WO2018139603A1 - Procédé de commande d'alimentation électrique, dispositif de commande d'alimentation électrique, et système de commande d'alimentation électrique - Google Patents

Procédé de commande d'alimentation électrique, dispositif de commande d'alimentation électrique, et système de commande d'alimentation électrique Download PDF

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Publication number
WO2018139603A1
WO2018139603A1 PCT/JP2018/002558 JP2018002558W WO2018139603A1 WO 2018139603 A1 WO2018139603 A1 WO 2018139603A1 JP 2018002558 W JP2018002558 W JP 2018002558W WO 2018139603 A1 WO2018139603 A1 WO 2018139603A1
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Prior art keywords
distributed power
power supply
power source
priority
power
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PCT/JP2018/002558
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English (en)
Japanese (ja)
Inventor
竜也 卯花
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京セラ株式会社
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Priority to JP2018564662A priority Critical patent/JPWO2018139603A1/ja
Publication of WO2018139603A1 publication Critical patent/WO2018139603A1/fr

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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
    • 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
    • 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

Definitions

  • This disclosure relates to a power control method, a power control device, and a power control system.
  • Patent Document 1 a system including a fuel cell device, a solar cell device, and a storage battery device is known (for example, Patent Document 1).
  • the solar cell device is controlled to operate at the maximum operating point.
  • the power control method includes a first distributed power source having a first priority as a cost priority, a second distributed power source having a second priority lower than the first priority as the cost priority, and Controlling a third distributed power source having a third priority lower than the second priority as the cost priority based on the cost priority; the first distributed power source; the second distributed power source; Step B for detecting any failure of the third distributed power source, and Step C for controlling a normal distributed power source that is a distributed power source other than the distributed power source in which the failure is detected when the failure is detected.
  • the step C includes a step of controlling the normal distributed power source based on load followability relating to an output that the normal distributed power source can increase per unit time.
  • the power supply control device includes a first distributed power source having a first priority as a cost priority, a second distributed power source having a second priority lower than the first priority as the cost priority, and A control unit that controls a third distributed power source having a third priority lower than the second priority as the cost priority based on the cost priority, the first distributed power source, the second distributed power source, and And a detection unit that detects any failure of the third distributed power supply.
  • the control unit is configured to perform normal distribution based on load followability related to an output in which a normal distributed power source that is a distributed power source other than the distributed power source in which the failure is detected can increase per unit time. Control the power supply.
  • a power supply control system includes a first distributed power supply having a first priority as a cost priority and a second distributed power supply having a second priority lower than the first priority as the cost priority. And a third distributed power supply having a third priority lower than the second priority as the cost priority, and a power supply control device for controlling the first distributed power supply, the second distributed power supply, and the third distributed power supply With.
  • the power supply control device detects a failure of any of the first distributed power supply, the second distributed power supply, and the third distributed power supply.
  • the power supply control device when the failure is detected, the normal distributed power supply that is a distributed power supply other than the distributed power supply in which the failure is detected is based on load followability related to an output that can be increased per unit time. Control distributed power.
  • FIG. 1 is a diagram illustrating a power supply control system 100 according to an embodiment.
  • FIG. 2 is a diagram illustrating a facility 300 according to an embodiment.
  • FIG. 3 is a diagram illustrating a power management server 200 according to an embodiment.
  • FIG. 4 is a diagram illustrating the local control device 360 according to an embodiment.
  • FIG. 5 is a diagram for explaining an example of the application scene according to the embodiment.
  • FIG. 6 is a diagram for explaining an example of the application scene according to the embodiment.
  • FIG. 7 is a diagram for explaining an example of the application scene according to the embodiment.
  • FIG. 8 is a diagram for explaining an example of the application scene according to the embodiment.
  • FIG. 9 is a diagram for explaining an example of the application scene according to the embodiment.
  • FIG. 10 is a diagram illustrating a power control method according to an embodiment.
  • FIG. 11 is a diagram illustrating a power control method according to an embodiment.
  • the present disclosure relates to a power supply control method, a power supply control apparatus, and a power supply control capable of optimizing the operation of a normal distributed power supply even when any of a fuel cell device, a solar cell device, and a storage battery device fails.
  • a power supply control method capable of optimizing the operation of a normal distributed power supply even when any of a fuel cell device, a solar cell device, and a storage battery device fails.
