WO2024090238A1

WO2024090238A1 - Control-data-generating device, control method, and control program

Info

Publication number: WO2024090238A1
Application number: PCT/JP2023/037158
Authority: WO
Inventors: 大輔川本; 光太郎地主
Original assignee: ソニーグループ株式会社
Priority date: 2022-10-26
Filing date: 2023-10-13
Publication date: 2024-05-02

Abstract

In the present invention, a control-data-generating device: generates a scenario describing a target SOC at a point in time for each of a plurality of charging/discharging electric power storage devices that are connected to an electric power grid, and generates control data showing the required electric power amount corresponding to the difference between outlooked and actual values for the amount of electric power charged to or discharged from the electric power grid for all of the plurality of electric power storage devices; transmits, to a corresponding electric power storage device, data that indicates at least the scenario from within the generated control data; and transmits, to an integrated unit communicating with the plurality of power storage devices, data that indicates at least the required electric power amount from within the generated control data. The charging and discharging includes: a first electric power interchange between the plurality of electric power storage devices as a whole and the electric power grid, the first electric power interchange being implemented on the basis of the result of interchange adjustment between the integrated unit and the plurality of electric power storage devices; and a second electric power interchange between the plurality of electric power storage devices, the second electric power interchange being implemented on the basis of the result of interchange adjustment between the plurality of electric power storage devices.

Description

Control data generating device, control method, and control program

This disclosure relates to a control data generation device, a control method, and a control program.

For example, as disclosed in Patent Document 1, it is known to exchange power between multiple power storage devices.

JP 2021-44972 A

If it becomes possible to share power between multiple power storage devices as a whole and the power grid, this can be useful, for example, for ensuring power supplies and balancing power supply and demand.

One aspect of the present disclosure makes it possible to simultaneously exchange power between multiple power storage devices as a whole and the power grid, and between multiple storage batteries.

A control data generating device according to one aspect of the present disclosure generates a scenario describing a target SOC for each time of multiple storage devices that are connected to a power grid and that charge and discharge, and control data indicating a required amount of power equivalent to the difference between a planned value and an actual value for the amount of power that is charged and discharged to the power grid for the multiple storage devices as a whole, transmits at least data indicating the scenario from the generated control data to a corresponding storage device, and transmits at least data indicating the required amount of power from the generated control data to an integration unit that communicates with the multiple storage devices, and the charging and discharging includes a first power interchange between the multiple storage devices as a whole and the power grid, which is implemented based on the result of the interchange adjustment between the integration unit and the multiple storage devices, and a second power interchange between the multiple storage devices, which is implemented based on the result of the interchange adjustment between the multiple storage devices.

In one aspect of the present disclosure, a control method generates control data indicating a scenario describing a target SOC for each time for each of multiple storage devices that are connected to a power grid and that charge and discharge, and a required amount of power equivalent to the difference between a planned value and an actual value for the amount of power that is charged and discharged to the power grid for the multiple storage devices as a whole, transmits at least data indicating the scenario from the generated control data to a corresponding storage device, and transmits at least data indicating the required amount of power from the generated control data to an integration unit that communicates with the multiple storage devices, and the charging and discharging includes a first power interchange between the multiple storage devices as a whole and the power grid, which is implemented based on the result of the interchange adjustment between the integration unit and the multiple storage devices, and a second power interchange between the multiple storage devices, which is implemented based on the result of the interchange adjustment between the multiple storage devices.

A control program according to one aspect of the present disclosure causes a computer to execute a process of generating control data indicating a scenario describing a target SOC for each time of multiple storage devices that are connected to a power grid and that charge and discharge, and a required amount of power equivalent to the difference between a planned value and an actual value for the amount of power that is charged and discharged to the power grid for the multiple storage devices as a whole, transmitting at least data of the generated control data indicating the scenario to a corresponding storage device, and transmitting at least data of the generated control data indicating the required amount of power to an integration unit that communicates with the multiple storage devices, the charging and discharging including a first power interchange between the multiple storage devices as a whole and the power grid, which is implemented based on the result of the interchange adjustment between the integration unit and the multiple storage devices, and a second power interchange between the multiple storage devices, which is implemented based on the result of the interchange adjustment between the multiple storage devices.

1 is a diagram illustrating an example of a schematic configuration of a power system including a control device according to an embodiment. 1 is a block diagram showing an example of a schematic configuration of a power system; FIG. 11 is a diagram illustrating an example of time division in the first power interchange. 4 is a flowchart showing an example of a process (control method) executed in a first power interchange. 10 is a flowchart showing an example of a process (control method) executed in a second power interchange. FIG. FIG. 1 illustrates an example of an electricity market. 1 is a block diagram showing an example of a schematic configuration of a power system; FIG. 13 is a diagram illustrating an example of collaboration with a market. FIG. 13 is a diagram illustrating an example of a scenario update. FIG. 13 is a diagram illustrating an example of a UI. FIG. 13 is a diagram illustrating another example of a UI. FIG. 2 is a diagram illustrating an example of a hardware configuration of an apparatus, etc.

Below, embodiments of the present disclosure will be described in detail with reference to the drawings. Note that in each of the following embodiments, the same elements will be designated by the same reference numerals, and duplicate descriptions will be omitted.

The present disclosure will be described in the following order.
0. Introduction 1. Embodiment 2. Example 3. Example of Priority According to Mode Selection Information 4. Application Example 5. Example of Hardware Configuration 6. Example of Effects

0. Introduction Electricity balancing groups and retailers (hereinafter referred to as "retailers, etc.") are required to operate in such a way that the planned and actual values of electricity supply and demand always match. A state in which the planned and actual values do not match is also called an imbalance. In particular, when a shortage imbalance occurs, that is, a state in which demand exceeds supply, retailers etc. must pay imbalance fees to the electricity transmission and distribution company, which has been a management issue.

In recent years, the introduction of a virtual power plant (VPP) that aggregates distributed resources such as power generation equipment that uses renewable energy and storage equipment including storage batteries connected to the power generation equipment installed at consumers' facilities (houses, factories, etc.) has been considered. The multiple storage equipment within the VPP can share power with each other, for example, so that each SOC approaches a target SOC.

If the energy storage devices within the VPP were able to share electricity with power networks outside the VPP, such as power networks managed by power transmission and distribution companies, this could help retail electricity suppliers and others secure supply capacity. It could also be used to absorb surplus electricity and help balance supply and demand. In this case, however, the energy storage devices within the VPP must continue to hold the amount of electricity that may be required, which creates the problem that consumers cannot use that amount of electricity freely.

According to the disclosed technology, two types of power interchange are implemented in coordination so as to achieve both power interchange between a plurality of power storage devices and a power grid (first power interchange) and power interchange between a plurality of power storage devices (second power interchange). Some examples of specific techniques are described in the following embodiments.

1. Embodiment FIG. 1 is a diagram showing an example of a schematic configuration of a power system including a control device according to an embodiment. An example of a user of the power system 100 is illustrated as a plurality of consumers D. In order to distinguish each consumer D, they are referred to as consumer D-1, consumer D-2, and consumer D-n. The same applies to the storage device 1 and the power generation device 2 described below. Specific examples of the consumer D are houses, facilities, and the like, and more specifically, may indicate a user who uses power in such a place. The plurality of consumers D, for example, belong to the same community, and thus provide (configure) a virtual power plant VPP in cooperation.

The power system 100 includes a power storage device 1, a power generation device 2, an integrated unit 3, a control data generation device 4, a supply and demand management system 5, and a power line PL. Each element is configured to be able to communicate with each other as necessary.

