without measuring the maximum power P2 of the energy power generation device 3. It is inferred that the maximum power P2 of the renewable energy power generation device 3 arranged at the same photovoltaic power generation site is similar.
［１－４．変形例］
（１）第１の変形例
　上記実施形態によれば、電力系統９の電力が第１の周波数Δｆ１の範囲未満である場合、電力制御装置２の出力電力指令手段は、自然エネルギー発電装置３に対し、目標電力指令Ｄ１により出力電力Ｐ１を減少させる自然エネルギー出力電力抑制指示を行うものとした。 [1-4. Modification example]
(1) First Modification Example According to the above embodiment, when the power of the power system 9 is less than the range of the first frequency Δf1, the output power command means of the power control device 2 is set to the renewable energy power generation device 3. On the other hand, the target power command D1 is used to give an instruction to suppress the natural energy output power to reduce the output power P1.
　電力系統９における電力の周波数ｆが、ｆ０－Δｆ１≦ｆ≦ｆ０＋Δｆ１の範囲にない場合、例えば４９Ｈｚ≦ｆ≦５１Ｈｚの範囲にない場合、火力、水力、原子力等の発電装置により安定的な周波数制御が、行われていないものと類推される。したがって電力系統９における電力の周波数ｆが、ｆ０－Δｆ１未満である場合であっても、電力制御装置２は、ステップＳ１１により自然エネルギー発電装置３に対し、出力電力Ｐ１を減少させる自然エネルギー出力電力抑制指示を行うものとした。自然エネルギー発電装置３の出力電力Ｐ１の、電力系統９における比率を低減させ、火力、水力、原子力等の発電装置による安定的な周波数制御を確保するためである。 When the frequency f of the electric power in the power system 9 is not in the range of f0-Δf1 ≦ f ≦ f0 + Δf1, for example, when it is not in the range of 49 Hz ≦ f ≦ 51 Hz, stable frequency control by a power generation device such as thermal power, hydraulic power, or nuclear power. However, it is presumed that it has not been done. Therefore, even when the frequency f of the electric power in the electric power system 9 is less than f0-Δf1, the electric power control device 2 reduces the output electric power P1 with respect to the renewable energy power generation apparatus 3 in step S11. Suppression instructions were given. This is to reduce the ratio of the output power P1 of the renewable energy power generation device 3 in the power system 9 and to ensure stable frequency control by power generation devices such as thermal power, hydraulic power, and nuclear power.
　上記実施形態において、目標電力指令Ｄ１の自然エネルギー出力電力抑制指示により減少させられる電力は、電力需給が行われる時間帯における平均電力であってよい。減少させられる電力は、自然エネルギー発電装置３から出力される平均電力である。また、時間帯は、電力の需給調整が行われる時間間隔に対応した時間幅である。電力の需給調整は、例えば３０分、５分等の時間帯ごとに行われる。 In the above embodiment, the electric power reduced by the natural energy output electric power suppression instruction of the target electric power command D1 may be the average electric power in the time zone when the electric power supply and demand is performed. The reduced power is the average power output from the renewable energy power generation device 3. In addition, the time zone is a time width corresponding to the time interval in which the supply and demand of electric power is adjusted. The supply and demand adjustment of electric power is performed every time zone such as 30 minutes and 5 minutes.
　目標電力指令Ｄ１の自然エネルギー出力電力抑制指示は、電力需給調整における直前の時間帯における出力電力の平均より、直後の時間帯における出力電力の平均を減少させる指示である。自然エネルギー出力電力抑制指示により減少させられる出力電力は、自然エネルギー発電装置３から出力される、電力需給調整における時間帯における平均電力である。 The renewable energy output power suppression instruction of the target power command D1 is an instruction to reduce the average of the output power in the immediately preceding time zone from the average of the output power in the immediately preceding time zone in the power supply and demand adjustment. The output power reduced by the renewable energy output power suppression instruction is the average power output from the renewable energy power generation device 3 in the time zone in the power supply and demand adjustment.
　目標電力指令Ｄ１の自然エネルギー出力電力抑制指示は、自然エネルギー出力電力抑制指示の対象となる時間帯の、電力系統の電力が予め定められた第１の周波数範囲未満であると判断された直後の時間において、直前の時間帯における電力より、出力電力を増加させる指示を含んでいてよい。 The renewable energy output power suppression instruction of the target power command D1 is immediately after it is determined that the power of the power system is less than the predetermined first frequency range in the time zone subject to the natural energy output power suppression instruction. In time, it may include an instruction to increase the output power from the power in the immediately preceding time zone.
　電力系統９における電力の周波数ｆが、ｆ０－Δｆ１未満である場合、電力系統９における供給電力が需要電力に対し不足し、かつ火力、水力、原子力等の発電装置による安定的な周波数制御が、行われていないものと類推される。したがって、迅速に自然エネルギー発電装置３から出力される電力を減少させ、迅速に火力、水力、原子力等の発電装置から出力される電力を増加させることが好ましい。 When the frequency f of the electric power in the electric power system 9 is less than f0-Δf1, the electric power supplied in the electric power system 9 is insufficient with respect to the demanded electric power, and stable frequency control by a power generation device such as thermal power, hydraulic power, or nuclear power is performed. It is presumed that it has not been done. Therefore, it is preferable to quickly reduce the electric power output from the renewable energy power generation device 3 and quickly increase the electric power output from the power generation devices such as thermal power, hydraulic power, and nuclear power.
　しかしながら、火力、水力、原子力等の発電装置から出力される電力は、迅速に増加されにくい。火力、水力、原子力等の発電装置から出力される電力は、一定の増加速度、減少速度を有する。 However, the power output from power generation equipment such as thermal power, hydraulic power, and nuclear power is unlikely to increase rapidly. Electric power output from power generation devices such as thermal power, hydraulic power, and nuclear power has a constant rate of increase and decrease.
　したがって、電力系統９における電力の周波数ｆがｆ０－Δｆ１未満となった直後の時間において、電力制御装置２は、自然エネルギー発電装置３に対し、目標電力指令Ｄ１により出力電力を増加させる指示を行う。目標電力指令Ｄ１により送信される自然エネルギー出力電力抑制指示は、自然エネルギー出力電力抑制指示の対象となる時間帯の一部の時間において、直前の時間帯における電力より、出力電力を増加させる指示を含む。 Therefore, in the time immediately after the power frequency f in the power system 9 becomes less than f0-Δf1, the power control device 2 instructs the renewable energy power generation device 3 to increase the output power by the target power command D1. .. The natural energy output power suppression instruction transmitted by the target power command D1 is an instruction to increase the output power from the power in the immediately preceding time zone at a part of the time zone subject to the natural energy output power suppression instruction. Including.
　例えば、電力需給調整における時間帯が３０分であり、目標電力指令Ｄ１が５分ごとに送信される場合、電力系統９における電力の周波数ｆがｆ０－Δｆ１未満となった直後の時間帯における、冒頭の５分において目標電力指令Ｄ１により出力電力を増加させる指示が、電力制御装置２により自然エネルギー発電装置３に対し行われる。 For example, when the time zone for power supply and demand adjustment is 30 minutes and the target power command D1 is transmitted every 5 minutes, the time zone immediately after the power frequency f in the power system 9 becomes less than f0-Δf1. In the first 5 minutes, the power control device 2 gives an instruction to the renewable energy power generation device 3 to increase the output power by the target power command D1.
　電力制御装置２は、自然エネルギー発電装置３に対し、目標電力指令Ｄ１に含まれる自然エネルギー出力電力抑制指示により、電力需給調整における直前の時間帯における出力電力の平均より、直後の時間帯における出力電力の平均を減少させる指示を行う。 The power control device 2 gives the renewable energy power generation device 3 an output in the time zone immediately after the average of the output power in the time zone immediately before in the power supply and demand adjustment by the instruction to suppress the natural energy output power included in the target power command D1. Instruct to reduce the average power.