  • the power supply control system 100 includes a power management server 200 and a facility 300.
  • a facility 300A to a facility 300C are illustrated.
  • Each facility 300 is connected to the power system 110.
  • the flow of power from the power system 110 to the facility 300 is referred to as tidal current, and the flow of power from the facility 300 to the power system 110 is referred to as reverse power flow.
  • the power management server 200 and the facility 300 are connected to the network 120.
  • the network 120 may provide a line between the power management server 200 and the facility 300.
  • the network 120 is, for example, the Internet.
  • the network 120 may provide a dedicated line such as a VPN (Virtual Private Network).
  • the power management server 200 is a server managed by a business operator such as a power generation business, a power transmission / distribution business, or a retail business.
  • the power management server 200 transmits, to the local control device 360 provided in the facility 300, a control message instructing control of a distributed power source (for example, a solar cell device, a storage battery device, and a fuel cell device) provided in the facility 300.
  • a distributed power source for example, a solar cell device, a storage battery device, and a fuel cell device
  • the power management server 200 may transmit a power flow control message (for example, DR; Demand Response) that requests control of power flow, or may transmit a reverse power flow control message that requests control of reverse power flow.
  • the power management server 200 may transmit a power control message for controlling the operating state of the distributed power.
  • the degree of control of the tidal current or the reverse tidal current may be represented by an absolute value (for example, OO kW) or a relative value (for example, OO%).
  • control degree of a tidal current or a reverse tidal current may be represented by two or more levels.
  • the degree of control of the tidal current or reverse power flow may be represented by a power rate (RTP: Real Time Pricing) determined by the current power supply / demand balance, or a power rate (TOU: Time Of Use) determined by the past power supply / demand balance May be represented by
  • the facility 300 includes a router 500 as shown in FIG.
  • the router 500 is connected to the power management server 200 via the network 120.
  • the router 500 constitutes a local area network and is connected to each device (for example, a power meter 321, a power meter 323, a PCS 331, a PCS 332, a PCS 333 load 350, a local control device 360, and the like).
  • a solid line indicates a power line
  • a dotted line indicates a signal line.
  • the embodiment is not limited to this, and a signal may be transmitted through a power line.
  • the facility 300 includes a solar cell 311, a storage battery 312, a fuel cell 313, a hot water supply device 314, a power meter 321, a power meter 323, a PCS 331, a PCS 332, a PCS 333, a distribution board 340, and a load 350. And a local control device 360.
  • the solar cell 311 is a device that generates power in response to light reception.
  • the solar cell 311 outputs the generated DC power.
  • the amount of power generated by the solar cell 311 changes according to the amount of solar radiation applied to the solar cell 311.
  • the storage battery 312 is a device that stores electric power.
  • the storage battery 312 outputs the accumulated DC power.
  • the storage battery 312 may be a power source used for VPP (Virtual Power Plant).
  • the fuel cell 313 is a battery that generates electric power using fuel.
  • the fuel may be, for example, a material containing hydrogen or a material containing alcohol.
  • the fuel cell 313 includes, for example, a solid oxide fuel cell (hereinafter referred to as SOFC: Solid Oxide Fuel Cell), a solid polymer fuel cell (hereinafter referred to as PEFC: Polymer Electrolyte Fuel Cell), a phosphoric acid fuel cell (hereinafter referred to as PAFC). : Phosphoric Acid Fuel Cell) or Molten Carbonate Fuel Cell (hereinafter referred to as MCFC: Molten Carbonate Fuel Cell).
  • SOFC Solid Oxide Fuel Cell
  • PEFC Polymer Electrolyte Fuel Cell
  • PAFC phosphoric acid fuel cell
  • MCFC Molten Carbonate Fuel Cell
  • the hot water supply device 314 has a hot water storage tank, and uses the exhaust heat of the fuel cell 313 to maintain or increase the amount of water (hot water) stored in the hot water storage tank, or to store water in the hot water storage tank. Maintain or increase the temperature of (hot water). Such control may be referred to as boiling water stored in the hot water tank.
  • the wattmeter 321 is a wattmeter that measures the output power of the PCS 331.
  • the wattmeter 321 may be a wattmeter that measures the generated power of the solar cell 311.
