JP2016092849A - Power supply system, start-up control device and method for controlling power supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To start up a fuel cell if there is no margin in the charging rate of a storage battery in the event of a blackout.SOLUTION: A power supply system according to the present invention includes: a power supply equipment 20, interconnected to a system, for controlling a storage battery 12; a power distribution board 31 for supplying power to a load 32; and a start-up control device 50, communicable with the power distribution board 31, for performing the start-up control of the power supply equipment 20. The start-up control device 50 transmits to the power distribution board 31 an instruction to parallel off at least a part of the load 32 connected to the power distribution board 31, when the power storage amount of the storage battery 12 lacks the power needed to operate the power supply equipment 20 at the suspension of the power supply equipment 20 during operation.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a power supply system, a start control device, and a control method for a power supply system.

  In recent years, from the viewpoints of improving energy security (security) independent of petroleum and making clean energy free of nitrogen oxides in the exhaust gas, there has been a shift to a power generation system using a fuel cell that generates electricity through the electrochemical reaction of gas. Expectations are rising. And many fuel cell electric power feeding systems using a fuel cell have been proposed. For example, Patent Literature 1 discloses a self-sustained operation support device that supports self-sustained operation of a fuel cell during a power failure.

JP 2013-51879 A

  By the way, in an electric power system in which the storage battery is centrally managed and operated in accordance with the fuel cell, even if the operation of the fuel cell is stopped due to a power failure of the system, there is a margin in the state of charge (SOC) of the storage battery. If there is, it is possible to start the fuel cell by discharging the storage battery and supplying power to the fuel cell.

  However, at the time of a power failure, when the power consumption of the load that is the target of supplying power by the power generated by the self-sustaining operation is large, depending on the charge rate of the storage battery, the storage battery only activates the power conditioner and the fuel cell. There was a risk that power could not be supplied.

  An object of the present invention made in view of such points is a power supply system, a start control device, and a power supply system capable of starting a fuel cell even when there is no allowance for the charge rate of the storage battery at the time of a power failure It is to provide a control method.

  In order to solve the above-described problems, a power supply system according to the present invention is connected to a system, and is capable of communicating with a power supply device that controls a storage battery, a distribution board that supplies power to a load, and the distribution board. An activation control device for performing activation control of the power supply device, wherein the activation control device is configured such that when the power supply device is stopped during operation, the storage amount of the storage battery is the power When the power required for the operation of the supply device is insufficient, an instruction to disconnect at least a part of the load connected to the distribution board is transmitted to the distribution board.

  Further, in the power supply system according to the present invention, the start control device acquires information on power consumption of the load from the distribution board during normal operation of the system, and the start control device When this occurs, it is preferable to determine which of the loads is to be disconnected from the distribution board based on the power consumption information.

  The power supply system according to the present invention may further include a power generation device that is controlled by the power supply device, wherein the activation control device operates the power supply device by disconnecting a part of the load. When the power generator resumes operation, it is preferable to charge the storage battery with the generated power of the power generator.

  In the power supply system according to the present invention, the start control device can operate the power supply device by disconnecting a part of the load, and when the power generator restarts the operation, It is preferable to reconnect a part of the load disconnected from the switchboard to the distribution board.

  Moreover, the power supply system which concerns on this invention WHEREIN: It is preferable that the power consumption of the control part with which the said starting control apparatus is provided is smaller than the power consumption of the control part with which the said power supply apparatus is provided.

  In the power supply system according to the present invention, the power generation device is preferably a fuel cell.

  Moreover, in order to solve the said subject, the starting control apparatus which concerns on this invention is an electric power supply provided with the power distribution apparatus linked to a grid | system, and controlling a storage battery and an electric power generating apparatus, and the distribution board which supplies electric power to load The system includes a communication unit that communicates with the distribution board and a control unit that performs start-up control of the power supply device, and the control unit is configured to store the storage battery when the power supply device stops during operation. When the amount of stored electricity is insufficient for the power required for the operation of the power supply device, an instruction to disconnect at least a part of the load connected to the distribution board is sent to the communication unit to the distribution board It is to be sent.

  In order to solve the above problems, a control method for a power supply system according to the present invention includes a power supply device that is connected to a system and controls a storage battery and a power generation device, a distribution board that supplies power to a load, A power supply system control method comprising a start control device capable of communicating with the distribution board and performing start control of the power supply device, wherein the start control device is stopped during operation of the power supply device When the amount of power stored in the storage battery is insufficient for the power required for the operation of the power supply device, an instruction to disconnect at least a part of the load connected to the distribution board is provided. Including a transmission step of transmitting to.