The energy storage device 1 and the power generation device 2 are provided at a consumer D. In the example shown in FIG. 1, the energy storage device 1 is a plurality of energy storage devices 1 each provided at a corresponding consumer D for use. The power generation device 2 is a plurality of power generation devices 2 each provided at a corresponding consumer D for use.

The power line PL extends, for example, within the virtual power plant VPP so as to connect the multiple energy storage devices 1. The multiple energy storage devices 1 are connected in parallel to the power line PL. The power line PL is also connected to the power grid G. Each of the multiple energy storage devices 1 is connected to the power grid G via the power line PL. This connection enables power interchange between the multiple energy storage devices 1 as a whole and the power grid G, and power interchange between the multiple energy storage devices 1. The former is referred to as "first power interchange" and the latter is referred to as "second power interchange", and each is diagrammatically illustrated with a hollow arrow.

The energy storage device 1 includes a storage battery 11 and a power converter 12. The storage battery 11 is a secondary battery that can be charged and discharged. Various known secondary batteries may be used. The power converter 12 is connected between the storage battery 11 and the power line PL, and controls the charging and discharging of the storage battery 11. For example, the power converter 12 charges the storage battery 11 by converting AC power from the power line PL into DC power and supplying it to the storage battery 11. The power converter 12 discharges the storage battery 11 by converting DC power from the storage battery 11 into AC power and supplying it to the power line PL. The power converter 12 is also called a power conditioner, a bidirectional inverter, etc.

The flow of power from the storage device 1 to the power line PL is also referred to as discharging the storage device 1. The flow of power from the power line PL to the storage device 1 is also referred to as charging the storage device 1. Charging and discharging the storage device 1 are also referred to as demand and supply. Discharging and charging are collectively referred to as charging and discharging (or supply and demand). The SOC (State of Charge), which indicates the remaining capacity of the storage battery 11 of the storage device 1, is also simply referred to as the SOC of the storage device 1.

The power generation device 2 generates power, for example, by using renewable energy. The power generation device 2 illustrated in FIG. 1 is a solar power generation device, but this is not limiting and various known power generation devices may be used. At least a portion of the power generated by the power generation device 2 may be consumed by the consumer D. Furthermore, the power generated by the power generation device 2 that is not consumed by the consumer D is charged to the storage battery 11 of the power storage device 1, or is supplied to the power line PL via, for example, the power converter 12. The power charged to the storage battery 11 is consumed by the consumer D, or is supplied to the power line PL via the power converter 12.

The integrated unit 3 communicates with the multiple energy storage devices 1. The control data generation device 4 generates control data and transmits (also referred to as "distributing") it to each of the multiple energy storage devices 1 and the integrated unit 3. The supply and demand management system 5 is operated or provided by, for example, a retail electricity supplier or an electricity transmission and distribution supplier. Further details of the power system 100 will be described with reference to FIG. 2.

FIG. 2 is a block diagram showing an example of the schematic configuration of a power system. Note that the consumer D and the power generation device 2 (FIG. 1) are not shown. In addition to the storage battery 11 and power converter 12 described above, the power storage device 1 includes a generated power/demand power measurement unit 13, a control data storage unit 14, and a power interchange control unit 15. The integrated unit 3 includes a control data storage unit 31 and a power interchange control unit 32. The control data generation device 4 includes an actual value collection unit 41, a power storage device supply and demand simulation implementation unit 42, a control data generation unit 43, a control data update unit 44, a planned value collection unit 45, a planned/actual difference calculation unit 46, and a control data generation unit 47. FIG. 2 also shows examples of some processes executed in the supply and demand management system 5.

<Base scenario>
First, a description will be given of a basic operation of the power storage device 1. Each of the power storage devices 1 is charged and discharged so as to approach a given target SOC. The target SOC is given by the control data generating device 4, as will be described later.

In the energy storage device 1, the power generation/demand measurement unit 13 measures the power generated by the power generation device 2 and the charging/discharging power of the energy storage device 1. The measurement results include actual values of the amount of power generated and the amount of power charged/discharged. The power generation/demand measurement unit 13 transmits (data indicating) the actual values to the control data generation device 4. The power generation/demand measurement unit 13 is configured to include, for example, a power meter, a communication device, etc. The power generation/demand measurement unit 13 may be a so-called smart meter.

In the control data generating device 4, the performance value tallying unit 41 acquires the performance values from each power storage device 1 and tallys them (sums, etc.). Various other processes, such as tallying up past performance values, may also be performed by the performance value tallying unit 41.

The energy storage device supply and demand simulation implementation unit 42 performs a simulation based on the actual values of each energy storage device 1 acquired by the actual value aggregation unit 41. This simulation includes calculation of the future SOC trends of each energy storage device 1. The calculation is performed, for example, based on the past amount of power generated by the power generation device 2 corresponding to each energy storage device 1, the amount of power charged and discharged by the energy storage device 1, etc. The simulation may also be performed based on other information. Examples of other information include future weather, temperature, and humidity, day of the week and holiday information, schedules of consumer D, etc.

The control data generating unit 43 calculates the target SOC for each of the multiple power storage devices 1 based on the simulation results of the power storage device supply and demand simulation implementation unit 42. More specifically, the control data generating unit 43 generates a scenario that describes the target SOC for each of the power storage devices 1 at a future time. For example, the temporal progression of the target SOC over 24 hours on the following day is described by the scenario. The control data generating unit 43 generates control data that indicates the scenario.

The scenario may be calculated taking into consideration the objectives of consumer D. Examples of objectives include minimizing surplus power, minimizing power shortages, minimizing power charges, and disaster prevention measures. For example, each energy storage device 1 is configured so that its operating mode can be selected from a number of modes with different objectives. Examples of modes include a surplus power minimization mode, a power charge minimization mode, a power shortage minimization mode, and a disaster prevention mode. Information indicating the selected mode (mode selection information) may be transmitted from each energy storage device 1 to the control data generation device 4. The control data generation unit 43 generates control data indicating a scenario according to the objective of the mode based on the mode selection information.

The control data update unit 44 transmits the control data generated by the control data generation unit 43, i.e., data indicating the scenario, to the corresponding energy storage device 1. The data indicating the scenario for energy storage device 1-1 is transmitted to energy storage device 1-1. The data indicating the scenario for energy storage device 1-2 is transmitted to energy storage device 1-2. The data indicating the scenario for energy storage device 1-n is transmitted to energy storage device 1-n.

In the energy storage device 1, the control data storage unit 14 receives and stores the control data from the control data generation device 4. The power interchange control unit 15 controls the power converter 12 based on the control data. Specifically, the energy storage device 1 charges and discharges so that the SOC of the energy storage device 1 approaches the target SOC described by the scenario shown in the control data.

<Update scenario>
Next, the first power interchange will be described. The scenario is updated so as to implement the first power interchange.

In the supply and demand management system 5, a power demand forecast for the power grid G is performed (process 5a), and a power generation plan based on the forecast result is generated (process 5b). Market trading based on the power generation plan is performed (process 5c), and a plan determined based on the trading result is submitted (process 5d). The plan here includes planned values for the amount of power charged and discharged to the power grid G by the entire multiple storage devices 1 (i.e., power supply and demand of the virtual power plant VPP). Data indicating this planned value is transmitted from the supply and demand management system 5 to the control data generation device 4. After the plan is submitted, the actual power supply and demand of the power grid G is monitored (process 5e).

The planned value may be a period obtained by dividing a day into multiple periods. Unless otherwise specified, in the following, it is assumed that a day is divided into 48 unit periods (frames), and each unit period is 30 minutes long. The planned value may be a planned value for a unit period. The planned value for each of the multiple unit periods may be transmitted from the supply and demand management system 5 to the control data generation device 4.