　電力制御装置２は、自然エネルギー発電装置３に対し、自然エネルギー発電装置３を除く電力系統９に接続された発電装置から出力される電力の、増加速度に基づき算出された減少速度により、出力電力を減少させる指示を行う。電力系統９に接続された自然エネルギー発電装置３を除く発電装置は、例えば火力、水力、原子力等の発電装置である。 The power control device 2 has an output power of the renewable energy power generation device 3 according to a decrease rate calculated based on an increase rate of the power output from the power generation device connected to the power system 9 excluding the renewable energy power generation device 3. Give instructions to reduce. The power generation device other than the renewable energy power generation device 3 connected to the power system 9 is, for example, a power generation device for thermal power, hydraulic power, nuclear power, or the like.
　図１０に基づき、時刻１２：００に、電力系統９における電力の周波数ｆが、ｆ０－Δｆ１未満となった場合の電力制御装置２の動作を説明する。図１０は、各時刻における、自然エネルギー発電装置３に対し目標電力指令Ｄ１により送信される目標電力Ｐ３と、自然エネルギー発電装置３の出力電力Ｐ１の関係を示す。目標電力指令Ｄ１は、自然エネルギー出力電力抑制指示を含む。 Based on FIG. 10, the operation of the power control device 2 when the frequency f of the power in the power system 9 becomes less than f0-Δf1 at 12:00 will be described. FIG. 10 shows the relationship between the target power P3 transmitted by the target power command D1 to the renewable energy power generation device 3 and the output power P1 of the renewable energy power generation device 3 at each time. The target power command D1 includes a natural energy output power suppression instruction.
　一例として、電力の需給調整が行われる時間間隔が３０分、電力制御装置２から目標電力指令Ｄ１が送信される周期が５分である場合について説明する。電力の需給調整が行われる時間間隔のうち、１１：３０から１２：００が時間帯Ａ、１２：００から１２：３０が時間帯Ｂであるものとする。 As an example, a case where the time interval for adjusting the supply and demand of electric power is 30 minutes and the cycle in which the target electric power command D1 is transmitted from the electric power control device 2 is 5 minutes will be described. It is assumed that 11:30 to 12:00 is the time zone A and 12:00 to 12:30 is the time zone B in the time interval in which the supply and demand adjustment of electric power is performed.
　電力制御装置２は、自然エネルギー発電装置３に対し、目標電力指令Ｄ１に含まれる自然エネルギー出力電力抑制指示により、時間帯Ａにおける平均電力より、時間帯Ｂにおける平均電力を減少させる指示を行う。 The power control device 2 gives an instruction to the renewable energy power generation device 3 to reduce the average power in the time zone B from the average power in the time zone A by the instruction to suppress the renewable energy output power included in the target power command D1.
　時刻１２：００に、図４に示すプログラムにより、電力系統９における電力の周波数ｆがｆ０－Δｆ１未満になったと判断された場合、電力制御装置２の演算部２６は、自然エネルギー発電装置３に対し、目標電力指令Ｄ１により目標電力Ｐ３ｂ１を出力させる指示を行う。 At 12:00, when it is determined by the program shown in FIG. 4 that the frequency f of the electric power in the electric power system 9 becomes less than f0-Δf1, the arithmetic unit 26 of the electric power control device 2 sends the renewable energy power generation device 3 to the renewable energy power generation device 3. On the other hand, the target power command D1 gives an instruction to output the target power P3b1.
　目標電力Ｐ３ｂ１は、時間帯Ａの時間ａ６における出力電力Ｐ１ａ６より大きい電力である。電力制御装置２の演算部２６は、自然エネルギー発電装置３の出力電力を、出力電力Ｐ１ａ６から目標電力Ｐ３ｂ１に増加させる指示を行う。 The target power P3b1 is a power larger than the output power P1a6 at the time a6 in the time zone A. The calculation unit 26 of the power control device 2 gives an instruction to increase the output power of the renewable energy power generation device 3 from the output power P1a6 to the target power P3b1.
　自然エネルギー発電装置３は、時間帯Ｂの時間ｂ１における出力電力を、出力電力Ｐ１ａ６から目標電力Ｐ３ｂ１に増加させる。 The renewable energy power generation device 3 increases the output power in the time b1 of the time zone B from the output power P1a6 to the target power P3b1.
　電力系統９における電力の周波数ｆが、ｆ０－Δｆ１未満である場合、電力系統９における供給電力が需要電力に対し不足し、かつ火力、水力、原子力等の発電装置による安定的な周波数制御が、行われていないものと類推される。火力、水力、原子力等の発電装置から出力される電力は、迅速に増加されにくい。電力系統９における供給電力の不足を解消するため、一時的に時間帯Ｂの時間ｂ１において自然エネルギー発電装置３の出力電力を増加させる。 When the frequency f of the electric power in the electric power system 9 is less than f0-Δf1, the electric power supplied in the electric power system 9 is insufficient with respect to the demanded electric power, and stable frequency control by a power generation device such as thermal power, hydraulic power, or nuclear power is performed. It is presumed that it has not been done. The power output from power generation equipment such as thermal power, hydraulic power, and nuclear power is unlikely to increase rapidly. In order to solve the shortage of the supplied power in the power system 9, the output power of the renewable energy power generation device 3 is temporarily increased in the time b1 of the time zone B.
　時刻１２：０５に、電力制御装置２の演算部２６は、自然エネルギー発電装置３に対し、目標電力指令Ｄ１により目標電力Ｐ３ｂ２を出力させる指示を行う。 At 12:05 time, the calculation unit 26 of the power control device 2 instructs the renewable energy power generation device 3 to output the target power P3b2 by the target power command D1.
　目標電力Ｐ３ｂ２は、時間帯Ｂの時間ｂ１における出力電力Ｐ１ｂ１未満の電力である。電力制御装置２の演算部２６は、自然エネルギー発電装置３の出力電力を、出力電力Ｐ１ｂ１から目標電力Ｐ３ｂ２に減少させる指示を行う。 The target power P3b2 is a power less than the output power P1b1 in the time b1 of the time zone B. The calculation unit 26 of the power control device 2 gives an instruction to reduce the output power of the renewable energy power generation device 3 from the output power P1b1 to the target power P3b2.
　自然エネルギー発電装置３は、時間帯Ｂの時間ｂ２における出力電力を、出力電力Ｐ１ｂ１から目標電力Ｐ３ｂ２に減少させる。 The renewable energy power generation device 3 reduces the output power in the time b2 in the time zone B from the output power P1b1 to the target power P3b2.
　電力制御装置２の演算部２６は、自然エネルギー発電装置３に対し、時刻１２：１０に目標電力Ｐ３ｂ３を出力させる指示を、時刻１２：１５に目標電力Ｐ３ｂ４を出力させる指示を、時刻１２：２０に目標電力Ｐ３ｂ５を出力させる指示を、時刻１２：２５に目標電力Ｐ３ｂ６を出力させる指示を行う。 The calculation unit 26 of the power control device 2 gives an instruction to the renewable energy power generation device 3 to output the target power P3b3 at 12:10, an instruction to output the target power P3b4 at 12:15, and a time 12:20. Is instructed to output the target power P3b5, and is instructed to output the target power P3b6 at 12:25.
　自然エネルギー発電装置３は、時間帯Ｂにおける出力電力を、順次目標電力Ｐ３ｂ３、目標電力Ｐ３ｂ４、目標電力Ｐ３ｂ５、目標電力Ｐ３ｂ６とする動作を行う。 The renewable energy power generation device 3 sequentially sets the output power in the time zone B to the target power P3b3, the target power P3b4, the target power P3b5, and the target power P3b6.
　時間帯Ｂにおける目標電力の平均値である目標電力Ｐ３Ｂは、時間帯Ａにおいて自然エネルギー発電装置３から出力された出力電力の平均値未満である。目標電力Ｐ３Ｂは、時間帯Ｂにおける目標電力Ｐ３ｂ１、目標電力Ｐ３ｂ２、目標電力Ｐ３ｂ３、目標電力Ｐ３ｂ４、目標電力Ｐ３ｂ５、目標電力Ｐ３ｂ６の平均値である。 The target power P3B, which is the average value of the target power in the time zone B, is less than the average value of the output power output from the renewable energy power generation device 3 in the time zone A. The target power P3B is an average value of the target power P3b1, the target power P3b2, the target power P3b3, the target power P3b4, the target power P3b5, and the target power P3b6 in the time zone B.