  According to the power supply system, the start control device, and the control method for the power supply system according to the present invention, it is possible to start the fuel cell even when there is no allowance for the charge rate of the storage battery during a power failure.

1 is a block diagram of a power supply system according to an embodiment of the present invention. It is a figure which shows a mode that load is disconnected from an electric power supply system. It is a figure which shows a mode that the driving | operation of a generator is restarted in an electric power supply system. It is a figure which shows a mode that a storage battery is charged with the electric power generating apparatus which restarted driving | operation. It is a flowchart which shows an example of operation | movement of the electric power supply system which concerns on one Embodiment of this invention.

  Hereinafter, embodiments according to the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a schematic configuration of a power supply system according to an embodiment of the present invention. The power supply system according to the present embodiment includes a solar cell 11, a storage battery 12, a power conditioner (power supply device) 20, a distribution board 31, a load 32, a power generation device 33, a current sensor 40, And an activation control device 50. The power supply system normally performs an interconnection operation with the grid, and supplies the load 32 with the power supplied from the grid and the power from each distributed power source (solar cell 11, storage battery 12, power generator 33). In addition, the power supply system performs a self-sustaining operation when there is no power supply from the system, such as at the time of a power failure, and supplies power from each distributed power source (solar cell 11, storage battery 12, power generation device 33) to the load 32. Moreover, when the charging rate of the storage battery 12 is below a predetermined threshold value, the storage battery 12 is charged with the generated power of the solar battery 11 and / or the power generation device 33. When the power supply system performs a self-sustained operation, each distributed power source (solar battery 11, storage battery 12, and power generation device 33) is disconnected from the system, and the power supply system performs a connected operation. Each distributed power supply (solar cell 11, storage battery 12, power generation device 33) is in parallel with the system. In FIG. 1, a solid line represents a flow of electric power, and a broken line represents a flow of a control signal or information to be communicated. In addition, the broken line which connects the control part 25 and another component is abbreviate | omitted from the viewpoint of the readability of drawing (for example, the broken line which connects the control part 25 and the interconnection relay 22 is abbreviate | omitted). .

  The solar cell 11 converts sunlight energy into DC power. The solar cell 11 is configured such that, for example, power generation units having photoelectric conversion cells are connected in a matrix and output a predetermined direct current (for example, 10 A). The type of solar cell 11 is not limited as long as it is capable of photoelectric conversion, such as a silicon-based polycrystalline solar cell, a silicon-based single crystal solar cell, or a thin-film solar cell such as CIGS.

  The storage battery 12 includes a storage battery such as a lithium ion battery or a nickel metal hydride battery. The storage battery 12 can supply electric power by discharging the charged electric power. In addition to the power supplied from the grid and the solar battery 11, the storage battery 12 can be charged with the power supplied from the power generation device 33 as described later.

  The power conditioner (power supply device) 20 is connected to the system and controls the solar cell 11, the storage battery 12, and the power generation device 33. The power conditioner 20 converts the direct current power supplied from the solar battery 11 and the storage battery 12 and the alternating current power supplied from the grid and the power generation device 33, and performs switching control between the grid operation and the independent operation. Is what you do. The power conditioner 20 includes a first inverter 21, a connection relay 22, a bypass relay 23, a self-supporting relay 24, a control unit 25, a second inverter 26, and DC / DC converters 27 to 28. Note that the bypass relay 23 may be configured to go out of the power conditioner 20.

  The first inverter 21 is a bidirectional inverter, and is supplied from the solar cell 11, the storage battery 12, and the power generation device 33 via a DC / DC converter 27, a DC / DC converter 28, and a second inverter 26, respectively. Power is converted into AC power, and AC power supplied from the grid is converted into DC power.

  The interconnection relay 22 is configured to switch between on / off states based on a control signal from the control unit 25. The interconnection relay 22 switches on / off the connection between the first inverter 21 and the system. The interconnection relay 22 is controlled to be turned off at the time of a system power failure so as to disconnect the power conditioner 20 from the system, and to be turned on at the time of system interconnection.

  The bypass relay 23 is configured to switch the on / off state based on a control signal from the control unit 25. The bypass relay 23 switches on / off the connection between the system and the distribution board 31. That is, the bypass relay 23 switches on / off the connection between the system and the power generation device 33. The bypass relay 23 is controlled to be turned off at the time of a system power failure, and is controlled to be turned on at the time of grid connection.