In the control data generating device 4, the planned value aggregation unit 45 acquires (receives) the planned values from the supply and demand management system 5.

The planned/actual difference calculation unit 46 calculates the difference between the planned value acquired by the planned value aggregation unit 45 and the actual value of the amount of power charged/discharged from the power grid G of the entire plurality of power storage devices 1 acquired and aggregated by the actual value aggregation unit 41. The amount of power corresponding to this difference is the amount of power that the entire plurality of power storage devices 1 should charge/discharge from the power grid G, and is called the requested amount of power Erequest.

The planned value is referred to as the planned value Eplan. The actual measured value is referred to as the actual value Ereal. The actual value Ereal may be a value in a unit period, like the planned value Eplan. Unless otherwise specified, the planned value Eplan and the actual value Ereal are assumed to be the planned and actual values of the demand, i.e., the amount of charging power for the entire multiple storage devices 1.

The control data generation unit 47 generates control data indicating a scenario for each of the multiple storage devices 1 and a requested amount of energy Erequest based on the calculation results of the planned/actual difference calculation unit 46. The scenarios here describe the target SOC for each of the multiple storage devices 1 at a time so as to bring the actual value Ereal closer to the planned value Eplan, in other words, to compensate for the difference between them.

In addition, in the control data generation unit 47, similar to the control data generation unit 43 described above, the mode selection information of each power storage device 1 may be taken into consideration when generating control data.

The control data update unit 44 transmits the control data generated by the control data generation unit 47 to the multiple energy storage devices 1 and the integrated unit 3. Of the control data, at least the data indicating the scenario is transmitted to the corresponding energy storage device 1. Of the control data, at least the data indicating the requested amount of energy Erequest is transmitted to the integrated unit 3.

In the energy storage device 1, the control data storage unit 14 receives and stores the control data from the control data generation device 4. The control data that has already been received and stored is, for example, overwritten by the current control data. In other words, the scenario is updated.

In the integrated unit 3, the control data storage unit 31 receives and stores control data from the control data generating device 4. The power interchange control unit 32 communicates with the power interchange control unit 15 of the storage device 1 and adjusts the interchange of power. This interchange adjustment is an adjustment for charging and discharging the amount of power equivalent to the requested amount of power Erequest from the multiple storage devices 1 as a whole to the power grid G. Based on the result of this interchange adjustment, a first power interchange is implemented. In the first power interchange, at least some of the multiple storage devices 1 charge and discharge the power from the power grid G so that the charging and discharging power from the multiple storage devices 1 as a whole to the power grid G approaches the requested amount of power Erequest. The first power interchange will be described with reference to Figs. 3 and 4.

FIG. 3 is a diagram showing an example of time division in the first power interchange. The time t corresponding to each unit period in one day (in this example, the unit period = 30 minutes) is referred to as time t1 to time t48. Time t indicates, for example, the start time of the corresponding unit period.

In each unit period, power interchange is performed so that the actual value Ereal approaches the planned value Eplan. One unit period is divided into a plurality of periods. The divided periods are called divided periods. For example, one unit period is divided into m equal periods. That is, each of the unit periods corresponding to time t1 to time t48 is divided into m equal periods. By dividing the unit period corresponding to time t1 into m equal periods, m divided periods corresponding to time t1,1 to time t1,m are obtained. The same applies to the other times t2 to t48. The number of m is not particularly limited, but may be, for example, about 5 to 6.
t1 = t1,1,t1,2,...t1,m
t2 = t2,1,t2,2,...t2,m
…
t48 = t48,1, t48,2, ... t48,m

For each divided period, at least some of the multiple storage devices 1 charge and discharge to the power grid G so that the value of the actual value Ereal for that divided period (=Ereal/m) approaches the value of the planned value Eplan for that divided period (Eplan/m). The total amount of charge and discharge power of the multiple storage devices 1 for the next divided period is calculated from the difference between the values in a certain divided period.

Specifically, in the first power interchange, the integration unit 3 selects, from the multiple storage devices 1, one or more storage devices 1 that can charge and discharge from the power grid G. The selected storage devices 1 charge and discharge from the power grid G so that the amount of charge and discharge power from the entire storage devices 1 selected by the integration unit 3 to the power grid G approaches the requested amount of power Erequest. The description will also be made with reference to FIG. 4.

FIG. 4 is a flowchart showing an example of the process (control method) executed in the first power interchange. Explanations of content that overlap with the above will be omitted where appropriate.

The processing of steps S1 and S2 is executed by the control data generating device 4.

In step S1, for example, the plan-actual difference calculation unit 46 compares the plan value Eplan and the actual value Ereal. If the plan value Eplan is greater than the actual value Ereal (Eplan>Ereal), processing proceeds to step S2. If the plan value Eplan is less than the actual value Ereal (Eplan<Ereal), processing proceeds to step S10.

In step S2, the plan/actual difference calculation unit 46 calculates the requested energy Erequest, which corresponds to the difference between the planned value Eplan and the actual value Ereal. The requested energy Erequest here is the amount of energy charged to the power grid G of the multiple storage devices 1 as a whole, and is also referred to as the requested charging energy Erequest-c. The control data generation unit 47 generates control data indicating the scenario for each of the multiple storage devices 1 and the requested charging energy Erequest-c. This control data indicates a scenario updated so that the amount of energy charged to the power grid G of the multiple storage devices 1 as a whole is increased. The control data update unit 44 transmits the control data to the multiple storage devices 1 and the integrated unit 3.

The processing of steps S3 to S6 and S8 is performed by the integrated unit 3.

In step S3, the power interchange control unit 32 issues a demand request to each power storage device 1. The issuance of the demand request includes an inquiry about the interchangeable amount of power of each power storage device 1, more specifically, the chargeable amount of power in this example.

In step S4, the power interchange control unit 32 receives a response from each storage device 1. The response includes information indicating the interchangeable power amount of each storage device 1. The total amount of interchangeable power of each storage device 1 that responded is referred to as the interchangeable power amount Eaccept. Since the interchangeable power amount Eaccept here corresponds to the amount of charging power, it is also referred to as the chargeable power amount Eaccept-c. Note that storage devices 1 that are not being charged do not need to respond.

In step S5, the power interchange control unit 32 compares the requested charging energy amount Erequest-c with the chargeable energy amount Eaccept-c. In this example, it is determined whether the requested charging energy amount Erequest-c is smaller than the chargeable energy amount Eaccept-c. If the requested charging energy amount Erequest-c is smaller than the chargeable energy amount Eaccept-c (step S5: Yes), processing proceeds to step S6. If not (step S5: No), processing proceeds to step S8.

In step S6, the power interchange control unit 32 preferentially selects, from among the responding storage devices 1, the storage device 1 with the largest amount of interchangeable power, in this case the largest amount of chargeable power. For example, the storage devices 1 with the largest amount of chargeable power are selected in order until the total amount of chargeable power of the selected storage devices 1 reaches the requested amount of charging power Erequest-c.

In step S7, the first power interchange is carried out. Each storage battery 1 selected by the integration unit 3 controls the power converter 12 according to the update scenario, and charges from the power grid G for a certain period of time (e.g., the above-mentioned division period). As a result, the actual value Ereal over the unit period approaches the planned value Eplan.

In step S8, the power interchange control unit 32 selects all of the storage devices 1 that responded.

In step S9, the first power interchange is carried out. The storage device 1 selected by the integrated unit 3 is charged from the power grid G according to the update scenario. The actual value Ereal over the unit period approaches the planned value Eplan.

