Power management system, power management device, power management method, and program

Abstract

This invention provides a power management system, power management device, power management method, and program that enable the creation of more accurate power plans through the coordination of two independent devices targeting different power markets. [Solution] The power management system comprises a first power management device that creates a first power plan, which is a plan of the amount of electricity for one or more distributed power sources and targets a first power market, and a second power management device that creates a second power plan, which is a plan of the amount of electricity for the same distributed power sources and targets a second power market different from the first power market. The first power management device performs a power forecast that predicts the amount of electricity for distributed power sources over a predetermined period in the future and transmits linked data based on the power forecast to the second power management device. The second power management device receives the linked data and creates a second power plan based on the linked data.

Description

[Technical Field]

[0001] The present disclosure relates to a power management system, a power management apparatus, a power management method, and a program. [Background Art]

[0002] Conventionally, a wholesale electricity market where electricity is traded for the purpose of efficient power supply and stable price is known. A power generation business operator that owns power generation facilities predicts the power generation amount of the power generation facilities in order to trade electricity for the next day and / or the current day in the wholesale electricity market. The power generation business operator creates a power generation sales plan based on the predicted power generation amount, and sells electricity based on the power generation sales plan. In such transactions in the wholesale electricity market, an apparatus (hereinafter referred to as a "supply-demand management apparatus") that predicts power supply and demand, predicts the power generation amount of power generation facilities, and supports the creation of a power generation sales plan is used.

[0003] On the other hand, as a market for trading electricity, a supply-demand adjustment market different from the wholesale electricity market is known. Roles are divided between a resource aggregator (RA) and an aggregation coordinator (AC), and AC mainly conducts transactions with the supply-demand adjustment market. RA is an adjustment business operator that concludes a VPP (Virtual Power Plant) service contract with a consumer or a power generation business operator and controls the amount of power of distributed power sources (such as power generation facilities and / or power storage facilities). AC is an adjustment business operator that aggregates the amount of power controlled by RA and directly conducts transactions with the supply-demand adjustment market. The adjustment business operator predicts the amount of power, creates a power adjustment plan, and sells adjustment capacity based on the power adjustment plan. Adjustment capacity refers to the function of controlling the increase or decrease of the amount of power of distributed power sources so as to maintain the power supply-demand balance. Adjustment capacity adjusts the amount of power by adjusting the output of power generation facilities, adjusting charging and discharging of power storage facilities, or suppressing power consumption of power demand facilities. In such transactions in the supply-demand adjustment market, an apparatus (hereinafter referred to as a "supply-demand adjustment apparatus") that predicts power supply and demand, predicts the power generation amount of power generation facilities contracted by the adjustment business operator, and supports the creation of a power adjustment plan is used (see Patent Document 1). [Prior Art Literature] [Patent Literature]

[0004] [Patent Document 1] Japanese Patent Publication No. 2021-174344 [Overview of the project] [Problems that the invention aims to solve]

[0005] Because supply and demand management devices and supply and demand adjustment devices target different electricity markets, they are operated as independent devices. Therefore, each device creates a power plan without considering data from other devices, which presents a challenge in creating an accurate power plan.

[0006] This disclosure provides a power management system, power management device, power management method, and program that enable the creation of more accurate power plans through the coordination of two independent devices targeting different power markets.

[0007] The power management system according to the first embodiment comprises a first power management device and a second power management device. The first power management device creates a first power plan, which is a plan of the amount of electricity for one or more distributed power sources and is intended for a first power market. The second power management device creates a second power plan, which is a plan of the amount of electricity for the same one or more distributed power sources and is intended for a second power market different from the first power market. The first power management device performs a power forecast, which predicts the amount of electricity for one or more distributed power sources over a predetermined period in the future, and transmits linked data based on the power forecast to the second power management device. The second power management device receives the linked data and creates a second power plan based on the linked data.

[0008] The power management device according to the second embodiment is a power management device that creates a first power plan, which is a plan of the amount of electricity for one or more distributed power sources and targets a first power market, and comprises a control unit and a communication unit. The control unit performs a power forecast to predict the amount of electricity for one or more distributed power sources and creates collaborative data based on the power forecast. The communication unit transmits the collaborative data to a second power management device that creates a second power plan, which is a plan of the amount of electricity for one or more distributed power sources and targets a second power market different from the first power market.

[0009] The third aspect of the power management method is a power management method performed by a first power management device that creates a first power plan, which is a plan for the amount of electricity for one or more distributed power sources and is aimed at a first power market, and a second power management device that creates a second power plan, which is a plan for the amount of electricity for the same one or more distributed power sources and is aimed at a second power market different from the first power market. The power management method includes the steps of: the first power management device performing a power forecast to predict the amount of electricity for one or more distributed power sources over a predetermined period in the future; the first power management device transmitting coordinated data based on the power forecast to the second power management device; the second power management device receiving the coordinated data; and the second power management device creating a second power plan based on the coordinated data.

[0010] The computer program according to the fourth embodiment is a computer program executed by a first power management device that creates a first power plan, which is a plan of the amount of electricity for one or more distributed power sources and targets a first power market. The computer program causes a computer to perform the steps of: performing a power forecast to predict the amount of electricity for one or more distributed power sources; creating linked data based on the power forecast; and transmitting the linked data to a second power management device. The second power management device is a device that creates a second power plan, which is a plan of the amount of electricity for one or more distributed power sources and targets a second power market different from the first power market. [Effects of the Invention]

[0011] This disclosure provides a power management system, power management device, power management method, and program that enable the creation of more accurate power plans through the coordination of two independent devices targeting different power markets. [Brief explanation of the drawing]

[0012] [Figure 1] This figure shows an example of the overall configuration including the power management system according to the embodiment. [Figure 2] This figure shows an example configuration of a supply and demand management device according to an embodiment. [Figure 3] This figure shows an example of the configuration of a supply and demand adjustment device according to the embodiment. [Figure 4] This figure shows an example of the linked data generated by the power management system according to the embodiment. [Figure 5] This figure shows a portion of the linked data generated by the power management system according to the embodiment. [Figure 6] This figure shows an example of the operation of a power management system according to the present invention. [Figure 7] This figure shows an example of the operation of a power management system according to a modified embodiment. [Modes for carrying out the invention]

[0013] The embodiments will be described below with reference to the drawings. In the following drawings, identical or similar parts are denoted by the same or similar reference numerals.

