WO2020012835A1 - Système et procédé de commande - Google Patents
Système et procédé de commande Download PDFInfo
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- WO2020012835A1 WO2020012835A1 PCT/JP2019/022478 JP2019022478W WO2020012835A1 WO 2020012835 A1 WO2020012835 A1 WO 2020012835A1 JP 2019022478 W JP2019022478 W JP 2019022478W WO 2020012835 A1 WO2020012835 A1 WO 2020012835A1
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- Prior art keywords
- power
- unit
- customer
- capacity
- measurement result
- Prior art date
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/50—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads
- H02J2310/52—The controlling of the operation of the load not being the total disconnection of the load, i.e. entering a degraded mode or in current limitation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/50—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads
- H02J2310/56—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads characterised by the condition upon which the selective controlling is based
- H02J2310/62—The condition being non-electrical, e.g. temperature
- H02J2310/64—The condition being economic, e.g. tariff based load management
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S50/00—Market activities related to the operation of systems integrating technologies related to power network operation or related to communication or information technologies
- Y04S50/10—Energy trading, including energy flowing from end-user application to grid
Definitions
- the present disclosure relates to a control system and a control method for controlling power.
- the power generated by the power generation device is purchased by a power company.
- the power generated by the power generator fluctuates under the influence of the natural environment. Due to such fluctuations, it is difficult to appropriately charge the storage battery with the power generated by the power generation device. Therefore, for example, the power to be charged to the storage battery is determined based on the predicted generated power value of the power generation device and the allowable upper limit value of the generated power of the power generation device (for example, see Patent Document 1).
- the present disclosure has been made in view of such a situation, and an object of the present disclosure is to provide a technique for reducing power fluctuation.
- a control system has an input unit that receives a measurement result of power flowing forward from a power system to a customer, and forward power flowing from the power system to a customer.
- the measurement result received at the input unit exceeds a threshold value greater than zero, the load device installed at the customer is suppressed from consuming power, or the power storage device installed at the customer is stored.
- the control system includes an input unit for receiving a measurement result of the amount of power flowing forward from the power system to the customer, and (i) a measurement received at the input unit while power is flowing forward from the power system to the customer.
- the result can exceed a threshold value greater than zero, the load device installed in the customer suppresses power consumption, or the power storage system installed in the customer is discharged, and (ii) at the input unit,
- a control unit that increases the power consumption of the load equipment or charges the power storage system when the received measurement result can be lower than the threshold value, and obtains the power purchaseable capacity of the customer in a predetermined time zone.
- a determining unit that determines a threshold value used in the control unit based on the power purchaseable capacity acquired by the acquiring unit.
- Still another embodiment of the present disclosure is a control method.
- the method includes the steps of receiving a measurement result of power flowing forward from the power system to the customer, and (i) receiving the measurement result greater than zero while the power flow is flowing forward from the power system to the customer.
- the threshold value is exceeded, the load device installed in the customer is suppressed from consuming power, or the power storage system installed in the customer is discharged, and (ii) the received measurement result falls below the threshold value.
- increasing the power consumption of the load device or charging the power storage system obtaining the purchaseable capacity of the customer in a predetermined time zone, and based on the obtained purchaseable capacity , Determining a threshold value.
- Still another embodiment of the present disclosure is also a control method.
- the method includes the steps of: receiving a measurement result of the amount of power flowing forward from the power system to the customer; and (i) receiving the measurement result from zero while the power is flowing forward from the power system to the customer.
- the threshold value can be exceeded, the load device installed in the customer is suppressed from consuming power, or the power storage system installed in the customer is discharged, and (ii) the received measurement result is If it can be less than, increasing the power consumption of the load equipment, or charging the power storage system, obtaining the purchaseable capacity of the customer in a predetermined time zone, and the acquired purchaseable capacity Determining the threshold value.
- FIG. 1 is a diagram illustrating a configuration of a distributed power supply transaction market system according to a first embodiment. It is a flowchart which shows the transaction procedure by the distributed power supply transaction market system of FIG. It is a figure which shows the structure of the power generation house of FIG. It is a figure which shows the structure of the consumer of FIG.
- FIG. 2 is a sequence diagram showing a market participation processing procedure by the distributed power supply trading market system of FIG. 1.
- FIG. 4 is a diagram illustrating a data structure of a table stored in a storage unit in FIG. 3.
- FIG. 5 is a diagram illustrating a data structure of a table stored in a storage unit in FIG. 4.
