Control System

Abstract

Make effective use of a large number of storage batteries in the capacity market. [Solution] A control system equipped with a processor, which acquires information regarding an activation command power source that specifies a requested time period, which is the period during which the contribution of power is requested, and a requested power amount, which is the amount of power to be reverse-flowed during the requested time period; estimates the amount of power supply that each of multiple storage batteries can supply during the requested time period, and the self-consumption amount, which is the amount of power that each of the multiple storage batteries will consume itself during the requested time period; averages the amount obtained by subtracting the self-consumption amount from the supply amount over the requested time period; and, when contributing power from multiple storage batteries, if any one storage battery exceeds its rated output, causes the storage battery that exceeds the rated output to contribute power at an output below the rated output, thereby increasing the amount of power contributed by any other storage battery among the multiple storage batteries.

Description

[Technical Field]

[0001] The present invention relates to a control system. [Background technology]

[0002] Patent Document 1 describes a power control device capable of performing power control using discharge power from a power storage means, and includes: a setting unit that sets a ratio for a plurality of power control modes; a target calculation unit that calculates a target transmission / reception power amount that is a target for actually performing power control in accordance with the ratio from mode transmission / reception power amounts that are targets for each of the plurality of power control modes and vary depending on the day; a power control processing unit that performs power control in accordance with the target transmission / reception power amount; a target charge amount calculation unit that calculates a target charge amount that is a target value for the charge amount of the power storage means and is a target value for the charge amount of the power storage means when actually performing power control from mode charge amounts that are a target value for the charge amount of the power storage means and are set for each of the plurality of power control modes in accordance with the ratio; and a charge control unit that charges the power storage means based on the target charge amount. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-211556 Summary of the Invention [Problem to be solved by the invention]

[0004] Capacity markets have been established with the aim of ensuring the power supply capacity of society as a whole. When using home storage batteries in a capacity market, a large number of storage batteries are aggregated and bid in the activation command power source category. Then, by providing a specified supply capacity in response to an activation request, compensation can be obtained. When home storage batteries provide a specified supply capacity in response to an activation request, this is usually achieved by aggregating more than 1,000 storage batteries. Home storage batteries are first used for the consumer's own demand, and any power exceeding the consumer's demand is reverse-flowed from the storage batteries to the grid power source. In order to optimize home storage batteries, it is necessary to consider factors such as the power demand during the activation time period, and further, overall optimization is required to mutually compensate for demand fluctuations at each consumer. An object of the present invention is to effectively utilize a large number of storage batteries in the capacity market. [Means for solving the problem]

[0005] A control system to which the present invention is applicable includes a processor, which acquires information regarding an activation command power source that defines a requested time period, which is a period during which the contribution of power is requested, and a requested power amount, which is the amount of power to be reverse-flowed during the requested time period; estimates the amount of power supply that each of a plurality of storage batteries can supply during the requested time period, and the self-consumption amount, which is the amount of power that each of the plurality of storage batteries will consume itself during the requested time period; averages the amount obtained by subtracting the self-consumption amount from the supply amount over the requested time period; and, when the plurality of storage batteries contribute power, if any one of the storage batteries exceeds its rated output, causes the storage battery that exceeds the rated output to contribute power at an output below the rated output, thereby increasing the amount of power contributed by any other storage battery among the plurality of storage batteries. Here, when the information about the activation command power source is acquired, the storage battery may be charged. In addition, groups of storage batteries may be created from the plurality of storage batteries based on at least one of the charge capacity of the storage batteries and the rated output of the storage batteries, and when increasing the amount of electricity contributed by any of the other storage batteries among the plurality of storage batteries, the amount of electricity contributed by each group of storage batteries may be increased. The groups of storage batteries may be created for each model of storage battery. In addition, the requested time period may be divided into multiple time periods, and if one of the storage batteries exceeds its rated output during a divided time period, the amount of electricity contributed by that storage battery may be reduced during the time period when the rated output is exceeded, and the amount of electricity contributed by that storage battery may be increased during the time period when the rated output is not exceeded. [Effects of the Invention]

[0006] According to the present invention, a large number of storage batteries can be effectively utilized in the capacity market. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a schematic diagram of a control system according to an embodiment of the present invention. [Figure 2] FIG. 2 illustrates an example of a hardware configuration of a management server. [Figure 3] FIG. 2 illustrates an example of a functional configuration of a management server. [Figure 4] 10 is a flowchart showing an example of the flow of processing by a management server that has received an activation command. [Figure 5] 10 is a flowchart illustrating an example of a procedure for creating a plan. [Figure 6] FIG. 10 is a diagram showing an example of a discharge plan by a management server. DETAILED DESCRIPTION OF THE INVENTION

[0008] [Virtual power generation system] FIG. 1 is a schematic diagram of a control system 1 according to the present embodiment.