  • the wattmeter 321 may be a CT (Current Transformer) that measures the output current of the PCS 331.
  • the wattmeter 323 is a wattmeter that measures the output power of the PCS 333.
  • the wattmeter 323 may be a wattmeter that measures the power generated by the fuel cell 313.
  • the wattmeter 323 may be a CT that measures the output current of the PCS 333.
  • the PCS 331 is a power conversion device (PCS; Power Conditioning System) connected to the solar cell 311.
  • the PCS 331 converts DC power from the solar cell 311 into AC power.
  • the PCS 331 may output the converted AC power to the first distribution board 340A.
  • the PCS 331 may output the converted AC power to the storage battery 312.
  • PCS 332 is a power conversion device connected to the storage battery 312.
  • the PCS 332 converts DC power from the storage battery 312 into AC power.
  • the PCS 332 outputs the converted AC power to the first distribution board 340A.
  • the PCS 332 converts AC power to the storage battery 312 into DC power.
  • the PCS 332 outputs the converted DC power to the storage battery 312.
  • PCS333 is a power converter connected to the fuel cell 313.
  • the PCS 333 converts DC power from the fuel cell 313 into AC power.
  • the PCS 333 may output the converted AC power to the first distribution board 340A.
  • the PCS 333 may output the converted AC power to the storage battery 312.
  • Distribution board 340 is connected to main power line 10L.
  • the distribution board 340 includes a first distribution board 340A and a second distribution board 340B.
  • the first distribution board 340A is connected to the power system 110 via the main power line 10LA.
  • the first distribution board 340A is connected to the solar cell 311 via the PCS 331, is connected to the storage battery 312 via the PCS 332, and is connected to the fuel cell 313 via the PCS 333.
  • the first distribution board 340 ⁇ / b> A may supply AC power supplied from the power system 110 to the storage battery 312 via the PCS 332.
  • the first distribution board 340A may supply the AC power supplied from the PCS 331 to the power system 110 via the main power line 10LA as a reverse power flow.
  • the first distribution board 340A may supply the AC power supplied from the PCS 332 to the power system 110 via the main power line 10LA as a reverse power flow.
  • the first distribution board 340A may supply the AC power supplied from the PCS 333 to the power system 110 via the main power line 10LA as a reverse power flow.
  • the first distribution board 340A supplies the power output from the PCS 331 to PCS 333 and the power supplied from the power system 110 to the second distribution board 340B via the main power line 10LB.
  • the second distribution board 340B distributes the power supplied via the main power line 10LB to each device.
  • Each device is, for example, a load 350, a local control device 360, and the like.
  • the load 350 is a device that consumes power supplied through the power line.
  • the load 350 includes devices such as an air conditioner, a lighting device, a refrigerator, and a television.
  • the load 350 may be a single device or may include a plurality of devices.
  • the local control device 360 is a device (EMS; Energy Management System) that manages power information indicating power in the facility 300.
  • the power in the facility 300 is the power flowing through the facility 300, the power purchased by the facility 300, or the power sold from the facility 300. Accordingly, the local control device 360 manages at least the PCS 331 to PCS 333.
  • the local control device 360 may manage the load 350. Further, when the load 350 includes a plurality of devices, the local control device 360 may manage some of the plurality of devices. In this case, the local control device 360 may manage a plurality of devices according to a predetermined priority order. Further, such a priority order may be determined by the local control device 360 based on the power consumption amount consumed by the load 350.
  • the solar cell 311 is an example of a first distributed power source having a first priority as a cost priority.
  • a single solar cell 311 may be referred to as a solar cell device, and the solar cell 311 and the PCS 331 may be referred to as a solar cell device.
  • the solar cell device is a distributed power source having first load followability as load followability.
  • the fuel cell 313 is an example of a second distributed power source having a second priority lower than the first priority as the cost priority.
  • the single fuel cell 313 may be referred to as a fuel cell device
  • the fuel cell 313 and the PCS 333 may be referred to as a fuel cell device
  • the fuel cell 313, the hot water supply device 314, and the PCS 333 may be referred to as a fuel cell device.
  • the fuel cell device is a distributed power source having a second load followability as load followability.
  • the second load followability may be similar to the first load followability, or may be inferior to the first load followability.
  • the storage battery 312 is an example of a third distributed power source having a third priority lower than the second priority as the cost priority.