　電力制御装置２は、自然エネルギー発電装置３に対し、目標電力指令Ｄ１に含まれる自然エネルギー出力電力抑制指示により、時間帯Ａにおける出力電力の平均値より、時間帯Ｂにおける平均電力を減少させる指示を行う。 The power control device 2 instructs the renewable energy power generation device 3 to reduce the average power in the time zone B from the average value of the output power in the time zone A by the instruction to suppress the renewable energy output power included in the target power command D1. I do.
　一方、電力系統９に接続された火力、水力、原子力等の発電装置は、時刻１２：００に、電力系統９における電力の周波数ｆが、ｆ０－Δｆ１未満となったことを検出し、自立制御により出力電力を増加させる。火力、水力、原子力等の発電装置は、出力電力を急峻に増加させにくい。火力、水力、原子力等の発電装置は、例えば３０分で目標となる電力に到達するように出力電力を増加させる。 On the other hand, the power generation devices such as thermal power, hydraulic power, and nuclear power connected to the power system 9 detect that the frequency f of the power in the power system 9 becomes less than f0-Δf1 at 12:00, and self-control. Increases the output power. It is difficult for power generation devices such as thermal power, hydraulic power, and nuclear power to sharply increase the output power. Power generation devices such as thermal power, hydraulic power, and nuclear power increase the output power so as to reach the target power in, for example, 30 minutes.
　自然エネルギー発電装置３の出力電力Ｐ１と、火力、水力、原子力等の発電装置の出力電力との関係を図１１に示す。時間帯Ｂにおいて、自然エネルギー発電装置３は出力電力を減少させ、火力、水力、原子力等の発電装置は出力電力を増加させる。 FIG. 11 shows the relationship between the output power P1 of the renewable energy power generation device 3 and the output power of the power generation devices such as thermal power, hydraulic power, and nuclear power. In the time zone B, the renewable energy power generation device 3 reduces the output power, and the power generation devices such as thermal power, hydraulic power, and nuclear power increase the output power.
　また、自然エネルギー発電装置３の出力電力Ｐ１は、電力系統９に接続された火力、水力、原子力等の発電装置から出力される電力の、増加速度に基づき算出された減少速度により減少させられる。時間帯Ｂにおける目標電力Ｐ３ｂ１～目標電力Ｐ３ｂ６は、系統情報Ｂ２に基づき上記の減少速度となるように算出される。 Further, the output power P1 of the renewable energy power generation device 3 is reduced by the decrease rate calculated based on the increase rate of the electric power output from the power generation devices such as thermal power, hydraulic power, and nuclear power connected to the power system 9. The target power P3b1 to the target power P3b6 in the time zone B are calculated so as to have the above-mentioned reduction rate based on the system information B2.
　自然エネルギー出力電力抑制指示は、電力系統９に接続された自然エネルギー発電装置３を除く発電装置から出力される電力の増加速度に基づき算出された減少速度を有する。 The renewable energy output power suppression instruction has a decrease rate calculated based on the increase rate of the electric power output from the power generation devices other than the natural energy power generation device 3 connected to the power system 9.
　自然エネルギー出力電力抑制指示は、自然エネルギー出力電力抑制指示の対象となる時間帯Ｂの一部の時間ｂ１において、直前の時間帯Ａにおける電力より、出力電力を増加させる指示を含むので、電力系統９における供給電力の不足を自然エネルギー発電装置３の出力電力により一次的に解消することができる。 Since the renewable energy output power suppression instruction includes an instruction to increase the output power from the power in the immediately preceding time zone A in a part of the time b1 of the time zone B subject to the renewable energy output power suppression instruction, the power system The shortage of the power supply in No. 9 can be temporarily solved by the output power of the renewable energy power generation device 3.
　自然エネルギー出力電力抑制指示は、電力需給調整における直前の時間帯Ａにおける出力電力より、平均電力を減少させる指示である。自然エネルギー出力電力抑制指示により、電力需給調整における時間帯Ｂにおける自然エネルギー発電装置３から出力される平均電力が減少されるので、電力系統９の供給電力における、自然エネルギー発電装置３の出力電力の比率を減少させ、火力、水力、原子力等の発電装置の出力電力の比率を増加させることができる。 The renewable energy output power suppression instruction is an instruction to reduce the average power from the output power in the time zone A immediately before in the power supply and demand adjustment. Since the average power output from the renewable energy power generation device 3 in the time zone B in the power supply and demand adjustment is reduced by the renewable energy output power suppression instruction, the output power of the renewable energy power generation device 3 in the power supply of the power system 9 is reduced. The ratio can be decreased and the ratio of the output power of power generation devices such as thermal power, hydraulic power, and nuclear power can be increased.
　これにより、火力、水力、原子力等の発電装置による安定的な周波数制御を確保することができ、自然エネルギー発電装置３を含む電力系統９を、安定的に制御することができる。 As a result, stable frequency control by power generation devices such as thermal power, hydraulic power, and nuclear power can be ensured, and the power system 9 including the renewable energy power generation device 3 can be stably controlled.
　また、自然エネルギー出力電力抑制指示は、電力系統９に接続された自然エネルギー発電装置３を除く、火力、水力、原子力等の発電装置から出力される電力の増加速度に基づき算出された減少速度を有する。これにより自然エネルギー発電装置３は、火力、水力、原子力等の発電装置から出力される電力の増加速度に対応した減少速度により出力電力を減少させることができる。 In addition, the renewable energy output power suppression instruction indicates the rate of decrease calculated based on the rate of increase in power output from power generation devices such as thermal power, hydraulic power, and nuclear power, excluding the natural energy power generation device 3 connected to the power system 9. Have. As a result, the renewable energy power generation device 3 can reduce the output power at a rate of decrease corresponding to the rate of increase of the power output from the power generation devices such as thermal power, hydraulic power, and nuclear power.
　これにより、電力系統９における供給電力の不足を軽減することができ、火力、水力、原子力等の発電装置による安定的な周波数制御を確保することができる。その結果、自然エネルギー発電装置３を含む電力系統９を、安定的に制御することができる。 As a result, the shortage of the supplied power in the power system 9 can be alleviated, and stable frequency control by power generation devices such as thermal power, hydraulic power, and nuclear power can be ensured. As a result, the electric power system 9 including the renewable energy power generation device 3 can be stably controlled.
（２）第２の変形例
　変形例を含む上記実施形態によれば、電力制御装置２は、電力系統９の電力が予め定められた第１の周波数範囲未満である場合、つまり、周波数ｆがｆ０－Δｆ１未満となった場合、自然エネルギー発電装置３に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行うものとした。 (2) Second Modified Example According to the above embodiment including the modified example, in the power control device 2, when the power of the power system 9 is less than the predetermined first frequency range, that is, the frequency f is When it becomes less than f0-Δf1, the renewable energy power generation device 3 is instructed to suppress the natural energy output power to reduce the output power.
　予め定められた時間内における電力系統９の周波数ｆの平均が、ｆ０－Δｆ１未満となった場合に、出力電力指令手段は、自然エネルギー発電装置３に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行うようにしてもよい。 When the average of the frequencies f of the power system 9 within a predetermined time is less than f0-Δf1, the output power command means causes the renewable energy power generation device 3 to reduce the output power of the renewable energy output power. Suppression instructions may be given.
　電力制御装置２の演算部２６は、図４に示すプログラムのステップＳ１０において、ステップＳ０３において受信した系統情報Ｂ１、系統情報Ｂ２に基づき、予め定められた時間内における電力系統９の周波数ｆの平均を算出する。 The calculation unit 26 of the power control device 2 averages the frequencies f of the power system 9 within a predetermined time based on the system information B1 and the system information B2 received in step S03 in step S10 of the program shown in FIG. Is calculated.
