JP7188867B2 - Power supply system and power supply method by remote group control of multiple storage batteries - Google Patents

Description

TECHNICAL FIELD The present invention relates to a power supply system and a power supply method for supplying power through a power system connected to a power plant and remotely controlling a plurality of storage batteries in a group.

In recent years, due to the liberalization and technological innovation of electric power, so-called virtual power plants (VPPs) have been developed that manage scattered renewable energy power generation facilities, storage batteries, and other equipment and power demand, and function like a single power plant. Plant) is attracting attention. More specifically, in this virtual power plant, each initiative of "energy creation" by renewable energy power generation facilities, "energy storage" by using storage batteries, and "energy saving" on the consumer side such as demand response, etc. Integrated control with energy management technology that makes full use of communication technology. For example, when electricity generated by power generation facilities increases and there is a surplus of electricity, it is possible to increase the charging of storage batteries in each household to increase demand. Demand can be reduced by implementing a demand response that curbs consumption. As a result, this VPP can be expected to bring benefits such as increased introduction of renewable energy, further energy conservation, and promotion of load leveling.

As such an energy management technology, there is an energy management system disclosed in Patent Document 1, for example. In the energy management system disclosed in this Patent Document 1, areas and towns to which power is supplied are managed by grouping them into layers according to a theoretical hierarchical structure based on the respective distribution systems that make up the distribution network. Implement energy management such as applying the optimum load according to changes in the amount of power generated by light and wind power.

Japanese Unexamined Patent Application Publication No. 2014-113002

By the way, in recent years, while there has been a growing demand to increase the ratio of renewable energy power generation, the need to maintain a balance between power supply and demand has led to restrictions on the amount of power generated by natural energy sources such as solar power generation. "Output control" may be implemented. In other words, in resource energy power generation such as thermal power generation, the amount of energy lost and the time required to increase or decrease the amount of power supply are large. limit the supply of electricity from renewable energy sources.

However, output control of renewable energy power generation eliminates the original merits of renewable energy power generation, such as reducing power generation costs and CO2 emissions, and runs counter to the social demand for the spread of renewable energy. It is.

Therefore, the present invention solves the above-mentioned problems, avoiding output suppression of renewable energy power generation, remotely controlling multiple storage batteries in a group, suppressing demand, power plant operating reserve power within the grid It is an object of the present invention to provide a power supply system and a power supply method that enable effective use of renewable energy by sharing power storage facilities scattered about.

In order to solve the above problems, the present invention supplies electric power through a power system connected to first and second power plants, remotely controls a plurality of storage batteries in a group ,
The second power plant receives the output control received from the first power plant by the aggregator, and makes a plurality of storage batteries bear the capacity V2, which is a part of the capacity V1 that requires output control, and this capacity V2. A power supply system that distributes the remaining capacity V3 after subtracting from the aggregator to the second power plant as a rewritten output control ,
a plurality of power storage devices connected to the power system and installed for each power demand unit;
a plurality of control devices provided for each demand unit and controlling charging of each power storage device or discharging from the power storage device to a load in each demand unit;
a control instruction acquisition unit that acquires a control instruction that instructs adjustment of power supply, which is sent from the first power plant to the second power plant;
a management database for accumulating information about the plurality of control devices by classifying the control devices into predetermined groups according to attributes including categories corresponding to charging/discharging speed capability of each power storage device;
In accordance with the content of the control instruction, the management database is referenced to create a schedule for charging or discharging the storage battery in units of the predetermined group and based on the charge/discharge amount per unit time of each power storage device. and a group management unit that performs control according to the schedule ,
In the management database, priority is assigned to each group,
Allocate to groups from the capacity V2 in the order of priority
It is characterized by

In addition, the present invention supplies power through a power system connected to the first and second power plants, remotely controls a plurality of storage batteries in a group,
The second power plant receives the output control received from the first power plant by the aggregator, and makes a plurality of storage batteries bear the capacity V2, which is a part of the capacity V1 that requires output control, and this capacity V2. A power supply method for distributing the remaining capacity V3 after subtracting from the aggregator to the second power plant as rewritten output control ,
A plurality of power storage devices installed for each power demand unit are connected to the power system, and charging of each power storage device or discharging from the power storage device to a load for each demand unit is controlled for each demand unit. installing a control device that performs
a step of classifying the control devices into predetermined groups according to attributes including a category corresponding to the charging/discharging speed capability of each power storage device and storing the information on the plurality of control devices in a management database;
a step of obtaining, in a control instruction obtaining unit, a control instruction instructing adjustment of power supply, which is sent from the first power plant to the second power plant;
The group management unit refers to the management database according to the content of the control instruction and based on the charge/discharge amount of each power storage device per unit time, and charges or discharges the storage battery in units of the predetermined group. creating a schedule of and performing control according to the schedule ;
In the management database, priority is assigned to each group,
Allocate to groups from the capacity V2 in the order of priority
It is characterized by