  • the single storage battery 312 may be referred to as a storage battery device, and the storage battery 312 and the PCS 332 may be referred to as storage battery devices.
  • the storage battery device is a distributed power source having a third load followability.
  • the third load followability is superior to at least the second load followability.
  • the third load followability may be superior to the first load followability.
  • the power cost of the fuel cell 313 mainly depends on the charge of gas serving as fuel.
  • the power cost of the storage battery 312 mainly depends on the power charge when charging. For example, the power cost of the storage battery 312 is calculated based on the power charge when purchasing power from the power system 110. Moreover, if the storage battery 312 charges the generated electric power of the solar cell 311, the power cost can be further reduced. As described above, the power cost of the storage battery 312 varies depending on the power source (charging power source) used for the charging operation of the storage battery 312.
  • the storage battery 312 may have a higher cost priority than the fuel cell 313.
  • the solar cell 311 does not require fuel or the like during power generation, and therefore has a lower power cost and higher cost priority than the fuel cell 313 and the storage battery 312. Therefore, since the cost priority of the solar cell 311 is higher than the cost priority of the fuel cell 313, the cost priority of the storage battery 312 in the case where the power source used for charging is the solar cell 311 is that the power source used for charging is the fuel cell 313. It is higher than the cost priority of the storage battery 312 in a certain case.
  • the cost priority of the storage battery 312 in the case where the power source used for charging is the fuel cell 313 is that the power source used for charging is power. It becomes higher than the cost priority of the storage battery 312 in the case of the system 110.
  • the load followability varies depending on the type of the distributed power supply.
  • the distributed power supply having better load followability is more likely to follow the power output to the change in the power consumption of the load 350.
  • the load following speed is fast.
  • the load following speed is output power that the distributed power source can increase per unit time in accordance with an increase in power consumption of the load 350.
  • the load follow-up speed may be output power that the distributed power supply can reduce in unit time in accordance with a decrease in power consumption of the load 350.
  • communication between the power management server 200 and the local control device 360 is performed according to the first protocol.
  • communication between the local control device 360 and the distributed power supply is performed according to a second protocol different from the first protocol.
  • the first protocol for example, a protocol compliant with Open ADR (Automated Demand Response) 2.0 or a unique dedicated protocol can be used.
  • the second protocol for example, a protocol conforming to ECHONET Lite, SEP (Smart Energy Profile) 2.0, KNX, or an original dedicated protocol can be used.
  • the first protocol and the second protocol only need to be different. For example, even if both are unique dedicated protocols, they may be protocols created according to different rules.
  • the power management server 200 includes a management unit 210, a communication unit 220, and a control unit 230.
  • the power management server 200 is an example of a VTN (Virtual Top Node).
  • the management unit 210 is configured by a storage medium such as a non-volatile memory and / or an HDD, and manages data related to the facility 300.
  • the data related to the facility 300 includes, for example, the type of the distributed power source provided in the facility 300, the specifications of the distributed power source provided in the facility 300, and the like.
  • the spec may be the rated generated power of the PCS 331 connected to the solar cell 311, the rated output power of the PCS 332 connected to the storage battery 312, the rated output power of the PCS 333 connected to the fuel cell 313, and the like.
  • the communication unit 220 includes a communication module, and communicates with the local control device 360 via the network 120. As described above, the communication unit 220 performs communication according to the first protocol. For example, the communication unit 220 transmits the first message to the local control device 360 according to the first protocol. The communication unit 220 receives the first message response from the local control device 360 according to the first protocol.
  • the control unit 230 includes a memory, a CPU, and the like, and controls each component provided in the power management server 200. For example, the control unit 230 instructs the local control device 360 provided in the facility 300 to control the distributed power source provided in the facility 300 by transmitting a control message. The control unit 230 may instruct the local control device 360 provided in the facility 300 to control the load 350 provided in the facility 300. As described above, the control message may be a power flow control message, a reverse power flow control message, or a power control message.
  • the local control device 360 includes a first communication unit 361, a second communication unit 362, and a control unit 363.
  • the local control device 360 is an example of a VEN (Virtual End Node).
  • the first communication unit 361 is configured by a communication module and communicates with the power management server 200 via the network 120. As described above, the first communication unit 361 performs communication according to the first protocol. For example, the first communication unit 361 receives the first message from the power management server 200 according to the first protocol. The first communication unit 361 transmits a first message response to the power management server 200 according to the first protocol.