  The self-supporting relay 24 is configured to switch the on / off state based on a control signal from the control unit 25. The self-supporting relay 24 switches connection / disconnection between the first inverter 21 and the distribution board 31. That is, the self-supporting relay 24 switches connection / disconnection between the first inverter 21 and the power generation device 33. The self-supporting relay 24 is controlled to be turned on at the time of a system power failure and is controlled to be turned off at the time of grid connection.

  The control part 25 is comprised, for example with a microcomputer, and based on the state of a system | strain etc., the 1st inverter 21, the interconnection relay 22, the bypass relay 23, the independent relay 24, the 2nd inverter 26, DC / DC converters 27-28. The operation of each part is controlled. Details of the control by the control unit 25 will be described later.

  The second inverter 26 is a bidirectional inverter. The second inverter 26 converts AC power generated by the power generation device 33 into DC power and supplies the DC power to the first inverter 21. Further, the second inverter 26 converts AC power generated by the power generation device 33 into DC power, and supplies DC power to the storage battery 12 via the DC / DC converter 28. The second inverter 26 converts the DC power supplied from the storage battery 12 via the DC / DC converter 28 into AC power and supplies the AC power to the distribution board 31.

  Note that the second inverter 26 may be provided outside the power conditioner 20. In this case, the second inverter 26 includes an input terminal that receives an input of DC power from the external second inverter.

  The DC / DC converters 27 to 28 DC / DC convert the input DC voltage into a predetermined DC voltage.

  The DC / DC converter 27 boosts or steps down the DC voltage from the solar cell 11 to a certain voltage and supplies it to the first inverter 21.

  The DC / DC converter 28 boosts or steps down the DC voltage from the storage battery 12 to a certain voltage and supplies it to the first inverter 21. The DC / DC converter 28 is a bidirectional DC / DC converter, and boosts or steps down the DC voltage from the first inverter 21, the DC / DC converter 27, or the second inverter 26 to a constant voltage. To supply.

  The distribution board 31 branches the power supplied from the system during the grid operation to a plurality of branches, distributes the power to the load 32, and supplies the power to the load 32. In addition, the distribution board 31 branches the power supplied from the distributed power source (solar cell 11, storage battery 12, power generation device 33) to a plurality of branches, distributes it to the load 32, and supplies power to the load 32. .

  The distribution board 31 includes a relay that can disconnect the connection with the load 32 for each branch, and disconnects the designated load 32 in accordance with an instruction transmitted from the activation control device 50. Let

  The distribution board 31 detects the power consumption of the load 32 for each branch at a predetermined timing. The predetermined timing may be a regular timing or an irregular timing. Information on the power consumption of the load 32 for each branch detected by the distribution board 31 is acquired by the activation control device 50.

  The load 32 is a load that operates at a single-phase AC 100V or 200V used at home. Electricity is not supplied to the load 32 disconnected from the distribution board 31, and the operation is stopped. Examples of the load 32 include household appliances such as a dryer, a home game machine or an audio system for listening to music, as well as electrical appliances such as a refrigerator, an emergency light, a hot water supply system or a home network server which should avoid power outages as much as possible. For example, load. The number of loads 32 is arbitrary.

  The power generation device 33 is configured by, for example, a fuel cell. A fuel cell includes a cell that generates direct-current power through a chemical reaction with oxygen in the air using hydrogen, an inverter that converts the generated direct-current power into 100V or 200V AC power, and other accessories. Prepare. Here, the fuel cell as the power generation device 33 is a system that enables supply of AC power to the load 32 without using the power conditioner 20, and is always designed to be connected to the power conditioner 20. The system may be a versatile system.

  The power generation device 33 performs power generation while the corresponding current sensor 40 detects a forward power flow (current in the power purchase direction). During power generation, a load following operation that follows the power consumption of the load 32 or a predetermined rated power value is performed. Perform rated operation with. The tracking range during load following operation is, for example, 200 to 700 W, and the rated power value during rated operation is, for example, 700 W. The power generator 33 performs a load following operation (for example, 200 to 700 W) that follows the power consumption of the load 32 during the interconnection operation, and performs a load following operation or a rated operation based on the rated power value during the independent operation. Also good.

  The current sensor 40 detects a current flowing into the distribution board 31. The current sensor 40 is configured as a CT (Current Transformer), for example. The power generation device 33 starts operating when a forward flow is detected by the current sensor 40. Moreover, the electric power generation apparatus 33 stops operation | movement, when the current sensor 40 cannot detect a forward power flow.