According to these inventions, in accordance with the content of the control instruction sent from the first power plant to the second power plant, a plurality of power storage devices installed for each power demand unit are arranged in predetermined group units. can create a schedule for charging or discharging the storage battery, and remotely control the battery according to the schedule. As a result, a plurality of scattered storage batteries can be regarded and used as if they were one or more huge storage batteries, and when a sudden fluctuation in power demand occurs, the power demand corresponding to the fluctuation can be handled on a group-by-group basis. can be absorbed by charging/discharging the second storage battery device to avoid output control for the second power plant (for example, photovoltaic power generation).

In the above invention, the control device further has a function of notifying the group management unit of the state of charging and discharging of each power storage device provided in each demand unit as performance information, and the group management unit performs the control It is preferable that performance information from the devices is accumulated in the management database, and control is performed in units of the predetermined group based on the aggregated performance information. In this case, control can be performed by creating a fine-grained schedule that reflects the actual information of charging and discharging of each power storage device.

In the above invention, a priority is given to each group in the management database, and the group management unit has a recalculation function of re-executing the aggregation based on performance information and performing control on a group-by-group basis. It is preferable to have In this case, by recalculating the schedule according to the priority of each group, it is possible to create a more detailed schedule that reflects the actual situation and perform control.

In the above invention, the attribute includes a category corresponding to the charging/discharging speed capability of each power storage device, and the group management unit performs the control based on the charge/discharge amount per unit time of each power storage device. is preferred. In this case, it is possible to create a schedule that matches the time required for charging and discharging according to the content of the control instruction.

As described above, according to these inventions, by avoiding output suppression of renewable energy power generation, demand suppression, and power plant operating reserve capacity by sharing power storage facilities scattered in the grid, renewable energy can be generated. It is possible to make effective use of energy, and output control of renewable energy power generation can make the most of the original merits of renewable energy power generation, such as reducing power generation costs and CO2 emissions, and promoting the spread of renewable energy. It is possible to respond to the social demand to let

More specifically, in the present invention, prediction and real-time correction in consideration of conditions such as time of day, type of residence, past power usage, current power usage, weather, availability of rechargeable batteries, charging speed, etc. Grouping is performed systematically, which enables efficient allocation of resources. In addition to regional grouping, individual storage batteries and individual power plants can be freely grouped into a plurality of groups. Furthermore, a plurality of storage batteries scattered in an area can be treated as if they were one or more huge storage batteries, and one or more huge storage batteries can be treated as a plurality of scattered small storage batteries to perform group control. By freely performing various groupings, it is possible to supply power that meets the needs of the region.

1 is a conceptual diagram showing the overall configuration of a power supply system according to an embodiment; FIG. It is a block diagram showing the internal configuration of each device of the power supply system according to the embodiment. 1 is a block diagram showing the configuration and operation of a power supply system according to an embodiment; FIG. FIG. 4 is an explanatory diagram showing instruction distribution management for storage batteries in the power supply system according to the embodiment; It is a table showing storage battery management in the power supply system according to the embodiment. It is a table showing storage battery management in the power supply system according to the embodiment. It is a table showing storage battery management in the power supply system according to the embodiment.

(Overall configuration of power supply system)
An embodiment of a power supply system according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a conceptual diagram showing the overall configuration of the power supply system according to this embodiment, and FIG. 2 is a block diagram showing the internal configuration of each device constituting the power supply system according to this embodiment. FIG. 3 is a block diagram showing the configuration and operation of the power supply system according to this embodiment.

As shown in FIG. 1, the power supply system according to the present embodiment is a power supply system that supplies power to each demand unit through a power system connected to first and second power plants. , resource energy power plants operated by the electric power company 2 as the first power plants, and renewable energy power plants such as mega solar power plants operated by the power generator 3 as the second power plants. In addition, in the present embodiment, the demand units 5 include a large-scale facility 54 and a medium-scale facility 51 equipped with an industrial power storage system, a general house 52 equipped with a residential power storage system, and an electric vehicle (EV). EV power station 53 with 531, etc. are included.