[0014] (1) Overall structure Figure 1 shows an example of the overall system configuration including the power management system 30. In Figure 1, communication lines are shown as dotted lines between blocks, and power lines are shown as solid lines between blocks. The system shown in Figure 1 comprises multiple facilities 10 and a power management system 30.

[0015] Each facility 10 may be a residence, a store, an office, or the like. Each facility 10 may be an apartment complex including a plurality of residences, or may be a mixed-use facility including at least one of a residence, a store, and an office.

[0016] Each facility 10 is electrically connected to an electric power system 110a. Each facility 10 may be supplied with power from the electric power system 110a, and such power is also referred to as forward-flow power. Each facility 10 may supply power to the electric power system 110a, and such power is also referred to as reverse-flow power.

[0017] Each facility 10 includes a distributed power source 100, a load device 130, and an EMS (Energy Management System) 200. Each facility 10 may include a plurality of distributed power sources 100. The distributed power source 100 is electrically connected to the load device 130 via a power line 101a in the facility 10. The distributed power source 100 is communicatively connected to the EMS 200 via a communication line 201a.

[0018] The distributed power source 100 is electrically connected to the load device 130 and the electric power system 110a via the power line 101a in the facility 10. The distributed power source 100 includes power generation equipment and / or power storage equipment. Specifically, the distributed power source 100 may include only power generation equipment, only power storage equipment, or both power generation equipment and power storage equipment. Note that the amount of power related to the distributed power source 100 includes the power generation amount of the power generation equipment and / or the discharge amount of the power storage equipment.

[0019] The power generation equipment may be, for example, a solar cell facility. The solar cell facility is a distributed power source that generates power in response to light such as sunlight. For example, the solar cell facility is constituted by a PCS (Power Conditioning System) and a solar panel. The PCS converts DC power from the solar panel into AC power, and supplies the AC power via the power line 101a. The PCS also includes a power meter (not shown) that measures the amount of power generated by the solar panel.

[0020] The power generation equipment may be a fuel cell facility. A fuel cell facility is a distributed power source that generates power using fuel. For example, the fuel cell facility is constituted by a PCS and a fuel cell. The PCS includes a power meter (not shown in the drawings) that measures the power generation amount of the fuel cell. The fuel cell facility may be a solid oxide fuel cell (SOFC; Solid Oxide Fuel Cell), may be a polymer electrolyte fuel cell (PEFC; Polymer Electrolyte Fuel Cell), may be a phosphoric acid fuel cell (PAFC; Phosphoric Acid Fuel Cell), or may be a molten carbonate fuel cell (MCFC; Molten Carbonate Fuel Cell). The power generation equipment may be wind power generation equipment, geothermal power generation equipment, fuel cell and / or biomass power generation equipment, or the like. The power generation equipment 110 may also include a diesel generator.

[0021] The power storage equipment is a distributed power source that charges and discharges power from the power generation equipment and / or the power system 110a. The power storage equipment may include one storage battery, or may include a plurality of storage batteries. The power storage equipment includes a PCS. The PCS converts direct-current power into alternating-current power, and supplies the alternating-current power via the power line 101a. The PCS also converts alternating-current power into direct-current power and outputs the direct-current power to the storage battery when charging the power storage equipment. The PCS includes a power meter that respectively measures the discharge amount of the power storage equipment.

[0022] The load device 130 is a device that consumes power. For example, the load device 130 may include an air conditioner, a heat pump water heater, a lighting device, or the like.

[0023] The EMS200 manages the power supply for facility 10. The EMS200 may also control the distributed power supplies 100 and load equipment 130. The EMS200 is communicatively connected to the power management system 30 via a communication network 20, and receives control commands from the power management system 30 and transmits power consumption data (described later) to the power management system 30. The control commands may be instructions or commands to control the distributed power supplies 100. The communication network 20 includes at least one of a LAN (Local Area Network), a WAN (Wide Area Network), and the Internet.

[0024] (2) Configuration of the power management system As shown in Figure 1, the power management system 30 includes a supply and demand management device 310 (an example of a first power management device) and a supply and demand adjustment device 320 (an example of a second power management device). The supply and demand management device 310 and the supply and demand adjustment device 320 of the power management system 30 are each connected to the facility 10 via a communication network 20 so as to be able to communicate with it. In addition, the supply and demand management device 310 and the supply and demand adjustment device 320 are connected to each other via the communication network 20 so as to be able to communicate with each other.

[0025] The supply and demand management device 310 consists of one or more computers. The supply and demand management device 310 is communicatively connected to the wholesale electricity market 400 system (not shown) via a communication network 20. For trading in the wholesale electricity market 400, the supply and demand management device 310 forecasts the demand and supply of electricity, as well as the amount of electricity generated by power generation facilities, and creates a power generation sales plan and / or demand procurement plan as described later. The supply and demand management device 310 transmits the created power generation sales plan and / or demand procurement plan to a designated organization (for example, the Organization for Cross-regional Coordination of Transmission Operators (OCCTO)). The business operator (power generation business operator) to which the supply and demand management device 310 belongs sells electricity in the wholesale electricity market 400 based on the power generation sales plan.

[0026] The wholesale electricity market 400 is a market where electricity that has actually been generated is traded. The wholesale electricity market 400 may be a market where electricity is traded for a predetermined period (for example, one day from 0:00 to 24:00 the following day). The wholesale electricity market 400 may be a market where electricity rates are set for each unit period (for example, 30 minutes) that makes up the predetermined period. The wholesale electricity market 400 may include a spot market where trading closes the day before the predetermined period. The wholesale electricity market 400 may include an early market where trading closes immediately before (for example, one hour before) a unit period that makes up the predetermined period.

[0027] The supply and demand adjustment device 320 consists of one or more computers. The supply and demand management device 310 is communicatively connected to the supply and demand adjustment market 500 system (not shown) via the communication network 20. The supply and demand adjustment device 320 forecasts the demand and supply of electricity for transactions in the supply and demand adjustment market 500, as well as the amount of electricity generated by the power generation facilities contracted by the adjustment operator, and creates a power adjustment plan. The supply and demand adjustment device 320 transmits the created power adjustment plan to a designated organization (e.g., the AC system).