　電力制御装置２の演算部２６は、ステップＳ１０において、例えば図１０に示す１２：００を起点とし、数秒または数分間隔で測定された電力系統９の平均周波数を算出する。または、電力制御装置２の演算部２６は、図１０に示す１２：００、１２：０５、１２：１０、１２：１５における電力系統９の平均周波数を算出する。 In step S10, the calculation unit 26 of the power control device 2 calculates the average frequency of the power system 9 measured at intervals of several seconds or minutes, starting from 12:00 shown in FIG. 10, for example. Alternatively, the calculation unit 26 of the power control device 2 calculates the average frequency of the power system 9 at 12:00, 12:05, 12:10, and 12:15 shown in FIG.
　平均周波数は、数秒～数分の任意の時間内における周波数ｆに基づき算出されたものであってもよい。また、平均周波数は、複数の時間帯にわたる任意の時間内における電力系統９の周波数ｆに基づき算出されたものであってもよい。 The average frequency may be calculated based on the frequency f within an arbitrary time of several seconds to several minutes. Further, the average frequency may be calculated based on the frequency f of the power system 9 within an arbitrary time over a plurality of time zones.
　これにより、電力系統９の周波数ｆの瞬時的な変動に基づき、電力制御装置２が自然エネルギー発電装置３に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行うことを防止することができる。電力系統９の周波数ｆの瞬時的な変動に基づき、電力制御装置２が自然エネルギー発電装置３に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行うことは、安定的な電力系統９の周波数制御を阻害する可能性がある。 As a result, it is possible to prevent the power control device 2 from instructing the renewable energy power generation device 3 to suppress the natural energy output power to reduce the output power based on the instantaneous fluctuation of the frequency f of the power system 9. .. Based on the instantaneous fluctuation of the frequency f of the power system 9, the power control device 2 gives the renewable energy power generation device 3 an instruction to suppress the natural energy output power to reduce the output power, which is a stable power system 9. It may interfere with frequency control.
　電力制御装置２は、系統情報検出手段により検出された系統情報に基づき、予め定められた時間内における電力系統９の平均周波数が、予め定められた第１の周波数ｆ０－Δｆ１未満であると判断した場合、出力電力指令手段により、自然エネルギー発電装置３に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行うので、自然エネルギー発電装置３を含む電力系統９を、より安定的に制御することができる電力制御システム１を提供することができる。 The power control device 2 determines that the average frequency of the power system 9 within a predetermined time is less than the predetermined first frequency f0-Δf1 based on the system information detected by the system information detecting means. In this case, the output power command means gives an instruction to suppress the output power to the renewable energy power generation device 3, so that the power system 9 including the renewable energy power generation device 3 is controlled more stably. It is possible to provide a power control system 1 capable of providing a power control system 1.
　また、予め定められた時間内における電力系統９の周波数ｆが、継続してｆ０－Δｆ１未満となった場合に、出力電力指令手段は、自然エネルギー発電装置３に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行うようにしてもよい。 Further, when the frequency f of the power system 9 continuously becomes less than f0-Δf1 within a predetermined time, the output power command means naturally reduces the output power to the renewable energy power generation device 3. The energy output power suppression instruction may be given.
　電力制御装置２の演算部２６は、図４に示すプログラムのステップＳ１０において、ステップＳ０３において受信した系統情報Ｂ１、系統情報Ｂ２に基づき、予め定められた時間内における電力系統９の周波数ｆを継続して観測する。 In step S10 of the program shown in FIG. 4, the arithmetic unit 26 of the power control device 2 continues the frequency f of the power system 9 within a predetermined time based on the system information B1 and the system information B2 received in step S03. And observe.
　電力制御装置２の演算部２６は、ステップＳ１０において、例えば図１０に示す１２：００を起点とし、数秒または数分間隔で電力系統９の周波数ｆを継続して観測する。または、電力制御装置２の演算部２６は、図１０に示す１２：００、１２：０５、１２：１０、１２：１５における電力系統９の周波数ｆを継続して観測する。 In step S10, the calculation unit 26 of the power control device 2 continuously observes the frequency f of the power system 9 at intervals of several seconds or minutes, starting from 12:00 shown in FIG. 10, for example. Alternatively, the arithmetic unit 26 of the power control device 2 continuously observes the frequency f of the power system 9 at 12:00, 12:05, 12:10, and 12:15 shown in FIG.
　周波数ｆは、数秒～数分の任意の時間間隔により継続して観測されてもよい。また、周波数ｆは、複数の時間帯にわたり継続して観測されてもよい。 The frequency f may be continuously observed at an arbitrary time interval of several seconds to several minutes. Further, the frequency f may be continuously observed over a plurality of time zones.
　これにより、電力系統９の周波数ｆの瞬時的な変動に基づき、電力制御装置２が自然エネルギー発電装置３に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行うことを防止することができる。電力系統９の周波数ｆの瞬時的な変動に基づき、電力制御装置２が自然エネルギー発電装置３に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行うことは、安定的な電力系統９の周波数制御を阻害する可能性がある。 As a result, it is possible to prevent the power control device 2 from instructing the renewable energy power generation device 3 to suppress the natural energy output power to reduce the output power based on the instantaneous fluctuation of the frequency f of the power system 9. .. Based on the instantaneous fluctuation of the frequency f of the power system 9, the power control device 2 gives the renewable energy power generation device 3 an instruction to suppress the natural energy output power to reduce the output power, which is a stable power system 9. It may interfere with frequency control.
　電力制御装置２は、系統情報検出手段により検出された系統情報に基づき、予め定められた時間内における電力系統９の周波数が、継続して予め定められた第１の周波数ｆ０－Δｆ１未満であると判断した場合、出力電力指令手段により、自然エネルギー発電装置３に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行うので、自然エネルギー発電装置３を含む電力系統９を、安定的に制御することができる電力制御システム１を提供することができる。 In the power control device 2, the frequency of the power system 9 within a predetermined time is continuously lower than the predetermined first frequency f0-Δf1 based on the system information detected by the system information detecting means. If it is determined that, the output power command means issues an instruction to suppress the output power to the renewable energy power generation device 3, so that the power system 9 including the renewable energy power generation device 3 can be stably controlled. It is possible to provide a power control system 1 that can be used.
　また、予め定められた時間内における電力系統９の周波数ｆの平均が、ｆ０－Δｆ１ａ未満となった場合、または予め定められた時間内における電力系統９の周波数ｆが、継続してｆ０－Δｆ１ｂ未満となった場合に、電力制御装置２は、自然エネルギー発電装置３に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行うようにしてもよい。 Further, when the average of the frequencies f of the power system 9 within the predetermined time becomes less than f0-Δf1a, or the frequency f of the power system 9 within the predetermined time continues to be f0-Δf1b. When it becomes less than, the power control device 2 may give the renewable energy power generation device 3 an instruction to suppress the natural energy output power to reduce the output power.
　例えば、ｆ０－Δｆ１ａ＝４９．２Ｈｚ、ｆ０－Δｆ１ｂ＝４９．１Ｈｚとする。予め定められた時間内、例えば５分間における電力系統９の周波数ｆの平均が、４９．２Ｈｚ未満となった場合、または予め定められた時間内、例えば５秒間における電力系統９の周波数ｆが、継続して４９．１Ｈｚ未満となった場合に、電力制御装置２は、自然エネルギー発電装置３に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行うようにしてもよい。 For example, f0-Δf1a = 49.2 Hz, f0-Δf1b = 49.1 Hz. When the average frequency f of the power system 9 within a predetermined time, for example 5 minutes, is less than 49.2 Hz, or within a predetermined time, for example 5 seconds, the frequency f of the power system 9 is. When the power is continuously lower than 49.1 Hz, the power control device 2 may give the renewable energy power generation device 3 an instruction to suppress the natural energy output power to reduce the output power.