In addition, a power generation business operator 3 and an aggregator 4 that manages each demand unit 5 in an integrated manner are arranged. The management system 4 controls the power storage for the demand unit 5 and the output control for the power generator 3 . In this embodiment, the electric power company 2 supplies power by resource energy power generation such as thermal power generation, predicts the power consumption of the next day, and if there is a possibility that a sudden change in power demand will occur, Distribute output control to limit the power supply to the power generator 3 .

In this embodiment, the conventional power generator 3 receives output control directly from the electric power company 2, and the aggregator 4 receives the output control V1, and the capacity V1 required for output control is converted to the capacity V1 required for output control by the power storage control of this system. The capacity V2, which is a part of V1, is borne by each power storage device in the system, and the remaining capacity V3 after subtracting the capacity V2 is transferred from the aggregator 4 to the power generator 3 as rewritten output control. To distribute. The aggregator 4 performs control so that each storage battery in the system is discharged in advance to ensure that the amount of power generated by the sunlight on the next day can be absorbed according to the content of the output control V1 from the electric power company 2 .

Specifically, as shown in FIG. 2 , the electric power company 2 is provided with an electric power server 21 , and the power generation of the electric power company 2 is managed by the electric power server 21 . The power server 21 is connected with the aggregator 4 via the communication network 63 .

The aggregator 4 includes an aggregator system server 41 and a power storage system server 42 .

The aggregator system server 41 is connected to the power server 21 of the power company via the communication network 63 . The aggregator system server 41 is also connected to the power generation company 3 via a communication network 61 . The power generation company 3 includes a photovoltaic panel 32 and a monitoring terminal 31 that controls and manages the photovoltaic panel 32 . On the other hand, the power storage system server 42 of the aggregator 4 is connected to each control device of each demand unit 5 via a communication network 62 .

Then, as shown in FIGS. 2 and 3, the power system 60 of the power company 2 is connected to the photovoltaic power plant of the power generation company 3 and the demand units 51 to 54, and the power company 2 and the power generation company 3 , each demand unit 5 is supplied with power. In addition, control-related data is transmitted from the electric power company 2 through the aggregator system to the power generator 3 and the control device of each demand unit 5, and information from the power generator 3 and the demand unit 5 is accumulated in the aggregator 4. It has become so.

(Configuration of each device)
Next, the configuration of each device described above will be described. It should be noted that the term "module" used in the description refers to a functional unit configured by hardware such as a device or equipment, or software having such functions, or a combination thereof, to achieve a predetermined operation. .

(1) Device Configuration on the Aggregator Side As described above, the aggregator 4 includes the aggregator system server 41 and the power storage system server 42 . The aggregator system server 41 includes, as shown in FIG. It has On the other hand, the power storage system server 42 is a server device that performs control according to the schedule generated by the aggregator system server 41 , and includes a data acquisition unit 421 and a storage battery control unit 422 .

The control instruction schedule download unit 411 acquires the control instruction sent from the electric power company 2, which is the first power plant, to the power generator 3, which is the second power plant, on behalf of the power generator 3. It is an instruction acquisition unit, and specifically, downloads a control instruction schedule from the power server 21 periodically. This downloaded control instruction schedule is transferred to the analysis unit 416 .

The data acquisition unit 413 on the aggregator system server 41 side is a module that acquires the power generation status of the power generation business operator 3 that is a management target as power generation performance information, and the performance information acquired by this data acquisition unit 413 is Stored in management database 414 . On the other hand, the data acquisition unit 421 on the power storage system server 42 side is a module that acquires the status of charging and discharging of each power storage device provided in each demand unit as performance information. Performance information is accumulated in the management database 414 .

The management database 414 is a management database that stores information about a plurality of control devices by classifying the control devices into predetermined groups according to their attributes. In the management database 414, a priority is assigned to each group, and the attributes of each demand unit include a category according to the charging/discharging speed capability of each power storage device. As shown in FIG. 3, the data stored in this management database 414 includes a schedule information DB 414a for power plants, a schedule information DB 414c for each demand unit, a block ID DB 414d for groups, a site master DB 414e, each demand A storage battery master DB 414f and a product master DB 423h, which are information related to storage batteries and facilities provided in units, are included. The site master DB 414e and the storage battery master DB 414f can be managed from the master management screen 415a.