[0028] The supply and demand adjustment device 320 is used, for example, by AC (Aggregation Coordinator) or RA (Resource Aggregator) operators to trade adjustment power in the supply and demand adjustment market 500. Adjustment power refers to the function of controlling the increase or decrease of the amount of electricity from distributed power sources 100 in order to maintain the balance of electricity supply and demand. Adjustment power adjusts the amount of electricity by adjusting the output of power generation equipment, adjusting the charging and discharging of energy storage equipment, or suppressing the amount of electricity consumed by facilities 10. The operator to which the supply and demand adjustment device 320 belongs (adjustment operator) sells adjustment power based on the power adjustment plan to transmission and distribution operators that require adjustment power in the supply and demand adjustment market 500.

[0029] The Supply and Demand Adjustment Market 500 is an electricity market where ACs (electricity exchange operators) and power generators (electricity generators) bid on the necessary adjustment capacity offered by transmission and distribution companies (buyers), and trading of adjustment capacity takes place.

[0030] In the power management system 30 configured as described above, the supply and demand management device 310 and the supply and demand adjustment device 320 are operated as independent devices because they target different electricity markets. On the other hand, the supply and demand management device 310 and the supply and demand adjustment device 320 have common functions such as collecting power data and forecasting power for each facility 10.

[0031] The supply and demand management device 310 creates a power generation and sales plan (an example of a first power plan) for the wholesale power market 400 (an example of a first power market), which is a plan for the amount of electricity for one or more distributed power sources 100. The supply and demand adjustment device 320 creates a power adjustment plan (an example of a second power plan) for the supply and demand adjustment market 500 (an example of a second power market), which is a plan for the amount of electricity for the distributed power sources 100.

[0032] For example, the supply and demand management device 310 creates a power generation sales plan in order to trade the electricity of the distributed power sources 100 for the next day in the wholesale electricity market 400 (spot market). On the other hand, in the supply and demand adjustment market 500, which is targeted by the supply and demand adjustment device 320, bidding for the adjustment capacity (tertiary adjustment capacity) of the distributed power sources 100 begins after the trading in the spot market has been decided. Therefore, it is desirable for the supply and demand adjustment device 320 to create a power adjustment plan using the data from the power generation sales plan created by the supply and demand management device 310.

[0033] In this embodiment, the supply and demand management device 310 performs a power forecast that predicts the amount of electricity related to the distributed power source 100 over a predetermined period in the future, and transmits linked data based on the power forecast to the supply and demand adjustment device 320. Here, the predetermined period in the future is the period during which the amount of electricity related to the distributed power source 100 is traded, for example, from 0:00 to 24:00 the following day. The supply and demand adjustment device 320 receives the linked data from the supply and demand management device 310 and creates a power adjustment plan based on the linked data. As a result, the supply and demand adjustment device 320 can use the power generation and sales plan data (linked data) from the supply and demand management device 310, and can create a more accurate power adjustment plan using the linked data.

[0034] The linked data is data generated based on the power forecast of the supply and demand management device 310, and is used by the supply and demand adjustment device 320 to create a power adjustment plan. The linked data includes, for example, the amount of power generated by the distributed power source 100 as a target for a predetermined period, data indicating the predicted amount of power for the distributed power source 100, or a numerical value calculated based on the predicted amount of power.

[0035] The linked data may include power generation plan values. Power generation plan values ​​indicate the amount of power that the distributed power source 100 aims to generate during the predetermined period. As a result, the supply and demand adjustment device 320 can use the power generation plan values, which are the result of the power forecast by the supply and demand management device 310, and thus create a more accurate power adjustment plan.

[0036] The linked data may include power generation forecast values. The power generation forecast values ​​indicate the predicted power generation amount of the distributed power source 100 during the predetermined period. As a result, the supply and demand adjustment device 320 can use the power generation forecast values, which are the result of the power forecast by the supply and demand management device 310, and thus can create a more accurate power adjustment plan.

[0037] The linked data includes power generation plan values ​​and power generation forecast values. The supply and demand management device 310 may calculate the power generation plan values ​​based on a first unit and the power generation forecast values ​​based on a second unit smaller than the first unit. In this case, the first unit is first cumulative energy (kWh) / unit time (h), and the second unit is second cumulative energy (kWh) / the aforementioned unit time (h). This allows the supply and demand adjustment device 320 to take into account the error between the power generation plan values ​​and power generation forecast values, which are the result of the power forecast by the supply and demand management device 310, and thus create a more accurate power adjustment plan.

[0038] The linked data may include the predicted power generation value and the error range of that predicted power generation value. This allows the supply and demand adjustment device 320 to take into account the error range of the predicted power generation value, thereby enabling it to create a more accurate power adjustment plan.

[0039] The distributed power source 100 includes energy storage equipment, and the linked data may include control plan values ​​for controlling the charging and discharging of the energy storage equipment during the predetermined period. This makes it easier for the supply and demand adjustment device 320 to understand the amount of energy storage equipment it can control, and thus enable it to create an accurate power adjustment plan.

[0040] The linked data includes a predicted remaining energy value for the energy storage equipment, which indicates the predicted amount of energy remaining after the charging and discharging of the energy storage equipment has been controlled based on the control plan values ​​described above. This makes it easier for the supply and demand adjustment device 320 to understand the amount of energy storage equipment it can control, and thus enables it to create an accurate power adjustment plan.

[0041] The linked data includes the predicted price of electricity for the distributed power source 100 during the predetermined period described above. This allows the supply and demand adjustment device 320 to control the amount of electricity from the distributed power source 100, such as increasing the amount of electricity during periods of high prices, thereby improving cost-effectiveness.

[0042] (2.1) Configuration of supply and demand management device Figure 2 shows an example configuration of the supply and demand management device 310. Figure 2(a) shows an example hardware configuration of the supply and demand management device 310, and Figure 2(b) shows an example functional block configuration of the supply and demand management device 310.

[0043] As shown in Figure 2(a), the supply and demand management device 310 includes a first control unit 311, a first storage unit 312, and a first communication unit 313. The first control unit 311, the first storage unit 312, and the first communication unit 313 are connected by a bus 314.

[0044] The first control unit 311 includes at least one processor and controls the first storage unit 312 and the first communication unit 313 by executing a program stored in the first storage unit 312. The at least one processor may consist of a single integrated circuit (IC) or a plurality of communicatively connected circuits (integrated circuits and / or discrete circuits, etc.). The first control unit 311 performs the functions described later by executing the program stored in the first storage unit 312.