  The activation control device 50 acquires information on the state of charge from the storage battery 12 and information on the power necessary for activation of the power conditioner 20 from the power conditioner 20, and controls the storage battery 12, the power conditioner 20 and the distribution board 31. . The start-up control device 50 increases or decreases the DC voltage from the storage battery 12 to a certain voltage and supplies it to the distribution board 31 during the independent operation. The activation control device 50 can communicate with the distribution board 31. Communication between the activation control device 50 and the distribution board 31 may be wired communication or wireless communication. The activation control device 50 includes a DC / DC converter 51 and a control unit 52.

  The DC / DC converter 51 increases or decreases the DC voltage from the storage battery 12 to a certain voltage and supplies it to the distribution board 31 during a system power failure. In the present embodiment, a configuration in which the start control device 50 includes the DC / DC converter 51 is shown, but the start control device 50 has a configuration including a DC / AC converter instead of the DC / DC converter 51. There may be. In this case, the activation control device 50 supplies AC power to the distribution board 31. Whether to use a DC / DC converter or a DC / AC converter may be determined according to the specifications of the distribution board 31.

  The control unit 52 is configured by a microcomputer, for example. The control unit 52 preferably has a configuration that consumes less power than the control unit 25 of the power conditioner 20.

  The control unit 52 acquires information on the power consumption of the load 32 for each branch from the distribution board 31 during normal operation when the system is not interrupted.

  When the charging rate (storage amount) of the storage battery 12 is equal to or less than a value necessary for operating the power conditioner 20 to supply power to the power generation device 33 at the time of a system power failure, the control unit 52 Among these, if the power supply to which load 32 is stopped, the storage battery 12 determines whether the power conditioner 20 can be operated. At this time, the control unit 52 uses the information on the power consumption of the load 32 for each branch of the distribution board 31 acquired during the normal operation.

  When the control unit 52 determines which load 32 is to be disconnected from the distribution board 31, the control unit 52 transmits information on a branch to be disconnected to the distribution board 31 and determines that the load 32 is to be disconnected. Are disconnected from the distribution board 31.

  For example, if the controller 52 determines that the power conditioner 20 can be activated if the power supplied to the 100 W load is reduced, the control unit 52 determines the load 32 that can reduce power consumption by at least 100 W as a load to be disconnected. The distribution board 31 is instructed to disconnect the load.

  Next, with reference to FIG. 2 to FIG. 4, an operation of resuming the operation of the power generation device 33 by the control by the activation control device 50 at the time of a system power failure will be described. For example, when the system is interrupted at night, power cannot be supplied from the solar cell 11 to the power generation device 33. Moreover, if the charging rate of the storage battery 12 is insufficient and the power conditioner 20 cannot be started, it is not possible to supply power from the storage battery 12 to the power generation device 33. The operation shown in FIGS. 2 to 4 explains the control that enables the power generation device 33 to be activated even in such a case.

  FIG. 2 shows a state in which the distribution board 31 disconnects some of the loads 32 and stops supplying power to some of the loads 32 under the control of the activation control device 50.

  As shown in FIG. 2, the power conditioner 20 cannot be started in a configuration in which the charging rate of the storage battery 12 is not sufficient at the time of a system power failure and power is supplied to all currently connected loads 32. When the determination is made, the control unit 52 can determine which load 32 is disconnected based on the information on the power consumption of the load 32 for each branch of the distribution board 31 acquired during the normal operation. Is transmitted to the distribution board 31 to determine whether the selected load 32 can be disconnected.

  In FIG. 3, since the power conditioner 20 can be operated by the storage battery 12 by disconnecting a part of the load 32, the activation control device 50 starts discharging the storage battery 12, and the power conditioner 20 shows the activated state. Thick line arrows shown in FIG. 3 indicate power supply.

  As shown in FIG. 3, when the power conditioner 20 is activated, the discharge power of the storage battery 12 is supplied to the distribution board 31 by the power conditioner 20. At this time, since the current sensor 40 detects a forward power flow, the power generator 33 resumes operation.

  FIG. 4 shows a state in which the power generation device 33 has resumed operation and has become capable of independent operation. When the power generator 33 resumes operation, the power generated by the power generator 33 is supplied from the distribution board 31 to the power generator 33 via the second inverter 26 and the first inverter 21. Thus, once the operation is resumed, the power generation device 33 can carry out a self-sustained operation by causing a forward flow to flow through the current sensor 40 with its own generated power. In addition, when there is still a margin even when power is supplied to the load 32 by the power generated by the power generation device 33, the storage battery 12 can be charged by the power generated by the power generation device 33 as shown in FIG. Further, if there is a margin in the generated power of the power generation device 33, the activation control device 50 may reconnect the load 32 that has been disconnected from the distribution board 31.