（３）第３の変形例
　変形例を含む上記実施形態に加え、電力制御装置２は、電力系統９に接続された自然エネルギー発電装置３を除く発電装置から出力された電力と、自然エネルギー発電装置３を除く発電装置から出力することができる電力の下限値との差分が、予め定められた値以下となった場合に、予め定められた第１の周波数範囲の下限値ｆ０－Δｆ１を、第１の周波数範囲の下限値ｆ０－Δｆ１より大きい値であるｆ０－Δｆ１ｍに変更し、電力系統９の電力が変更された第１の周波数範囲未満である場合、つまり、周波数ｆが変更されたｆ０－Δｆ１ｍ未満となった場合、出力電力指令手段により、自然エネルギー発電装置３に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行うようにしてもよい。電力系統９に接続された自然エネルギー発電装置を除く発電装置は、例えば、火力、水力、原子力等の発電装置である。 (3) Third Modified Example In addition to the above embodiment including the modified example, the power control device 2 includes power output from a power generation device other than the renewable energy power generation device 3 connected to the power system 9, and renewable energy power generation. When the difference from the lower limit of the power that can be output from the power generation devices other than the device 3 is equal to or less than the predetermined value, the lower limit value f0-Δf1 of the predetermined first frequency range is set. When the value is changed to f0-Δf1m, which is larger than the lower limit value f0-Δf1 of the first frequency range, and the power of the power system 9 is less than the changed first frequency range, that is, the frequency f is changed. When it becomes less than f0-Δf1m, the output power command means may be used to instruct the renewable energy power generation device 3 to suppress the output power to reduce the output power. The power generation device other than the renewable energy power generation device connected to the power system 9 is, for example, a power generation device for thermal power, hydraulic power, nuclear power, or the like.
　電力系統９に接続された火力、水力、原子力等の発電装置は、構造上、一定の最低負荷電力以上にて運転されることが必要とされる。本実施形態では、火力、水力、原子力等の発電装置から出力することができる最小の電力を、最低負荷電力と呼ぶ。火力、水力、原子力等の発電装置から出力される電力の大きさは、電力系統９の需要電力から自然エネルギー発電装置３から出力される電力を減算したものとなる。 The thermal power, hydraulic power, nuclear power, and other power generation devices connected to the power system 9 are structurally required to be operated at a certain minimum load power or higher. In the present embodiment, the minimum electric power that can be output from a power generation device such as thermal power, hydraulic power, or nuclear power is referred to as a minimum load power. The magnitude of the electric power output from the power generation devices such as thermal power, hydraulic power, and nuclear power is obtained by subtracting the power output from the renewable energy power generation device 3 from the required power of the power system 9.
　電力系統９に接続された負荷が少なくなった場合、火力、水力、原子力等の発電装置は、最低負荷電力以下で運転することを要求される可能性がある。しかしながら、火力、水力、原子力等の発電装置を最低負荷電力以下で運転することは、電力系統９における周波数制御を不安定にするとともに、発電装置によっては構造上困難である。 When the load connected to the power system 9 is reduced, power generation devices such as thermal power, hydraulic power, and nuclear power may be required to operate at the minimum load power or less. However, operating a power generation device such as thermal power, hydraulic power, or nuclear power with a minimum load power or less destabilizes frequency control in the power system 9, and is structurally difficult depending on the power generation device.
　したがって、電力系統９に接続された負荷が少なくなり、火力、水力、原子力等の発電装置に、最低負荷電力以下で運転することが要求されることが予測される場合、事前に自然エネルギー発電装置３から出力される電力を減少させ、火力、水力、原子力等の発電装置から出力される電力を増加させることが好ましい。 Therefore, when the load connected to the power system 9 is reduced and it is predicted that power generation devices such as thermal power, hydraulic power, and nuclear power will be required to operate at the minimum load power or less, the renewable energy power generation device is expected to operate in advance. It is preferable to reduce the power output from 3 and increase the power output from power generation devices such as thermal power, hydraulic power, and nuclear power.
　火力、水力、原子力等の発電装置から出力される電力を増加させることを目的として、電力制御装置２は、火力、水力、原子力等の発電装置から出力された電力と、火力、水力、原子力等の発電装置の最低負荷電力との差分が、予め定められた値以下となった場合に、第１の周波数範囲の下限値ｆ０－Δｆ１を、第１の周波数範囲の下限値ｆ０－Δｆ１より大きい値ｆ０－Δｆ１ｍに変更する。電力系統９の周波数ｆが変更されたｆ０－Δｆ１ｍ未満となった場合、電力制御装置２は、自然エネルギー発電装置３に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行う。 For the purpose of increasing the power output from power generation devices such as thermal power, hydraulic power, and nuclear power, the power control device 2 includes power output from power generation devices such as thermal power, hydraulic power, and nuclear power, and thermal power, hydraulic power, nuclear power, and the like. When the difference from the minimum load power of the power generation device is equal to or less than a predetermined value, the lower limit value f0-Δf1 of the first frequency range is larger than the lower limit value f0-Δf1 of the first frequency range. Change to the value f0-Δf1m. When the frequency f of the power system 9 becomes less than the changed f0-Δf1m, the power control device 2 instructs the renewable energy power generation device 3 to suppress the natural energy output power to reduce the output power.
　センタ装置８は、給電指令所、系統制御所、集中制御所などの指令室等に設置される。センタ装置８は、電力系統９の電力の情報である系統情報Ｂ２を電力制御装置２に送信する。系統情報Ｂ２には、火力、水力、原子力等の発電装置の出力電力、最低負荷電力に関する情報も含まれる。 The center device 8 is installed in a command room such as a power supply command center, a system control center, or a centralized control center. The center device 8 transmits the system information B2, which is the power information of the power system 9, to the power control device 2. The system information B2 also includes information on the output power and the minimum load power of power generation devices such as thermal power, hydraulic power, and nuclear power.
　電力制御装置２は、系統情報Ｂ２を受信し、火力、水力、原子力等の発電装置から出力されている電力と、火力、水力、原子力等の発電装置の最低負荷電力との差分を算出する。本実施形態では、算出された差分を余力電力と呼ぶ。電力制御装置２は、算出された余力電力が、予め定められた値以下となった場合に、第１の周波数範囲の下限値ｆ０－Δｆ１を、第１の周波数範囲の下限値ｆ０－Δｆ１より大きい値ｆ０－Δｆ１ｍに変更する。 The power control device 2 receives the system information B2 and calculates the difference between the power output from the power generation device such as thermal power, hydraulic power, and nuclear power and the minimum load power of the power generation device such as thermal power, hydraulic power, and nuclear power. In the present embodiment, the calculated difference is referred to as residual power. When the calculated remaining power becomes equal to or less than a predetermined value, the power control device 2 sets the lower limit value f0-Δf1 of the first frequency range to the lower limit value f0-Δf1 of the first frequency range. Change to a large value f0-Δf1m.
　電力制御装置２は、例えば、第１の周波数範囲の下限値がｆ０－Δｆ１＝４９．０Ｈｚであった場合、算出された余力電力が、予め定められた値以下となったときに第１の周波数範囲の下限値をｆ０－Δｆ１ｍ＝４９．５Ｈｚに変更する。電力制御装置２は、電力系統９の周波数ｆが変更されたｆ０－Δｆ１ｍ未満となった場合、自然エネルギー発電装置３に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行う。 The power control device 2 is, for example, when the lower limit value of the first frequency range is f0-Δf1 = 49.0 Hz, and the calculated remaining power becomes equal to or less than a predetermined value, the first power control device 2 is used. The lower limit of the frequency range is changed to f0-Δf1m = 49.5 Hz. When the frequency f of the power system 9 becomes less than the changed f0-Δf1m, the power control device 2 instructs the renewable energy power generation device 3 to suppress the output power to reduce the output power.
　上記では、余力電力の算出は電力制御装置２にて行われるものとしたが、センタ装置８により行われるようにしてもよい。 In the above, the calculation of the remaining power is performed by the power control device 2, but it may be performed by the center device 8.