The process of step S10 is executed by the control data generating device 4. The plan/actual difference calculation unit 46 calculates the requested energy Erequest, which corresponds to the difference between the planned value Eplan and the actual value Ereal. The requested energy Erequest here is the amount of energy discharged from the entire multiple energy storage devices 1 to the power grid G, and is also referred to as the requested discharge energy Erequest-dc. The control data generating unit 47 generates control data indicating the scenario for each of the multiple energy storage devices 1 and the requested discharge energy Erequest-dc. This control data indicates a scenario updated so that the amount of energy discharged from the entire multiple energy storage devices 1 to the power grid G is increased. The control data update unit 44 transmits the control data to each of the multiple energy storage devices 1 and the integrated unit 3.

The processing of steps S11 to S14 and S17 is performed by the integrated unit 3.

In step S11, the power interchange control unit 32 issues a supply request to each power storage device 1. The issuance of the supply request includes an inquiry about the interchangeable amount of power of each power storage device 1, more specifically, the amount of dischargeable power in this example.

In step S12, the power interchange control unit 32 receives a response from each storage device 1. The response includes information indicating the interchangeable power amount of each storage device 1. The total amount of interchangeable power of each storage device 1 that responded is the interchangeable power amount Eaccept, which corresponds to the amount of discharged power here and is therefore also referred to as the dischargeable power amount Eaccept-dc. Note that storage devices 1 that do not discharge do not need to respond.

In step S13, the power interchange control unit 32 compares the requested discharge energy Erequest-dc with the dischargeable energy Eaccept-dc. In this example, it is determined whether the requested discharge energy Erequest-dc is smaller than the dischargeable energy Eaccept-dc. If the requested discharge energy Erequest-dc is smaller than the dischargeable energy Eaccept-dc (step S13: Yes), processing proceeds to step S14. If not (step S13: No), processing proceeds to step S16.

In step S14, the power interchange control unit 32 preferentially selects the storage device 1 with the largest amount of interchangeable power (dischargeable power) from among the responding storage devices 1. For example, the storage devices 1 with the largest amount of dischargeable power are selected in order until the total amount of dischargeable power of the selected storage devices 1 reaches the requested discharge power amount Erequest-dc.

In step S15, the first power interchange is carried out. Each power storage device 1 selected by the integration unit 3 controls the power converter 12 according to the update scenario, and discharges to the power grid G for a certain period of time (e.g., the above-mentioned division period). The actual value Ereal over the unit period approaches the planned value Eplan.

In step S16, the power interchange control unit 32 selects all of the storage devices 1 that responded.

In step S17, the first power interchange is carried out. The storage device 1 selected by the integration unit 3 discharges to the power grid G according to the update scenario. The actual value Ereal over the unit period approaches the planned value Eplan.

After the processing of step S7, step S9, step S15, or step S17 is completed, the processing of the flowchart ends. For example, the first power interchange is performed in this manner.

Returning to FIG. 2, the SOC of the power storage device 1 may deviate from the target SOC due to unexpected power generation and demand fluctuations, including charging and discharging due to the first power interchange described above. In such a case, for example, the SOC of each power storage device 1 is brought closer to the target SOC by the second power interchange, i.e., the power interchange between multiple power storage devices 1.

In the second power interchange, the power interchange control units 15 of the multiple storage devices 1 communicate with each other and adjust the interchange of power. This interchange adjustment is an adjustment for charging and discharging each device so that their SOCs approach the target SOC. Based on the result of this interchange adjustment, the second power interchange is implemented. By charging and discharging the storage devices 1 so that the amount of charging power (demand) of the storage devices 1 to be charged matches the amount of discharging power (supply) of the storage devices 1 to be discharged, the amount of charging and discharging power (supply and demand balance) of the multiple storage devices 1 as a whole to the power grid G is maintained. An explanation will also be given with reference to FIG. 5.

FIG. 5 is a flowchart showing an example of the process (control method) executed in the second power interchange. The processes of steps S21 to S29 are executed in each of the multiple power storage devices 1. In the following, the SOC of the power storage device 1 is also referred to as SoCreal. The target SOC of the power storage device 1 is also referred to as SOCtarget.

In step S21, the storage device 1 compares SOCtarget and SOCreal. If SOCreal is greater than SOCtarget (SOCtarget<SOCreal), processing proceeds to step S22. If SOCreal is less than SOCtarget (SOCtarget>SOCreal), processing proceeds to step S26.

In step S22, the power interchange control unit 15 of the energy storage device 1 issues a supply request to another energy storage device 1 other than the own device. Supply here means that the own device supplies power to the other energy storage device 1. The issuance of the supply request may include an inquiry about the amount of interchangeable power of the other energy storage device 1, more specifically, the amount of chargeable power.

In step S23, the power interchange control unit 15 receives responses from the other energy storage devices 1. The responses may include information indicating the amount of interchangeable (chargeable) power of each energy storage device 1. Note that energy storage devices 1 that are not charging do not need to respond.

In step 24, the power interchange control unit 15 selects the desired storage device 1 from the other storage devices 1 that have responded. For example, a storage device 1 with a large amount of chargeable power may be selected preferentially.

In step S25, the second power interchange is performed. The device itself discharges, and the discharged power is charged to the selected storage device 1. The amount of charge/discharge power to the power grid G of the entire plurality of storage devices 1 is maintained, and the SOCreal of the device itself approaches the SOCtarget.

In step S26, the power interchange control unit 15 of the energy storage device 1 issues a demand request to the other energy storage devices 1 other than the own device. Demand here means that the other energy storage devices 1 will supply power to the own device. The issuance of the demand request may include an inquiry about the amount of interchangeable power of the other energy storage devices 1, more specifically, the amount of dischargeable power.

In step S27, the power interchange control unit 15 receives responses from the other energy storage devices 1. The responses may include information indicating the amount of interchangeable (dischargeable) power of each energy storage device 1. Note that energy storage devices 1 that do not discharge do not need to respond.

In step 28, the power interchange control unit 15 selects the desired storage device 1 from the other storage devices 1 that have responded. For example, the storage device 1 with the largest amount of dischargeable power is selected preferentially.

In step S29, the second power interchange is performed. The selected storage device 1 discharges, and the device itself charges with the discharged power. The amount of charge/discharge power of the entire plurality of storage devices 1 to the power grid G is maintained, and the SOCreal of the device itself approaches the SOCtarget.

After the processing of step S25 or step S29 is completed, the processing of the flowchart ends. For example, the second power interchange is performed in this manner. The scenario describing the target SOC of each storage device 1 may be appropriately updated and distributed so that the second power interchange is performed at the desired timing.

2. Example FIG. 6 is a diagram showing an example. Three storage devices 1 will be described as an example. In order to distinguish between the storage devices 1, they will be referred to as storage devices 1-1, 1-2, and 1-3. A scenario for one day is illustrated for the storage device 1. The illustrated scenario describes the time, the target SOC (SOCtarget), the amount of interchangeable power, and the interchange adjustment partner in association with each other. The amount of interchangeable power indicates the amount of power that the storage device 1 can charge and discharge. The interchange adjustment partner is a partner that is permitted to perform power interchange adjustment, and only power interchange adjustment between the interchange adjustment partner described here is permitted. Examples of the interchange adjustment partner are another storage device 1 and an integrated unit 3. "Anyone" means that the interchange adjustment partner is not particularly limited.

