JP6936096B2 - Power management device and power management method - Google Patents

Description

The present invention relates to a power management device and a power management method.

Patent Document 1 describes a power management system that determines the amount of power reduction to be reduced by each consumer according to the maximum contract current value when responding to demand response. Here, the demand response (DR: Demand Response) means that the consumer side suppresses the use of electric power in response to the setting of the electricity rate price or the payment of the incentive when the wholesale market price rises or the grid reliability declines. It is defined as changing the power consumption pattern.

Conventionally, large consumers such as factories and buildings, which consume a large amount of power, have been performing demand response during peak power consumption by controlling demand, controlling storage batteries, and the like. For example, in the cooling operation period, when there is a request to suppress demand at the peak of demand, the demand is suppressed by raising the set temperature of the air conditioner or stopping the less important equipment such as lighting. Further, in the demand suppression method using a storage battery, a large storage battery is charged in advance and discharged at a designated time of demand suppression, and the purchased power during that period is suppressed for a certain period of time.

On the other hand, for consumers such as ordinary houses, the range in which demand can be suppressed is small because the power consumption is not large. Therefore, even if the demand in general housing is suppressed, the sufficient effect of the demand suppression cannot be expected. On the other hand, in recent years, based on contracts between aggregators and multiple consumers, the amount of power demand reductions made in response to requests from electric power companies (including retail electric power companies and grid operators), etc. Efforts to trade capacity are being considered. Here, an aggregator (also referred to as a DR aggregator) is a business operator that bundles a plurality of consumers and trades the amount of demand reduction by DR with an electric power company.

In addition, with the expansion of the introduction of power generation equipment using renewable energy such as solar power generation equipment, it is considered that the change in the power consumption pattern in the demand response includes an increase in demand in addition to a reduction in demand. That is, it is being studied to stabilize the quality of electricity in the distribution system by encouraging consumers to increase the consumption of electric power when an oversupply of electric power occurs.

Japanese Patent No. 5922138

By the way, in consumers such as general houses, the introduction of storage batteries is being promoted along with the introduction of power generation facilities using renewable energy. Charging and discharging of storage batteries is considered to contribute to reducing and increasing demand for electric power, and there is a demand for devices and methods for effectively managing the charging and discharging of multiple storage batteries owned by multiple consumers such as ordinary houses. ..

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a power management device and a power management method capable of effectively managing the charge and discharge of a plurality of storage batteries.

In order to solve the above problems, one aspect of the present invention is a device that manages the charge and discharge of each storage battery in a plurality of consumer facilities each having a storage battery, and power adjustment at a predetermined requested time from a parent aggregator. A receiving unit that receives the request, and a selection order determining unit that determines the selection order of each storage battery based on each storage state of the plurality of storage batteries at the baseline in response to the request received by the receiving unit. One or a plurality of the storage batteries are selected based on the selection order determined by the selection order determination unit for each predetermined unit time shorter than the requested time, and the charging / discharging of the selected storage batteries is applied to the customer facilities. It is a power management device including a control unit for instructing.

Further, one aspect of the present invention is the power management device, in which the selection order determination unit changes the selection order as necessary based on a predetermined measured value related to power adjustment for each of a plurality of the unit times. do.

Further, one aspect of the present invention is the power management device, in which the selection order determining unit sets a group consisting of one or a plurality of the storage batteries so as to satisfy the request, and for each set group. The selection order is determined.

Further, one aspect of the present invention is the power management device, and when the group that does not satisfy the request is confirmed, the selection order determination unit uses the storage battery that is not assigned to any of the groups. By assigning to the group, the group is reset.

Further, one aspect of the present invention is the power management device, and when the group that does not satisfy the request is confirmed, the selection order determination unit disassembles any of the groups and re-uses the group. Set.

Further, one aspect of the present invention is the power management device, in which the control unit instructs each consumer facility to charge / discharge with the rated power of each of the selected storage batteries.

Further, one aspect of the present invention is the power management device in which the power storage state is the available amount, and the selection order determination unit selects the storage battery according to the power storage state at the baseline. The order is determined, and the selection order is updated every unit time based on each estimated value of the electricity storage state.

Further, one aspect of the present invention is the power management device, in which the power storage state is the charge rate, and the selection order determination unit determines the selection order of each storage battery according to each of the power storage states at the baseline. Is determined, and the selection order is updated every unit time based on each estimated value of the power storage state.

Further, one aspect of the present invention is a method of managing the charge / discharge of each storage battery in a plurality of consumer facilities each having a storage battery, and the receiving unit adjusts the power at a predetermined requested time from the parent aggregator. Upon receiving the request, the selection order determination unit determines the selection order of each storage battery based on each storage state of the plurality of storage batteries at the baseline in response to the request received by the reception unit, and the control unit determines the selection order. , One or a plurality of the storage batteries are selected based on the selection order determined by the selection order determination unit for each predetermined unit time shorter than the requested time, and the charging / discharging of the selected storage batteries is sent to the customer facilities. It is a power management method that gives instructions to the user.

According to the present invention, it is possible to effectively manage the charge and discharge of a plurality of storage batteries.

It is a schematic diagram which shows the structural example of the storage battery group management system which concerns on one Embodiment of this invention. It is a block diagram which shows the configuration example of the electric power management apparatus 10 and the consumer facility 20 shown in FIG. It is a flowchart which shows the operation example of the control device 12 shown in FIG. It is a schematic diagram for demonstrating the operation example of the control device 12 shown in FIG. It is a flowchart which shows the other operation example of the control device 12 shown in FIG. It is explanatory drawing for demonstrating the operation example of the control device 12 shown in FIG. It is a flowchart which shows still another operation example of the control device 12 shown in FIG. It is explanatory drawing for comparison of the operation example shown in FIG. 3, FIG. 5 and FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. It is a schematic diagram which shows the structural example of the storage battery group management system which concerns on one Embodiment of this invention. The storage battery group management system 1 shown in FIG. 1 includes a power management device 10, a plurality of consumer facilities 20 such as general households, and a large-scale consumer facility 30. Each of the plurality of consumer facilities 20 has a storage battery 21. The consumer facility 30 has a storage battery 31. The number of customer facilities 30 may be 0 or a plurality.

The electric power management device 10 bundles a plurality of consumers (a plurality of consumer facilities 20 and a consumer facility 30) to reduce or increase demand by DR (collectively referred to as a change in demand) as a parent aggregator of an electric power company or the like. It is a computer such as a server operated by a business operator (aggregator) that deals with. The power management device 10 communicates a request for power adjustment (request for power adjustment) in a plurality of customer facilities 20 and demand facilities 30 from a higher-level control system 50 (computer such as a server) operated by an electric power company or the like (parent aggregator). Receive via line 60. Further, the power management device 10 selects one or a plurality of storage batteries 21 or storage batteries 31 in response to the received power adjustment request, and each consumer facility 20 or consumer facility having each selected storage battery 21 or storage battery 31. A charge / discharge command is transmitted to 30 via the communication line 40 to control charge / discharge in each selected storage battery 21 or storage battery 31.