  Next, the operation of the power supply system according to the embodiment of the present invention will be described with reference to the flowchart shown in FIG. In addition, the flowchart shown in FIG. 5 shall be started from the state where the system has a power failure.

  When the system is interrupted, the control unit 25 of the power conditioner 20 stops the first inverter 21 (step S101). When the first inverter 21 is stopped, the current sensor 40 no longer detects a forward power flow, so the power generation device 33 stops operating (step S102).

  The control unit 52 of the activation control device 50 determines whether or not the charging rate of the storage battery 12 is larger than the electric power necessary for activation of the first inverter 21 (step S103).

  When it determines with the charge rate of the storage battery 12 being larger than the electric power required for starting the 1st inverter 21 in step S103 (Yes of step S103), the control part 52 is the electric power to the power conditioner 20 in the storage battery 12. Supply is continued (step S104).

  In step S103, when it determines with the charging rate of the storage battery 12 being below the electric power required for starting of the 1st inverter 21 (No of step S103), the control part 52 is from the storage battery 12 to the power conditioner 20. The supply of DC power is stopped (step S105).

  The control unit 52 calculates the amount of electric power that is insufficient to activate the first inverter 21 (step S106). The control unit 52 determines which load 32 should be disconnected in order to eliminate the insufficient power, and issues an instruction to disconnect the load 32 that has been determined to be disconnected. And the selected load 32 is disconnected from the distribution board 31 (step S107).

  The controller 52 controls the storage battery 12 to start discharging, and restarts the supply of power from the storage battery 12 to the power conditioner 20 (step S108).

  The power conditioner 20 resumes operation by continuing the power supply to the power conditioner 20 in step S104 or restarting the power supply to the power conditioner 20 in step S108 (step S109).

  When the power conditioner 20 is activated, a forward flow flows through the current sensor 40, and the power generator 33 resumes operation. When the power generation device 33 resumes operation, the power generated by the power generation device 33 can be supplied to the power generation device 33 itself via the second inverter 26, the first inverter 21, and the distribution board 31. That is, the power generator 33 can be operated independently (step S110).

  The control unit 52 determines whether or not the power consumption of the load 32 is smaller than the power generation power of the power generation device 33 (step S111).

  When it determines with the power consumption of the load 32 being more than the electric power generation power of the electric power generating apparatus 33 in step S111 (No of step S111), the control part 52 continues the discharge of the storage battery 12 (step S112).

  When it is determined in step S111 that the power consumption of the load 32 is smaller than the power generation power of the power generation device 33 (Yes in step S111), the control unit 52 determines that the power generation power of the power generation device 33 is sufficient. Is stopped, and the storage battery 12 is charged with the generated power of the power generation device 33 (step S113).

  As described above, according to the present embodiment, when the system has a power failure, when the charging rate of the storage battery 12 is equal to or less than a value necessary for starting the power conditioner 20, the start control device 50 starts from the distribution board 31. An instruction to disconnect a part of the load 32 is transmitted to the distribution board 31. Thereby, even when there is no allowance for the charging rate of the storage battery 12 during a system power failure, the power generation device 33 (fuel cell) can be activated. As a result, even if the charging rate of the storage battery 12 is low, the operation of the power generation device 33 can be resumed at the time of a power failure, so the lower limit of the discharge range of the storage battery 12 can be lowered, and the storage battery 12 can be used effectively. Will be able to.

  Further, according to the present embodiment, the startup control device 50 acquires the power consumption information of the load 32 from the distribution board 31 during the normal operation of the system, and when the power failure occurs on the basis of the power consumption information 2, when the charging rate of the storage battery 12 is equal to or lower than the value necessary for the operation of the power conditioner 20, which load among the loads 32 is determined to be disconnected from the distribution board 31. As a result, the activation control device 50 can disconnect the load 32 necessary and sufficient to activate the power conditioner 20.

  Further, according to the present embodiment, the activation control device 50 can operate the power conditioner 20 by disconnecting a part of the load 32, and when the power generation device 33 resumes operation, The storage battery 12 can be charged with the generated power. Thereby, the electric power of the storage battery 12 discharged for restarting the operation of the power generation device 33 can be recovered by charging.