[0045] The first storage unit 312 may be composed of various types of memory, such as ROM (Read Only Memory), RAM (Random Access Memory), and auxiliary storage devices. The first storage unit 312 may be a storage device such as an HDD (Hard Disk Drive) or SSD (Solid-State Drive), or it may be implemented by cloud storage. The first storage unit 312 may have a database for managing various types of data. The first storage unit 312 may store programs executed by the first control unit 311. The first storage unit 312 stores and accumulates power consumption data received by the first communication unit 313.

[0046] The first communication unit 313 includes a transceiver and is connected to the communication network 20. The first communication unit 313 communicates with the EMS 200 of the facility 10 and the second communication unit 323 of the supply and demand adjustment device 320 via the communication network 20. The first communication unit 313 periodically receives power consumption data from the distributed power sources 100 (for example, every 30 minutes).

[0047] The supply and demand management device 310 (an example of a power management device) configured as described above creates a power generation and sales plan (an example of a first power plan) for the wholesale power market 400 (an example of a first power market) that plans the amount of electricity for one or more distributed power sources 100. The supply and demand management device 310 includes a first control unit 311 (an example of a control unit) and a first communication unit 313 (an example of a communication unit). The first control unit 311 performs a power forecast to predict the amount of electricity for the distributed power sources 100 and creates linked data based on the power forecast. The first communication unit 313 transmits the linked data to the supply and demand adjustment device 320, which creates a power adjustment plan (an example of a second power plan) for the supply and demand adjustment market 500 (an example of a second power market) that plans the amount of electricity for the distributed power sources 100.

[0048] As shown in Figure 2(b), the first control unit 311 of the supply and demand management device 310 realizes each function of the power supply and demand management function unit 310a by executing a predetermined program. The power supply and demand management function unit 310a includes a first energy data collection unit 331, a first power forecasting unit 332, a first power procurement unit 333, a plan creation unit 334, and a power supply and demand monitoring and adjustment unit 335.

[0049] The first power data collection unit 331 collects power data from the distributed power sources 100, such as the amount of power generated by the power generation equipment, the amount of charge and discharge of the energy storage equipment, and / or the amount of power consumed by each facility 10. The "power" in the power data refers to, for example, the measured value of the cumulative power (kWh) over a predetermined period (for example, 30 minutes).

[0050] The first power forecasting unit 332 analyzes past power consumption data, weather data, and event information, etc., and performs a power forecast for the predetermined period based on future power demand and the predicted power generation amount of power generation facilities. The first power forecasting unit 332 may also calculate, for example, the predicted power generation value, the error range, and the predicted price from the linked data.

[0051] Based on the above power forecast, the first power procurement unit 333 creates a control plan for controlling the charging and discharging of the energy storage equipment, a power procurement plan via the external power grid 10, and / or a sales plan, taking into account the surplus power of the distributed power sources 100. The control plan includes whether or not to control the charging and discharging of the energy storage equipment and the control plan values. The first power procurement unit 333 may also calculate, for example, the control plan values ​​and the predicted remaining capacity values ​​from the linked data.

[0052] The planning unit 334 creates a power generation and sales plan based on power forecasts and control plans. The power generation and sales plan includes power generation plan values ​​for the predetermined period. The planning unit 334 calculates, for example, power generation plan values ​​from the linked data. The planning unit 334 transmits the power generation and sales plan to a predetermined organization (for example, the Organization for Cross-regional Coordination of Transmission Operators (OCCTO)). The planning unit 334 may also generate linked data.

[0053] The planning unit 334 may also create a demand procurement plan based on the power forecast and control plan. The demand procurement plan includes forecasting the amount of electricity to be procured (purchased) from the external power grid 110a and charged to the energy storage equipment during the predetermined period (hereinafter referred to as "external charging electricity"). The demand procurement plan includes data indicating the forecasted external charging electricity. The planning unit 334 may generate this data as linked data.

[0054] The power supply and demand monitoring and adjustment unit 335 monitors the power supply and demand situation in real time and controls the charging and discharging of the energy storage equipment in accordance with the power generation and sales plan.

[0055] (2.2) Configuration of supply and demand adjustment device Figure 3 shows an example configuration of the supply and demand adjustment device 320. Figure 3(a) shows an example hardware configuration of the supply and demand adjustment device 320, and Figure 3(b) shows an example functional block configuration of the supply and demand adjustment device 320.

[0056] As shown in Figure 3(a), the supply and demand adjustment device 320 includes a second control unit 321, a second storage unit 322, and a second communication unit 323. The second control unit 321, the second storage unit 322, and the second communication unit 323 are connected by a bus 324.

[0057] The configuration of the second control unit 321, the second storage unit 322, and the second communication unit 323 is the same as the configuration of the first control unit 311, the first storage unit 312, and the first communication unit 313 of the supply and demand management device 310, so a description will be omitted.

[0058] The second communication unit 323 communicates with the EMS 200 of the facility 10 and the first communication unit 313 of the supply and demand management device 310 via the communication network 20. The second communication unit 323, like the first communication unit 313 of the supply and demand management device 310, periodically (for example, every 30 minutes) receives power consumption data from the distributed power sources 100.

[0059] In the supply and demand adjustment device 320 configured as described above, the second communication unit 323 receives coordinated data from the supply and demand management device 310. The second control unit 321 creates a power adjustment plan based on the received coordinated data.

[0060] As shown in Figure 3(b), the supply and demand adjustment device 320 realizes each function of the supply and demand adjustment function unit 320a by executing a predetermined program. The supply and demand adjustment function unit 320a includes a second energy data collection unit 351, a second power forecasting unit 352, an adjustment capacity calculation unit 353, a power adjustment plan creation unit 354, and a power control unit 355.

[0061] The second power consumption data collection unit 351, like the first power consumption data collection unit 331, collects power consumption data from the distributed power sources 100, such as the amount of power generated by the power generation equipment, the amount of charge and discharge of the energy storage equipment, and / or the amount of power consumed by each facility 10.

[0062] The second power forecasting unit 352, similar to the first power forecasting unit 332, analyzes past power consumption data, weather data, and event information, and performs a power forecast for the predetermined period based on future power demand and the projected power generation amount of power generation facilities.

[0063] The adjustment capacity calculation unit 353 calculates the adjustment capacity of the distributed power source 100. The adjustment capacity calculation unit 353 may also calculate the adjustment capacity based on the received interoperation data.