In this embodiment, the data accumulated in the management database 414 are based on conditions such as time of day, residence type, past power usage, current power usage, weather, availability of rechargeable batteries, and charging speed. Predictions and real-time corrections are logically grouped and prioritized to enable efficient resource allocation. In addition, these data are not limited to regional grouping, and can be freely and multiplely grouped for individual storage batteries and individual power plants. Group control can be performed by regarding one or more huge storage batteries as if they were one or more huge storage batteries, and by regarding one or more huge storage batteries as a plurality of scattered small storage batteries. ing.

The management database 414 also includes a power plant performance DB 414b and a storage battery performance DB 414g that accumulate performance information uploaded from power plants and demand units to be managed.

The analysis unit 416 refers to the management database 414 in accordance with the content of the control instruction, creates a schedule for charging or discharging the power storage device for each predetermined group in order to select a power storage destination, and performs control according to the schedule. It is a module that does Specifically, the analysis unit 416 aggregates the performance information accumulated in the management database 414 and performs analysis based on the aggregated performance information. This analysis is performed according to a predetermined application logic 416a, and the schedule rewriting unit 412 rewrites the schedule based on the analysis result. Schedule rewriting section 412 is a module that rewrites the schedule based on the analysis result of analysis section 416 , and transfers the rewritten schedule to charge/discharge instruction section 415 . In this embodiment, the analysis unit 416 performs control based on the charge/discharge amount per unit time of each power storage device.

More specifically, the analysis unit 416 acquires the photovoltaic power generation equipment information and the storage battery equipment information accumulated in the management database 414, refers to the setting items included in this information, and issues instructions to each facility. to execute control. The photovoltaic power generation facility information includes priority, presence/absence of additional services, guaranteed capacity, and area code. The power storage facility information includes aggregator control target, area code, and group ID.

Then, using the photovoltaic power generation equipment information and the storage battery equipment information, first, the total guaranteed capacity of the target area and the status of the storage battery are confirmed. As a result of this confirmation, the guaranteed capacity is allocated from the total capacity in the order of the storage battery groups in order of additional service settings and priority. Then, the remainder is distributed to all in order of priority. In the example shown in FIG. 4, within the same suppression target, the priority to instruct by looking at the group is determined, the storage battery with the highest priority is selected for the guaranteed amount, and the storage battery 1 to 3 is selected for the base amount. , are allocated sequentially. In the figure, the solar power generation facility 3 cannot be instructed because there is no storage capacity left, and the solar power generation facility 4 does not have a storage battery with the same area code. I am unable to give instructions. Examples of allocation of storage batteries based on such analysis are shown in FIGS. 5 to 7. FIG.

Further, in this embodiment, the analysis unit 416 has a recalculation function that re-executes aggregation based on the performance information and performs control in group units. be rewritten.

The charge/discharge instruction unit 415 controls each storage battery through the storage battery control unit 422 of each storage system server 42 based on the schedule generated by the schedule rewriting unit 412 . The storage battery control unit 422 is a module that sends a control instruction to the control unit for each demand unit through the communication network 62 according to the charge/discharge instruction unit 415 .

(3) Device configuration on the side of the photovoltaic power plant The photovoltaic power plant of the power generation operator 3, which is the second power plant, is a photovoltaic power plant in this embodiment, and in the example shown in FIG. 31 , a solar panel (PV: Photovoltaic) 32 , a power conditioner (PCS: Power Conditioning System) 33 and a cubicle 34 .

The monitoring terminal 31 acquires the control instruction d11 from the aggregator system server 41, and according to the control instruction schedule, controls the on/off of power generation and the amount of power generation. 41 is a control device.

The photovoltaic power generation panel 32 is a power generation device that directly converts sunlight into electric power using a solar cell, and is controlled by the monitoring terminal 31 so that power generation can be turned on/off and the amount of power generation can be adjusted. . The power conditioner 33 is a transforming device that converts the electricity generated by the photovoltaic panel 32 so that it can be used in an environment such as a home, and converts direct current flowing from the photovoltaic panel 32 into alternating current. The cubicle 34 is a transformer facility that transforms the electricity received from the power conditioner 33 to a predetermined voltage and supplies it to each demand unit through the power system 60 .

(2) Device configuration on the demand unit side The general house 52 is a general household scale demand facility equipped with photovoltaic power generation equipment, and in the example shown in FIG. (EIG) 52b, power line communication (PLC: Power Line Communication) 52c, solar panel (PV: Photovoltaic) 52c, power conditioners (PCS: Power Conditioning System) 52d, 52e, distribution board 522, storage battery 523.

