WO2014061645A1 - 電源制御システム、制御装置及び制御方法 - Google Patents
電源制御システム、制御装置及び制御方法 Download PDFInfo
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- WO2014061645A1 WO2014061645A1 PCT/JP2013/077933 JP2013077933W WO2014061645A1 WO 2014061645 A1 WO2014061645 A1 WO 2014061645A1 JP 2013077933 W JP2013077933 W JP 2013077933W WO 2014061645 A1 WO2014061645 A1 WO 2014061645A1
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- power supply
- power
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- external power
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- 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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- 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
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- 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
- H02J3/381—Dispersed generators
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- 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
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
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- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/30—The power source being a fuel cell
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- 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
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/10—The network having a local or delimited stationary reach
- H02J2310/12—The local stationary network supplying a household or a building
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/10—Applications of fuel cells in buildings
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- 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
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Definitions
- Embodiments of the present invention provide a power supply control system, a control device, and a control method suitable for connecting a plurality of types of power supplies provided in a house or facility to an external power supply device that is turned on during a power failure in a commercial power system. About.
- an emergency power supply is turned on when a commercial power system fails. For example, it is possible to supply power to houses and facilities by installing emergency power supplies in individual houses, apartment buildings, hospitals, and other facilities, and turning on these emergency power supplies in the event of a power failure. Yes.
- the emergency power supply device is called an external power supply device because it is separated from the load of the house or facility except during a power failure. *
- an engine generator As an external power supply, an engine generator has been used in the past, but recently, a large-capacity storage battery has attracted attention because of improved battery performance and ease of maintenance compared to the generator. Yes.
- An external power supply device using a storage battery is directly charged from a commercial power supply system and discharged during a power failure in the commercial power supply system, thereby supplying power to a house or facility instead of the commercial power supply system. Therefore, the external power supply device using a storage battery has an interconnection operation function with a commercial power supply system and a self-sustaining operation function for independently supplying power.
- the external power supply Since the external power supply is assumed to be used during a power failure in the commercial power system, its storage capacity is limited, and sufficient power is required to operate all the loads in the houses and facilities connected to it. It cannot be supplied. Therefore, it is conceivable that the necessary power supply can be performed by operating the internal power supply B used in each home or facility at the time of a power outage with the external power supply.
- the internal power supply device B includes a power source whose output capacity varies due to factors such as weather, such as a solar power generation device and a wind power generation device. If a device with variable output, such as a solar power generator, is connected to an external power supply, the AC output voltage will change when the output of the solar power generator fluctuates, or if the fluctuation is large The power supply may stop. This phenomenon is particularly noticeable when the capacity of the internal power supply device B whose output capacity varies compared to the output of the external power supply apparatus occupies a relatively large proportion. As a result, synchronous operation may not be possible between the external power supply device and various private power generation devices connected thereto. *
- the object of the embodiment of the present invention is to supply a power source with a variable output capacity such as a photovoltaic power generation device and an internal power supply device B having a power source with little output fluctuation such as a storage battery at the time of a power failure of a commercial power system.
- An object of the present invention is to provide a power supply control system, a control device, and a control method capable of reliably performing a synchronous operation between an external power supply device and an internal power supply device B when connected to an external power supply device.
- the power supply control system, the control device, and the control method according to the embodiment of the present invention are operated by first connecting a power source capable of adjusting an output capacity, such as a storage battery, to an external power supply device that is turned on at the time of a power failure in a commercial power system. Then, a power source such as a fuel cell with a small output fluctuation is connected and operated, and finally a power source such as a solar power generation device with a large fluctuation in output is connected and operated.
- a power source capable of adjusting an output capacity such as a storage battery
- the embodiment of the present invention has the following configuration.
- an external power device When operating at the time of a power failure of the commercial power system, an external power device, a switch for switching between the commercial power system and the external power device at the time of power failure and power recovery, an internal power device having a plurality of internal power sources, A connected load and a control device for controlling the shutdown of these power supplies are provided.
- the internal power supply device includes a power source having a stable output capacity and another power source having a larger variation in output capacity, and each internal power source has a follow-up function with respect to the commercial power supply system and the external power supply device. With this follow-up function, each internal power supply performs a linked operation with a commercial power supply system and an external power supply device.