  • the second communication unit 362 includes a communication module, and communicates with distributed power sources (for example, PCS331 to PCS333). As described above, the second communication unit 362 performs communication according to the second protocol. For example, the second communication unit 362 transmits the second message to the distributed power source according to the second protocol. The second communication unit 362 receives the second message response from the distributed power source according to the second protocol. In addition, the second communication unit 362 may transmit the second message to the load 350 according to the second protocol. Further, the second communication unit 362 may receive the second message response from the load 350 according to the second protocol.
  • distributed power sources for example, PCS331 to PCS333.
  • the control unit 363 includes a memory and a CPU, and controls each component provided in the local control device 360. Specifically, in order to control the power of the facility 300, the control unit 363 instructs the distributed power supply to set the operating state of the distributed power supply by transmitting the second message and receiving the second message response. In order to manage the power of the facility 300, the control unit 363 may instruct the distributed power supply to report information on the distributed power supply by transmitting the second message and receiving the second message response. Further, the control unit 363 may instruct the load 350 to set the operation state of the load 350 by transmitting the second message and receiving the second message response. Further, the control unit 363 may instruct the load 350 to report information on the load 350 by transmitting the second message and receiving the second message response in order to manage the power of the facility 300.
  • the control unit 363 controls the solar cell device including at least the solar cell 311, the storage battery device including at least the storage battery 312, and the fuel cell device including at least the fuel cell 313 based on the cost priority (hereinafter, plan control). ).
  • plan control determines the operation plan of each distributed power source based on the predicted value of the power consumption of the load 350 on the assumption that the solar cell device, the storage battery device, and the fuel cell device are operating normally.
  • the operation plan is a plan for a predetermined period (for example, one day, one week, etc.).
  • the control unit 363 determines the operation plan based on the cost priority of each distributed power source, but may determine the operation plan in consideration of other factors. Other factors include the selling price of the generated power of the solar cell 311, the purchase price of the power supplied from the power system 110, the environmental load such as CO 2 emission, the amount of hot water or hot water of the hot water supply device 314, the facility 300 User preferences (settings).
  • the control unit 363 detects a failure and recovery of any of the solar cell device, the storage battery device, and the fuel cell device.
  • the control unit 363 may detect a failure based on a communication error between the second communication unit 362 and the PCS 331 to PCS 333, or detect a failure based on a message received by the second communication unit 362 from the PCS 331 to PCS 333. May be.
  • the control unit 363 may detect recovery based on the release of the communication error between the second communication unit 362 and the PCS 331 to PCS 333, and recover based on the message received by the second communication unit 362 from the PCS 331 to PCS 333. May be detected. Therefore, the detection unit that detects the failure and recovery of each distributed power supply is the control unit 363. However, the detection unit that detects failure and recovery of each distributed power supply may be considered to be the second communication unit 362.
  • the control unit 363 performs first failure control when a failure of the solar cell device is detected.
  • the control unit 363 performs the first recovery control when the recovery of the solar cell device is detected.
  • 1st failure control is control which substitutes the output electric power (planned value) of a solar cell apparatus with another power supply.
  • the other power source is selected based on load followability from the necessity of replacing the output power (planned value) of the solar cell device.
  • the other power source may be, for example, a storage battery device having excellent load followability, or the power system 110.
  • the output power of the fuel cell device is not the maximum output, the output power of the fuel cell device may increase within a range not exceeding the maximum output. In such a case, the load followability of the fuel cell device is considered.
  • 1st restoration control is control which returns the output electric power of a solar cell apparatus to a plan value.
  • the operation plan is determined based on the cost priority, when the output power of the solar cell device cannot be immediately returned to the planned value, the load followability of the solar cell device is taken into consideration. Details of the first failure control and the second recovery control will be described later (see FIGS. 6 and 7).
  • the control unit 363 performs second failure control when a failure of the fuel cell device is detected.
  • the control unit 363 performs the second restoration control when the restoration of the fuel cell device is detected.
  • the second failure control is control for substituting the output power (planned value) of the fuel cell device with another power source.
  • the other power source is selected based on the load followability from the necessity of replacing the output power (planned value) of the fuel cell device.