The control device 521 is a module that manages and controls power generation, power storage, and power consumption loads in each home, and is provided for each demand unit (here, each home). control. The control device is connected to the power storage system server 42 through the communication network 62, transmits data to and receives data from the power storage system server 42 through the communication network 62, and receives instructions and controls from the power storage system server 42, for example. Or, send the performance information in each household. The control device 521 transmits control signals to the EIG 52b and PLC 52c through the HUB 52a, and collects information from these EIG 52b and PLC 52c.

The storage battery 523 is a power storage device that can store and use electricity, and can be repeatedly charged and discharged. Here, it is connected to the distribution board 522 and the control device 521 via the power conditioner 52e, and according to the control of the control device 521, input/output to the distribution board 522 is switched to control charging and discharging. The power conditioner 52d is a transforming device that converts the electricity generated by the photovoltaic panel 52c so that it can be used in a general household environment. , and is controlled based on control signals from the EIG 52b and PLC 52c, and outputs information on the power conversion results to these EIG 52b and PLC 52c. The distribution board 522 is a device that accommodates various breakers such as a circuit breaker for wiring and an earth leakage circuit breaker, a power meter (power meter), a control device such as a remote control relay and a timer. The trunk line supplied from is divided finely with a branch breaker and distributed to the load in the house.

An energy measurement display unit (EIG: Energy Intelligent Gateway) 52b is a device that measures and manages the power generation and consumption of the entire facility. Power line communication (PLC: Power Line Communication) 52c is a facility that communicates using a power line, and transmits and receives data through the existing power line between the power conditioner 52e and the control device 521, and the amount of power used and power generation The amount is notified to the power storage system server 42 through the control device 521 . A solar panel (PV: Photovoltaic) 52 c is a home-use solar power generation facility, and based on control by a control device 521 , generated power is supplied to a power consumption load 524 through a distribution board 522 .

The EV power station 53 is a facility having an EV power station for charging an electric vehicle (EV), and in the example shown in FIG. , a relay box 53d, a power supply device (V2H: Vehicle to Home) 53e, a distribution board 532, and an electric vehicle (EV) 533 as a storage battery.

The control device 531 is a module that manages and controls power generation in each home, power storage of the electric vehicle, and power consumption load. Alternatively, it controls discharging from the power storage device to each load. The control device 531 is connected to the power storage system server 42 through the communication network 62, transmits and receives data to and from the power storage system server 42 through the communication network 62, and receives instructions and controls from the power storage system server 42, for example. Also, the usage status and power storage status of the electric vehicle 533 and performance information at each home are transmitted. The control device 531 transmits control signals to the relay box 53d through the wireless router 53a and the transmission/reception unit 53c, and collects information from the relay box 53d. The transmission/reception unit 53c is a data relay that interconnects the relay box 53d, the indoor remote controller 53b, and the controller 531, and transmits control by the controller 531 and remote operation by the indoor remote controller 53b to the relay box 53d.

The power supply device 53e is a device that supplies power from the power system 60 to the electric vehicle 533 and also supplies power from the electric vehicle 533 to a power consumption load 534 in the home. The electric vehicle 533 is a vehicle that runs on electric power, and is equipped with a storage battery. Electricity can be stored in the storage battery and the stored power can be used at home. Here, it is connected to the distribution board 522 and the control device 521 via the power supply device 53e, and according to the control of the control device 521, the input and output to the distribution board 522 are switched, and the charging and discharging of the onboard storage battery is controlled. . The distribution board 532 is a device that accommodates various breakers such as circuit breakers and earth leakage circuit breakers, power meters (power meters), remote control relays, timers, and other control devices. The trunk line supplied from is divided finely with a branch breaker and distributed to the load in the house.

The medium-scale facility 51 is a medium-scale demand facility, and in the example shown in FIG.

The control device 511 is a module that manages and controls power generation, power storage, and power consumption loads in the facility, and controls charging of the storage battery 513 or discharging from the power storage device to each load. The control device 511 is connected to the power storage system server 42 through the communication network 62, transmits and receives data to and from the power storage system server 42 through the communication network 62, and receives, for example, instructions and controls from the power storage system server 42. or send performance information in the facility. The control device 511 transmits control signals to the storage battery 513 and collects information from the storage battery 513 .

The storage battery 513 is a medium-sized power storage device that can store and use electricity, and here, it incorporates a power conditioner (PCS) and converts the stored electricity so that it can be used in a general household environment. It can be output to the distribution board 512 . The distribution board 512 is a device that accommodates various breakers such as a circuit breaker for wiring and an earth leakage circuit breaker, a power meter (power meter), a control device such as a remote control relay and a timer. The main line to be supplied is subdivided by a branch breaker and distributed to the loads within the facility.