In the present embodiment, the request for power adjustment includes a request for reducing demand and a request for increasing demand for the plurality of consumer facilities 20 and the demand facility 30 as a whole managed by the power management device 10. In addition, the request for demand reduction includes a request for reduction of power flow power and a request for increase of reverse power flow power. Further, the request for power adjustment may include a content that directly indicates a change in charge / discharge power, discharge power, or charge power in the storage battery 21 or the storage battery 31.

Further, the storage battery group management system 1 can be configured in a form (for example, as one function) included in a power management system such as TEMS (Town Energy Management System) or CEMS (Community Energy Management System). Further, the power management device 10 can be configured (for example, as one function) in a form included in a management device (management server) in a power management system such as TEMS or CEMS. Here, TEMS and CEMS are systems that collectively manage electric power in a plurality of consumer facilities 20 and consumer facilities 30 such as residential, commercial facilities, and industrial facilities in a predetermined area, for example. In this case, the power management device 10 manages (predicts and controls) the charge / discharge power of the plurality of storage batteries 21 and the storage batteries 31 of the plurality of consumer facilities 20 and the demand facilities 30, and also, for example, the generated power of the power generation facility. It can be configured as a device for management (prediction and control) and management (prediction and control) of power consumption of load equipment. Further, the consumer facility managed by the power management device 10 may include a consumer facility that does not have a storage battery. In addition, in this embodiment, a predetermined area range may be formed by one area range, or may be formed by a plurality of geographically discrete area ranges.

FIG. 2 is a block diagram showing a configuration example of the power management device 10 and the consumer facility 20 shown in FIG. In the configuration example shown in FIG. 2, the consumer facility 20 includes a communication unit 24, a control device 22, a distribution board 23, a storage battery 21, a power generation facility 25, a power load facility 26, and a power meter 28.

The communication unit 24 transmits and receives predetermined information to and from the power management device 10 via the communication line 40. The communication line 40 is composed of a communication line 43, a network 41 such as the Internet, and a communication line 42.

The control device 22 controls the electric equipment (power generation equipment 25, storage battery 21, power load equipment 26, communication unit 24, etc.) in the consumer facility 20. Further, the control device 22 can input the power consumption information measured by the power meter 28 and use the input power consumption information for various controls.

In the present embodiment, among the storage battery 21, the power generation facility 25, and the power load facility 26 included in the consumer facility 20, those that can be controlled by the power management device 10 via, for example, the control device 22 are referred to as power facilities. In the present embodiment, the charging power and the discharging power of the storage battery 21 are controlled by the power management device 10. Further, the generated power of a part or all of the power generation facility 25 may be controllable by the power management device 10. Further, the power consumption of a part or all of the power load equipment 26 may be controllable by the power management device 10. That is, the storage battery 21, the power generation facility 25 and the power load facility 26 that can be controlled by the power management device 10 are power facilities.

The control device 22 controls the charge / discharge power, the generated power, the power consumption, and the like of the power equipment provided in the consumer facility 20 according to the instruction received from the power management device 10. At that time, the control device 22 controls the charge / discharge power of the storage battery 21 according to the charge / discharge command received from the power management device 10.

The control device 22 also collects power-related information in the consumer facility 20. The control device 22 can collect information on the supply and demand power measured by the power meter 28, for example. Further, the control device 22 can collect the power generated by the power generation facility 25, the remaining capacity (stored power) and charge / discharge power of the storage battery 21, the load power (power consumption) of the power load facility 26 and the like. The control device 22 also manages the collected information such as generated power, charge / discharge power, demand power, supply / supply power, etc. from the communication unit 24 at predetermined time intervals or in response to a request from the power management device 10. It is transmitted to the device 10.

The distribution board 23 distributes the electric power supplied from the service line 71 via the electric power meter 28 to the storage battery 21, the electric power load facility 26, and the like via the wiring 27 and supplies the electric power. The drop line 71 is a component of the distribution system on the general power transmission and distribution business operator side. Further, the distribution board 23 can output the electric power output from the power generation facility 25 or the like to the service line 71 via the electric power meter 28 due to reverse power flow.

The storage battery 21 is a facility that stores electric power input for charging and discharges and outputs the stored electric power. The storage battery 21 includes, for example, a secondary battery and an inverter. The storage battery 21 stores (charges) electric power and outputs (discharges) the stored electric power. The inverter converts the electric power for charging the secondary battery from alternating current to direct current, and converts the electric power output from the secondary battery by discharge from direct current to alternating current. That is, the inverter performs bidirectional conversion of the power input / output from the secondary battery. The charge / discharge power of the storage battery 21 is controlled by the control device 22.

The storage battery 21 can be charged by inputting the electric power of the commercial power supply supplied through the distribution board 23. Further, the storage battery 21 can be charged by inputting the electric power generated by the power generation facility 25. Further, the storage battery 21 can supply the stored electric power as a power source for the electric power load facility 26. Further, the storage battery 21 can reverse power flow by outputting the stored electric power from the distribution board 23 to the service line 71 via the electric power meter 28.

The power generation facility 25 is, for example, a facility that receives sunlight to generate power. The power generation facility 25 includes, for example, a solar cell and a PCS (Power Conditioning System). The power generation facility 25 receives sunlight to generate power, converts the power obtained by the power generation into alternating current by PCS, and outputs the power.

The electric power generated by the power generation facility 25 can be supplied as a power source for the power load facility 26. Further, the electric power generated by the power generation facility 25 can be charged to the storage battery 21. Further, the electric power generated by the power generation facility 25 can be reverse-flowed by being output from the distribution board 23 to the drop line 71 via the electric power meter 28.

The power generation facility 25 and the storage battery 21 may have an integrated configuration such as a power conversion circuit.

The electric power load facility 26 collectively indicates one or a plurality of predetermined devices and facilities that consume electric power for their own operation in the consumer facility 20. The type and number of devices, equipment, and the like as loads provided by each consumer facility 20 may be different. The power load equipment 26 can operate by inputting the commercial power supply supplied from the distribution board 23. Further, the electric power load facility 26 can operate by inputting the electric power generated by the power generation facility 25. Further, the power load equipment 26 can operate by inputting the power output from the storage battery 21.

Further, the power load equipment 26 includes a load whose power consumption can be controlled by a control device 22 or the like, such as a hot water storage type water heater, a heat storage type air conditioner, a clothes dryer, a dish dryer, a storage battery (load as a charging target), and the like. You may.