- the control device switches the switch from the commercial power supply system to the external power supply device during a power failure of the commercial power supply system, and supplies power from the external power supply device to the load.
- the control device After switching the external power supply device, the control device operates a power supply with a stable output capacity in conjunction with the external power supply device, and then connects another power supply with a larger output capacity variation to the external power supply device. Let the system run.
- the block diagram which shows embodiment of this invention The block diagram of the external power supply device in the embodiment of the present invention
- the block diagram of the control apparatus in embodiment of this invention The flowchart explaining operation
- the block diagram which shows other embodiment of this invention The block diagram which shows other embodiment of this invention.
- the power supply control device of this embodiment controls the commercial power supply system A, the external power supply device 1, the internal power supply device B, and their switching operation.
- the control device 6 is provided.
- the internal power supply device B is composed of, for example, a storage battery 2, a fuel cell 3, and a solar power generation device 4. *
- the internal power supply devices B are connected to a load 5 provided in a house or facility via a power supply line.
- the load 5 is a general load provided in a home or facility in which an in-house power generator is installed, such as home appliances such as an air conditioner, motor power, and the like.
- a commercial power supply system A and an external power supply device 1 are connected to the load 5 via a double throw switch 7 and a power supply line.
- the double throw switch 7 is a switch for selectively connecting the commercial power supply system A and the external power supply device 1 to the internal power supply device B and the load 5 and can be switched by a command of the control device 6 or manual operation. is there.
- the double throw switch 7 connects the commercial power supply system A to the internal power supply B and the load 5 in a state where the commercial power supply system A does not fail. Connect to load 5. *
- the external power supply device 1 includes a storage battery 11, an inverter 12, a self-sustaining operation control unit 13, a grid operation control unit 14, and a communication unit 15.
- the output and capacity of the storage battery 11 are not so large as to cover all the electric power of the house or facility connected thereto, and are used together with the internal power supply device B provided in the individual house or facility. Necessary power is supplied to the load 5 provided in. *
- the self-sustained operation control unit 13 operates at the time of a power failure of the commercial power supply system A, outputs a reference frequency such as 50 Hz, and fulfills a self-sustained operation function of operating the inverter 12 regardless of the commercial power supply system A.
- the interconnection operation control unit 14 operates the inverter 12 provided in the external power supply device 1 in association with the commercial power supply system A.
- the communication unit 15 transmits and receives an operation command to the autonomous operation control unit 13 and the interconnection operation control unit 14. *
- the external power supply device 1 is always operated in synchronization with the commercial power supply system A like a storage battery, but may be operated only during a power failure like an engine generator. Further, the external power supply 1 has a peak cut / peak shift function that equalizes the load of the internal power supply B by charging / discharging power to / from the internal power supply B at the time of a power failure of the commercial power supply system. But it ’s okay. *
- the storage battery 2 of the internal power supply device B includes a battery unit 21, a communication unit 22, a control unit 23, and an inverter unit 24.
- the battery unit 21 has a capacity and an output enough to suppress the fluctuation of sunlight and the fluctuation of the load 5 of the photovoltaic power generation apparatus 4 and not to transmit the fluctuation to the external power supply apparatus 1.
- the storage battery 2 is controlled to operate and stop based on a control command from the control device 6 via the communication unit 22.
- the control unit 23 suppresses the operation and stop of the inverter unit 24 and has a follow-up function that synchronizes the AC output of the external AC power supply, that is, the commercial power supply system A and the AC output of the external power supply device 1 at the time of the power failure. . *
- the fuel cell 3 is a generator using gas cogeneration or the like and outputs alternating current. The operation and stop of the fuel cell 3 are instructed by communication from the control device 6. Although not shown, the fuel cell 3 is also provided with a power generation unit, a communication unit, a control unit, and an inverter unit in the same manner as the storage battery 2, and is synchronized with the commercial power supply system A and the AC output of the external power supply 1 at the time of the power failure. It has a function. *
- the solar power generation device 4 is a generator by a solar cell (solar cell), and outputs alternating current.
- the output of this solar power generation device 4 is unstable and influenced by the amount of sunlight (weather / season). If the load is heavy when the output is small, the waveform is distorted or shaded when there are many harmonics. In some cases, the output of the force of interaction is not output.