The large-scale facility 54 is a large-scale demand facility, and in the example shown in FIG. 54 c , a power conditioner (PCS: Power Conditioning System) 54 d , a distribution board 542 , and a plurality of storage batteries 543 .

The control device 541 is a module that manages and controls power generation, power storage, and power consumption loads within the facility, and controls charging of a plurality of storage batteries 543 or discharging from power storage devices to each load. The control device 541 is connected to the power storage system server 42 through the communication network 62, transmits and receives data to and from the power storage system server 42 through the communication network 62, and receives, for example, instructions and controls from the power storage system server 42. or send performance information in the facility. The control device 541 transmits control signals to the EMS 54b and FBCS 54c through the HUB 54a, and collects information from these EMS 54b and FBCS 54c. The EMS 54b is an energy management system in the facility, and the FBCS 54c is a facility that manages and controls the storage battery group and the PCS in an integrated manner.

The storage battery 543 is a plurality of power storage devices that can store and use electricity, is centrally controlled by the EMS 54b and the FBCS 54C, and can be repeatedly charged and discharged. Here, it is connected to the distribution board 542 and the control device 541 via the power conditioner 54d, and according to the control of the control device 541, input/output to the distribution board 542 is switched to control charging and discharging. The power conditioner 54d is a power transformation device that converts the electricity stored in the storage battery 543 so that it can be used in the environment of the facility. The distribution board 542 is a device containing various circuit breakers such as circuit breakers and earth leakage circuit breakers, power meters (power meters), remote control relays, timers and other control devices. The branching breaker divides the main line into small pieces and distributes them to the load in the house.

(Operation of power supply system)
The power supply method of the present invention can be implemented by operating the power supply system described above.

First, the control instruction schedule download unit 411 acquires a control instruction sent from the electric power company 2, which is the first power plant, to the power generation business operator 3 (S01). Acquisition of control instructions by the control instruction schedule download unit 411 is executed based on aggregation logic.

This control instruction from the power company 2 is analyzed in real time by the aggregation logic 416a of the analysis unit 416 (S02), and a schedule for the power generator 3 and each demand unit 5 is generated. The generated power plant schedule is stored in the schedule information 414a, and the demand unit schedule is stored in the schedule information DB 414c.

In step S03, the schedule rewriting unit 412 converts the power station schedule stored in the DB 414a into a control instruction d11 that matches the format of each power station (S031). is transmitted to the monitor terminal 31 (S04). Transmission of this control instruction is performed periodically, for example, at intervals of one minute. Upon receiving the control instruction d11, the power generator 3 controls the power generation equipment in real time according to the control instruction (S05), and supplies the generated power to the power system 60 (S06).

More specifically, in the power generation business operator 3, the monitoring terminal 31 acquires the control instruction d11 from the aggregator system server 41 and controls power generation on/off and power generation amount according to the control instruction schedule. According to the control by the monitoring terminal 31, the photovoltaic power generation panel 32 adjusts the on/off of power generation and the amount of power generation. After transforming the electricity to a predetermined voltage, it is supplied to each demand unit through the power system 60 . The power supply performance is captured in the power station performance DB 414b, which is transmitted to the aggregator system server 41 as performance information d12 by the monitoring terminal 31 (S032).

On the other hand, in step S03, after the demand unit schedule accumulated in the DB 414c is acquired by the power storage system server 42, the schedule rewriting unit 412 outputs a control instruction according to the format of each demand unit (here, CSV file format). d21 (S033). At this time, the analysis unit 416 refers to each data in the management database 414 according to the content of the control instruction, limits the amount of power consumption, and controls charging or discharging of the storage battery in units of a predetermined group. A schedule is created and converted into a control instruction for each group. Each created control instruction is sent to the control device of each demand unit (S04), and each demand unit 5 that has received the control instruction d21 sets the upper limit of power consumption and charges each storage battery according to the control instruction. Or control the discharge (S05 and S06).

In this step S03, the data accumulated in each of the databases 414a-g and the databases 423c-h are referred to. Data such as schedules in each of these databases are forecasted and real-time considering conditions such as time of day, type of residence, past power usage, current power usage, weather, availability of rechargeable batteries, charging speed, etc. are logically grouped and prioritized by the correction of , which enables efficient resource allocation. In addition, these data are not limited to regional grouping, and individual storage batteries and individual power plants can be freely grouped into multiple groups. and one or more huge storage batteries are regarded as a plurality of scattered small storage batteries for group control.