The watt-hour meter 28 measures the demand power and the generated power. That is, the watt-hour meter 28 measures the supply and demand power. The supply and demand power is, for example, the difference between the demand power and the generated power. In the consumer facility 20, the electric power supplied from the drop line 71 to the distribution board 23 is the demand electric power. On the other hand, the electric power output from the storage battery 21 and the power generation facility 25 and supplied from the distribution board 23 to the service line 71 via the electric power meter 28 is the generated electric power. When the forward power flow corresponding to the demand power is set to the positive direction, if the generated power corresponding to the reverse power flow is smaller than the demand power corresponding to the forward power flow, the supply and demand power is measured as a positive value and is relative to the demand power. If the generated power is large, the supply and demand power is measured as a negative value. The watt-hour meter 28 is generated by, for example, a demand meter that measures the demand power used in one consumer facility 20, and a power generation facility 25 or the like that uses natural energy such as a solar power generator in one consumer facility 20. It is equipped with a power generation meter that measures the generated power generation.

The power meter 28 may be used as a smart meter, for example, so that the measured power supply and demand information can be transmitted to the power management device 10 via the network 41 or the like. In this case, the control device 22 does not have to collect the supply and demand power measured by the power meter 28.

The consumer facility 20 may include either a storage battery 21 or a power generation facility 25. Further, the consumer facility 20 may be provided with neither the storage battery 21 nor the power generation facility 25. Further, the power generation facility 25 is not limited to one using a solar cell, and may be a power generation device that generates power using other renewable energies such as wind power generation and geothermal power generation, or a combination thereof.

Further, the storage battery 21 and the power generation facility 25 included in the consumer facility 20 are grid-connected to the commercial power source. As a result, the consumer facility 20 provided with the storage battery 21 or the power generation facility 25 causes the power generated and output by the power generation facility 25 or the power output by the storage battery 21 to be discharged back to the power system (distribution network) of the commercial power source. And can be sold through the power system.

The consumer facility 30 has the same basic configuration as the consumer facility 20. That is, in the consumer facility 30, the charge / discharge power, the generated power, the power consumption, and the like of the power equipment included in the consumer facility 30 are controlled according to the instruction received from the power management device 10. At that time, in the consumer facility 30, the charge / discharge power of the storage battery 31 is controlled according to the charge / discharge command received from the power management device 10. However, in general, commercial power is distributed to the consumer facility 20 from a pillar transformer, a road transformer, etc. connected to the high voltage distribution line of the distribution system via the low voltage distribution line, but the consumer facility Commercial power is distributed directly to 30, for example, from a high-voltage distribution line.

On the other hand, the power management device 10 includes a communication unit 11, a control device 12, and a storage unit 13. The control device 12 can be composed of, for example, a combination of hardware such as a CPU (central processing unit), a main storage device, an auxiliary storage device, and an input / output device, and a predetermined program executed by the CPU.

In the present embodiment, the electric power management device 10 manages the supply and demand of electric power in each customer facility 20 and the consumer facility 30 in accordance with, for example, the planned value simultaneous equal amount system. That is, the operator of the electric power management device 10 formulates the electric power supply and demand plan for each consumer facility 20 and the consumer facility 30 as a whole for each predetermined unit planning time (for example, 30 minutes), and the electric power supply and demand plan is formulated. To the general power transmission and distribution business operator. In addition, if the actual power supply and demand in each consumer facility 20 and the entire consumer facility 30 becomes excessive or deficient (imbalance) with respect to the power supply and demand plan, it will be between the electric power company and the general power transmission and distribution business operator. Settlement corresponding to imbalance (imbalance settlement) is performed at.

The power supply and demand plan in this embodiment includes a power generation plan and a demand plan. The power generation plan may have a planned value of each consumer facility 20 and the consumer facility 30 as a whole, or an individual planned value of the consumer facility 20 and the consumer facility 30 for the electric power to be reverse-flowed to the distribution network. The demand plan may have a planned value of each consumer facility 20 and the consumer facility 30 as a whole for electric power purchased from the distribution network in a forward flow, or an individual planned value of the consumer facility 20.

Under the planned value simultaneous equal amount system corresponding to this embodiment, it is required that the actual results for each of the power generation plan and the demand plan are achieved as planned. That is, in the planned value simultaneous equal amount system corresponding to this embodiment, it is required that the actual power flowed backward from each customer facility 20 and the entire customer facility 30 is not excessive or deficient with respect to the power generation plan. It is required that the actual power generated by each consumer facility 20 and the consumer facility 30 as a whole is not excessive or deficient with respect to the demand plan. In the present embodiment, the generated power means the power to be reverse power flowed to the distribution network. In addition, the demand power refers to the power that flows forward from the distribution network. In the present embodiment, the generated power includes the power generated by the power generation facility 25 and the power discharged by the storage battery 21.

The power management device 10 executes power control for the power equipment in each customer facility 20 and the entire consumer facility 30. The power management device 10 is connected so as to be able to communicate with each of the consumer facility 20 and the consumer facility 30 via a communication line 40 composed of a network 41 such as the Internet, a communication line 42, and a communication line 43. Has been done. As a result, the electric power management device 10 can control the operation of the electric power equipment included in the consumer facility 20 and the consumer facility 30. Further, the power management device 10 is connected to the host control system 50 via a communication line 60 so as to be able to communicate with each other.

The communication unit 11 communicates with the control device 22 in the consumer facility 20 via the communication line 40. Further, the communication unit 11 communicates with the host control system 50 via the communication line 60. The communication line 60 may also be configured via a network 41 such as the Internet, like the communication line 40.

The storage unit 13 stores information used by the control device 12 for power management. The storage unit 13 of the present embodiment stores the power generation plan information 131, the demand plan information 132, and the consumer facility basic information 133.

The power generation plan information 131 is information indicating the power generated by the formulated power generation plan. The demand plan information 132 is information indicating the demand power according to the formulated demand plan. The consumer facility basic information 133 includes basic information about each consumer facility 20 and the consumer facility 30. For example, the basic information of the customer facility corresponding to one customer facility 20 includes the customer facility ID (identification code) uniquely indicating the customer facility 20, the value of the contracted power of the customer facility 20, and the power generation facility 25. Rated output value, rated power (rated output) value (rated charge / discharge power value, rated discharge power value and rated charge power value) and capacity of the storage battery 21, power load equipment provided in the consumer facility 20 Information about the 26 and information such as the address of the communication unit 24 and the control device 22 included in the consumer facility 20 are included.

The control device 12 includes a power control unit 121, a reception unit 122, a selection order determination unit 123, and a storage battery control unit 124.

The power control unit 121 receives each demand based on the power generation plan information 131 and the demand plan information 132 stored in the storage unit 13 and the actual value (actual measurement value) of the power supply and demand in each customer facility 20 and the consumer facility 30. It controls the electric power equipment in the house facility 20 and the consumer facility 30.

The receiving unit 122 receives a request for power adjustment at a predetermined request time from the upper control system 50 operated by the electric power company or the like, which is a parent aggregator, via the communication unit 11. The predetermined requested time is the time when the power adjustment, that is, the demand reduction or the demand increase is requested, and is defined by, for example, the start time and the end time or the start time and the duration. The request for electric power adjustment includes information indicating the requested time for electric power adjustment, the value of electric power for which demand reduction or demand increase is requested, the value of electric energy, etc. in response to the request by DR.