- the solar power generation device 4 is also provided with a power generation unit, a communication unit, a control unit, and an inverter unit, like the storage battery 2 and the fuel cell 3, and the AC output of the commercial power supply system A and the external power supply device 1 at the time of the power failure Follow-up function to synchronize with *
- the control device 6 includes a power supply monitoring unit 61 that detects a power failure of the commercial power supply system A and detects whether the external power supply device 1 is operating.
- the power supply monitoring unit 61 detects whether AC power is supplied to the commercial power supply system A or the power supply line by a current / voltage sensor (not shown) provided in the commercial power supply system A and the power supply line in the house or facility, According to the detection result, the power failure of the commercial power supply system A and the presence / absence of output from the external power supply 1 are determined.
- the power monitoring unit 61 may detect the operation of the external power supply device 1 through communication with the communication unit 15. *
- the control device 6 transmits a communication unit 62 that transmits a command for controlling the operation of the storage battery 2, a communication unit 63 that transmits a command for controlling the operation of the fuel cell 3, and a command for controlling the operation of the solar power generation device 4. It has the control part 65 provided with the computer program which controls the communication part 64 and each part. Moreover, it has the display part 66 which displays the operation state of the storage battery 2, the fuel cell 3, and the solar power generation device 4, and the operation part 67 which can be input by a touch panel etc. for the initial setting of each apparatus.
- the display unit 66 and the input operation unit 67 are not indispensable in the present embodiment. *
- the power supply monitoring unit 61 provided in the control device 6 constantly monitors the operation of the commercial power supply system A (step 1).
- the control device 6 sets the double throw switch 7 so as to connect the commercial power supply system A to the internal power supply device B and the load 5 in a state where the commercial power supply system A does not fail. Therefore, the storage battery 2, the fuel cell 3, and the solar power generation device 4 provided in the house or facility are commercialized while monitoring the frequency, phase, and voltage of the AC output of the commercial power supply system A by the follow-up function provided for each.
- the system is connected to the power supply system A.
- the control device 6 transmits an operation stop command to all internal power supplies via the communication units 62 to 64. To do. At the same time, the power supply monitoring unit 61 determines whether or not the external power supply device 1 can output AC power by the independent operation (step 2). When the external power supply device 1 is not operating, it waits until it becomes possible to output AC power.
- the power supply monitoring unit 61 determines that AC output by the external power supply device 1 is possible. Whether or not the output of the external power supply device 1 is possible is determined by transmitting monitoring data of the operation status of the external power supply device 1 from the communication unit 15 of the external power supply device 1 to the communication unit 62 of the control device 6. . *
- step 2 When AC output by the external power supply 1 becomes possible (Yes in step 2), the commercial power supply system A is disconnected from the internal power supply B and the load 5 by switching the double throw switch 7 (step 3), and externally The power supply device 1 is connected. As a result, the power is restored by the external power supply device 1 inside the house or facility, and the power supply to the load 5 becomes possible.
- the switching of the double throw switch 7 may be automatically performed according to a command from the control unit 65, or may be manually performed by a manager of a house or facility. *
- the power supply monitoring unit 61 After the connection of the external power supply device 1 is completed, the power supply monitoring unit 61 outputs a start command for the interconnected operation from the communication unit 62 to the communication unit 22 of the storage battery 2, and the control unit 23 of the storage battery 2 The start command is received and the interconnection operation with the external power supply device 1 is started (step 4). This interconnection operation is performed by the control unit 23 of the storage battery 2 controlling the inverter unit 24 in accordance with the frequency or voltage of the AC output supplied by the external power supply device 1. *
- the power supply monitoring unit 61 monitors whether the storage battery 2 is stably outputting AC power (step 5), and the interconnection operation of the storage battery 2 is stabilized. In the meantime, the control device 6 stands by without entering the interconnection operation of the fuel cell 3 or the solar power generation device 4 (No in step 5). *
- the storage battery 2 Since the output power of the storage battery 2 is stable, when the linkage operation with the external power supply device 1 is started, harmonic distortion or the like does not occur in the power line inside the house or facility, and after the connection However, stable power supply is performed.
- the storage battery 2 is a power supply whose output capacity can be adjusted, and has the ability to alleviate output fluctuations of other internal power supplies and load fluctuations.