  Further, according to the present embodiment, the start control device 50 can operate the power conditioner 20 by disconnecting a part of the load 32, and when the power generation device 33 resumes operation, the distribution board 31. A part of the load 32 that has been disconnected can be reconnected to the distribution board 31. Thereby, the load 32 used before the power failure of the system can be used again.

  Moreover, according to this embodiment, the power consumption of the control part 52 with which the starting control apparatus 50 is provided is smaller than the power consumption of the control part 25 with which the power conditioner 20 is provided. Thereby, even if it is a case where the electrical storage rate of the storage battery 12 is small, the starting control apparatus 50 can control the distribution board 31 with little power consumption.

  Although the present invention has been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various modifications and corrections based on the present disclosure. Therefore, it should be noted that these variations and modifications are included in the scope of the present invention. For example, the functions included in each component, each step, etc. can be rearranged so that there is no logical contradiction, and multiple components, steps, etc. can be combined or divided into one It is.

  In the present embodiment, the activation control device 50 has been described as a configuration independent of the storage battery 12, but the activation control device 50 may be included in the storage battery 12.

  Moreover, although the solar cell 11, the storage battery 12, and the electric power generating apparatus 33 showed the example linked to the grid | system as distributed power supply in this embodiment, it is not limited to this structure. For example, the solar cell 11 may be configured not to be connected to the system.

  In this embodiment, the activation control device 50 transmits an instruction to the distribution board 31 to disconnect the load 32 from the distribution board 31, but instead, the activation control device 50 and the load 32. May directly communicate with each other by wire or wirelessly, and the activation control device 50 may stop the operation of the load 32 or may be shifted to a mode with low power consumption.

11 Solar battery 12 Storage battery 20 Power conditioner (power supply equipment)
DESCRIPTION OF SYMBOLS 21 1st inverter 22 Interconnection relay 23 Bypass relay 24 Self-supporting relay 25 Control part 26 2nd inverter 27, 28 DC / DC converter 31 Distribution board 32 Load 33 Electric power generation apparatus 40 Current sensor 50 Starting control apparatus 51 DC / DC converter 52 Control unit

Claims (8)

A power supply device that is connected to the grid and controls the storage battery;
A distribution board that supplies power to the load;
A power supply system comprising a start control device capable of communicating with the distribution board and performing start control of the power supply device,
When the power supply device is stopped during operation, the activation control device is connected to the distribution board when the storage amount of the storage battery is insufficient for the power required for the operation of the power supply device. A power supply system, wherein an instruction to disconnect at least a part of a load is transmitted to the distribution board. The power supply system according to claim 1,
The startup control device obtains information on power consumption of the load from the distribution board during normal operation of the system,
The start-up control device determines which load among the loads to be disconnected from the distribution board based on the power consumption information when a power failure occurs in the system. Power supply system. The power supply system according to claim 1 or 2,
The power supply device further includes a power generation device that controls,
The activation control device can operate the power supply device by disconnecting a part of the load. When the power generation device resumes operation, the activation control device charges the storage battery with the generated power of the power generation device. Power supply system characterized by   The power supply system according to any one of claims 1 to 3, wherein the activation control device enables operation of the power supply device by disconnecting a part of the load, and the power generation device When the operation is resumed, a part of the load disconnected from the distribution board is reconnected to the distribution board.   5. The power supply system according to claim 1, wherein power consumption of a control unit included in the activation control device is smaller than power consumption of a control unit included in the power supply device. Power supply system.   5. The power supply system according to claim 3, wherein the power generation device is a fuel cell. 6. In a power supply system that is connected to a grid and includes a power supply device that controls a storage battery and a power generation device, and a distribution board that supplies power to a load.
A communication unit for communicating with the distribution board;
A control unit for performing start-up control of the power supply device,
The control unit, when the power supply device is stopped during operation, when the storage amount of the storage battery is insufficient for the power required for the operation of the power supply device, the load connected to the distribution board An activation control device that causes the distribution board to transmit an instruction to disconnect at least a part of the distribution panel to the communication unit. A power supply device that is connected to the grid and controls the storage battery and the power generation device, a distribution board that supplies power to the load, and a start control device that is communicable with the distribution board and performs start control of the power supply device A method of controlling a power supply system comprising:
When the power supply device stops during operation, the activation control device is connected to the distribution board when the amount of power stored in the storage battery is insufficient for the power required for the operation of the power supply device. A control method including a transmission step of transmitting an instruction to disconnect at least a part of a load to the distribution board.

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