　上記によれば、電力制御装置２は、火力、水力、原子力等の発電装置の余力電力が、予め定められた値以下となった場合に、第１の周波数範囲の下限値ｆ０－Δｆ１を、第１の周波数範囲の下限値ｆ０－Δｆ１より大きい値ｆ０－Δｆ１ｍに変更する。電力制御装置２は、火力、水力、原子力等の発電装置の余力電力が少なくなった場合、電力系統９の周波数ｆが変更されたｆ０－Δｆ１ｍ未満となったときに、自然エネルギー発電装置３に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行うので、自然エネルギー発電装置３の出力電力の比率を減少させ、火力、水力、原子力等の発電装置の出力電力の比率を増加させることができる。 According to the above, the power control device 2 sets the lower limit value f0-Δf1 of the first frequency range when the surplus power of the power generation device such as thermal power, hydraulic power, nuclear power, etc. becomes equal to or less than a predetermined value. The value is changed to f0-Δf1m, which is larger than the lower limit value f0-Δf1 of the first frequency range. The power control device 2 can be used as a renewable energy power generation device 3 when the remaining power of the power generation device such as thermal power, hydraulic power, nuclear power, etc. becomes low and the frequency f of the power system 9 becomes less than f0-Δf1m in which the frequency f is changed. On the other hand, since a natural energy output power suppression instruction is given to reduce the output power, it is possible to reduce the ratio of the output power of the natural energy power generation device 3 and increase the ratio of the output power of the power generation devices such as thermal power, hydraulic power, and nuclear power. it can.
　これにより、火力、水力、原子力等の発電装置による安定的な周波数制御を確保することができ、自然エネルギー発電装置３を含む電力系統９を、より安定的に制御することができる。 As a result, stable frequency control by power generation devices such as thermal power, hydraulic power, and nuclear power can be ensured, and the power system 9 including the renewable energy power generation device 3 can be controlled more stably.
　出力制御指令を受信した後、火力、水力、原子力等の発電装置が応答するまでに、時間遅れが生ずる。上記によれば、電力系統９の周波数ｆが、第１の周波数範囲の下限値ｆ０－Δｆ１に到達する前の、変更されたｆ０－Δｆ１ｍ未満となったときに、自然エネルギー発電装置３の出力電力Ｐ１を減少させる。 After receiving the output control command, there will be a time delay before the power generation equipment such as thermal power, hydraulic power, and nuclear power responds. According to the above, when the frequency f of the power system 9 becomes less than the changed f0-Δf1m before reaching the lower limit value f0-Δf1 of the first frequency range, the output of the renewable energy power generation device 3 Reduce the power P1.
　これにより自然エネルギー発電装置３の出力電力Ｐ１の、電力系統９における比率が低減され、火力、水力、原子力等の発電装置による安定的な周波数制御が確保される。 As a result, the ratio of the output power P1 of the renewable energy power generation device 3 in the power system 9 is reduced, and stable frequency control by power generation devices such as thermal power, hydraulic power, and nuclear power is ensured.
［２．他の実施形態］
　変形例を含めた実施形態を説明したが、これらの実施形態は例として提示したものであって、発明の範囲を限定することを意図していない。これら実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略や置き換え、変更を行うことができる。これらの実施形態やその変形は、発明の範囲や要旨に含まれると同様に、特許請求の範囲に記載された発明とその均等の範囲に含まれるものである。以下は、その一例である。 [2. Other embodiments]
Although embodiments including modifications have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, as well as in the scope of the invention described in the claims and the equivalent scope thereof. The following is an example.
（１）上記実施形態では、ステップＳ０１において測定対象選択モジュールＭ３により選択された自然エネルギー発電装置３により、出力することが可能な最大電力Ｐ２の測定が行われるようにした。しかしながら、全数の自然エネルギー発電装置３により、出力することが可能な最大電力Ｐ２の測定が行われるようにしてもよい。 (1) In the above embodiment, the maximum power P2 that can be output is measured by the renewable energy power generation device 3 selected by the measurement target selection module M3 in step S01. However, the maximum power P2 that can be output may be measured by all the renewable energy power generation devices 3.
（２）上記実施形態では、ステップＳ０１において測定対象選択モジュールＭ３により、最大電力Ｐ２の測定対象となる自然エネルギー発電装置３が選択されるものとした。しかしながら、作業者により選択された最大電力Ｐ２の測定対象となる自然エネルギー発電装置３が、予め測定対象選択情報Ｅ１として記憶部２５に設定記憶されるようにしてもよい。 (2) In the above embodiment, it is assumed that the natural energy power generation device 3 to be measured of the maximum power P2 is selected by the measurement target selection module M3 in step S01. However, the renewable energy power generation device 3 to be measured for the maximum power P2 selected by the operator may be set and stored in the storage unit 25 in advance as the measurement target selection information E1.
（３）上記実施形態では、ステップＳ０４において目標電力Ｐ３の指令対象となる自然エネルギー発電装置３は、最大電力Ｐ２の測定対象となる自然エネルギー発電装置３と重複して選択されてもよいものとした。つまり、最大電力Ｐ２の測定対象となる自然エネルギー発電装置３は、目標電力指令Ｄ１により目標電力Ｐ３出力する指令を受信した場合、出力電力Ｐ１として出力している最大電力Ｐ２を目標電力Ｐ３に変更して出力することが必要とされた。しかしながら、ステップＳ０４において指令対象選択モジュールＭ４により、目標電力Ｐ３の指令対象として選択される自然エネルギー発電装置３は、最大電力Ｐ２の検出対象となる自然エネルギー発電装置３を除くものであってもよい。 (3) In the above embodiment, the renewable energy power generation device 3 to be commanded by the target power P3 in step S04 may be selected in duplicate with the renewable energy power generation device 3 to be measured by the maximum power P2. did. That is, when the renewable energy power generation device 3 to be measured of the maximum power P2 receives a command to output the target power P3 according to the target power command D1, the maximum power P2 output as the output power P1 is changed to the target power P3. Was required to output. However, the renewable energy power generation device 3 selected as the command target of the target power P3 by the command target selection module M4 in step S04 may exclude the renewable energy power generation device 3 that is the detection target of the maximum power P2. ..
　例えば、ステップＳ０１において測定対象選択モジュールＭ３により自然エネルギー発電装置３ａ、３ｄが最大電力Ｐ２の測定対象として選択された場合、自然エネルギー発電装置３ａ、３ｄを除く自然エネルギー発電装置３ｂ、３ｃ、３ｅ、３ｆの中から、目標電力Ｐ３の指令対象となる自然エネルギー発電装置３が選択されるようにしてもよい。最大電力Ｐ２の測定対象となる自然エネルギー発電装置３ａ、３ｄは常時最大電力Ｐ２にかかる出力電力Ｐ１を出力するものとする。 For example, when the renewable energy power generation devices 3a and 3d are selected as the measurement targets of the maximum power P2 by the measurement target selection module M3 in step S01, the natural energy power generation devices 3b, 3c and 3e excluding the natural energy power generation devices 3a and 3d, From 3f, the renewable energy power generation device 3 to be commanded by the target power P3 may be selected. It is assumed that the renewable energy power generation devices 3a and 3d, which are the measurement targets of the maximum power P2, always output the output power P1 applied to the maximum power P2.
　このように構成することで、電力制御装置２の出力電力指令手段は、複数の自然エネルギー発電装置３ａ～３ｆのうち、最大電力Ｐ２の検出対象を除く一部の自然エネルギー発電装置３に対し、目標電力Ｐ３にかかる出力電力Ｐ１を出力するように指示するので、最大電力Ｐ２の検出対象となる自然エネルギー発電装置３ａ、３ｄは常時最大電力Ｐ２にかかる出力電力Ｐ１を出力することができる。最大電力Ｐ２の検出対象となる自然エネルギー発電装置３ａ、３ｄは常時最大電力Ｐ２にかかる出力電力Ｐ１を出力するので、容易に最大電力Ｐ２の測定を行うことができる。 With this configuration, the output power command means of the power control device 2 refers to some of the renewable energy power generation devices 3a to 3f among the plurality of renewable energy power generation devices 3a to 3f, excluding the detection target of the maximum power P2. Since the instruction is instructed to output the output power P1 applied to the target power P3, the renewable energy power generation devices 3a and 3d to be detected by the maximum power P2 can always output the output power P1 applied to the maximum power P2. Since the renewable energy power generation devices 3a and 3d, which are the targets of detection of the maximum power P2, always output the output power P1 applied to the maximum power P2, the maximum power P2 can be easily measured.