- the time from the power recovery to the start of the interconnected operation of the storage battery 2 is defined as t1. *
- the control device 6 After confirming that the storage battery 2 is stably outputting AC power by the power supply monitoring unit 61 (Yes in Step 5), the control device 6 performs the interconnection operation with respect to the fuel cell 3 by the communication unit 63. Send a start command.
- the fuel cell 3 receives this start command and starts the interconnection operation.
- the time from the power recovery to the start of the linked operation of the fuel cell 3 is assumed to be t2. In this case, since only the storage battery 2 having a stable output capacity is connected to the external power supply device 1, no voltage fluctuation occurs in the power supply line. Therefore, the follow-up function of the fuel cell 3 can be connected to the external power supply device 1 without being affected by the previously connected storage battery 2.
- the control device 6 transmits a start command for the interconnection operation to the solar power generation device 4 through the communication unit 64, and the solar power generation device 4 receives this start command and starts the interconnection operation.
- the time from the power recovery to the start of the interconnection operation of the solar power generation device 4 is assumed to be t3. Since the capacity output of the fuel cell 3 is stable like the storage battery, voltage fluctuations in the power supply line do not occur. The solar power generation device 4 can acquire information on the AC output flowing through the power supply line, and can be reliably connected.
- the times t1, t2, and t3 from the recovery of the power source to the start of the grid battery 2, the fuel cell 3, and the photovoltaic power generation device 4 are set to t1 ⁇ t2 ⁇ t3.
- An internal power supply that is subject to fluctuations and easily generates fluctuations in the power supply voltage during the interconnection operation will be connected to the external power supply device 1 later.
- the inconvenience that the connected operation of the power supply to be connected later becomes difficult due to the influence of the power supply connected first. Is resolved. *
- the control unit 65 stops the operation of the external power supply device 1 and the internal power supply device B, and then sets the double throw switch 7 to the commercial power supply system A side. Switch. After that, the control unit 65 confirms that the commercial power supply system A is supplied to the power supply line, and then, similarly to the case where the external power supply device 1 is turned on, the storage battery 2, the fuel cell 3, and the solar power generation device 4 Start the grid operation in the following order. Also in this case, each internal power supply performs the interconnection operation with the commercial power supply system A by the tracking function of each internal power supply. *
- each internal power supply it is detected that the power supply to the power supply line has been cut off, and the operation of each internal power supply is automatically stopped.
- the AC output from the external power supply device 1 and the commercial power supply system A can be detected, and each internal power supply can be made to follow it, so that the interconnection operation can be performed smoothly.
- FIG. 6 is a block diagram showing the configuration of the second embodiment of the present invention.
- the present embodiment is characterized in that a manager of a house or facility manually performs an operation performed by the control device 6 without providing the control device 6 in the first embodiment.
- each of the storage battery 2, the fuel cell 3 and the solar power generation device 4 constituting the internal power supply device B is provided with operation stop devices S2 to S4 when it is detected that no power is supplied to the power supply line. Yes. Therefore, when the commercial power supply system A fails and the power supply to the power supply line is cut off, each of the operation stop devices S2 to S4 detects this and stops all the internal power supply devices. When the administrator knows that a power failure has occurred due to a load stop or an emergency light provided separately, the administrator manually switches the double throw switch 7 to connect the external power supply 1 to the power line. *
- the administrator manually releases the operation stop device S2 of the storage battery 2 and starts the operation of the storage battery 2. Since the storage battery 2 has a follow-up function, the storage battery 2 starts an interconnection operation with the external power supply device 1. In the same manner, the administrator sequentially releases the operation stop device S3 of the fuel cell 3 and the operation stop device S4 of the solar power generation device 4 so that all the internal power supply devices B and the external power supply devices 1 Performs interconnected operation.
- the internal power supply that is subject to fluctuations in output capacity and is likely to generate output fluctuations during the interconnection operation will be connected to the external power supply device 1 later.
- the inconvenience that it becomes difficult to perform a linked operation of the power supply to be connected later due to the influence of the previously connected power supply is solved.