- FIG. 2 is a sequence diagram showing a bidding process procedure by the distributed power supply trading market system of FIG. 1.
- FIG. 2 is a diagram illustrating a configuration of a server in FIG. 1.
- FIGS. 10A and 10B are diagrams showing a data structure of a database stored in the storage unit of FIG.
- FIG. 10 is a diagram illustrating an outline of processing in a processing unit in FIG.
- FIG. 2 is a sequence diagram illustrating a procedure of a successful bid process by the distributed power supply market system of FIG.
- FIG. 2 is a sequence diagram showing a power control / payment processing procedure by the distributed power supply market system of FIG.
- Example 1 relates to a distributed power trading market system including a power generator and a consumer.
- the power generator and the consumer include, for example, houses, offices, stores, factories, parks, and the like.
- a power generator is a facility that can sell electric power by flowing backward electric power generated by using renewable energy or a fuel cell into an electric power system.
- a description will be given using a solar cell as a representative of renewable energy or a fuel cell, but the present invention is not limited to a solar cell.
- a customer is a facility that can purchase power by flowing power from the power system in the forward direction.
- the power generated by the power generator fluctuates under the influence of fluctuations in the power generation by the solar cell, and the power consumed by the customer fluctuates under the influence of the operation status of the load devices in the customer.
- the fluctuation in the power system also increases, and the power system may become unstable.
- a power transmission and distribution company or a retail power company has a responsibility to adjust the fluctuations.
- the power generator utilizes the controllable load including the power storage system to stably output the power sold in slot units of, for example, 30 minutes.
- the controllable load including the power storage system By utilizing the controllable load including the power storage system, consumers continue to consume the power purchased in slot units stably.
- stable means substantially constant, and “substantially” means the same within an error range.
- FIG. 1 shows the configuration of a distributed power supply trading market system 1000.
- the distributed power supply trading market system 1000 includes a power generator 100, a customer 200, a server 300, a power transmission and distribution company 400, and a retail electricity company 500.
- the number of the power generators 100 and the consumers 200 is “1”, but these numbers are not limited to “1”.
- the power generator 100 is, for example, a detached house, an apartment such as an apartment, a store such as a convenience store or a supermarket, a commercial facility such as a building, or a factory, and a facility that provides power to a power company or the like.
- a solar cell system is installed in the power generator 100.
- a renewable energy power generation device other than the solar cell system, a fuel cell system, or the like may be installed.
- the solar cell system is connected to a power system and outputs generated power to the power system. As a result, the generated power can be sold to the power transmission and distribution company 400 or the retail electricity company 500.
- the power generator 100 is provided with load devices such as an air conditioner (air conditioner), a television receiver (television), a lighting device, a power storage system, and a heat pump water heater.
- a power storage system is installed in the power generation house 100.
- the consumer 200 is, for example, a detached house, an apartment such as an apartment, a commercial facility such as a convenience store or a supermarket, a commercial facility such as a building, or a factory.
- the customer 200 is a facility that receives power supply from a power company or the like.
- the above-described load device is installed in the customer 200.
- the load device is connected to a power system, and receives supply of commercial power to consume power.
- a load device that is assumed to have a relatively large reduction in power consumption is useful, but a load device that is assumed to have a small reduction in power consumption may be used.
- the customer 200 is also provided with a power storage system. Further, the solar cell system may or may not be installed in the consumer 200.
- the power generator 100 and the customer 200 may be the same facility.
- the facility becomes the power generator 100 at a predetermined timing
- the facility becomes the customer 200 at another timing.
- the power generator 100 and the consumer 200 are separated for clarity of explanation.
- the transmission and distribution company 400 and the retail electricity company 500 are collectively referred to as a power company.
- the transmission and distribution company 400 maintains and operates transmission lines, substations, and the like in the supply area, and delivers electricity received from another party to another party.
- the power transmission and distribution company 400 receives the power generated by the power generator 100.
- the retail electricity supplier 500 supplies electricity according to general demand.
- the retail electricity supplier 500 supplies power to the customer 200.
- the retail electricity supplier 500 may receive the power generated by the power generator 100.
- the transmission and distribution company 400 and the retail electricity company 500 may be included in the same power company, but may be different companies.
- the server 300 mediates the buying and selling of electric power between the power generator 100 and the consumer 200 in the distributed power transaction market.