(A) in FIG. 6 illustrates an example of a base scenario. The base scenario is generated and distributed before the start of a day, for example, the day before. For example, the base scenario describes the progress of the target SOC for charging and discharging the energy storage device 1 so that there is no time during the day when surplus power occurs and charging becomes impossible, or conversely, when discharging becomes impossible. The control data generating device 4 may calculate the time when the energy storage device 1 discharges and the amount of discharged power to prevent the generation of surplus power. This amount of discharged power is the amount of power that can be supplied (discharged) to the power grid G, i.e., the amount of power that can be proposed for procurement by the retail electricity supplier, and may correspond to the planned value Eplan.

With regard to the integrated unit 3, the illustrated scenario describes the time, the charge/discharge request, the amount of interchangeable power, and the interchange adjustment partner in association with each other. At the base scenario stage, there is no need for a charge/discharge request or an interchangeable amount of power.

After each storage device 1 actually starts charging and discharging, a difference may occur between the planned value Eplan and the actual value Ereal described above. New control data, i.e., a scenario, is generated and updated to fill this difference.

Specifically, in this example, a power supply shortage occurs between 10:00 and 10:05 (planned value Eplan < actual value Ereal). As of 10:05, the SOC of each storage device 1 is 80% for storage device 1-1, 95% for storage device 1-2, and 60% for storage device 1-3.

(B) in FIG. 6 illustrates an example of an update scenario. The base scenario is updated so that the actual value Ereal approaches the planned value Eplan. Data indicating the requested amount of energy Erequest is also distributed to the integrated unit 3. The integrated unit 3 issues a supply request to each storage device 1, and in this example, storage devices 1-1 and 1-2 are selected. As storage devices 1-1 and 1-2 discharge, the actual value Ereal approaches the planned value Eplan. This first power interchange is carried out between storage devices 1-1, 1-2, and the integrated unit 3 between 10:05 and 10:10.

Here, data indicating a scenario for limiting the party for power exchange adjustment is transmitted to the corresponding energy storage device 1 so as to avoid overlapping implementation of the first power exchange and the second power exchange. In this example, the first power exchange is prioritized over the second power exchange. Data indicating a scenario for limiting the party for power exchange adjustment to the integrated unit 3 is transmitted to the energy storage devices 1, 1-1, and 1-2 that charge and discharge to and from the power grid G in the first power exchange.

Specifically, between 10:05 and 10:10, the power storage devices 1-1 and 1-2 are limited to the integrated unit 3 as their power exchange partner. During that time, power exchange adjustment is performed only between the power storage devices 1-1 and 1-2 and the integrated unit 3, and the first power exchange is implemented based on the results of this power exchange adjustment. The second power exchange is not implemented. After 10:10, when the first power exchange ends, the restriction on the power exchange partner is lifted.

In this example, thereafter, at 10:30, the SOC of power storage device 1-1 falls below the target SOC. Meanwhile, the SOC of power storage device 1-2 and the SOC of power storage device 1-3 both exceed the target SOC. In order to bring the SOC of each power storage device 1 closer to the target SOC, a second power interchange is implemented. For example, power interchange may be implemented between power storage device 1-1 and power storage device 1-3. Power storage device 1-3 discharges, and the discharged power is charged by power storage device 1-1. The SOC of each of power storage device 1-1 and power storage device 1-3 is brought closer to the target SOC.

3. Example of Priority According to Mode Selection Information As described above, a scenario may be generated based on the mode selection information of the power storage device 1. In one embodiment, data indicating a scenario may be generated such that the first power interchange and the second power interchange are implemented based on the priority according to the selected mode. Power interchange according to the purpose of the mode can be implemented.

For example, some consumer D may wish to prioritize securing the SOC of the power storage device 1 over supplying (discharging) power from the power storage device 1 to the power grid G. In such a case, the disaster recovery mode may be selected in the mode selection for the power storage device 1. For example, when the disaster recovery mode is selected, control data is distributed indicating a scenario describing a target SOC for always securing the SOC. No control data for implementing the first power interchange is transmitted, and the second power interchange is implemented with priority over the first power interchange, and overlapping implementation is avoided.

One example of a disaster is a disaster caused by a typhoon or the like. For example, based on the predicted date and time of the typhoon's landfall obtained from meteorological information, by not transmitting control data to implement the first power interchange not only to the storage device 1 for which the disaster countermeasure mode has been selected, but to all storage devices 1, it is possible to implement only the second power interchange and sufficiently ensure the SOC of each storage device 1.

An example of the priority of the first power interchange according to the mode selection information will be described. For example, the priority of the first power interchange regarding discharge may be highest for the surplus power minimization mode, followed by the power fee minimization mode, the power shortage minimization mode, and the disaster response mode.

In surplus power minimization mode, active discharge is performed to prevent the generation of surplus power. It is selected first for discharge to the integrated unit 3 (to the power grid G). In power price minimization mode, power is exchanged based on the power price. By setting the power price of the power request from the integrated unit 3 higher, active discharge is performed. In power shortage minimization mode and disaster response mode, basically, discharge is hardly performed, and is performed only when there is a margin in the SOC.

In this way, the priority of the first power interchange is determined based on the mode selection information of each storage device 1, the power usage status at that time, etc. When it is desired to prioritize the first power interchange, such as when the power procurement of the retail electricity supplier is tight, the power price of the first power interchange can be set higher than the second power interchange, thereby prioritizing the first power interchange. The power price may be indicated in the control data, and may also be used to adjust the interchange between the integrated unit 3 and the storage device 1.

An example of setting electricity prices in stages will be described below. For example, consider a case where electricity prices are set in stages, such as 20 yen if the SOC is 70%, 30 yen if the SOC is 50%, etc. If the normal market price of electricity is around 20 yen, the power interchange conditions presented by the integration unit 3 will also be 20 yen, and electricity will be traded in line with the market price. On the other hand, when electricity procurement becomes tight, the market price will also rise. For example, let's say that the market price becomes 50 yen. The integration unit 3 can procure electricity from the corresponding storage device 1 at 30 yen, which is lower than the market price, by presenting 30 yen, which is higher than normal but lower than the increased market price. Furthermore, the corresponding storage device 1 can also enjoy financial benefits, as electricity can be traded at a higher price than normal.

4. Application Example In the above embodiment, the control on the day, that is, the control executed after one hour has passed before the start time of the unit period (frame) (so-called after the gate is closed) is described as an example. In one embodiment, it is also possible to minimize the procurement cost by notifying the supply and demand management system 5 of the amount of electricity that can be procured before the gate is closed. The following description will be given with reference to Figs. 7 to 10.

Figure 7 shows an example of an electricity market. There are two markets for managing the supply and demand balance. One is the day-ahead market, which closes by 10:00 the day before. The other is the hour-ahead market, which closes one hour before each unit period (each frame) mentioned above. The closing time corresponds to the gate close (GC) time. Electricity retailers and others submit plans for the day's electricity demand and supply in the day-ahead and hour-ahead markets.

FIG. 8 is a block diagram showing an example of a schematic configuration of a power system. In this example, the control data generating device 4 further includes a procurement amount calculation unit 48, a procurement amount notification unit 49, and a control data generating unit 50.

The available procurement amount calculation unit 48 calculates the surplus power of each storage device 1 as the amount of power that can be procured (available procurement amount) based on the simulation results of the storage device supply and demand simulation implementation unit 42. The available procurement amount notification unit 49 notifies the supply and demand management system 5 of the available procurement amount. The notified available procurement amount is taken into consideration in the power generation plan in the supply and demand management system 5.

In the supply and demand management system 5, it becomes possible to select the energy storage device 1 as an option for power procurement. For example, the energy storage device 1 and other power sources owned by retail electricity suppliers can be compared with respect to power procurement costs and amounts, and a desirable procurement source can be selected. When the energy storage device 1 is selected, the procurement amount is notified to the control data generation device 4.