（４）上記実施形態では、自然エネルギー発電装置３が、最大電力測定モジュールＮ１を内蔵し、出力することが可能な最大電力Ｐ２を測定し、最大電力Ｐ２の情報である最大電力情報Ａ２が、自然エネルギー発電装置３から電力制御装置２に送信されるようにした。しかしながら、電力制御装置２の演算部２６が、最大電力測定モジュールＮ１を内蔵し、自然エネルギー発電装置３に対し、出力電力を増減するコマンドを送信することにより自然エネルギー発電装置３の出力電圧を逐次変化させ、電力制御装置２の演算部２６により、自然エネルギー発電装置３の最大電力Ｐ２が測定されるようにしてもよい。 (4) In the above embodiment, the renewable energy power generation device 3 incorporates the maximum power measurement module N1 and measures the maximum power P2 that can be output, and the maximum power information A2 that is the information of the maximum power P2 is It is made to be transmitted from the renewable energy power generation device 3 to the power control device 2. However, the arithmetic unit 26 of the power control device 2 incorporates the maximum power measurement module N1 and sequentially transmits the output voltage of the renewable energy power generation device 3 by transmitting a command to increase or decrease the output power to the renewable energy power generation device 3. It may be changed so that the calculation unit 26 of the power control device 2 measures the maximum power P2 of the renewable energy power generation device 3.
（５）上記実施形態では、ステップＳ０５において周波数ｆが予め定められた周波数Δｆ２の範囲内にあると判断された場合、電力制御装置２は、自然エネルギー発電装置３に対し、目標電力指令Ｄ１により出力電力Ｐ１を最大電力Ｐ２とする指示を行うものとした。しかしながら、ステップＳ０５、ステップＳ０６を有さず、周波数ｆが予め定められた周波数Δｆ２の範囲内にあるかにかかわらず、電力制御装置２は、自然エネルギー発電装置３に対し、目標電力指令Ｄ１により出力電力Ｐ１を最大電力Ｐ２とする指示を送信するようにしてもよい。 (5) In the above embodiment, when it is determined in step S05 that the frequency f is within the range of the predetermined frequency Δf2, the power control device 2 issues the target power command D1 to the renewable energy power generation device 3. It is assumed that the output power P1 is instructed to be the maximum power P2. However, regardless of whether the frequency f is within the predetermined frequency Δf2 without having step S05 and step S06, the power control device 2 sends the renewable energy power generation device 3 to the target power command D1. An instruction to set the output power P1 to the maximum power P2 may be transmitted.
（６）上記実施形態では、ステップＳ０１において測定対象選択モジュールＭ３により選択された自然エネルギー発電装置３ａ、３ｄに接続された電力測定装置４ａ、４ｄから、系統情報Ｂ１を受信するものとしたが、自然エネルギー発電装置３ａ～３ｆのそれぞれに配置された電力測定装置４ａ～４ｆから、または電力測定装置４ａ～４ｆのうち任意に選択された電力測定装置４から、系統情報Ｂ１が電力制御装置２に送信されるようにしてもよい。 (6) In the above embodiment, the system information B1 is received from the power measuring devices 4a and 4d connected to the renewable energy power generation devices 3a and 3d selected by the measurement target selection module M3 in step S01. The system information B1 is transferred to the power control device 2 from the power measurement devices 4a to 4f arranged in each of the renewable energy power generation devices 3a to 3f, or from the power measurement device 4 arbitrarily selected from the power measurement devices 4a to 4f. It may be sent.
（７）上記実施形態では、自然エネルギー発電装置３ａ～３ｆのそれぞれに電力測定装置４ａ～４ｆが電気的に接続され配置されるものとしたが、電力測定装置４は、複数の自然エネルギー発電装置３のうちの一部に電気的に接続され配置されていてもよい。例えば図１２に示すように、複数の自然エネルギー発電装置３ａ～３ｆのうち、予め選択された自然エネルギー発電装置３ａ、３ｄにのみ、それぞれ電力測定装置４ａ、４ｄが配置されるようにしてもよい。このように構成することにより、電力制御システム１における電力測定装置４の台数を減らすことができる。 (7) In the above embodiment, the power measuring devices 4a to 4f are electrically connected and arranged in each of the renewable energy power generation devices 3a to 3f, but the power measuring device 4 is a plurality of renewable energy power generation devices. It may be electrically connected and arranged in a part of 3. For example, as shown in FIG. 12, the power measuring devices 4a and 4d may be arranged only in the renewable energy power generation devices 3a and 3d selected in advance from the plurality of natural energy power generation devices 3a to 3f, respectively. .. With this configuration, the number of power measuring devices 4 in the power control system 1 can be reduced.
（８）上記実施形態では、一つの電力制御装置２に複数の自然エネルギー発電装置３ａ～３ｆが通信線５ｂを介し接続されるようにした。しかしながら、一つの電力制御装置２に対し一つの自然エネルギー発電装置３が接続されるようにしてもよい。 (8) In the above embodiment, a plurality of renewable energy power generation devices 3a to 3f are connected to one power control device 2 via a communication line 5b. However, one renewable energy power generation device 3 may be connected to one power control device 2.
（９）上記実施形態では、電力制御装置２は、自然エネルギー発電装置３と別の装置として設けられるものとした。しかしながら電力制御装置２は、自然エネルギー発電装置３と一体に構成されるものであってもよい。 (9) In the above embodiment, the power control device 2 is provided as a device separate from the renewable energy power generation device 3. However, the power control device 2 may be integrally configured with the renewable energy power generation device 3.
１・・・電力制御システム
２・・・電力制御装置
２１，２２，２３・・・通信部
２４・・・出力部
２５・・・記憶部
２６・・・演算部
３，３ａ，３ｂ，３ｃ，３ｄ，３ｅ，３ｆ・・・自然エネルギー発電装置
３１・・・発電部
３２・・・電力変換部
３３・・・制御部
４，４ａ，４ｂ，４ｃ，４ｄ，４ｅ，４ｆ・・・電力測定装置
５ａ，５ｂ，５ｃ・・・通信線
７・・・ケーブル
８・・・センタ装置
９・・・電力系統

  1 ... Power control system 2 ... Power control device 21, 22, 23 ... Communication unit 24 ... Output unit 25 ... Storage unit 26 ... Calculation unit 3, 3a, 3b, 3c, 3d, 3e, 3f ... Renewable energy power generation device 31 ... Power generation unit 32 ... Power conversion unit 33 ... Control unit 4, 4a, 4b, 4c, 4d, 4e, 4f ... Power measurement device 5a, 5b, 5c ... Communication line 7 ... Cable 8 ... Center device 9 ... Power system

Claims (10)

  1. 　自然エネルギーにより発電を行い電力系統に電力を供給する自然エネルギー発電装置と、
    　前記自然エネルギー発電装置から出力される最大電力を検出する最大電力検出手段と、
    　前記電力系統の電力に関する系統情報を検出する系統情報検出手段と、
    　前記最大電力検出手段により検出された前記最大電力、および前記系統情報検出手段により検出された前記系統情報に基づき、前記自然エネルギー発電装置に、出力させる前記最大電力以下である出力電力を算出し指示する出力電力指令手段と、
    　を備えた電力制御装置と、
    　　を有し、
    　前記系統情報検出手段により検出された前記系統情報に基づき、前記電力系統の電力が予め定められた第１の周波数範囲未満であると判断した場合、
    　前記出力電力指令手段は、前記自然エネルギー発電装置に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行う、
    　　電力制御システム。     A renewable energy power generator that generates electricity from natural energy and supplies power to the power system,
    The maximum power detecting means for detecting the maximum power output from the renewable energy power generation device, and
    A system information detecting means for detecting system information related to the power of the power system, and
    Based on the maximum power detected by the maximum power detecting means and the system information detected by the system information detecting means, an output power equal to or less than the maximum power to be output to the renewable energy power generation device is calculated and instructed. Output power command means to
    Power control device equipped with
    Have,
    When it is determined that the power of the power system is less than the predetermined first frequency range based on the system information detected by the system information detecting means.
    The output power command means gives an instruction to the renewable energy power generation device to suppress the output power to reduce the output power.
    Power control system.