[0009] In the control system 1 according to this embodiment, a management server 10 and n HEMSs (Home Energy Management Systems) 21-1 to 21-n (n is an integer equal to or greater than 1) are connected via a network 90. The network 90 is, for example, a LAN (Local Area Network) or the Internet. When there is no need to explain each of the HEMSs 21-1 to 21-n individually, they are collectively referred to as the HEMS 21. Storage batteries 20-1 to 20-n are connected to the HEMSs 21-1 to 21-n, respectively. When there is no need to explain each of the storage batteries 20-1 to 20-n individually, they will be collectively referred to as storage battery 20. In the control system 1, a management server 10 remotely controls storage batteries 20 via a HEMS 21. The control system 1 functions as a virtual power plant (VPP) that behaves as if it were a single power plant by integrating the demand and supply of multiple storage batteries 20.

[0010] The control system 1 bids in the capacity market for the classification of activation command power source, provides a predetermined supply capacity in response to a power generation request, and receives payment. Here, the capacity market is a market in which future power supply capacity [kW] is traded, rather than the amount of power [kWh] traded in the wholesale power market, for example.

[0011] The management server 10 receives an activation command from the power market that can utilize the virtual power plant. Based on the activation command, the management server 10 controls the multiple storage batteries 20 to supply power. Here, the activation command is command information requesting the contribution of electric power, which includes a response time from receipt of the activation command until the contribution of electric power, a requested amount of electric power, and a duration during which the requested amount of electric power is continuously contributed. The requested amount of electric power is an example of a requested amount of electric power, and the duration is an example of a requested duration. In this embodiment, the length of the response time is assumed to be 3 hours, and the length of the duration time period is assumed to be 3 hours. However, the lengths of the response time and the duration time period are not limited to these.

[0012] The storage battery 20 is a distributed resource installed at a consumer facility and used by the consumer. Here, a home is an example of the consumer facility, but it may also be an office or factory that consumes electricity. The storage battery 20 is used as a power supply source for each home. The storage battery 20 is also connected to a Home Energy Management System (HEMS) 21 that controls energy such as electricity used in the home.

[0013] The HEMS 21 controls the charging and discharging of the storage battery 20. The HEMS 21 also controls the charging and discharging of the storage battery 20 in accordance with information acquired from the management server 10. The HEMS 21 controls the storage battery 20 to store, for example, solar power and as a backup power source in the event of a power outage. The HEMS 21 may also control the storage battery 20 in response to fluctuations in electricity rates due to dynamic pricing in order to reduce household electricity rates.

[0014] FIG. 2 is a diagram illustrating an example of the hardware configuration of the management server 10. As shown in FIG. The management server 10 is composed of a computer device such as a desktop PC or a notebook PC. The management server 10 includes a CPU (Central Processing Unit) 101 which is an example of a processor for controlling the entire device, and a RAM (Random Access Memory) 102 used as a working area during calculations. Further, the management server 10 includes a ROM 103 used for storing programs and various setting data, and a storage device 104 which is a storage device such as an HDD (Hard Disk Drive) or a semiconductor memory for storing various information of the storage battery 20. Furthermore, the management server 10 includes a communication interface (communication I / F) 105, a display device 106, and an input device 107. The communication interface (communication I / F) 105 transmits and receives data via the network 90. The display device 106 is a liquid crystal display or the like that displays images, text information, etc. to the user. The input device 107 is a keyboard, a pointing device, a touch panel, etc. that receives input operations from the user.

[0015] FIG. 3 is a diagram showing an example of the functional configuration of the management server 10. The management server 10 includes an information acquisition unit 110, a dischargeable amount prediction unit 120, a demand prediction unit 130, a plan generation unit 140, and a remote control unit 150.

[0016] The information acquisition unit 110 acquires an activation command from the power market via the network 90. Also, the information acquisition unit 110 acquires the charge amount from the storage battery 20 via the network 90. Further, information on the charge capacity and rated output of the storage battery 20 is acquired.