[0064] The adjustment capacity calculation unit 353 calculates, for example, the surplus adjustment capacity when the power generation equipment is controlled based on the power generation plan value. The adjustment capacity calculation unit 353 may, for example, correct the error between the power generation plan value and the power generation forecast value and calculate the surplus adjustment capacity when the power generation equipment is controlled based on the corrected value. The adjustment capacity calculation unit 353 may calculate the surplus adjustment capacity when the power generation equipment is controlled based on the power generation forecast value. The adjustment capacity calculation unit 353 may calculate the surplus adjustment capacity when the charging and discharging of the energy storage equipment is controlled based on the control plan value. The adjustment capacity calculation unit 353 may calculate the adjustment capacity of the energy storage equipment based on the forecast remaining capacity value. The adjustment capacity calculation unit 353 may calculate the adjustment capacity of the power generation equipment and energy storage equipment based on the forecast price. For example, the adjustment capacity calculation unit 353 may adjust the amount of electricity to increase the amount of electricity during times when the forecast price is high.

[0065] The power adjustment plan creation unit 354 creates a power adjustment plan based on the calculated adjustment capacity and transmits it to a designated organization (for example, the AC system). The power control unit 355 controls the charging and discharging of the energy storage equipment so that the power adjustment capacity is realized according to the power adjustment plan.

[0066] (3) Linked data Figure 4 shows an example of linked data transmitted from the supply and demand management device 310 to the supply and demand adjustment device 320. The linked data may be associated with period information that specifies a predetermined period during which electricity trading takes place (for example, from 0:00 to 24:00 the following day). The linked data includes at least one of the following: planned generation value, predicted generation value, error range, planned control value, predicted remaining amount value, and predicted price.

[0067] The planned power generation value indicates the target amount of power generated by the power generation facility during the specified period. The predicted power generation value indicates the predicted amount of power generated by the power generation facility during the specified period. The planned power generation value and the predicted power generation value are similar in that they are the amount of electricity predicted by the supply and demand management device 310, but they differ in the following respects.

[0068] Figure 5 shows an example of planned and predicted power generation values ​​for a power generation facility. In Figure 5, planned power generation values ​​are shown by solid lines, and predicted power generation values ​​are shown by dotted lines. Planned power generation values ​​represent the amount of electricity traded in a predetermined unit in the wholesale electricity market 400 (spot market), for example, the amount of electricity traded in units of 50 kWh / 30 minutes. On the other hand, predicted power generation values ​​are calculated in smaller units than planned power generation values ​​(for example, an integrated amount of electricity less than 50 kWh per 30 minutes). Therefore, as shown in Figure 5, predicted power generation values ​​show a smoother change compared to planned power generation values. Consequently, errors may occur between planned and predicted power generation values. In such cases, the supply and demand adjustment device 320 can create a more accurate power adjustment plan by grasping the error between planned and predicted power generation values ​​as linked data.

[0069] The error range indicates the range of error that could cause the predicted power generation value to deviate, and is shown as an upper and / or lower limit relative to the predicted power generation value. The error may also be expressed as a percentage (%). For example, the error may be expressed as the rate of increase in the predicted power generation value due to the error, and / or the rate of decrease in the predicted power generation value due to the error. The control plan value is a planned value for controlling the charging and discharging of the energy storage equipment during the predetermined period. The predicted remaining amount value indicates the predicted amount of remaining power after the supply and demand management device 310 controls the charging and discharging of the energy storage equipment based on the control plan value.

[0070] The predicted price is the estimated market price for the amount of electricity generated and stored in the power generation and storage facilities during the specified period mentioned above.

[0071] The linked data is not limited to including all of the data shown in Figure 4. The linked data may include one or more of the data shown in Figure 4. For example, the linked data may include only the power generation plan value, or only the power generation forecast value. The linked data may include only the power generation forecast value and the error range. The linked data may include only the control plan value, or only the control plan value and / or the forecast remaining amount value.

[0072] (4) Operation of the power management system Figure 6 shows an example of the operation of the power management system 30 according to the embodiment. The supply and demand management device 310 and the supply and demand adjustment device 320 of the power management system 30 execute a predetermined program and perform the following processes.

[0073] In step S11, the first control unit 311 of the supply and demand management device 310 collects energy data from the distributed power sources 100, such as the amount of power generated by the power generation equipment, the amount of charge and discharge of the energy storage equipment, and / or the amount of power consumed by each facility 10. The "energy" in the energy data refers to, for example, the measured value of the cumulative energy (kWh) over a predetermined period (for example, 30 minutes).

[0074] In step S12, the first control unit 311 analyzes past electricity consumption data, weather data, and event information, etc., and performs electricity forecasting based on the electricity demand and predicted power generation amount of the power generation equipment for a predetermined period in the future (for example, from 0:00 to 24:00 the next day). The first control unit 311 also analyzes past electricity price data, weather data, and event information, etc., and predicts the price of the predicted amount of electricity for the same predetermined period.

[0075] In step S13, the first control unit 311 creates a control plan based on the power forecast. The control plan is a plan for controlling the charging and discharging of the energy storage equipment, created taking into account the surplus power of the distributed power source 100. The control plan includes whether or not to control the charging and discharging of the energy storage equipment and the control plan values.

[0076] In step S14, the first control unit 311 creates a power generation and sales plan based on the power forecast and control plan. The power generation and sales plan includes the power generation plan values ​​described above. In the wholesale electricity market 400, the amount and price of electricity based on the power generation and sales plan created in step S14 are determined by bidding. Bidding may take place at multiple time intervals (e.g., every 30 minutes).

[0077] In step S15, the first control unit 311 transmits the determined power generation and sales plan to a predetermined organization (for example, the Organization for Cross-regional Coordination of Transmission Operators (OCCTO)). The first control unit 311 controls the amount of electricity from the distributed power sources 100 in accordance with the power generation and sales plan during the predetermined period.

[0078] In step S16, the first control unit 311 generates the above-mentioned linked data based on the determined power generation and sales plan. The first control unit 311 transmits the coordination data to the supply and demand adjustment device 320 via the first communication unit 313. The coordination data transmitted may be one, multiple, or all of the data shown in Figure 4.

[0079] In step S17, the second control unit 321 of the supply and demand adjustment device 320 receives the linked data via the second communication unit 323.