- the storage battery 2 is used as a power source with little fluctuation in output capacity provided in the internal power supply, but other types such as a fuel cell 4 instead of the storage battery 2 or an electric vehicle storage battery connected to a house or facility Can be used. *
- a stop command is output from the control device 6 to each internal power supply as means for detecting that the commercial power supply system A has failed.
- the operation is stopped at each internal power supply.
- Devices S2 to S4 may be provided.
- the external power supply 1 and the switch 7 are installed outside the housing complex such as a house or a condominium, but the external power device 1 and the switch 7 are installed inside the housing such as a housing or a condominium. It is good also as what is installed in. Moreover, the opening / closing control of the switch 7 may be performed by the control device 6 as in the first embodiment. *
- the external power supply device 1 is configured by an engine generator or a storage battery.
- the external power supply device 1 may be configured by a solar power generation device or a fuel cell.
- the external power supply device 1 comprised by the engine generator and the storage battery, and the solar power generation device 4 may be installed in parallel.
- a switch 71 is provided between the system and the external power source 1 or the photovoltaic power generation 4, and when a power failure is detected in the system, the electrical connection between the system and the internal power supply is connected to the system side contact of the double throw switch 7.
- the switch 71 is opened, and the power from the external power source 1 and the photovoltaic power generation device 4 is connected to the internal power supply device via the contact 7b of the double throw switch 7. You may be made to do.
- the open / close control of the double throw switch 7 and the switch 71 may be performed by the control device 6 as in the first embodiment.
- a ... Commercial power supply system B Internal power supply device 1 ... External power supply device 11 ... Storage battery 12 ... Inverter unit 13 ... Self-sustained operation control unit 14 ... Interconnected operation control unit 15 ... Communication unit 2 ... Storage battery 21 ... Battery unit 22 ... Communication unit DESCRIPTION OF SYMBOLS 23 ... Control part 24 ... Inverter part 3 ... Fuel cell 4 ... Solar power generation device 5 ... Load 6 ... Control device 61 ... Power supply monitoring part 62-64 ... Communication part 65 ... Control part 66 ... Display part 67 ... Operation part 7 ... Double throw switch 71 ... Switch 7a, 7b ... Contact S2-S4 ... Operation stop device
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
Description
まで待機する。
Claims (8)
- 商用電源系統の停電時に動作すると外部電源装置と、停電及び復電時に商用電源系統と外部電源装置とを切り換えるスイッチと、複数の内部電源を備えた内部電源装置と、これらの電源に接続された負荷と、これらの電源の運転停止を制御する制御装置を備えた電源制御システムにおいて、 前記内部電源装置は、出力容量の安定した電源と、それよりも出力容量の変動が大きい他の電源とを備え、 前記各内部電源は前記商用電源系統及び前記外部電源装置に対する追従機能を備え、この追従機能により各内部電源は商用電源系統及び外部電源装置と連系運転を行うものであり、 前記制御装置は、商用電源系統の停電時において、前記スイッチを前記商用電源系統から前記外部電源装置に切り換えて、外部電源装置からの電力を前記負荷に供給し、 前記制御装置は、前記外部電源装置の切り換え後、出力容量の安定した電源を前記外部電源装置と連系運転させた後、それよりも出力容量の変動が大きい他の電源を前記外部電源装置と連系運転させることを特徴とする電源制御システム。