The selection order determination unit 123 changes the charge / discharge power in response to the request for power adjustment received by the reception unit 122, based on the storage states of the plurality of storage batteries 21 and the storage batteries 31 at the baseline. The selection order of each storage battery 21 and the storage battery 31 is determined. Here, the baseline is the power consumption assumed when there is no request for power adjustment. The baseline can be obtained from the power generation plan and the demand plan under the planned value simultaneous equal amount system. Alternatively, in this actual mode, the baseline may be obtained based on the actual value of the generated power and the actual value of the demand plan. In the present embodiment, the power storage state is information indicating the degree of remaining charge or discharge capacity based on the baseline assumed at the requested time. The storage state can be expressed by, for example, the difference or ratio between the rated power (maximum charge power or maximum discharge power) of the storage battery 21 or the storage battery 31 and the charge power or discharge power at the baseline, the available amount, or the charge rate. In addition, the selection order is that each storage battery 21 can satisfy the requested reduction or increase in power or electric energy by changing the charge / discharge power in a part of the plurality of storage batteries 21 and the storage battery 31 instead of all of them. This is the order of selection of each storage battery 21 and storage battery 31 when selecting a part of the storage battery 21 and the storage battery 31 that change the charge / discharge power from the entire storage battery 31. In the present embodiment, the selection order can be set for each storage battery 21 or storage battery 31, or for each group consisting of a plurality of storage batteries 21 or storage batteries 31. That is, in the present embodiment, the selection order determination unit 123 uses the planned value (or actual value) of the charge / discharge power and the remaining capacity of each of the plurality of storage batteries 21 and the storage batteries 31 when there is no request for power adjustment as a reference. The order of selection of each storage battery 21 and storage battery 31 is determined for each storage battery 21 and each storage battery 31 or for each predetermined group based on the degree of surplus capacity of charge / discharge power assumed at the requested time.

The storage battery control unit (control unit) 124 selects one or more storage batteries 21 or storage batteries 31 based on the selection order determined by the selection order determination unit 123 for each predetermined unit time shorter than the requested time, and each selected storage battery. A charge / discharge command is transmitted to the 21 or the storage battery 31, and the control of the charge / discharge power in each of the selected storage batteries 21 or the storage battery 31 is instructed to the consumer facility 20 or the consumer facility 30. Here, the charge / discharge command is, for example, information indicating a target unit time, information indicating an average discharge power target value or an average charge power target value in the unit time, or a discharge power amount in the unit time. Includes information indicating the target value of or the target value of the charging power amount.

The selection order determination unit 123 may change the selection order as necessary based on a predetermined measured value related to the power adjustment for each of a plurality of unit times. Here, the predetermined measured value related to the power adjustment is, for example, a value of demand reduction or demand increase that can be actually generated. In this case, it can be calculated based on the difference between the measured value of the charge / discharge power in each storage battery 21 or the storage battery 31 or the measured value of the supply / supply power in each customer facility 20 or the consumer facility 30 and the baseline. Alternatively, the predetermined measured value related to the power adjustment may be, for example, an actually measured value of the charged / discharged power, an actually measured value of the stored capacity, or the like. Further, each of a plurality of unit times means that a plurality of unit times are used as a unit, not every one unit time.

Next, an operation example of the control device 12 shown in FIG. 2 will be described with reference to FIGS. 3 and 4. FIG. 3 is a flowchart showing an operation example of the control device 12 shown in FIG. FIG. 4 is a schematic diagram for explaining an operation example of the control device 12 shown in FIG. In the operation example shown in FIG. 3, when the receiving unit 122 shown in FIG. 2 receives the request for power adjustment, the requested power demand (or power demand amount) is increased or decreased from the plurality of storage batteries 21 or the storage batteries 31. This is an example of the operation when responding by charging / discharging. Further, in this operation example, the method of determining the selection order by the selection order determination unit 123 is the county unit (county unit order). FIG. 4 schematically shows an example in which 12 storage batteries 21 are numbered “1” to “12”, grouped (grouped), and charged or discharged in each group. The process shown in FIG. 3 is repeatedly executed. Hereinafter, an operation example will be described by taking as an example the case where the 12 storage batteries 21 shown in FIG. 4 are controlled.

In the process shown in FIG. 3, when the receiving unit 122 receives the power adjustment request from the host control system 50 (“YES” in step S101), the storage battery control unit 124 (or the selection order determination unit 123) sets the adjustment start time. Wait until it becomes (repeated "NO" in step S102). When the adjustment start time is reached (“YES” in step S102), the selection order determination unit 123 determines the number of groups (step S103).

For example, suppose that the power adjustment request received by the receiving unit 122 is a request for reducing or increasing the demand for XkW (X kW). Further, it is assumed that the total of the reserve capacity for reducing demand or the total reserve capacity for increasing demand is YkW (Y kW) for the 12 storage batteries 21 shown in FIG. 2 with reference to the baseline.

The reserve capacity for demand reduction corresponds to the discharge power from the storage battery 21 that can be increased and the charge power to the storage battery 21 that can be reduced with reference to the baseline. The reserve capacity for increasing demand corresponds to the discharge power from the storage battery 21 that can be reduced and the charge power to the storage battery 21 that can be increased with reference to the baseline.

In the present embodiment, the reserve capacity for demand reduction is the total power demand that is expected to be reduced with reference to the baseline when discharged from the 12 storage batteries 21 at the rated discharge power (maximum power). That is, the remaining capacity for demand reduction is the power that can be discharged from the storage battery 21 that is not charged / discharged at the baseline (= rated discharge power), and the charging power of the storage battery 21 that is being charged at the baseline can be discharged from the storage battery 21. It is the sum of the power to which the power (= rated discharge power) is added and the power that can be further discharged from the storage battery 21 being discharged at the baseline (= power obtained by subtracting the power being discharged from the rated discharge power).

Further, in the present embodiment, the surplus capacity for increasing the demand is the total of the demand power that is expected to increase with reference to the baseline when the 12 storage batteries 21 are charged with the rated charging power (maximum power). That is, the surplus capacity for increasing demand is the power that can be charged to the storage battery 21 that has not been charged / discharged (= rated charging power), and the power that can be charged to the storage battery 21 (= rated charging power) to the discharging power of the storage battery 21 that is being discharged. ), And the power that can be further charged to the charging storage battery 21 (= the power obtained by subtracting the charging power from the rated charging power).