[0080] In step S18, the second control unit 321 calculates the adjustment force based on the received coordination data. If the coordination data includes multiple or all of the data shown in Figure 4, the second control unit 321 may select one of the data.

[0081] For example, the second control unit 321 calculates the surplus adjustment capacity when the power generation equipment is controlled based on the power generation plan value. The second control unit 321 may also correct the error between the power generation plan value and the power generation forecast value and calculate the surplus adjustment capacity when the power generation equipment is controlled based on the corrected value. The second control unit 321 may also calculate the surplus adjustment capacity when the power generation equipment is controlled based on the power generation forecast value. The second control unit 321 may also calculate the surplus adjustment capacity when the charging and discharging of the energy storage equipment is controlled based on the control plan value. The second control unit 321 may also calculate the adjustment capacity of the energy storage equipment based on the forecast remaining capacity value. The second control unit 321 may also calculate the adjustment capacity of the power generation equipment and energy storage equipment based on the forecast price. For example, the second control unit 321 may adjust the amount of electricity to increase the amount of electricity during times when the forecast price is high.

[0082] In step S19, the second control unit 321 creates a power adjustment plan based on the calculated adjustment force and transmits it to a predetermined organization (e.g., the AC system). The second control unit 321 controls the charging and discharging of the energy storage equipment in accordance with the power adjustment plan during the predetermined period.

[0083] In this example, the process of generating linked data (step S16) may be performed after the creation of the control plan (step S13). Alternatively, the process of generating linked data may be performed after the power forecasting and price forecasting processes (step S12).

[0084] (5) Example of change In the above embodiment, the operation of transmitting linked data from the supply and demand management device 310 to the supply and demand adjustment device 320 was described. In contrast, this modified example will describe the operation of transmitting linked data from the supply and demand adjustment device 320 to the supply and demand management device 310.

[0085] In the power management system 30 related to this modification example, the supply and demand adjustment device 320 (first power management device) creates a power adjustment plan (an example of a first power plan) targeting the supply and demand adjustment market 500 (an example of a first power market), and the supply and demand management device 310 creates a power generation and sales plan (an example of a second power plan) targeting the wholesale power market 400 (an example of a second power market). The supply and demand adjustment device 320 performs a power forecast to predict the amount of electricity related to the distributed power sources 100 during the predetermined period, and transmits linked data based on the power forecast to the supply and demand management device 310. The supply and demand management device 310 receives the linked data and creates a power generation and sales plan based on the linked data.

[0086] The linked data is data generated based on the power forecast of the supply and demand adjustment device 320, and may be data used by the supply and demand management device 310 to create a power generation and sales plan. Such linked data includes, for example, the control plan values ​​and / or predicted remaining values ​​described above. The first control unit 311 (plan creation unit 334) of the supply and demand management device 310, upon receiving the linked data, creates a power generation and sales plan based on the linked data.

[0087] Figure 7 shows an example of the operation of the power management system 30 in this modified example. This modified example differs from the operation example in Figure 6 in that the supply and demand adjustment device 320 transmits the linked data it generates to the supply and demand management device 310.

[0088] In step S31, the second control unit 321 of the supply and demand adjustment device 320 collects power data from the distributed power sources 100, such as the amount of power generated by the power generation equipment, the amount of charge and discharge of the energy storage equipment, and / or the amount of power consumed by each facility 10, similar to step S11 in the operation example in Figure 6.

[0089] In step S32, the second control unit 321 analyzes past power consumption data, weather data, and event information, and performs a power forecast based on the power demand for a predetermined period in the future and the predicted power generation amount of the power generation equipment.

[0090] In step S33, the second control unit 321 calculates the extent to which it will control the increase or decrease in the amount of power of the distributed power source 100 (regulating power) based on the power forecast. The regulating power includes control plan values ​​for controlling the charging and discharging of the energy storage equipment during the predetermined period.

[0091] In step S34, the second control unit 321 generates coordination data based on the calculated adjustment force. The second control unit 321 includes, for example, the control plan value among the data shown in Figure 4. The second control unit 321 transmits the coordination data to the supply and demand management device 310 via the second communication unit 323.

[0092] In step S35, the second control unit 321 creates a power adjustment plan based on the adjustment power calculated in step S34 and transmits it to a predetermined organization (e.g., AC system). This adjustment power is, for example, the adjustment power (e.g., primary adjustment power and secondary adjustment power) that is bid on in the supply and demand adjustment market 500 before the bids for power from the distributed power source 100 in the wholesale power market 400. During the predetermined period, the second control unit 321 controls the charging and discharging of the energy storage equipment in accordance with the power adjustment plan.

[0093] Meanwhile, in step S36, the first control unit 311 of the supply and demand management device 310 receives the linked data via the first communication unit 313.

[0094] In step S37, the first control unit 311 creates a power generation and sales plan based on the received coordinated data. For example, the first control unit 311 creates a power generation and sales plan based on the control plan values ​​among the received coordinated data.

[0095] In the wholesale electricity market 400, the amount and price of electricity based on the power generation and sales plan created in step S36 are determined by bidding. Bidding may take place at multiple time intervals (for example, every 30 minutes).

[0096] In step S38, the first control unit 311 transmits the power generation and sales plan to a predetermined organization (for example, the Organization for Cross-regional Coordination of Transmission Operators (OCCTO)). The first control unit 311 controls the amount of electricity from the distributed power sources 100 in accordance with the power generation and sales plan during the predetermined period.

[0097] In the above example of modification, the linked data may include the predicted remaining amount, and the second control unit 321 may create a power generation sales plan based on the predicted remaining amount.

[0098] According to the above example of modification, before bidding on the amount of electricity from distributed power sources 100 in the wholesale electricity market 400, the adjustment capacity of distributed power sources 100 in the supply and demand adjustment market 500 (e.g., primary adjustment capacity and secondary adjustment capacity) is calculated, and the calculated adjustment capacity can be used to create the power generation and sales plan for the wholesale electricity market 400.

[0099] As described above, the supply and demand adjustment device 320 may perform a power forecast that predicts the amount of electricity related to the distributed power sources 100 over a predetermined period in the future, and transmit linked data based on the power forecast to the supply and demand management device 310. In this case, the supply and demand management device 310 receives the linked data and creates a power generation and sales plan based on the linked data. This allows the supply and demand management device 310 to take into account the power plan data generated by the supply and demand adjustment device 320, thereby enabling it to create a more accurate power generation and sales plan.