[0017] The dischargeable amount prediction unit 120 predicts the amount of electric power that can be discharged by each storage battery 20 during the continuous time period included in the activation command. Hereinafter, the amount of electric power that can be discharged by the storage battery 20 during the continuous time period may be referred to as the dischargeable amount of the storage battery 20. The dischargeable amount of the storage battery 20 is the smaller of the charge amount [kWh] at the activation time, which is the first time of the duration time period, or the amount of power [kWh] obtained by multiplying the rated output [kW] of the storage battery 20 by 3 [h (hours)]. The amount of power [kWh] obtained by multiplying the rated output [kW] of the storage battery 20 by 3 [h (hours)] is the maximum amount of power [kWh] that the storage battery 20 can discharge in 3 hours, which is the length of the duration time period. Furthermore, when the storage battery 20 is used as an emergency power supply, the amount of emergency power [kWh] to be stored for use in an emergency is subtracted from the amount of power [kWh] at the activation time.

[0018] The charge amount of the storage battery 20 at the activation time can be predicted, for example, by using the history of the charge amount of each storage battery 20. More specifically, for example, the charge amount at the activation time can be predicted as the charge amount at the activation time based on the past charge amount at the same time as the activation time. Furthermore, in preparation for the contribution of power, the storage battery 20 can be charged between the time of receiving the activation command and the time of providing power. For example, in the case of the storage battery 20 being fully charged to satisfy the charge capacity between the time of receiving the activation command and the time of providing power, the charge capacity of the storage battery 20 can be predicted as the charge amount at the activation time. The sum of the dischargeable amounts of the storage batteries 20 may be referred to as the VPP dischargeable amount.

[0019] The demand forecasting unit 130 forecasts the amount of private consumption of the storage battery 20 during the duration time period. As a method for predicting the self-consumption of the storage battery 20, for example, a history of past self-consumption amounts can be obtained from the HEMS 21 that controls the storage battery 20, and the self-consumption amount can be predicted using the past history of self-consumption. More specifically, for example, from the history of past self-consumption amounts, the average of the self-consumption amounts for the same time period as the continuing time period can be predicted as the self-consumption amount for the continuing time period. Furthermore, for example, a weather forecast for the continuing time period can be further used to obtain a history of temperatures close to the temperature for the continuing time period from the history of past self-consumption amounts, and the self-consumption amount in that history can be predicted as the self-consumption amount for the continuing time period. Furthermore, the demand for the storage battery 20 may be predicted using statistical information on the amount of electricity consumed by each household in the area where the storage battery 20 is located.

[0020] When receiving an activation command from the electricity market, the plan generation unit 140 generates a plan for the amount of power to be discharged from each storage battery 20 during a continuous time period. In this embodiment, the continuous time period of three hours is divided into six periods, and the amount of power to be discharged from each storage battery 20 is planned for each 30-minute period. Hereinafter, these 30-minute periods may be referred to as "frames."

[0021] The plan generating unit 140 includes a VPP discharge planning unit 141 and a storage battery discharge planning unit 142. The plan generating unit 140 first plans the amount to be discharged for each frame as a virtual power plant, that is, for the entire control system 1, and then creates a discharge plan for the storage battery 20 so that the amount is discharged according to the plan. In this embodiment, the discharge plan for the storage battery 20 is created so that the entire dischargeable capacity of the storage battery 20 is used up. The procedure for creating a discharge plan for the storage battery 20 will be described later.

[0022] Based on the created plan, the remote control unit 150 transmits control information for controlling the storage battery 20 to the HEMS 21. In this embodiment, the remote control is performed via the HEMS 21, but the remote control unit 150 may communicate with the storage battery 20 and directly control the storage battery 20.

[0023] FIG. 4 is a flowchart showing an example of the flow of processing by the management server 10 that has received an activation command. When an activation command is transmitted from the electricity market (YES in step 401), the management server 10 acquires the transmitted activation command and stores the contents of the activation command in the storage device 14 (see FIG. 2) (step 402). On the other hand, when an activation command is not transmitted from the electricity market (NO in step 401), the management server 10 repeats the determination process of step 401 until an activation command is transmitted.

[0024] When the start command is acquired, the remote control unit 150 remotely operates each storage battery 20 to start charging (step 403). This charging continues until the start time. Note that the charging may be terminated when the charge amount of the storage battery 20 reaches a predetermined amount or more.

[0025] The dischargeable amount prediction unit 120 predicts the dischargeable amount for each storage battery 20 (step 404). The demand prediction unit 130 predicts the self-consumption amount for each storage battery 20 (step 405).