  2. 　前記自然エネルギー出力電力抑制指示は、電力需給調整における直前の時間帯における出力電力の平均より、直後の時間帯における前記出力電力の平均を減少させる指示である、
    　　請求項１に記載の電力制御システム。     The renewable energy output power suppression instruction is an instruction to reduce the average of the output power in the time zone immediately after from the average of the output power in the time zone immediately before in the power supply and demand adjustment.
    The power control system according to claim 1.
  3. 　前記自然エネルギー出力電力抑制指示は、
    前記自然エネルギー出力電力抑制指示の対象となる時間帯の、前記電力系統の電力が予め定められた前記第１の周波数範囲未満であると判断された直後の時間において、
    直前の時間帯における電力より、前記出力電力を増加させる指示を含む、
    　　請求項２に記載の電力制御システム。     The natural energy output power suppression instruction is
    In the time zone subject to the renewable energy output power suppression instruction, immediately after it is determined that the power of the power system is less than the predetermined first frequency range.
    Includes an instruction to increase the output power from the power in the immediately preceding time zone.
    The power control system according to claim 2.
  4. 　前記自然エネルギー出力電力抑制指示は、
    電力系統に接続された前記自然エネルギー発電装置を除く発電装置から出力される電力の増加速度に基づき算出された減少速度により前記出力電力を減少させる指示である、
    　　請求項２に記載の電力制御システム。     The natural energy output power suppression instruction is
    It is an instruction to reduce the output power by a decrease rate calculated based on an increase rate of electric power output from a power generation device other than the renewable energy power generation device connected to the power system.
    The power control system according to claim 2.
  5. 　前記系統情報検出手段により検出された前記系統情報に基づき、予め定められた時間内における前記電力系統の平均周波数が、予め定められた第１の周波数範囲未満であると判断した場合、
    　前記出力電力指令手段は、前記自然エネルギー発電装置に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行う、
    　　請求項１に記載の電力制御システム。     When it is determined that the average frequency of the power system within a predetermined time is less than the predetermined first frequency range based on the system information detected by the system information detecting means.
    The output power command means gives an instruction to the renewable energy power generation device to suppress the output power to reduce the output power.
    The power control system according to claim 1.
  6. 　前記系統情報検出手段により検出された前記系統情報に基づき、予め定められた時間内における前記電力系統の周波数が、継続して予め定められた第１の周波数範囲未満であると判断した場合、
    　前記出力電力指令手段は、前記自然エネルギー発電装置に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行う、
    　　請求項１に記載の電力制御システム。     When it is determined that the frequency of the power system within a predetermined time is continuously less than the predetermined first frequency range based on the system information detected by the system information detecting means.
    The output power command means gives an instruction to the renewable energy power generation device to suppress the output power to reduce the output power.
    The power control system according to claim 1.
  7. 　電力系統に接続された前記自然エネルギー発電装置を除く発電装置から出力された電力と、前記自然エネルギー発電装置を除く発電装置から出力することができる電力の下限値との差分が、予め定められた値以下となった場合に、予め定められた前記第１の周波数範囲の下限値を、前記第１の周波数範囲の下限値より大きい値に変更し、
    　前記電力系統の電力が変更された前記第１の周波数範囲未満であると判断した場合、
    　前記出力電力指令手段は、前記自然エネルギー発電装置に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行う、
    　　請求項１に記載の電力制御システム。     The difference between the power output from the power generation device other than the renewable energy power generation device connected to the power system and the lower limit value of the power that can be output from the power generation device other than the renewable energy power generation device is predetermined. When it becomes less than or equal to the value, the predetermined lower limit value of the first frequency range is changed to a value larger than the lower limit value of the first frequency range.
    When it is determined that the power of the power system is less than the changed first frequency range,
    The output power command means gives an instruction to the renewable energy power generation device to suppress the output power to reduce the output power.
    The power control system according to claim 1.
  8. 　自然エネルギーにより発電を行い電力系統に電力を供給する自然エネルギー発電装置から出力される最大電力を検出する最大電力検出手段と、
    　前記電力系統の電力に関する系統情報を検出する系統情報検出手段と、
    　前記最大電力検出手段により検出された前記最大電力、および前記系統情報検出手段により検出された前記系統情報に基づき、前記自然エネルギー発電装置に、出力させる前記最大電力以下である出力電力を算出し指示する出力電力指令手段と、を有し、
    　前記系統情報検出手段により検出された前記系統情報に基づき、前記電力系統の電力が予め定められた第１の周波数範囲未満であると判断した場合、
    　前記出力電力指令手段は、前記自然エネルギー発電装置に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行う、
    　　電力制御装置。     A maximum power detection means that detects the maximum power output from a natural energy power generation device that generates power using natural energy and supplies power to the power system.
    A system information detecting means for detecting system information related to the power of the power system, and
    Based on the maximum power detected by the maximum power detecting means and the system information detected by the system information detecting means, an output power equal to or less than the maximum power to be output to the renewable energy power generation device is calculated and instructed. Has output power command means and
    When it is determined that the power of the power system is less than the predetermined first frequency range based on the system information detected by the system information detecting means.
    The output power command means gives an instruction to the renewable energy power generation device to suppress the output power to reduce the output power.
    Power control device.
  9. 　自然エネルギーにより発電を行い電力系統に電力を供給する自然エネルギー発電装置から出力される最大電力を検出する最大電力検出ステップと、
    　前記電力系統の電力に関する系統情報を検出する系統情報検出ステップと、
    　前記最大電力検出ステップにより検出された前記最大電力、および前記系統情報検出ステップにより検出された前記系統情報に基づき、前記自然エネルギー発電装置に、出力させる前記最大電力以下である出力電力を算出し指示する出力電力指令ステップと、を有し、
    　前記系統情報検出ステップにより検出された前記系統情報に基づき、前記電力系統の電力が予め定められた第１の周波数範囲未満であると判断した場合、
    　前記出力電力指令ステップは、前記自然エネルギー発電装置に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行う、
    　　電力制御用コンピュータプログラム。     A maximum power detection step that detects the maximum power output from a renewable energy power generator that generates power from natural energy and supplies power to the power system, and
    A system information detection step for detecting system information related to the power of the power system, and
    Based on the maximum power detected by the maximum power detection step and the system information detected by the system information detection step, an output power equal to or less than the maximum power to be output to the renewable energy power generation device is calculated and instructed. Has an output power command step and
    When it is determined that the power of the power system is less than the predetermined first frequency range based on the system information detected by the system information detection step.
    The output power command step instructs the renewable energy power generation device to suppress the output power to reduce the output power.
    Computer program for power control.
  10. 　自然エネルギーにより発電を行い電力系統に電力を供給する自然エネルギー発電装置から出力される最大電力を検出する最大電力検出手順と、
    　前記電力系統の電力に関する系統情報を検出する系統情報検出手順と、
    　前記最大電力検出手順により検出された前記最大電力、および前記系統情報検出手順により検出された前記系統情報に基づき、前記自然エネルギー発電装置に、出力させる前記最大電力以下である出力電力を算出し指示する出力電力指令手順と、を有し、
    　前記系統情報検出手順により検出された前記系統情報に基づき、前記電力系統の電力が予め定められた第１の周波数範囲未満であると判断した場合、
    　前記出力電力指令手順は、前記自然エネルギー発電装置に対し、出力電力を減少させる自然エネルギー出力電力抑制指示を行う、
    　　電力制御方法。

          The maximum power detection procedure that detects the maximum power output from the renewable energy power generation device that generates power from natural energy and supplies power to the power system, and
    A system information detection procedure for detecting system information related to the power of the power system and
    Based on the maximum power detected by the maximum power detection procedure and the system information detected by the system information detection procedure, an output power equal to or less than the maximum power to be output to the renewable energy power generation device is calculated and instructed. Has an output power command procedure and
    When it is determined that the power of the power system is less than the predetermined first frequency range based on the system information detected by the system information detection procedure.
    In the output power command procedure, the renewable energy power generation device is instructed to suppress the output power to reduce the output power.
    Power control method.
PCT/JP2020/047239 2019-12-20 2020-12-17 Power control system, power control device, computer program for power control, and power control method WO2021125287A1 (en)

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