More specifically, in steps S05 and S06, in general house 52, control device 521 receives instruction control from power storage system server 42 through communication network 62, transmits control signals to EIG 52b and PLC 52c through HUB 52a, manage and control the power generation, storage and power consumption loads of In the storage battery 523, input/output to/from the distribution board 522 is switched under the control of the control device 521, and charge/discharge is controlled. The distribution board 522 subdivides the main line supplied from the PCS 52d, 52e, the power system 60, etc., with a branch breaker, and distributes it to the indoor loads. In addition, in the solar panel (PV: Photovoltaic) 52 c in the general house 52 , power generated is supplied to the power consumption load 524 through the distribution board 522 under the control of the control device 521 .

At this time, in the general house 52, the energy measurement display unit (EIG: Energy Intelligent Gateway) 52b measures and manages the power generation and consumption status of the entire facility, and the power line communication (PLC: Power Line Communication) 52c through the power line, Data is transmitted and received between the power conditioner 52e and the control device 521, and the amount of power used and the amount of power generated is notified to the power storage system server 42 as performance information d22 through the control device 521. FIG. The performance information d22 notified to the storage system server 42 is associated with the site master DB 423e, the storage battery master DB 423f, and the product master DB 423h, converted into a predetermined data format (S034), and accumulated in the storage battery performance DB 423g. . The database on the power storage system server 42 side is synchronized with the database on the aggregator system server 41 side, and the data accumulated in each database on the power storage system server 42 side is handled by the aggregator system server 41 side. reflected in each database that

In the EV power station 53, the control device 531 receives instructions and controls from the power storage system server 42 through the communication network 62, and the power supply device 53e and the distribution board 532 are transmitted through the transmission/reception unit 53c and relay box 53d. The charging/discharging by the power supply device 53e and the input/output to/from the distribution board 522 are switched to control the charging/discharging of the storage battery mounted on the vehicle. The distribution board 532 subdivides the main line supplied from the power supply device 53e and the power system 60 with a branch breaker and distributes it to the indoor loads. At this time, the content of control from the control device 531 may be displayed on the indoor remote controller 53b as a message or the like to prompt the user to perform remote operation. At this time, in the EV power station 53, the control device 531 collects information from the relay box 53d through the transmission/reception unit 53c, and sends it to the server 41 for the aggregator system as usage status and power storage status of the electric vehicle 533, and performance information at home. Send.

In the medium-scale facility 51, the control device 511 receives instructions and controls from the power storage system server 42 through the communication network 62, transmits control signals directly to the storage battery 513 and the distribution board 512, and controls charging and discharging by the storage battery 513. At the same time, by switching the distribution board 512, the main line supplied from the storage battery 513 and the electric power system 60 is finely divided by the branch breaker and distributed to the loads within the facility. In conjunction with this, in the medium-scale facility 51, the control device 511 collects information from the relay box 53d through the transmission/reception unit 53c, and uses the electric vehicle 533 as usage status, power storage status, and home performance information as the server for the aggregator system. 41.

In the demand unit 54, the control device 541 receives instruction control from the power storage system server 42 through the communication network 62, and transmits control signals to the EMS 54b and the FBCS 54c through the HUB 54a. Under the control of the control device 541, the EMS 54b performs energy management within the facility, and the FBCS 54c manages and controls the storage battery group and the PCS in an integrated manner. The storage battery 543 is controlled by the EMS 54b and the FBCS 54C to switch the input/output to/from the distribution board 542 and control charging/discharging. Distribute to loads within separate facilities. Along with this, in the demand unit 54, the controller 541 collects information from the EMS 54b and the FBCS 54c, and transmits the collected information to the aggregator system server 41 as performance information in the facility.

(action/effect)
According to the embodiment described above, according to the content of the control instruction sent from the power company 2 to the power generation business operator 3, the aggregator 4 stores a plurality of power storage devices installed for each power demand unit. It is possible to create a schedule for charging or discharging the storage battery for each group, and remotely control the storage battery according to the schedule. As a result, a plurality of scattered storage batteries can be regarded and used as if they were one or more huge storage batteries, and when a sudden fluctuation in power demand occurs, the power demand corresponding to the fluctuation can be handled on a group-by-group basis. can be absorbed by charging and discharging the storage battery device, and the output control for the power generator 3 can be avoided.