In the control data generating device 4, the control data generating unit 50 generates control data based on the procurement amount notified by the supply and demand management system 5. The control data updating unit 44 transmits the control data generated by the control data generating unit 50 to each power storage device 1. By implementing such control in both the day-ahead market and the hour-ahead market, it is possible to reliably procure electricity and maintain the supply and demand balance, thereby minimizing imbalance costs incurred by electricity retailers and the like.

An example of the link between the above-mentioned two markets, the day-ahead market and the hour-ahead market, will be explained with reference to Figure 9.

FIG. 9 is a diagram showing an example of cooperation with the market. In the supply and demand management system 5, demand forecasting and power supply procurement are performed (step S31). If power supply cannot be secured (step S32: No), for example, in the control data generating device 4, an interchange simulation is performed, a power storage device 1 that can supply power during the time period when power supply cannot be secured is selected, and the available supply amount and price are notified (step S33). Power supply procurement is updated (step S34), and the amount of procurement from the power storage device 1 is notified. A power storage device that satisfies the updated procurement amount is selected, and a discharge scenario is distributed to each power storage device 1 and the integrated unit 3 (step S35). From the viewpoint of charging and discharging the power storage device 1 to maintain the supply and demand balance, and control between the integrated unit 3 and each power storage device 1, a scenario for interchange between the power storage device 1 that generates a surplus even when discharged and the power storage device 1 that generates a shortage is distributed (step S36).

The latest demand forecast and power procurement are used to check whether power can be secured (steps S37 and S38). If power cannot be secured (step S38: No), an interchange simulation is performed, a power storage device 1 that can supply power during the time period when power cannot be secured is selected, and the available supply amount and price are notified (step S39). Power procurement is updated (step 40), a power storage device that satisfies the updated procurement amount is selected, and a discharge scenario is distributed to each power storage device 1 and the integrated unit 3 (step S41). A scenario for interchange between a power storage device 1 that generates a surplus even when discharged and a power storage device 1 that has a shortage is distributed (step S42).

In real-time control after the pre-hour market (after the gate is closed), if there is a difference in actual demand, i.e., a difference between the plan and the actual demand (step S43, step S44: Yes), a charge/discharge scenario is distributed to the additionally chargeable/dischargeable storage device 1 and the integrated unit 3 (step S45). A scenario that appropriately balances the SOC according to the SOC of the storage device 1 is distributed.

The above scenario (control data) update will be explained with reference to Figure 10.

Figure 10 shows an example of a scenario update. The scenario for power storage device 1-1 is referred to as scenario 1, etc. The same applies to power storage devices 1-2 to 1-n.

As shown in FIG. 10(A), base scenarios for all energy storage devices 1 are generated and distributed. As shown in FIG. 10(B) and FIG. 10(C), in the day-ahead market and hour-ahead market, scenarios for energy storage devices 1 that exchange power with integrated units 3 are generated and updated as necessary. Furthermore, as shown in FIG. 10(D), scenarios are updated in real time even after the gate is closed.

The storage device 1 to which the update scenario has been distributed can efficiently allocate power between the storage devices 1 by only using the integrated unit 3 as a power exchange adjustment partner during the first power exchange time period, and also using other storage devices 1 as power exchange adjustment partners at other times.

The above control will not only enable electricity supply and demand to minimize the imbalance between power generation and demand by retail electricity suppliers, etc., but will also make it possible to supply and demand electricity to the supply and demand adjustment market and wholesale electricity market.

In one embodiment, information about electricity may be presented to consumer D. Such presentation may be performed, for example, by the energy storage device 1. The energy storage device 1 may include a UI (user interface) for presenting information, etc. An example of a UI is a display, etc. This will be described with reference to Figures 11 and 12.

FIG. 11 is a diagram showing an example of a UI. In this example, a scenario is displayed in a graph. The dashed graph line indicates the predicted SOC value. The solid graph line indicates the progress of the target SOC for using electricity efficiently without generating surpluses or shortages. In the illustrated case, by actively using electricity between 8:00 and 16:00 and saving at other times, power can be used more efficiently and the consumer's electricity bill can be reduced. By visually expressing how electricity is used throughout the day and presenting it in a way that consumers can intuitively understand, and by leading to a change in consumer D's behavior, power can be used more efficiently.

FIG. 12 is a diagram showing another example of the UI. In this example, the SOC of each storage device 1 is visualized and displayed. In addition to the storage device 1 (own storage device) used by the consumer D, the power status of the storage devices 1 (other storage devices) used by other consumers D and the integrated unit 3 are also displayed. By comparing these power statuses, the consumer D can make decisions on supplying power when there is a shortage of power from other storage devices 1 or the integrated unit 3 (power from the power grid G), or consuming (demanding) power when there is a surplus. By leading to a change in the behavior of the consumer D, it is possible to promote efficient use of power.

5. Example of Hardware Configuration Each of the devices described above, such as the power storage device 1, the integrated unit 3, the control data generating device 4, and the supply and demand management system 5, may include a computer. An example will be described with reference to FIG. 13.

FIG. 13 is a diagram showing an example of the hardware configuration of a device, etc. The illustrated computer 1000 has a CPU 1100, a RAM 1200, a ROM (Read Only Memory) 1300, a HDD (Hard Disk Drive) 1400, a communication interface 1500, and an input/output interface 1600. Each part of the computer 1000 is connected by a bus 1050.

The CPU 1100 operates based on the programs stored in the ROM 1300 or the HDD 1400 and controls each part. For example, the CPU 1100 loads the programs stored in the ROM 1300 or the HDD 1400 into the RAM 1200 and executes processes corresponding to the various programs.

The ROM 1300 stores boot programs such as the Basic Input Output System (BIOS) that is executed by the CPU 1100 when the computer 1000 starts up, as well as programs that depend on the hardware of the computer 1000.

HDD 1400 is a computer-readable recording medium that non-temporarily records programs executed by CPU 1100 and data used by such programs. Specifically, HDD 1400 is a recording medium that records programs (e.g., control programs) for executing the operations related to the present disclosure, which are an example of program data 1450.

The communication interface 1500 is an interface for connecting the computer 1000 to an external network 1550 (e.g., the Internet). For example, the CPU 1100 receives data from other devices and transmits data generated by the CPU 1100 to other devices via the communication interface 1500.

The input/output interface 1600 is an interface for connecting the input/output device 1650 and the computer 1000. For example, the CPU 1100 receives data from an input device such as a keyboard or a mouse via the input/output interface 1600. The CPU 1100 also transmits data to an output device such as a display, a speaker or a printer via the input/output interface 1600. The input/output interface 1600 may also function as a media interface that reads programs and the like recorded on a specific recording medium. Examples of media include optical recording media such as DVDs (Digital Versatile Discs) and PDs (Phase change rewritable Disks), magneto-optical recording media such as MOs (Magneto-Optical Disks), tape media, magnetic recording media, and semiconductor memories.

At least some of the functions of the energy storage device 1, integrated unit 3, control data generating device 4, and supply and demand management system 5 described above may be realized, for example, by the CPU 1100 of the computer 1000 executing a program (control program) loaded onto the RAM 1200. In addition, the HDD 1400 stores programs and the like related to the present disclosure. Note that the CPU 1100 reads and executes program data 1450 from the HDD 1400, but as another example, these programs may be obtained from other devices via the external network 1550.