[0026] The VPP discharge planning unit 141 creates a plan for the VPP discharge amount for each time slot (step 406). Here, the VPP discharge amount is the amount of electric power discharged by the VPP when the control system 1 functions as a virtual power plant (VPP). The procedure for creating the plan for the VPP discharge amount will be described in detail with reference to FIG. 5.

[0027] The storage battery discharge planning unit 142 creates a plan for the discharge amount for each time slot for each storage battery 20 (step 407). The procedure for creating the plan for the discharge amount for each time slot for each storage battery 20 will be described in detail with reference to FIG. 5.

[0028] It is determined whether or not the start time has arrived (step 408). If the start time has not arrived (NO in step 408), the determination process in step 411 is repeated until the start time. On the other hand, if the start time has arrived (YES in step 408), the remote control unit 150 controls the storage battery 20 based on the plan for the discharge amount for each time slot for each storage battery 20 (step 409), and the process ends.

[0029] FIG. 5 is a flowchart showing an example of the procedure for creating a plan. The VPP discharge planning unit 141 calculates the VPP dischargeable amount by summing the dischargeable amounts for each storage battery 20 (step 501). Next, the VPP discharge planning unit 141 calculates the VPP demand amount by summing the self-consumption amounts for each storage battery 20 (step 502). Next, the VPP discharge planning unit 141 calculates the VPP supply amount (step 503). Here, the VPP supply amount is the amount of power supplied to the market when the control system 1 functions as a virtual power plant (VPP). Specifically, it is the total amount of power that the multiple storage batteries 20 cause to flow backward during the duration of the period. The VPP supply amount can be calculated by subtracting the VPP demand amount from the VPP dischargeable amount.

[0030] Next, the VPP discharge planning unit 141 divides the VPP supply amount into six (step 504). Here, the amount obtained by dividing the VPP demand amount into six is referred to as a frame-by-frame VPP supply amount.

[0031] Next, the VPP discharge planning unit 141 calculates the frame-by-frame discharge planned amount (step 505). Here, the frame-by-frame discharge planned amount is planned as the amount of power that the VPP should discharge for each frame when the control system 1 functions as a virtual power plant (VPP). In this embodiment, for each frame, the frame-by-frame VPP supply amount is added to the demand amount predicted by the demand forecasting unit 130. The demand amount predicted by the demand forecasting unit 130 plus the frame-by-frame VPP supply amount is referred to as the frame-by-frame discharge planned amount. When the control system 1 functions as a virtual power plant (VPP), it is required to discharge the storage batteries 20 so that the total amount of discharge for each frame satisfies the frame-by-frame discharge plan amount.

[0032] Next, the battery discharge planning unit 142 calculates the discharge rate for each frame (step 506). Here, the discharge rate for each frame is the ratio of the planned discharge amount for each frame to the dischargeable amount of VPP. That is, for each frame, the discharge rate for each frame is calculated as follows: Discharge rate for each frame = Discharge planned amount for each frame / Dischargeable amount of VPP.

[0033] The battery discharge planning unit 142 multiplies the dischargeable amount of each battery 20 by the frame-by-frame discharge rate of each battery 20 to set the discharge amount that each battery 20 will discharge for each frame (step 507). Specifically, discharge amount = dischargeable amount of each battery × frame-by-frame discharge rate.

[0034] Next, the battery discharge planning unit 142 calculates the frame-by-frame discharge rate by dividing the discharge amount by the rated output (step 508). Specifically, the frame-by-frame discharge rate = discharge amount ÷ rated output.

[0035] Here, the battery discharge planning unit 142 determines whether the frame-by-frame discharge rate exceeds 100% (step 509). If the frame-specific discharge rate exceeds 100% (YES in step 509), the battery discharge planning unit 142 corrects the frame-specific discharge rate that exceeds 100% to 100% (step 510). Correcting the frame-specific discharge rate to 100% means correcting it so that it discharges at the rated output, which results in an insufficient discharge amount as VPP for that frame.

[0036] The battery discharge planning unit 142 calculates the amount of power that is insufficient (step 511). That is, the amount of power that is insufficient for each frame=(discharge rate for each frame before correction−100)×dischargeable amount is calculated.

[0037] Next, the battery discharge planning unit 142 performs a correction to compensate for the insufficient amount of power (step 512). Specifically, the charging rate [%] of the battery is increased in order from the smallest until each insufficient amount of power becomes zero, and the discharge rate of the frame with no insufficient dischargeable amount is decreased by the amount of the increase in the discharge rate. This is repeated until the insufficient discharge amount of all frames becomes zero, and the discharge amount setting is changed. Then, a discharge plan for the storage battery 20 is created based on the changed settings (step 513), and the process ends.