- 前記出力容量の安定した電源が蓄電池または燃料電池であり、それよりも出力容量の変動が大きい他の電源が太陽光発電装置であることを特徴とする請求項1に記載の電源制御システム。
- 前記内部電源装置及び/または前記外部電源装置は、個々の住宅や施設ごと、或いは複数の住宅や施設ごとに設けられていることを特徴とする請求項1または請求項2に記載の電源制御システム。
- 前記制御装置は、前記商用電源系統及び/または前記外部電源装置の停止を検出した際に、前記内部電源装置を構成する各内部電源の運転を停止することを特徴とする請求項1~請求項3のいずれか1項に記載の電源制御システム。
- 前記外部電源装置が蓄電池によって構成され、前記商用電源系統の運転時には、前記外部電源装置を商用電源系統によって充電し、商用電源系統の停電時に前記内部電源装置側に余剰電力がある場合には、前記外部電源装置を前記内部電源装置によって充電することを特徴とする請求項1に記載の電源制御システム。
- 前記商用電源系統の非停電時に、前記外部電源装置を負荷平準化用に動作させることを特徴とすると請求項1~請求項5のいずれか1項に記載の電源制御システム。
- 商用電源系統の停電時に動作すると外部電源装置と、停電及び復電時に商用電源系統と外部電源装置とを切り換えるスイッチと、複数の内部電源を備えた内部電源装置と、これらの電源に接続された負荷と、これらの電源の運転停止を制御する制御装置を備えた電源制御装置において、 前記内部電源装置は、出力容量の安定した電源と、それよりも出力容量の変動が大きい他の電源とを備え、 前記各内部電源は前記商用電源系統及び前記外部電源装置に対する追従機能を備え、この追従機能により各内部電源は商用電源系統及び外部電源装置と連系運転を行うものであり、 前記制御装置は、 前記商用電源系統の停電を検出する電源監視部と、 前記スイッチを前記商用電源系統から前記外部電源装置に切り換えて、外部電源装置からの電力を前記負荷に供給し、前記外部電源装置の切り換え後、出力容量の安定した電源を前記外部電源装置と連系運転させた後、それよりも出力容量の変動が大きい他の電源を前記外部電源装置と連系運転させる制御部と、を有することを特徴とする電源制御装置。
- 商用電源系統の停電時に動作すると外部電源装置と、停電及び復電時に商用電源系統と外部電源装置とを切り換えるスイッチと、複数の内部電源を備えた内部電源装置と、これらの電源に接続された負荷とを備え、 前記商用電源系統の停電時には、前記スイッチにより前記商用電源系統から前記外部電源装置への切換を行い、 その後、前記負荷に接続された前記外部電源装置に対して、出力容量の変動の少ない電源を最初に接続し、その電源と前記外部電源装置との連系運転を行い、その後に、出力容量が変動する電源を接続し、その電源と前記外部電源装置との連系運転を行うことを特徴とする電源制御方法。
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EP13847832.6A EP2911272A1 (en) | 2012-10-16 | 2013-10-15 | Power source control system, control device and control method |
KR1020157009001A KR20150054921A (ko) | 2012-10-16 | 2013-10-15 | 전원 제어 시스템, 제어 장치 및 제어 방법 |
CN201380046465.4A CN105052005A (zh) | 2012-10-16 | 2013-10-15 | 电源控制系统、控制装置以及控制方法 |
US14/434,169 US20150270745A1 (en) | 2012-10-16 | 2013-10-15 | Power-supply control system, control device and control method |
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JP2012229261A JP2014082867A (ja) | 2012-10-16 | 2012-10-16 | 電源制御システム、制御装置及び制御方法 |
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JP6163121B2 (ja) * | 2014-02-26 | 2017-07-12 | サンケン電気株式会社 | 自立運転システム |
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JP6692205B2 (ja) * | 2016-04-25 | 2020-05-13 | 三菱電機株式会社 | 連系運転制御装置およびこれを用いた分散型電源の運転システム並びに連系運転制御方法 |
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KR102587873B1 (ko) | 2018-03-12 | 2023-10-12 | 한국전자통신연구원 | 무순단 전력 공급 장치 및 방법 |
JP7417972B2 (ja) * | 2018-04-19 | 2024-01-19 | パナソニックIpマネジメント株式会社 | 電力システムおよび電力システムの制御方法 |
US11334135B1 (en) * | 2019-03-28 | 2022-05-17 | Amazon Technologies, Inc. | Power supply optimization using backup battery power supplementation |
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JP7299818B2 (ja) * | 2019-10-17 | 2023-06-28 | 株式会社東芝 | 燃料電池システムおよび燃料電池システムの制御方法 |
CN112615424A (zh) * | 2020-12-25 | 2021-04-06 | 南京工业职业技术大学 | 临时供电状态监测系统及方法 |
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- 2013-10-15 US US14/434,169 patent/US20150270745A1/en not_active Abandoned
- 2013-10-15 EP EP13847832.6A patent/EP2911272A1/en not_active Withdrawn
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KR20150054921A (ko) | 2015-05-20 |
CN105052005A (zh) | 2015-11-11 |
EP2911272A1 (en) | 2015-08-26 |
US20150270745A1 (en) | 2015-09-24 |
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