Hereinafter, the request for power adjustment received by the receiving unit 122 will be described as a request for demand reduction. In this case, in step S103, the power for which demand reduction is requested is XkW, the reserve capacity for demand reduction is YkW, and the selection order determination unit 123 uses the integer part of Y / X obtained by dividing Y by X as the number of groups. .. For example, when the requested power X for demand reduction is 7 kW and the remaining capacity Y for demand reduction is 24 kW for the 12 storage batteries 21 as a whole, Y / X = 24/7 = about 3.4, so the selection order determination unit 123 , The number of groups is determined to be "3" which is an integer part of Y / X.

Next, the selection order determination unit 123 numbers the 12 storage batteries 21 (step S104). In the example of FIG. 4, as shown in FIG. 4A, the numbers “1” to “12” are assigned to the 12 storage batteries 21 in order from the left. This number is the order of allocation when allocating each storage battery 21 to each group. The numbers are, for example, randomly distributed so as to be different each time, or the numbers are sequentially moved up or down by 1 (for example, the number set next to the storage battery 21 having the number "1" is "12", and the number is a number. Can be choreographed (for example, the number set next to the storage battery 21 of "2" is "1").

Next, the selection order determination unit 123 groups the 12 storage batteries 21 into either the first group 80-1, the second group 80-2, or the third group 80-3 in numerical order. (Step S105). At that time, the selection order determination unit 123 groups the groups so that the remaining capacity for demand reduction for each group exceeds the power XkW requested for demand reduction (step S105).

In the example shown in FIG. 4A, the three storage batteries 21 of the numbers "1" to "3" are assigned to the first group 80-1. In this case, it means that the total demand reduction capacity of the three storage batteries 21 of the numbers "1" to "3" exceeds XkW. Further, the four storage batteries 21 of the numbers "4" to "7" are assigned to the second group 80-2. In this case, it means that the total demand reduction capacity of the four storage batteries 21 of the numbers "4" to "7" exceeds XkW. Further, the three storage batteries 21 of the numbers "8" to "10" are assigned to the third group 80-3. In this case, it means that the total demand reduction capacity of the three storage batteries 21 of the numbers "8" to "10" exceeds XkW. The two storage batteries 21 of the numbers "11" and "12" are not assigned to any of the groups. The two storage batteries 21 having the numbers "11" and "12", which do not belong to any of the groups, are not controlled in response to the request for power adjustment.

Next, the storage battery control unit 124 selects a group for charge / discharge control (step S106). In the example shown in FIG. 4, the storage battery control unit 124 selects the first group 80-1.

Next, the storage battery control unit 124 executes charge / discharge control of the selected group (step S107). In the example shown in FIG. 4, the storage battery control unit 124 has each storage battery for each consumer facility 20 including each storage battery 21 of the numbers "1" to "3" belonging to the selected first group 80-1. A charge / discharge command instructing to discharge at the rated power (maximum power) is transmitted from 21. In each consumer facility 20 provided with the storage batteries 21 of the numbers "1" to "3", the discharge power is controlled with the rated power as the target in the instructed unit time based on the received charge / discharge command. In each consumer facility 20, after the instructed unit time has elapsed, the charge / discharge power is controlled based on the planned value when there is no charge / discharge command. Further, at each consumer facility 20, the charge / discharge power of the storage battery 21 and the supply / discharge power of the consumer facility 20 are measured in the instructed unit time, and the measured values of the measured charge / discharge power and supply / discharge power are the power management device 10. Will be sent to.

Next, the storage battery control unit 124 determines whether or not the adjustment end time has been reached (step S108). When the adjustment end time is reached (“YES” in step S108), the control device 12 temporarily ends the process shown in FIG. 3 and starts the process shown in FIG. 3 again. On the other hand, when the adjustment end time has not been reached (“NO” in step S108), the storage battery control unit 124 determines whether or not the unit time has elapsed (step S109). The unit time is the charge / discharge control time according to the request in charge of one group. If the unit time has not elapsed (“NO” in step S109), the storage battery control unit 124 again determines whether or not the adjustment end time has been reached (step S108).

In the process shown in FIG. 3, the power adjustment request time is, for example, 30 minutes to several hours. On the other hand, the unit time can be, for example, 3 to 10 minutes.

When the unit time has elapsed (“YES” in step S109), the storage battery control unit 124 selects the next group as the target of charge / discharge control (step S110). In the example of FIG. 4, as shown in FIG. 4 (b), the storage battery control unit 124 selects the second group 80-2.

Next, the storage battery control unit 124 determines whether or not the group selected in step S110 is the first group (step S111). The first group is the group selected by the storage battery control unit 124 in step S106. In the example of FIG. 4B, the first group is group 80-1.

If it is not the first group (“NO” in step S111), the storage battery control unit 124 executes charge / discharge control of the selected group (in this case, group 80-2) (step S107). In the example shown in FIG. 4B, the storage battery control unit 124 refers to each consumer facility 20 including the storage batteries 21 of the numbers "4" to "7" belonging to the selected second group 80-2. Each storage battery 21 transmits a charge / discharge command instructing the battery to discharge at the rated power (maximum power). In each consumer facility 20 provided with the storage batteries 21 of the numbers "4" to "7", the discharge power is controlled with the rated power as the target in the instructed unit time based on the received charge / discharge command. In each consumer facility 20, after the instructed unit time has elapsed, the charge / discharge power is controlled based on the planned value when there is no charge / discharge command. Further, at each consumer facility 20, the charge / discharge power of the storage battery 21 and the supply / discharge power of the consumer facility 20 are measured in the instructed unit time, and the measured values of the measured charge / discharge power and supply / discharge power are the power management device 10. Will be sent to.

Next, the storage battery control unit 124 determines whether or not the adjustment end time has been reached (step S108). When the adjustment end time has not been reached (“NO” in step S108), the storage battery control unit 124 determines whether or not the unit time has elapsed (step S109). When the unit time has elapsed (“YES” in step S109), the storage battery control unit 124 selects the next group as the target of charge / discharge control (step S110). In the example of FIG. 4, as shown in FIG. 4 (b), the storage battery control unit 124 selects the third group 80-3.

Next, the storage battery control unit 124 determines whether or not the group selected in step S110 is the first group (step S111). If it is not the first group (“NO” in step S111), the storage battery control unit 124 executes charge / discharge control of the selected group (in this case, group 80-3) (step S107). In the example shown in FIG. 4B, the storage battery control unit 124 refers to each consumer facility 20 including the storage batteries 21 of the numbers "8" to "10" belonging to the selected third group 80-3. Each storage battery 21 transmits a charge / discharge command instructing the battery to discharge at the rated power (maximum output). In each consumer facility 20 provided with the storage batteries 21 of the numbers "8" to "10", the discharge power is controlled with the rated power as the target in the target unit time based on the received charge / discharge command. In each consumer facility 20, after the target unit time has elapsed, the charge / discharge power is controlled based on the planned value when there is no charge / discharge command. Further, at each consumer facility 20, the charge / discharge power of the storage battery 21 and the supply / discharge power of the consumer facility 20 are measured in the instructed unit time, and the measured values of the measured charge / discharge power and supply / discharge power are the power management device 10. Will be sent to.