  • the other power source may be, for example, a storage battery device having excellent load followability, or the power system 110.
  • the output power of the solar cell device is not the maximum output, the output power of the solar cell device may be increased within a range not exceeding the maximum output. In such a case, the load followability of the solar cell device is considered.
  • the second recovery control is control for returning the output power of the fuel cell device to a planned value.
  • the operation plan is determined based on the cost priority. However, when the output power of the fuel cell device cannot be immediately returned to the planned value, the load followability of the fuel cell device is taken into consideration. Details of the second failure control and the second recovery control will be described later (see FIGS. 8 and 9).
  • the control unit 363 performs the third failure control when a failure of the storage battery device is detected.
  • the control unit 363 performs the third recovery control when the recovery of the storage battery device is detected.
  • 3rd failure control is control which substitutes the output electric power (planned value) of a storage battery apparatus with another power supply.
  • the other power source is selected based on load followability from the necessity of replacing the output power (planned value) of the storage battery device.
  • the other power source may be, for example, the power system 110.
  • the output power of the solar cell device or the fuel cell device is not the maximum output, the output power of the solar cell device or the fuel cell device may be increased within a range not exceeding the maximum output. In such a case, the load followability of the solar cell device or the fuel cell device is considered.
  • the third recovery control is control for returning the output power of the storage battery device to the planned value. Since the load followability of the storage battery device is excellent, the load followability need not be considered in the third recovery control.
  • the control unit 363 controls a normal distributed power source that is a distributed power source other than the distributed power source in which the failure is detected.
  • the control unit 363 basically controls the normal distributed power supply based on load followability.
  • the control unit 363 controls the normal distributed power source based on the cost priority within the range allowed by the load followability after controlling the normal distributed power source based on the load followability during the failure period in which the failure occurs. May be.
  • the control unit 363 may control the recovery distributed power source that is the distributed power source in which the recovery is detected based on the load followability in addition to the cost priority.
  • the zero energy facility means a facility that covers all the power consumption of the load 350 by the output power of the distributed power source provided in the facility 300 without depending on the power supplied from the power system 110.
  • the storage battery device when the storage battery device is performing the charging operation, the storage battery device may be considered as one of the loads 350.
  • the local control device 360 assumes that the solar cell device, the storage battery device, and the fuel cell device are operating normally, based on the predicted value of the power consumption of the load 350. Determine the operation plan.
  • “power demand” is the transition of the predicted value of the power consumption of the load 350.
  • “PV ⁇ load” is a planned value of the output power of the solar cell device.
  • “FC ⁇ load” is a planned value of output power of the fuel cell device.
  • “BAT ⁇ Load” is a planned value of the output power (discharge power) of the storage battery device.
  • PV ⁇ load”, “FC ⁇ load” and “BAT ⁇ load” are determined based on the cost priority, but it is a matter of course that the maximum output is not exceeded.
  • FIG. 7 is a diagram focusing on the failure period (PV failure period) of the solar cell device.
  • a failure of the solar cell device occurs at 12:00 and 13:00.
  • the output power (planned value) of the solar cell device is basically replaced by the output power of the storage battery device and the fuel cell device.
  • the output power of the storage battery device increases based on the load following ability. Subsequently, the output power of the fuel cell device increases due to the decrease in the output power of the storage battery device.
  • the output power of the storage cell device decreases according to the load followability of the fuel cell device, thereby increasing the output power of the fuel cell device.
  • the cost priority of the fuel cell device is higher than the cost priority of the storage battery device. That is, the local control device 360 increases the output power of the storage battery device based on the load followability during the PV failure period, and then the storage battery based on the cost priority within the range allowed by the load followability of the fuel cell device. By reducing the output power of the device, the output power of the fuel cell device is increased within a range not exceeding the maximum output.
  • the output power of the solar cell apparatus is returned to the level immediately before the PV failure period. Thereafter, as the output power of the fuel cell device decreases, the output power of the solar cell device returns to the planned value while the output power of the fuel cell device returns to the planned value.
  • FIG. 9 is a diagram focusing on the failure period (FC failure period) of the fuel cell device.
  • the fuel cell device fails at the time of 12:00 and 13:00.
  • the output power (planned value) of the fuel cell device is basically replaced by the output power of the storage battery device.