6. Example of Effects The above-described technology is specified, for example, as follows. One of the disclosed technologies is a control data generating device 4. As described with reference to FIG. 1 to FIG. 5 and the like, the control data generating device 4 generates a scenario describing a target SOC for each time of the multiple storage devices 1 connected to the power grid G, and control data indicating a requested amount of power Erequest corresponding to a difference between a planned value Eplan and an actual value Ereal of the amount of charge/discharge power of the multiple storage devices 1 as a whole with respect to the power grid G, transmits at least data indicating the scenario among the generated control data to the corresponding storage device 1, and transmits at least data indicating the requested amount of power Erequest among the generated control data to the integration unit 3 that communicates with the multiple storage devices 1. The charging and discharging includes a first power interchange between the multiple storage devices 1 as a whole and the power grid G, which is implemented based on the result of the interchange adjustment between the integration unit 3 and the multiple storage devices 1, and a second power interchange between the multiple storage devices 1, which is implemented based on the result of the interchange adjustment between the multiple storage devices 1. According to such a control data generating device 4, it becomes possible to achieve both the first power interchange and the second power interchange.

As described with reference to Figures 2 to 4, in the first power interchange, at least some of the storage devices 1 of the multiple storage devices 1 may charge and discharge to the power grid G so that the charge/discharge power of the multiple storage devices 1 as a whole to the power grid G approaches the requested power amount Erequest. For example, the planned value Eplan is a planned value for a unit period, and in the first power interchange, at least some of the storage devices 1 of the multiple storage devices 1 may charge and discharge to the power grid G for each divided period into which the unit period is divided, so that the value of the actual value for the divided period approaches the value of the planned value for the divided period. The integration unit 3 selects one or more storage devices 1 that can be charged and discharged to the power grid G from the multiple storage devices 1, and in the first power interchange, the selected storage devices 1 may charge and discharge to the power grid G so that the charge/discharge power amount of the entire storage devices 1 selected by the integration unit 3 to the power grid G approaches the requested power amount Erequest. For example, by implementing the first power interchange in this manner, the actual value Ereal can be brought closer to the planned value Eplan.

As described with reference to FIG. 6 etc., the scenario further describes the exchange adjustment partner for each of the multiple energy storage devices 1, and the control data generating device 4 may transmit data indicating a scenario that limits the exchange adjustment partner so as to avoid overlapping implementation of the first power exchange and the second power exchange to the corresponding energy storage device 1. The control data generating device 4 may transmit data indicating a scenario that limits the exchange adjustment partner to the integrated unit 3 to the energy storage devices 1 (e.g., energy storage device 1-1 and energy storage device 1-2) that charge/discharge with respect to the power grid G in the first power exchange. For example, in this way, the first power exchange and the second power exchange can be linked.

As described with reference to FIG. 2 etc., the operating mode of the energy storage device 1 can be selected from a plurality of modes, and the control data generating device 4 may generate data indicating a scenario such that the first power interchange and the second power interchange are implemented based on a priority according to the selected mode. The plurality of modes may include a surplus power minimization mode, a power fee minimization mode, a power shortage minimization mode, and a disaster countermeasure mode. Power interchange can be implemented according to the purpose of the mode.

The control method described with reference to Figures 1 to 5 is also one of the disclosed techniques. The control method generates control data indicating a scenario describing a target SOC for each time of the multiple storage devices 1 connected to the power grid G, and a requested amount of power Erequest corresponding to a difference between a planned value Eplan and an actual value Ereal of the amount of charge/discharge power for the power grid G of the multiple storage devices 1 as a whole, transmits at least data indicating the scenario from the generated control data to the corresponding storage device 1, and transmits at least data indicating the requested amount of power Erequest from the generated control data to an integration unit 3 that communicates with the multiple storage devices 1. The charging and discharging includes a first power interchange between the multiple storage devices 1 as a whole and the power grid G, which is implemented based on the result of the interchange adjustment between the integration unit 3 and the multiple storage devices 1, and a second power interchange between the multiple storage devices 1, which is implemented based on the result of the interchange adjustment between the multiple storage devices 1. As explained above, this control method also makes it possible to achieve both the first power interchange and the second power interchange.

1 to 5 and 13 are also disclosed technologies. The control program causes the computer 1000 to execute processing to generate control data indicating a scenario describing a target SOC for each time of the multiple storage devices 1 that are connected to the power grid G and a requested amount of power Erequest corresponding to the difference between a planned value Eplan and an actual value Ereal of the amount of charge/discharge power for the power grid G of the multiple storage devices 1 as a whole, transmit at least data indicating the scenario from the generated control data to the corresponding storage device 1, and transmit at least data indicating the requested amount of power Erequest from the generated control data to the integration unit 3 that communicates with the multiple storage devices 1. The charging and discharging includes a first power interchange between the multiple storage devices 1 as a whole and the power grid G, which is implemented based on the result of the interchange adjustment between the integration unit 3 and the multiple storage devices 1, and a second power interchange between the multiple storage devices 1, which is implemented based on the result of the interchange adjustment between the multiple storage devices 1. As explained above, this control program also makes it possible to achieve both the first power interchange and the second power interchange.

This technology may be related to Goal 7 "Affordable and Clean Energy" and Goal 13 "Climate Action" of the Sustainable Development Goals (SDGs) adopted at the United Nations Summit in 2015.

This technology is related to power networks (e.g. smart grids) that use digital communications technology to detect and respond to changes in the use of renewable energy, while allowing for the two-way flow of electricity and data. The use of renewable energy also makes it possible to reduce greenhouse gas (GHG) emissions.

Note that the effects described in this disclosure are merely examples and are not limited to the disclosed contents. Other effects may also exist.

The above describes the embodiments of the present disclosure, but the technical scope of the present disclosure is not limited to the above-described embodiments, and various modifications are possible without departing from the gist of the present disclosure. In addition, components from different embodiments and modified examples may be combined as appropriate.