Next, the storage battery control unit 124 determines whether or not the adjustment end time has been reached (step S108). When the adjustment end time has not been reached (“NO” in step S108), the storage battery control unit 124 determines whether or not the unit time has elapsed (step S109). When the unit time has elapsed (“YES” in step S109), the storage battery control unit 124 selects the next group as the target of charge / discharge control (step S110). In the example of FIG. 4, as shown in FIG. 4 (b), since the currently selected group 80-3 is the last group (that is, the fourth group is not set), the storage battery control unit 124 is set. , Go back to the beginning and select the first group 80-1.

Next, since the group (group 80-1) selected in step S110 is the first group (“YES” in step S111), the storage battery control unit 124 confirms the control result of the charge / discharge control of each storage battery 21 (step). S112). In step S112, the storage battery control unit 124 determines, as confirmation of the control result of the charge / discharge control, whether or not the charge / discharge control executed for each group in step S107 satisfies the requested power XkW. That is, in step S112, the storage battery control unit 124 satisfies the requested power XkW by the measured value of the demand reduction or the demand increase by the charge / discharge control executed for each group (an example of the predetermined measured value related to the power adjustment). Determine if it was a value.

For example, in step S112, the storage battery control unit 124 determines the change in charge / discharge power with respect to the baseline for each group based on the measured value of the charge / discharge power of each storage battery 21 whose charge / discharge control is controlled in step S107. It is determined whether or not the requested power XkW is within a predetermined range. Alternatively, for example, in step S112, the storage battery control unit 124 uses the baseline as a reference for each group based on the measured value of the supply and demand power of each consumer facility 20 including each storage battery 21 whose charge / discharge control is controlled in step S107. It is determined whether or not the change in the supply and demand power is within a predetermined range with respect to the requested power XkW. Alternatively, in step S112, the storage battery control unit 124 charges / discharges each storage battery 21 at the rated power (maximum power) based on the measured value of the charge / discharge power of each storage battery 21 whose charge / discharge control is controlled in step S107 (this example). If not, it is determined whether or not the ratio or difference of the charge / discharge power (discharge power in this example) to the rated power is within a predetermined range.

Next, the selection order determination unit 123 determines whether or not it is necessary to reconfigure the grouping based on the confirmation result of the control result by the storage battery control unit 124 in step S112 (step S113). In step S113, the selection order determination unit 123 determines that reconstruction is necessary when it is confirmed in the confirmation result in step S112 that there is a group in which the requested power XkW cannot be satisfied within a predetermined range. Judging, if it is confirmed that there was none, it is judged that reconstruction is not necessary.

When the selection order determination unit 123 determines that reconstruction is not necessary (“NO” in step S113), the storage battery control unit 124 charges and discharges the selected group (in this case, group 80-1) in the same manner as described above. Control is executed (step S107).

On the other hand, when the selection order determination unit 123 determines that reconstruction is necessary (“YES” in step S113), the selection order determination unit 123 cannot satisfy the requested power XkW within a predetermined range1. Alternatively, a storage battery 21 that does not belong to the group is added to the plurality of groups so that the electric power exceeds X kW (step S114). However, in step S114, if the storage battery 21 that does not belong to the group no longer exists or does not exist from the beginning, the selection order determination unit 123 does not add the storage battery 21.

For example, as shown in FIG. 4C, the remaining capacity of the shaded storage battery 21 of the number "6" and the storage battery 21 of the number "7" is insufficient, and when the charge / discharge control of the group 80-2 is performed, It is assumed that the discharge power that satisfies the requested power XkW within a predetermined range cannot be secured. In this case, in step S114, as shown in FIG. 4D, the selection order determination unit 123 has the storage battery 21 of the number "11" and the storage battery 21 of the number "12" that do not belong to the groups 80-1 to 80-3. One or both are added to the group 80-2 so as to exceed the power XkW. In the example shown in FIG. 4 (e), both the storage battery 21 of the number "11" and the storage battery 21 of the number "12" are added to the second group 80-2. In this case, the storage battery 21 that does not belong to the group disappears. Further, in this case, the selection order of the storage battery 21 of the number "11" and the storage battery 21 of the number "12" is based on the selection order of the storage batteries 21 of the numbers "8" to "10" belonging to the group 80-3. It has been changed to be higher.

Next, the selection order determination unit 123 determines whether or not the remaining capacity of demand reduction or demand increase (demand reduction in this example) of each group satisfies the requested power XkW within a predetermined range (predetermined error range). (Step S115). When the selection order determination unit 123 determines that all the groups are satisfied (“YES” in step S115), the storage battery control unit 124 charges and discharges the selected group (in this case, group 80-1) in the same manner as described above. Control is executed (step S107).

On the other hand, when it is determined that any of the groups is not satisfied (“NO” in step S115), the selection order determination unit 123 determines whether or not the current number of groups is 2 or more (step S116). If it is not 2 or more (step S116 “NO”), the storage battery control unit 124 executes charge / discharge control of the selected group (in this case, group 80-1) in the same manner as described above (step S107). On the other hand, in the case of two or more (“YES” in step S116), the selection order determination unit 123 disassembles the last group and sets the storage battery 21 belonging to the last group as the storage battery 21 not belonging to the group (step S117). ), Similar to the above, for one or more groups that cannot satisfy the requested power XkW within a predetermined range, a storage battery 21 that does not belong to the group is added so as to exceed the power XkW (step). S114). FIG. 4 (f) shows a state in which the groups 80-3 are disassembled and the storage batteries 21 of the numbers "8" to "10" are not affiliated with the group.

By the above processing, when a request for power adjustment is received, the selection order determination unit 123 sets a group consisting of one or a plurality of storage batteries so as to satisfy the request, and determines the selection order for each set group. .. For example, in the example shown in FIG. 4, the selection order for each storage battery is in the order of numbers "1" to "12", and the selection order for each group is group 80-1, group 80-2, and group 80-3. In that order. In this operation example, the storage batteries to be controlled can be selected in an appropriate selection order, so that the charging / discharging of a plurality of storage batteries can be effectively managed.

Further, since the selection order determination unit 123 changes the selection order as necessary based on a predetermined measured value related to the power adjustment for each of a plurality of unit times, the power control can be executed with high accuracy.

Further, when a group that does not satisfy the request is confirmed, the selection order determination unit 123 resets the group by allocating a storage battery that is not assigned to any of the groups to the group. Therefore, the power control can be executed with high accuracy.

Further, when a group that does not satisfy the request is confirmed, the selection order determination unit 123 disassembles one of the groups and resets the group. Therefore, the power control can be executed with high accuracy.

Further, the storage battery control unit 124 instructs each consumer facility to charge / discharge with the rated power of each selected storage battery. Therefore, the charge / discharge efficiency of the storage battery 21 or the storage battery 31 can be easily increased.