  • the output power (planned value) of the solar cell device is less than the maximum power, the output power of the solar cell device may be increased from the planned value.
  • the output power of the storage battery device increases based on the load followability.
  • the output power (planned value) of the solar cell device is less than the maximum power, the output power of the solar cell device increases in preference to the output power of the storage battery device.
  • the output power of the fuel cell device increases due to a decrease in the output power of the storage battery device.
  • the output power of the fuel cell device increases as the output power of the storage battery device decreases in accordance with the load followability of the fuel cell device within a range not exceeding the planned value of the output power of the fuel cell device. As a result, the output power of the fuel cell device is returned to the planned value.
  • the local control device 360 increases the output power of the fuel cell device to the planned value by decreasing the output power of the storage battery device based on load followability and cost priority.
  • the local control device 360 controls each distributed power source based on the operation plan (plan control).
  • the operation plan is a plan for a predetermined period (for example, one day, one week, etc.), and is determined based on the predicted value of the power consumption of the load 350 and the cost priority of each distributed power source.
  • step S11 the local control device 360 determines whether or not a failure of each distributed power source has been detected. If the determination result is YES, the process of step S12 is performed, and if the determination result is NO, the process of step S11 is continued.
  • step S12 the local control device 360 determines whether or not the solar cell device has failed. If the determination result is YES, the process of step S14 is performed, and if the determination result is NO, the process of step S13 is performed.
  • step S13 the local control device 360 determines whether or not the fuel cell device has failed. If the determination result is YES, the process of step S15 is performed, and if the determination result is NO, the process of step S16 is performed.
  • step S14 the local control device 360 performs first failure control (see FIGS. 6 and 7).
  • the local control device 360 replaces the output power (planned value) of the solar cell device with the output power of the storage battery device and the fuel cell device during the PV failure period.
  • the local control device 360 increases the output power of the storage battery device based on the load followability during the PV failure period, and then sets the cost priority within the range allowed by the load followability of the fuel cell device. Based on this, the output power of the fuel cell device is increased within a range not exceeding the maximum output by decreasing the output power of the storage battery device.
  • step S15 the local control device 360 performs the second failure control (see FIGS. 8 and 9).
  • the local control device 360 substitutes the output power (planned value) of the fuel cell device with the output power of the storage battery device during the FC failure period.
  • the local control device 360 may increase the output power of the solar cell device within a range not exceeding the maximum output.
  • step S16 the local control device 360 performs the third failure control.
  • the local control device 360 substitutes the output power (planned value) of the storage battery device with the power supplied from the power system 110.
  • the local control device 360 may increase the output power of the solar cell device or the fuel cell device within a range not exceeding the maximum output. Good.
  • step S20 the local control device 360 determines whether recovery of each distributed power source has been detected. If the determination result is YES, the process of step S21 is performed, and if the determination result is NO, the detection waiting state for recovery of each distributed power source is maintained.
  • step S21 the local control device 360 determines whether or not the solar cell device has been restored. If the determination result is YES, the process of step S23 is performed, and if the determination result is NO, the process of step S22 is performed.
  • step S22 the local control device 360 determines whether or not the fuel cell device has been restored. If the determination result is YES, the process of step S24 is performed, and if the determination result is NO, the process of step S25 is performed.
  • step S23 the local control device 360 performs first recovery control.
  • the local control device 360 returns the output power of the solar cell device to the planned value.
  • the local control device 360 after returning the output power of the solar cell device to the level immediately before the PV failure period, the local control device 360 returns the output power of the fuel cell device to the planned value due to the decrease in the output power of the fuel cell device.
  • the output power of the solar cell device may be returned to the planned value.
  • step S24 the local control device 360 performs second recovery control.
  • the local control device 360 returns the output power of the fuel cell device to the planned value.
  • the local control device 360 returns the output power of the fuel cell device to the planned value by reducing the output power of the storage battery device based on the cost priority within the range allowed by the load followability of the fuel cell device. May be.
  • step S25 the local control device 360 performs third recovery control.
  • the local control device 360 returns the output power of the storage battery device to the planned value.
  • the local control device 360 may immediately return the output power of the storage battery device to the planned value.