[0038] If the frame-by-frame discharge rate does not exceed 100 in step 509 (YES in step 509), a discharge plan for the storage battery 20 is created with the discharge amount set as is (step 513), and the process ends.

[0039] FIG. 6 is a diagram showing an example of a discharge plan by the management server 10. As shown in FIG. It should be noted that the percentage of the dischargeable amount is rounded off to the nearest whole number. In FIG. 6, a diagram for explaining the VPP discharge plan is shown above the drawing. Also in FIG. 6, numerical values calculated as an example of the VPP discharge plan and the discharge plan of the storage battery 20 are shown below the drawing.

[0040] Six frames every 30 minutes are shown above the drawing, and are labeled as the 1st frame, 2nd frame, 3rd frame, 4th frame, 5th frame, and 6th frame from the left side of the drawing. The 1st frame is the first frame within the continuous time period, and the start of the 1st frame is the activation time. As shown in FIG. 6, the total reverse tidal flow rate [kWh] is equal for the six frames, while the total demand varies for each frame. The discharge plan amount for each frame calculated in step 505 described above is shown in row 601 in association with each frame. Also, at the right end of row 601, a total of 7800 kWh is shown as the VPP dischargeable amount of electric energy. In the 1st frame, the discharge plan amount for each frame is shown as 1000 kWh.

[0041] The discharge ratio for each frame calculated in step 505 described above is shown in row 602 in association with each frame. In the 1st frame, the discharge ratio for each frame is shown as 13%. This value is obtained by rounding the third decimal place of 0.128…, which is the result of dividing the discharge plan amount for each frame in the 1st frame, 1000 kWh, by the VPP dischargeable amount, 7800 kWh, and is shown as a percentage.

[0042] The discharge rate for each frame calculated in step 506 described above is shown in rows 603 and 604. In the example of FIG. 6, the discharge rate for each frame is shown in rows 603 and 604 as a command to the battery pack. Here, the battery pack is defined by the charging capacity and the rated output of the storage battery. The battery pack may be composed of only the same model, or may be regarded as the same group when the charging capacity and the rated output are within a predetermined range. In the example of FIG. 6, the discharge rate per cell of a battery pack with a charge amount of 5 kWh and a rated output of 1.5 kW is shown in row 603. Also, the discharge rate per cell of a battery pack with a charge amount of 15 kWh and a rated output of 3 kW is shown in row 604. Specifically, in the first cell, for the battery pack with 5 kWh and 1.5 kW, it is shown as 0.65 kWh (43%). This 0.65 kWh means the amount of electricity discharged in the first cell, and 43% is the ratio of 0.65 kWh to the rated output of 1.5 kW. Also, in the first cell, for the battery pack with 15 kWh and 3 kW, it is shown as 1.95 kWh (64%). This 1.95 kWh means the amount of electricity discharged in the first cell, and 64% is the ratio of 1.95 kWh to the rated output of 3 kW. Also, in the fifth cell, the discharge amount and the ratio to the rated output are shown as 3.45 kWh (115%). The 115% where the ratio to the rated output exceeds 100% is changed to the discharge amount with the rated output, and the ratio to the rated output is shown as 3 kWh (100%).

[0043] Furthermore, in the fifth cell of the battery pack with 5 kWh and 1.5 kW, the shortage amount due to reducing the output is shown in row 605. Specifically, it is shown that a shortage of 0.45 kWh × 50 (units) = 22.5 kWh has occurred in the fifth cell.

[0044] To compensate for this shortage, by increasing the output of the fifth cell of the battery pack shown in row 603 by 22.5 kWh, and for example, reducing the output of the first cell by 22.5 kWh for the amount by which the output is increased in the fifth cell. Then, in the fifth cell, by adding the 22.5 kWh by which the output of the fifth cell of the battery pack shown in row 604 is reduced to the output of the first cell, the accounts can be balanced.

[0045] By restricting in this way, the dischargeable amount of the battery 20 can be used up, and the battery 20 can be effectively utilized.

[0046] <Other configurations> The order of the steps of the processing of the management server 10 shown in FIG. 4 is merely an example and is not particularly limited. The processing is not limited to being performed in time series along the illustrated order of steps, and may be performed in parallel or individually without necessarily being processed in time series. Also, the specific example shown in FIG. 4 is merely an example and is not particularly limited.