The present technology can also be configured as follows.
(1)
generating a scenario describing a target SOC for each of a plurality of charging/discharging power storage devices connected to a power grid, and control data indicating a required amount of power corresponding to a difference between a planned value and an actual value of a charging/discharging power amount for the power grid of the entire plurality of power storage devices;
Transmitting at least data indicating the scenario from among the generated control data to a corresponding power storage device;
Transmitting at least data indicating the scenario from among the generated control data to a corresponding power storage device;
transmitting at least the data indicating the required amount of power among the generated control data to an integration unit that communicates with the plurality of power storage devices;
A control data generating device,
The charging and discharging is
A first power interchange between the plurality of power storage devices and the power grid, the first power interchange being performed based on an interchange adjustment result between the integration unit and the plurality of power storage devices;
A second power interchange between the plurality of power storage devices is performed based on a result of an interchange adjustment between the plurality of power storage devices; and
including,
Control data generator.
(2)
In the first power interchange, at least some of the power storage devices of the plurality of power storage devices charge and discharge with respect to the power grid so that charging/discharging power of the entirety of the plurality of power storage devices with respect to the power grid approaches the required amount of power.
A control data generating device as described in (1).
(3)
The planned value is a planned value for a unit period,
In the first power interchange, at least a part of the power storage devices among the plurality of power storage devices is charged/discharged to/from the power grid for each divided period obtained by dividing the unit period into a plurality of periods, so that a value of an actual value for the divided period approaches a value of a planned value for the divided period.
A control data generating device according to (1) or (2).
(4)
the integration unit selects one or more power storage devices that can be charged/discharged to/from the power grid from the plurality of power storage devices;
In the first power interchange, the selected power storage device charges and discharges with respect to the power grid such that an amount of charge/discharge power of the entire power storage devices selected by the integration unit with respect to the power grid approaches the required amount of power.
A control data generating device according to any one of (1) to (3).
(5)
The scenario further describes a power exchange adjustment partner for each of the plurality of power storage devices,
The control data generation device transmits data indicating a scenario for limiting a counterpart of the power interchange adjustment so as to avoid overlapping implementation of the first power interchange and the second power interchange to a corresponding power storage device.
A control data generating device according to any one of (1) to (4).
(6)
The control data generation device transmits data indicating a scenario in which the interchange adjustment partner is limited to the integration unit to an electric power storage device that charges/discharges the electric power grid in the first electric power interchange.
A control data generating device according to (5).
(7)
The operation mode of the power storage device can be selected from a plurality of modes,
the control data generation device generates data indicating the scenario such that a first power interchange and a second power interchange are implemented based on a priority according to a selected mode.
A control data generating device according to any one of (1) to (6).
(8)
The plurality of modes include a surplus power minimization mode, a power fee minimization mode, a power shortage minimization mode, and a disaster prevention mode.
A control data generating device according to (7).
(9)
generating a scenario describing a target SOC for each of a plurality of charging/discharging power storage devices connected to a power grid, and control data indicating a required amount of power corresponding to a difference between a planned value and an actual value of a charging/discharging power amount for the power grid of the entire plurality of power storage devices;
Transmitting at least data indicating the scenario from among the generated control data to a corresponding power storage device;
Transmitting at least data indicating the scenario from among the generated control data to a corresponding power storage device;
transmitting at least the data indicating the required amount of power among the generated control data to an integration unit that communicates with the plurality of power storage devices;
1. A control method comprising:
The charging and discharging is
A first power interchange between the plurality of power storage devices and the power grid, the first power interchange being performed based on an interchange adjustment result between the integration unit and the plurality of power storage devices;
A second power interchange between the plurality of power storage devices is performed based on a result of an interchange adjustment between the plurality of power storage devices; and
including,
Control methods.
(10)
On the computer,
generating a scenario describing a target SOC for each of a plurality of charging/discharging power storage devices connected to a power grid, and control data indicating a required amount of power corresponding to a difference between a planned value and an actual value of a charging/discharging power amount for the power grid of the entire plurality of power storage devices;
Transmitting at least data indicating the scenario from among the generated control data to a corresponding power storage device;
transmitting at least the data indicating the required amount of power among the generated control data to an integration unit that communicates with the plurality of power storage devices;
A control program for executing a process,
The charging and discharging is
A first power interchange between the plurality of power storage devices and the power grid, the first power interchange being performed based on an interchange adjustment result between the integration unit and the plurality of power storage devices;
A second power interchange between the plurality of power storage devices is performed based on a result of an interchange adjustment between the plurality of power storage devices; and
including,
Control program.

REFERENCE SIGNS LIST 1 Energy storage device 11 Storage battery 12 Power converter 13 Power generation/demand measurement unit 14 Control data storage unit 15 Power interchange control unit 2 Power generation device 3 Integrated unit 31 Control data storage unit 32 Power interchange control unit 4 Control data generation device 41 Actual value collection unit 42 Energy storage device supply and demand simulation execution unit 43 Control data generation unit 44 Control data update unit 45 Planned value collection unit 46 Planned/actual difference calculation unit 47 Control data generation unit 48 Available supply amount calculation unit 49 Available supply amount notification unit 50 Control data generation unit 5 Supply and demand management system G Power grid PL Power line VPP Virtual power plant

Claims

generating a scenario describing a target SOC for each of a plurality of charging/discharging power storage devices connected to a power grid, and control data indicating a required amount of power corresponding to a difference between a planned value and an actual value of a charging/discharging power amount for the power grid of the entire plurality of power storage devices;
Transmitting at least data indicating the scenario from among the generated control data to a corresponding power storage device;
transmitting at least the data indicating the required amount of power among the generated control data to an integration unit that communicates with the plurality of power storage devices;
A control data generating device,
The charging and discharging is
A first power interchange between the plurality of power storage devices and the power grid, the first power interchange being performed based on an interchange adjustment result between the integration unit and the plurality of power storage devices;
A second power interchange between the plurality of power storage devices is performed based on a result of an interchange adjustment between the plurality of power storage devices; and
including,
Control data generator.
In the first power interchange, at least some of the power storage devices of the plurality of power storage devices charge and discharge with respect to the power grid so that charging/discharging power of the entirety of the plurality of power storage devices with respect to the power grid approaches the required amount of power.
2. The control data generating device according to claim 1.
The planned value is a planned value for a unit period,
In the first power interchange, at least a part of the power storage devices among the plurality of power storage devices is charged/discharged to/from the power grid for each divided period obtained by dividing the unit period into a plurality of periods, so that a value of an actual value for the divided period approaches a value of a planned value for the divided period.
2. The control data generating device according to claim 1.
the integration unit selects one or more power storage devices that can be charged/discharged to/from the power grid from the plurality of power storage devices;
In the first power interchange, the selected power storage device charges and discharges with respect to the power grid such that an amount of charge/discharge power of the entire power storage devices selected by the integration unit with respect to the power grid approaches the required amount of power.
2. The control data generating device according to claim 1.
The scenario further describes a power exchange adjustment partner for each of the plurality of power storage devices,
The control data generation device transmits data indicating a scenario for limiting a counterpart of the power interchange adjustment so as to avoid overlapping implementation of the first power interchange and the second power interchange to a corresponding power storage device.
2. The control data generating device according to claim 1.
The control data generation device transmits data indicating a scenario in which the interchange adjustment partner is limited to the integrated unit to an electric power storage device that charges and discharges with respect to the electric power grid in the first electric power interchange.
6. The control data generating device according to claim 5.
The operation mode of the power storage device can be selected from a plurality of modes,
the control data generation device generates data indicating the scenario such that a first power interchange and a second power interchange are implemented based on a priority according to a selected mode.
2. The control data generating device according to claim 1.
The plurality of modes include a surplus power minimization mode, a power fee minimization mode, a power shortage minimization mode, and a disaster prevention mode.
8. The control data generating device according to claim 7.
generating a scenario describing a target SOC for each of a plurality of charging/discharging power storage devices connected to a power grid, and control data indicating a required amount of power corresponding to a difference between a planned value and an actual value of a charging/discharging power amount for the power grid of the entire plurality of power storage devices;
Transmitting at least data indicating the scenario from among the generated control data to a corresponding power storage device;
transmitting at least the data indicating the required amount of power among the generated control data to an integration unit that communicates with the plurality of power storage devices;
1. A control method comprising:
The charging and discharging is
A first power interchange between the plurality of power storage devices and the power grid, the first power interchange being performed based on an interchange adjustment result between the integration unit and the plurality of power storage devices;
A second power interchange between the plurality of power storage devices is performed based on a result of an interchange adjustment between the plurality of power storage devices; and
including,
Control methods.
On the computer,
generating a scenario describing a target SOC for each of a plurality of charging/discharging power storage devices connected to a power grid, and control data indicating a required amount of power corresponding to a difference between a planned value and an actual value of a charging/discharging power amount for the power grid of the entire plurality of power storage devices;
Transmitting at least data indicating the scenario from among the generated control data to a corresponding power storage device;
transmitting at least the data indicating the required amount of power among the generated control data to an integration unit that communicates with the plurality of power storage devices;
A control program for executing a process,
The charging and discharging is
A first power interchange between the plurality of power storage devices and the power grid, the first power interchange being performed based on an interchange adjustment result between the integration unit and the plurality of power storage devices;
A second power interchange between the plurality of power storage devices is performed based on a result of an interchange adjustment between the plurality of power storage devices; and
including,
Control program.