In the operation example shown in FIG. 3, the control result is confirmed and the group is reconstructed based on the confirmation result when the charge / discharge control of each group makes one cycle. The results may be confirmed and the group may be reconstructed. Further, although the grouping is performed so as to exceed the requested electric power XkW, for example, a predetermined margin may be further provided.

Next, another operation example of the control device 12 shown in FIG. 2 will be described with reference to FIGS. 5 and 6. FIG. 5 is a flowchart showing another operation example of the control device 12 shown in FIG. FIG. 6 is a chart for explaining another operation example of the control device 12 shown in FIG. In the operation example shown in FIG. 5, when the receiving unit 122 shown in FIG. 2 receives the request for power adjustment, the requested power demand (or power demand amount) is increased or decreased from the plurality of storage batteries 21 or the storage batteries 31. This is another example of the operation when responding by charging / discharging. Further, in this operation example, the selection order is determined by the selection order determination unit 123 for each storage battery and in the order of available quantity. The usable amount is the capacity that can be discharged in response to a request for reduction in demand and the capacity that can be charged in response to a request for increase in demand. The process shown in FIG. 5 is repeatedly executed. In the description of this operation example, only the storage battery 21 is used as an example. Further, in this operation example, the five storage batteries 21 shown in FIG. 6A are managed and the request for power adjustment is responded to. Further, it is assumed that the request for power adjustment received by the receiving unit 122 is a request for demand reduction (discharge) with a requested power of 4 hours and a requested power of 5 kW. Further, it is assumed that each storage battery 21 is not charged or discharged at the baseline.

FIG. 6 shows an example of charging / discharging control of five storage batteries 21 having consumer facility IDs “A” to “E” when the request for power adjustment is a request for demand reduction. FIG. 6A shows the available output (kW) and capacitance (kWh) before (ie, at baseline) charge / discharge control is performed in response to a request for power adjustment. Here, the output (kW) is the maximum discharge power that can be output, and the capacity (kWh) is the remaining capacity. FIG. 6B shows the selection order when the five storage batteries 21 shown in FIG. 6A are sorted in descending order of available amount (storage battery charge / discharge capacity). In FIG. 6B, the selection order is lowered from the top to the bottom of the chart. Further, FIG. 6C shows estimated values of the output (kW) and the capacity (kWh) of each storage battery 21 30 minutes after the start of adjustment.

In the process shown in FIG. 5, when the receiving unit 122 receives the power adjustment request from the host control system 50 (“YES” in step S201), the storage battery control unit 124 (or the selection order determination unit 123) sets the adjustment start time. Wait until it becomes (repeated "NO" in step S202). When the adjustment start time is reached (“YES” in step S202), the selection order determination unit 123 acquires the storage state (remaining capacity, etc.) of each storage battery 21 or storage battery 31 (step S203).

Next, the selection order determination unit 123 sorts each storage battery 21 shown in FIG. 6A in descending order of available amount (capacity (kWh)) (step S204). In the example shown in FIG. 6, as shown in FIG. 6B, each storage battery 21 is sorted in the order of the consumer facility IDs “E”, “D”, “A”, “B” and “C”. ..

Next, the storage battery control unit 124 selects the storage battery 21 so as to exceed the requested power (5 kW) from the top in the sort order (step S205). In this example, in step S205, the storage battery control unit 124 selects the storage battery 21 of the consumer facility ID “E” and the storage battery 21 of “D” shown in FIG. 6 (b).

Next, the storage battery control unit 124 executes charge / discharge control of the selected storage battery 21 (step S206). In this example, the storage battery control unit 124 transmits a charge / discharge command instructing the consumer facility 20 of the selected first consumer facility ID “E” to discharge at a predetermined unit time of 3 kW, and also transmits a charge / discharge command. A charge / discharge command instructing the consumer facility 20 having the second consumer facility ID “D” to discharge at a predetermined unit time of 2 kW is transmitted. In this operation example, the unit time is an interval at which each storage battery 21 is re-sorted, and an interval at which the storage battery control unit 124 transmits a charge / discharge command. The unit time is set to a time shorter than the requested time. In this operation example, it is assumed that the unit time is 30 minutes.

Next, the storage battery control unit 124 determines whether or not the adjustment end time has been reached (step S207). When the adjustment end time is reached (“YES” in step S207), the control device 12 temporarily ends the process shown in FIG. 5, and starts the process shown in FIG. 5 again. On the other hand, when the adjustment end time has not been reached (“NO” in step S207), the storage battery control unit 124 determines whether or not the unit time has elapsed (step S208). If the unit time has not elapsed (“NO” in step S208), the storage battery control unit 124 again determines whether or not the adjustment end time has been reached (step S207).

When the unit time has elapsed (“YES” in step S208), the storage battery control unit 124 determines whether or not the predetermined time has elapsed (step S209). The predetermined time determined in step S209 corresponds to the time interval for acquiring the state of each storage battery 21 in step S203. This predetermined time is set longer than the unit time determined in step S208.

When the storage battery control unit 124 determines that the predetermined time has elapsed (“YES” in step S209), the selection order determination unit 123 determines the storage state (remaining capacity, etc.) of each storage battery 21 or storage battery 31 (predetermined power adjustment). (Example of the measured value of) is acquired (step S203). Then, the selection order determination unit 123 sorts each storage battery 21 in descending order of available amount (capacity (kWh)) (step S204). After that, in the same manner as described above, the storage battery control unit 124 executes the processes after step S205.

On the other hand, when the storage battery control unit 124 determines that the predetermined time has not elapsed (“NO” in step S209), the selection order determination unit 123 estimates the storage state (remaining capacity, etc.) of each storage battery 21 (step). S210). FIG. 6C shows an example of the estimation result. FIG. 6C is an example of the result of estimating the electricity storage state after a unit time (30 minutes in this example) has elapsed from the electricity storage state of FIG. 6B. The capacity of the storage battery 21 of the consumer facility ID "E" has changed from 9 kWh to 7.5 kWh by discharging 3 kW for 30 minutes. The capacity of the storage battery 21 of the consumer facility ID "D" has changed from 6 kWh to 5 kWh by discharging 2 kW for 30 minutes.

After the process of step S210, the selection order determination unit 123 sorts each storage battery 21 in descending order of the available amount (capacity (kWh)) estimated in step S210 (step S204). After that, in the same manner as described above, the storage battery control unit 124 executes the processes after step S205.

Through the above processing, when the power adjustment request is received, the selection order determination unit 123 determines the selection order of each storage battery according to each storage state (usable amount) at the baseline, and at every unit time. The selection order is updated based on each estimated value of the storage state (usable amount). Further, based on the selection order determined by the selection order determination unit 123, the storage battery control unit 124 selects one or a plurality of storage batteries to perform charge / discharge control so as to satisfy the request. Therefore, in this operation example, the storage batteries to be controlled can be selected in an appropriate selection order, so that the charging / discharging of a plurality of storage batteries can be effectively managed.