In this embodiment, it is logically grouped by prediction and real-time correction considering conditions such as time of day, residence type, past power usage, current power usage, weather, availability of rechargeable batteries, charging speed, etc. This enables efficient allocation of resources. In addition to regional grouping, individual storage batteries and individual power plants can be freely grouped into a plurality of groups. Furthermore, a plurality of storage batteries scattered in an area can be treated as if they were one or more huge storage batteries, and one or more huge storage batteries can be treated as a plurality of scattered small storage batteries to perform group control. By freely performing various groupings, it is possible to supply power that meets the needs of the region.

As a result, according to the present embodiment, by avoiding output suppression of renewable energy power generation, demand suppression, power plant operating reserve capacity by sharing the power storage equipment scattered in the grid, renewable energy can be effectively used. The output control of renewable energy power generation can make the most of the inherent merits of renewable energy power generation, such as reducing power generation costs and reducing _CO2 emissions, and promotes the spread of renewable energy. It can meet social demands.

d11, d21... control instruction d12, d22... performance information 2... power company 3... power generation company 4... aggregator 5... demand unit 21... power server 31... monitoring terminal 32... photovoltaic panel 33... power conditioner 34... cubicle 41 Server for aggregator system 42 Server for power storage system 51 to 54 Demand unit 52 Ordinary house 53 EV power station 54 Large-scale facility 60 Electric power system 61 to 63 Communication network 411 Control instruction schedule download unit 412 Schedule rewriting unit 413 Data acquisition unit 414 Management database 415 Charge/discharge instruction unit 416 Analysis unit 421 Data acquisition unit 422 Storage battery control unit

Claims (4)

Power is supplied through a power system connected to the first and second power plants, and a plurality of storage batteries are remotely group-controlled,
The second power plant receives the output control received from the first power plant by an aggregator, and a plurality of storage batteries are made to bear the capacity V2, which is a part of the capacity V1 required for the output control, and this capacity V2 A power supply system that distributes the remaining capacity V3 after subtracting the minute from the aggregator to the second power plant as rewritten output control,
a plurality of power storage devices connected to the power system and installed for each power demand unit;
a plurality of control devices provided for each demand unit and controlling charging of each power storage device or discharging from the power storage device to a load in each demand unit;
a control instruction acquisition unit that acquires a control instruction that instructs adjustment of power supply, which is sent from the first power plant to the second power plant;
a management database for accumulating information about the plurality of control devices by classifying the control devices into predetermined groups according to attributes including categories corresponding to charging/discharging speed capability of each power storage device;
In accordance with the content of the control instruction, the management database is referenced to create a schedule for charging or discharging the storage battery in units of the predetermined group and based on the charge/discharge amount per unit time of each power storage device. and a group management unit that performs control according to the schedule,
In the management database, priority is assigned to each group,
A power supply system, wherein the capacity V2 is allocated to groups in the order of priority. The control device further has a function of notifying the group management unit of the state of charging and discharging of each power storage device provided for each demand unit as performance information,
2. The group management unit according to claim 1, wherein the group management unit accumulates performance information from the control device in the management database, and performs control in units of the predetermined group based on the aggregated performance information. power supply system. 3. The power supply system according to claim 2 , wherein the group management unit has a recalculation function of re-executing the aggregation based on the performance information and performing control on a group-by-group basis. Power is supplied through a power system connected to the first and second power plants, and a plurality of storage batteries are remotely group-controlled,
The second power plant receives the output control received from the first power plant by the aggregator, and makes a plurality of storage batteries bear the capacity V2, which is a part of the capacity V1 that requires output control, and this capacity V2. A power supply method for distributing the remaining capacity V3 after subtracting from the aggregator to the second power plant as rewritten output control,
A plurality of power storage devices installed for each power demand unit are connected to the power system, and charging of each power storage device or discharging from the power storage device to a load for each demand unit is controlled for each demand unit. installing a control device that performs
a step of classifying the control devices into predetermined groups according to attributes including a category corresponding to the charging/discharging speed capability of each power storage device and storing the information on the plurality of control devices in a management database;
a step of obtaining, in a control instruction obtaining unit, a control instruction instructing adjustment of power supply, which is sent from the first power plant to the second power plant;
The group management unit refers to the management database according to the content of the control instruction and based on the charge/discharge amount of each power storage device per unit time, and charges or discharges the storage battery in units of the predetermined group. creating a schedule of and performing control according to the schedule;
In the management database, priority is assigned to each group,
A power supply method, wherein the capacity V2 is allocated to the groups in the order of priority.

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