[0100] (6) Other embodiments Although this disclosure has been described by the embodiments described above, the descriptions and drawings that constitute part of this disclosure should not be understood as limiting the invention. Various alternative embodiments, examples, and operational techniques will become apparent to those skilled in the art from this disclosure.

[0101] In the example operation shown in Figure 6, the supply and demand management device 310 creates a power generation and sales plan based on the power forecast and control plan and transmits it to the Organization for Cross-regional Coordination of Transmission Operators (OCCTO) (steps S14-S15), but the disclosure is not limited thereto. The supply and demand management device 310 may also create a demand procurement plan in place of, or in addition to, the power generation and sales plan and transmit it to the Organization for Cross-regional Coordination of Transmission Operators (OCCTO). The supply and demand management device 310 controls the charging of the energy storage facility from the external power grid 110a according to the demand procurement plan. In this case, the linkage data generated in step S16 includes data indicating the amount of external charging power, which is the amount of electricity charged to the energy storage facility from the external power grid 110a during the predetermined period. The supply and demand adjustment device 320 may calculate the adjustment capacity based on the amount of external charging power received as linkage data in step S18.

[0102] In the example operation shown in Figure 7, the supply and demand management device 310 creates a power generation and sales plan based on the linked data received from the supply and demand adjustment device 320 and transmits it to the Organization for Cross-regional Coordination of Transmission Operators (OCCTO) (steps S14-S15), but the disclosure is not limited thereto. The supply and demand management device 310 may also create a demand procurement plan based on the linked data and transmit it to the Organization for Cross-regional Coordination of Transmission Operators (OCCTO). The supply and demand management device 310 controls charging of the energy storage equipment from the external power grid 110a according to the created demand procurement plan.

[0103] The supply and demand adjustment device 320 may consist of multiple devices. For example, the supply and demand adjustment device 320 may include two independent devices, such as a device for RA and a device for AC. For example, the device for RA provides a function to calculate the adjustment capacity of the energy storage equipment, and the device for AC provides a function to create a control plan based on the adjustment capacity output by the device for RA and to support trading in the supply and demand adjustment market 500. In this case, the device for RA and the device for AC may exchange data with each other.

[0104] The operation flows and operation examples in the embodiments described above do not necessarily have to be executed chronologically in the order shown in the flow diagram or sequence diagram. For example, the steps in the operation may be executed in a different order than that shown in the flow diagram or sequence diagram, or they may be executed in parallel. Also, some steps in the operation may be deleted, or further steps may be added to the process. Furthermore, the operation flows and operation examples in the embodiments described above may be implemented separately and independently, or two or more operation flows and operation examples may be combined and implemented. For example, some steps of one operation flow may be added to another operation flow, or some steps of one operation flow may be replaced with some steps of another operation flow.

[0105] A program may be provided that causes a computer to perform the operations according to the above embodiment. The program may be recorded on a computer-readable medium. Using a computer-readable medium, it is possible to install the program on a computer. Here, the computer-readable medium on which the program is recorded may be a non-transient recording medium. The non-transient recording medium is not particularly limited, but may be a recording medium such as a CD-ROM or DVD-ROM. Furthermore, the circuits that perform the operations performed in the above embodiment may be integrated to form a semiconductor integrated circuit (chipset, SoC).

[0106] The terms “include,” “comprise,” and their variations as used in this disclosure do not mean that only the listed items are included, but that the listed items may be included, or that additional items may be included in addition to the listed items. Furthermore, the term “or” as used in this disclosure is not intended to mean exclusive OR. The terms “based on” and “according to” as used in this disclosure do not mean “based only on” or “according only to” unless otherwise specified. “Based on” means both “based only on” and “based at least partially on.” Similarly, “according to” means both “based only on” and “according at least partially to.” Moreover, any reference to elements using designations such as “first,” “second,” etc., as used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used herein as a convenient way to distinguish between two or more elements. Therefore, references to first and second elements do not mean that only two elements may be employed therein, or that the first element must precede the second element in any way. In this disclosure, if articles are added by translation, such as a, an, and the in English, these articles shall be plural unless it is clearly indicated otherwise from the context.

[0107] Although the embodiments have been described in detail above with reference to the drawings, the specific configuration is not limited to those described above, and various design changes can be made without departing from the gist of the invention.

[0108] (7) Note The features of the above-described embodiment are noted below.

[0109] (Note 1) A first power management device that creates a first power plan for the first electricity market, which is a plan for the amount of electricity related to one or more distributed power sources, A second power management device that creates a second power plan for the amount of electricity related to one or more distributed power sources, which is a second power plan that is different from the first power market, The first power management device performs a power forecast to predict the amount of electricity related to one or more distributed power sources over a predetermined period in the future, and transmits the linked data based on the power forecast to the second power management device. The second power management device is a power management system that receives the linked data and creates the second power plan based on the linked data.

[0110] (Note 2) The first power management device is a supply and demand management device that creates the first power plan targeting the wholesale power market as the first power market, The power management system described in Appendix 1, wherein the second power management device is a supply and demand adjustment device that creates the second power plan targeting the supply and demand adjustment market as the second power market.

[0111] (Note 3) The first power management device is a supply and demand adjustment device that creates the first power plan targeting the supply and demand adjustment market as the first power market, The power management system described in Appendix 1, wherein the second power management device is a supply and demand management device that creates the second power plan targeting the wholesale power market as the second power market.

[0112] (Note 4) The aforementioned linked data includes planned power generation values ​​or predicted power generation values. The aforementioned power generation plan value indicates the amount of power generation targeted by one or more distributed power sources during the predetermined period. The aforementioned power generation forecast value indicates the predicted power generation amount of one or more distributed power sources during the predetermined period. The power management system described in Appendix 1.

[0113] (Note 5) The linked data includes the planned power generation value and the predicted power generation value, The first power management device calculates the planned power generation value based on the first unit, and calculates the predicted power generation value based on the second unit. The power management system described in Appendix 4, wherein the first unit is first integrated energy (kWh) / unit time (h), the second unit is second integrated energy (kWh) / unit time (h), and the second unit is smaller than the first unit.

[0114] (Note 6) The linked data includes the planned power generation value and the error range of the predicted power generation value. The power management system described in Appendix 4.