Next, another operation example of the control device 12 shown in FIG. 2 will be described with reference to FIG. 7. FIG. 7 is a flowchart showing another operation example of the control device 12 shown in FIG. The flowchart shown in FIG. 7 is a modification of a part of the flowchart shown in FIG. That is, the process of step S204 shown in FIG. 5 is changed to the process of step S204a shown in FIG. 7. The processing of the other steps is the same. In the operation example shown in FIG. 6, in step S204, the selection order determination unit 123 sorts each storage battery in descending order of available amount (capacity (kWh)). On the other hand, in the operation example shown in FIG. 7, in step S204a, the selection order determination unit 123 sorts each storage battery based on the SOC (State Of Charge; charge rate). In step S204a, the selection order determination unit 123 sorts in descending order of SOC when the power adjustment request is a demand reduction request, and sorts in ascending order of demand increase request. As a result of this sorting, the selection order of the storage battery located at the top is high. That is, in the operation example shown in FIG. 7, the selection order is determined by the selection order determination unit 123 for each storage battery and in the SOC order. The operations other than the processing in step S204a are the same as the operation examples described with reference to FIG.

Through the above processing, when the power adjustment request is received, the selection order determination unit 123 determines the selection order of each storage battery according to each storage state (charge rate) at the baseline, and stores electricity every unit time. The selection order is updated based on each estimated value of the state (charge rate). Further, based on the selection order determined by the selection order determination unit 123, the storage battery control unit 124 selects one or a plurality of storage batteries to perform charge / discharge control so as to satisfy the request. In this operation example, the storage batteries to be controlled can be selected in an appropriate selection order, so that the charging / discharging of a plurality of storage batteries can be effectively managed.

Next, with reference to FIG. 8, the advantages and disadvantages of the above-mentioned three types of selection order determination methods are compared. FIG. 8 summarizes the advantages and disadvantages of how to determine the three types of selection order (county unit order (Fig. 3), available amount order (Fig. 5), and SOC order (Fig. 7)). However, the content shown as a demerit is also a relative disadvantage when comparing the three types, and although the amount of processing is slightly larger, it is possible to add a process that cancels the disadvantage.

In order of county unit, there are merits of "use all storage batteries", "high fairness" and "small amount of calculation", "may not keep promises (output / time) with higher ranks" and "storage batteries". It may not be possible to use all the capacity. "

In order of available quantity, there is an advantage that "capacity calculation is easy", and there are disadvantages that "there is a possibility of being biased toward some large capacity storage batteries" and "sort calculation is required".

In order of SOC, there is a merit that "all storage batteries are likely to be usable", and there are demerits that "small capacity products may not be able to secure the required capacity depending on the unit time" and "sort calculation is required".

As described above, according to the present embodiment, a plurality of storage batteries can be bundled to respond to changes in power demand, and the storage batteries to be operated can be selected in an appropriate order. Therefore, a plurality of storage batteries can be used. It is possible to effectively manage charging and discharging.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and the design and the like within a range not deviating from the gist of the present invention are also included.

1: Storage battery group management system, 10: Power management device, 20, 30: Consumer facility, 21, 31: Storage battery, 12: Control device, 121: Power control unit, 122: Receiver unit, 123: Selection order determination unit, 124: Storage battery control unit (control unit)

Claims (6)

A device that manages the charge and discharge of each storage battery in a plurality of consumer facilities each having a storage battery.
A receiver that receives a power adjustment request from the parent aggregator at a predetermined request time, and a receiver.
In response to the request received by the receiving unit, a selection order determining unit that determines the selection order of each storage battery based on each storage state of the plurality of storage batteries at the baseline.
One or a plurality of the storage batteries are selected based on the selection order determined by the selection order determination unit for each predetermined unit time shorter than the requested time, and the charging / discharging of the selected storage batteries is applied to each customer facility. and a control unit for instructing Te,
The selection order determination unit sets a group consisting of one or a plurality of the storage batteries so as to satisfy the request, determines the selection order for each set group, and confirms the group that does not satisfy the request. In this case, a power management device that resets the group by allocating the storage battery that is not assigned to any of the groups to the group. A device that manages the charge and discharge of each storage battery in a plurality of consumer facilities each having a storage battery.
A receiver that receives a power adjustment request from the parent aggregator at a predetermined request time, and a receiver.
In response to the request received by the receiving unit, a selection order determining unit that determines the selection order of each storage battery based on each storage state of the plurality of storage batteries at the baseline.
One or a plurality of the storage batteries are selected based on the selection order determined by the selection order determination unit for each predetermined unit time shorter than the requested time, and the charging / discharging of the selected storage batteries is applied to each customer facility. Equipped with a control unit to instruct
The selection order determination unit sets a group consisting of one or a plurality of the storage batteries so as to satisfy the request, determines the selection order for each set group, and confirms the group that does not satisfy the request. If so, dismantle one of the groups and reconfigure the group.
Power management device. The power management device according to claim 1 or 2 , wherein the selection order determination unit changes the selection order as necessary based on a predetermined measured value related to power adjustment for each of the plurality of unit times. The power management device according to any one of claims 1 to 3 , wherein the control unit instructs each consumer facility to charge / discharge with the rated power of each of the selected storage batteries. It is a method of managing the charge / discharge of each storage battery in a plurality of consumer facilities each having a storage battery.
The receiver receives the power adjustment request from the parent aggregator at the specified request time, and receives the request for power adjustment.
The selection order determination unit determines the selection order of each storage battery based on each storage state of the plurality of storage batteries at the baseline in response to the request received by the reception unit.
The control unit selects one or more of the storage batteries based on the selection order determined by the selection order determination unit for each predetermined unit time shorter than the requested time, and charges and discharges the selected storage batteries to each demand. Instruct the home facility ,
The selection order determination unit sets a group consisting of one or a plurality of the storage batteries so as to satisfy the request, determines the selection order for each set group, and confirms the group that does not satisfy the request. In this case, a power management method for resetting the group by allocating the storage battery that is not assigned to any of the groups to the group. It is a method of managing the charge / discharge of each storage battery in a plurality of consumer facilities each having a storage battery.
The receiver receives the power adjustment request from the parent aggregator at the specified request time, and receives the request for power adjustment.
The selection order determination unit determines the selection order of each storage battery based on each storage state of the plurality of storage batteries at the baseline in response to the request received by the reception unit.
The control unit selects one or more of the storage batteries based on the selection order determined by the selection order determination unit for each predetermined unit time shorter than the requested time, and charges and discharges the selected storage batteries to each demand. Instruct the home facility,
The selection order determination unit sets a group consisting of one or a plurality of the storage batteries so as to satisfy the request, determines the selection order for each set group, and confirms the group that does not satisfy the request. If so, dismantle one of the groups and reconfigure the group.
Power management method.

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