  • the local control device 360 sets the normal distributed power supply based on the load followability with respect to the output that can be increased by a normal distributed power supply other than the distributed power supply in which the failure is detected per unit time. Control. According to such a configuration, the output power (planned value) of the distributed power source in which a failure is detected can be appropriately replaced with the output power of the normal distributed power source.
  • a solar cell device is exemplified as the first distributed power source.
  • the first distributed power supply may be a distributed power supply that uses natural energy such as wind power or geothermal heat.
  • the fuel cell device is exemplified as the second distributed power source.
  • the embodiment is not limited to this.
  • a storage battery device is illustrated as the third distributed power source.
  • the second distributed power supply and the third distributed power supply may be any distributed power supply that satisfies a relationship in which the load followability of the third distributed power supply is relatively better than the load followability of the second distributed power supply.
  • the second distributed power source and the third distributed power source may be any distributed power source that satisfies a relationship in which the cost priority of the third distributed power source is relatively lower than the cost priority of the second distributed power source.
  • the first distributed power source, the second distributed power source, and the third distributed power source are of different types in terms of cost priority and load followability.
  • the embodiment is not limited to this.
  • the types of the distributed power sources may be different in terms of specifications such as the rated output power of the distributed power source, the maintenance information of the distributed power source, and the control history of the distributed power source.
  • the power cost is different for each distributed power source.
  • the distributed power supply maintenance information may include information on the total operating time of the distributed power supply, distributed power life information, distributed power supply deterioration information, distributed power supply replacement information, distributed power supply repair information, and the like.
  • the control history of the distributed power supply may include distributed power supply stop information including information related to the normal stop or abnormal stop of the distributed power supply, distributed power supply start information, and the like. Note that the cost priority and the load followability may vary according to changes in the maintenance information of the distributed power source, the control history of the distributed power source, and the like.
  • the local control device 360 provided in the facility 300 may not necessarily be provided in the facility 300.
  • some of the functions of the local control device 360 may be provided by a cloud server provided on the Internet. That is, it may be considered that the local control device 360 includes a cloud server.
  • the local control device that controls each distributed power source is the local control device 360 (EMS)
  • EMS local control device 360
  • such local control devices may be PCS331 to PCS333.
  • the PCS 331 to PCS 333 may have a function of communicating with each other.
  • the first protocol is a protocol conforming to Open ADR2.0 and the second protocol is a protocol conforming to ECHONET Lite is illustrated.
  • the first protocol may be a protocol standardized as a protocol used for communication between the power management server 200 and the local control device 360.
  • the second protocol may be a protocol standardized as a protocol used in the facility 300.
  • the case where any one of the fuel cell device, the solar cell device, and the storage battery device fails specifically, the case where the output power of the distributed power source decreases without changing the power consumption of the load 350 is illustrated.
  • the present invention is not limited to this, and the power output by the distributed power supply may not change, and the power consumption of the load 350 may change rapidly. That is, a change may occur in the relative relationship between the power values of the output power of the distributed power source and the power consumption of the load 350.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

Ce procédé de commande d'alimentation électrique comprend : une étape A consistant à commander une première alimentation électrique dispersée ayant une première priorité en tant que priorité de coût, une deuxième alimentation électrique dispersée ayant une deuxième priorité inférieure à ladite première priorité en tant que ladite priorité de coût, et une troisième alimentation électrique dispersée ayant une troisième priorité inférieure à ladite deuxième priorité en tant que ladite priorité de coût, sur la base de ladite priorité de coût; une étape B consistant à détecter une défaillance de l'une desdites première, deuxième et troisième alimentations électriques dispersées; et une étape C consistant à commander, lorsque ladite défaillance a été détectée, une alimentation électrique dispersée normale qui est une alimentation électrique dispersée autre que l'alimentation électrique dispersée dans laquelle ladite défaillance a été détectée. Ladite étape C comprend une étape de commande de ladite alimentation électrique dispersée normale sur la base d'une capacité de suivi de charge liée à une sortie qui est incrémentée par unité de temps par ladite alimentation électrique dispersée normale.
PCT/JP2018/002558 2017-01-27 2018-01-26 Procédé de commande d'alimentation électrique, dispositif de commande d'alimentation électrique, et système de commande d'alimentation électrique WO2018139603A1 (fr)

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JP2021058027A (ja) * 2019-09-30 2021-04-08 大和ハウス工業株式会社 電力供給システム
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