[0047] In the present embodiment, when an activation command is acquired, first, the storage battery 20 is remotely operated to charge the storage battery 20. Here, for example, a customer may obtain a benefit of reducing the electricity cost by performing discharging instead of charging in response to dynamic pricing. Therefore, when a lost profit occurs to the customer due to being forced to charge in response to the activation command, the aggregator may be configured to make up for that portion.

[0048] In the case of the present embodiment, each process is executed by an arbitrary computer. The arbitrary computer may be realized as a processor as hardware, a program as software, or a combination thereof. The arbitrary computer may be a general-purpose computer, a computer for a specific use, a workstation, or any other system capable of executing each process. The processor is configured to execute various processes in cooperation with a program. The processor may function as each unit or each means in the present embodiment. The execution order of the processes by the processor is not limited to the order described in the present embodiment and can be changed as necessary.

[0049] The processor can be configured with one or more pieces of hardware. The type of hardware that configures the processor is not limited to a specific type. For example, the processor may be a CPU (Central Processing Unit), an MPU (Micro Processing Unit), a programmable logic device such as an FPGA (Field Programmable Gate Array), a dedicated circuit for executing specific processing such as an ASIC (Application Specific Integrated Circuit), a GPU (Graphic Processing Unit), an NPU (Neural Processing Unit), or other hardware. The processor is not limited to a combination of multiple pieces of hardware of the same type, but can also be configured by a combination of multiple pieces of hardware of different types. When multiple pieces of hardware are configured to execute one or more processes of a certain processor, the multiple pieces of hardware may exist in devices physically separate from each other, or may exist in the same device. The hardware is configured by an electric circuit or the like that combines circuit elements such as semiconductor elements. In any of the embodiments, the order in which the processor executes each process is not limited to the order described in each embodiment, and can be changed as necessary.

[0050] The program may be firmware or software such as microcode. The program may be, for example, a set of program modules, each function of which may be implemented by a processor configured to execute the respective function. The program in each embodiment may be a program code or a plurality of code segments stored in one or more non-transitory computer-readable media (for example, semiconductor memory, magnetic or optical storage media, or other storage). The program may be stored in multiple non-transitory computer-readable media that are physically separate from each other. The program code or multiple code segments may be represented by any combination of procedures, functions, subprograms, routines, subroutines, modules, software packages, classes, instructions, data structures, and program statements. The program code or multiple code segments may be connected to other code segments or hardware circuits by sending or receiving information, data, arguments, parameters, or memory contents. [Explanation of symbols]

[0051] 1...control system, 10...management server, 14...storage device, 20...storage battery, 21...HEMS, 90...network, 110...information acquisition unit, 120...dischargeable amount prediction unit, 130...demand prediction unit, 140...plan generation unit, 141...VPP discharge planning unit, 142...storage battery discharge planning unit, 150...remote control unit

Claims

1. Comprising a processor, The processor Obtains information regarding an activation command power source for which a requested time period, which is a period for which power supply is requested, and a requested power amount, which is the amount of power to be fed back in the requested time period, are defined, In the requested time period, estimates the supply amount of power that each of a plurality of storage batteries can supply and the self-consumption amount, which is the amount of power that each of the plurality of storage batteries self-consumes in the requested time period, When averaging the amount obtained by subtracting the self-consumption amount from the supply amount over the requested time period and feeding back power by the plurality of storage batteries, if any one of the storage batteries exceeds the rated output, causes the one storage battery that exceeds the rated output to feed back power at an output equal to or less than the rated output, and increases the amount of power fed back by any other one of the plurality of storage batteries A control system.

2. Charging the storage battery when obtaining the information regarding the activation command power source The control system according to claim 1, characterized in that.

3. Creates a group of storage batteries from the plurality of storage batteries based on at least one of the charging capacity of the storage battery and the rated output of the storage battery, When increasing the amount of power fed back by any other one of the plurality of storage batteries, increasing the amount of power fed back for each group of the storage batteries The control system according to claim 1, characterized in that.

4. The group of storage batteries is created for each model of the storage battery The control system according to claim 3, characterized in that.

5. Divides the requested time period into a plurality of time periods, When any one of the storage batteries exceeds the rated output in the divided time period, decreases the amount of power fed back by the one storage battery in the time period when it exceeds the rated output, and increases the amount of power fed back by the one storage battery in the time period when it does not exceed the rated output The control system according to claim 1, characterized in that.

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