[0115] (Note 7) The aforementioned one or more distributed power sources include energy storage equipment, The linked data includes control plan values ​​for the first power management device to control the charging and discharging of the energy storage equipment during the predetermined period. The power management system described in Appendix 1.

[0116] (Note 8) The aforementioned linked data includes the predicted remaining amount of electricity in the energy storage facility. The power management system described in Appendix 7, wherein the predicted remaining amount indicates the amount of remaining power after the first power management device controls the charging and discharging of the energy storage equipment based on the control plan value.

[0117] (Note 9) The linked data includes the predicted price of electricity for the amount of electricity related to one or more distributed power sources during the predetermined period. The power management system described in Appendix 1.

[0118] (Note 10) A power management device that creates a first power plan for a first power market, which is a plan for the amount of electricity related to one or more distributed power sources, A control unit that performs a power forecast to predict the amount of electricity related to one or more distributed power sources and creates linked data based on the power forecast, A communication unit that transmits the aforementioned cooperation data to a second power management device which creates a second power plan for the amount of electricity related to one or more distributed power sources and which targets a second power market different from the first power market, and A power management device equipped with the following features.

[0119] (Note 11) A power management method performed by a first power management device that creates a first power plan for one or more distributed power sources, which is a plan for the amount of electricity for a first power market, and a second power management device that creates a second power plan for one or more distributed power sources, which is a plan for the amount of electricity for a second power market different from the first power market, The first power management device performs a power forecast to predict the amount of power related to one or more distributed power sources over a predetermined period in the future. The first power management device transmits the linked data based on the power forecast to the second power management device, The second power management device receives the linked data, The second power management device creates the second power plan based on the linked data. Power management methods including

[0120] (Note 12) A computer program executed by a first power management device that creates a first power plan for a first power market, which is a plan of electricity consumption for one or more distributed power sources, The steps include: performing a power forecast to predict the amount of electricity related to one or more distributed power sources; The steps include creating linked data based on the aforementioned power forecast, A program that causes a computer to perform the steps of transmitting the aforementioned cooperation data to a second power management device that creates a second power plan for the amount of electricity related to one or more distributed power sources, which is a second power plan targeting a second power market different from the first power market. [Explanation of Symbols]

[0121] 30: Power Management System 100: Distributed power supply 310: Supply and demand management device 311: First control unit 313: First Communications Department 320: Supply and demand adjustment device 321: Second Control Unit 323: Second Communications Department 400: Wholesale electricity market 500: Supply and Demand Adjustment Market

Claims

1. A first power management device that creates a first power plan for the first electricity market, which is a plan for the amount of electricity related to one or more distributed power sources, A second power management device that creates a second power plan for the amount of electricity related to one or more distributed power sources, which is a second power plan that is different from the first power market, The first power management device performs a power forecast to predict the amount of electricity related to one or more distributed power sources over a predetermined period in the future, and transmits the linked data based on the power forecast to the second power management device. The second power management device is a power management system that receives the linked data and creates the second power plan based on the linked data.

2. The first power management device is a supply and demand management device that creates the first power plan targeting the wholesale power market as the first power market, The power management system according to claim 1, wherein the second power management device is a supply and demand adjustment device that creates the second power plan targeting the supply and demand adjustment market as the second power market.

3. The first power management device is a supply and demand adjustment device that creates the first power plan targeting the supply and demand adjustment market as the first power market, The power management system according to claim 1, wherein the second power management device is a supply and demand management device that creates the second power plan targeting the wholesale power market as the second power market.

4. The aforementioned linked data includes planned power generation values ​​or predicted power generation values. The aforementioned power generation plan value indicates the amount of power generation that one or more distributed power sources aim to generate during the predetermined period. The aforementioned power generation forecast value indicates the predicted power generation amount of one or more distributed power sources during the predetermined period. The power management system according to claim 1.

5. The linked data includes the planned power generation value and the predicted power generation value, The first power management device calculates the planned power generation value based on the first unit, and calculates the predicted power generation value based on the second unit. The power management system according to claim 4, wherein the first unit is a first integrated energy amount (kWh) / unit time (h), and the second unit is a second integrated energy amount (kWh) / unit time (h), and the second unit is smaller than the first unit.

6. The linked data includes the predicted power generation value and the error range of the predicted power generation value. The power management system according to claim 4.

7. The aforementioned one or more distributed power sources include energy storage equipment, The linked data includes control plan values ​​for the first power management device to control the charging and discharging of the energy storage equipment during the predetermined period. The power management system according to claim 1.

8. The aforementioned linked data includes the predicted remaining amount of electricity in the energy storage facility. The power management system according to claim 7, wherein the predicted remaining amount indicates the predicted amount of remaining power after the first power management device controls the charging and discharging of the energy storage equipment based on the control plan value.

9. The linked data includes the predicted price of electricity for one or more distributed power sources during the predetermined period. The power management system according to claim 1.

10. A power management device that creates a first power plan for the first electricity market, which is a plan for the amount of electricity related to one or more distributed power sources, A control unit that performs a power forecast to predict the amount of electricity related to one or more distributed power sources and creates linked data based on the power forecast, A communication unit that transmits the aforementioned cooperation data to a second power management device which creates a second power plan for the amount of electricity related to one or more distributed power sources and which targets a second power market different from the first power market, and A power management device equipped with the following features.

11. A power management method performed by a first power management device that creates a first power plan for one or more distributed power sources, which is a plan for the amount of electricity for a first power market, and a second power management device that creates a second power plan for one or more distributed power sources, which is a plan for the amount of electricity for a second power market different from the first power market, The first power management device performs a power forecast to predict the amount of power related to one or more distributed power sources over a predetermined period in the future. The first power management device transmits the linked data based on the power forecast to the second power management device, The second power management device receives the linked data, The second power management device creates the second power plan based on the linked data. Power management methods including

12. A computer program executed by a first power management device that creates a first power plan for the first power market, which is a plan for the amount of electricity related to one or more distributed power sources, The steps include: performing a power forecast to predict the amount of electricity related to one or more of the aforementioned distributed power sources; The steps include creating linked data based on the aforementioned power forecast, A program that causes a computer to perform the steps of transmitting the aforementioned data to a second power management device which creates a second power plan for the amount of electricity related to one or more distributed power sources, and which is a second power plan for a second power market different from the first power market.

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