- the server 300 is connected to the power generator 100 and the consumer 200 and executes communication between them.
- the server 300 defines, for example, 30 minutes as one slot, and receives bid information for each slot from the power generator 100 and the consumer 200. Although the bid information will be described later, the bid information from the power generator 100 indicates the condition of power sale, and the bid information from the consumer 200 indicates the condition of power purchase.
- the server 300 determines the power generator 100 to sell power and the customer 200 to purchase power in a predetermined slot by matching bid information from the power generator 100 and the consumer 200.
- the server 300 transmits the successful bid information including the determined information to the power generator 100 and the consumer 200. According to the received successful bid information, the power generator 100 provides power to the customer 200 in a predetermined slot, and the customer 200 receives power supply from the power generator 100 in a predetermined slot.
- FIG. 2 is a flowchart showing a transaction procedure by the distributed power supply transaction market system 1000.
- the power generator 100 and the consumer 200 execute a process of participating in the distributed power transaction market (S10). By this processing, it is possible to participate in the trading of power in the distributed power trading market.
- the power generator 100 and the consumer 200 execute a bidding process (S12). At that time, the power generator 100 determines the power sellable capacity in the predetermined slot and the desired power sale price and bids, and the consumer 200 determines the power purchaseable capacity and the desired power purchase price in the predetermined slot. Decide and bid. Server 300 accepts these bids.
- the server 300 executes a successful bid process (S14). At that time, the server 300 executes a matching process between the power generator 100 and the customer 200 for the purchase and sale of power, and notifies the power generator 100 and the customer 200 of the result.
- the power generator 100 and the consumer 200 execute a power control process (S16). At that time, the power generator 100 controls the power of the reverse flow in a predetermined slot, and the customer 200 controls the power of the forward flow in a predetermined slot.
- the power generator 100, the consumer 200, and the server 300 execute a settlement process (S18). Here, the power purchase and sale results are confirmed, and the power purchase and sale amount is paid.
- the processing of the distributed power supply transaction market system 1000 is described as (1) the configuration of the power generator 100 and the consumer 200, (2) market participation processing, (3) bidding processing, (4) successful bid processing, and (5) power control. -The settlement process will be described in order.
- the power generator 100 is provided with a power system 10, a power meter 110, a distribution board 112, a load device 114, a solar cell system 116, a power storage system 118, a control system 120, and an operation device 122.
- the solar cell system 116 includes a PV (Photovoltaics) 130, a DC (Direct Current) / DC 132 for PV, and a DC / AC (Alternating Current) 134 for PV.
- Power storage system 118 includes SB (Storage Battery) 140, DC / DC 142 for SB, bidirectional DC / AC inverter 144, and control unit 146.
- the control system 120 includes a first communication unit 148, a control unit 150, a storage unit 152, a derivation unit 154, an acquisition unit 156, a determination unit 158, a reception unit 160, a second communication unit 162, and an input unit 164. Includes a processing unit 170.
- the control system 120 is connected to the server 300 outside the power generator 100 via the network 20.
- the solar cell system 116 and the power storage system 118 may be an integrated system.
- the power generation house 100 is a house, a store, a commercial facility, a factory, or the like. Here, a house or an apartment house is assumed.
- the power system 10 is provided by a power company or the like.
- the power meter 110 is a digital watt hour meter connected to the power system 10, and is, for example, a smart meter.
- the power meter 110 can measure the amount of forward power flowing from the power system 10 or the amount of reverse power flowing out of the power system 10.
- the former corresponds to the amount of purchased power or forward flow power, and the latter corresponds to the amount of sold power or reverse flow power.
- the power meter 110 can measure the power of the forward flow or the power of the reverse flow.
- the power meter 110 has a communication function, can communicate with the control system 120, and transmits a measurement result to the control system 120.
- the measurement result includes at least one of the electric energy and the electric power.
- the power meter 110 may be built in the distribution board 112.
- the distribution board 112 is connected to the power meter 110, and is connected to the power system 10 via the power meter 110. In addition, the distribution board 112 connects the load devices 114 and supplies power to the load devices 114.
- the load device 114 is a device that consumes power supplied from the distribution board 112.
- the load device 114 includes devices such as an air conditioner (air conditioner), a television receiver (television), a lighting device, and a refrigerator.
- one load device 114 is connected to the distribution board 112, but a plurality of load devices 114 may be connected to the distribution board 112.
- the load device 114 has a communication function and can communicate with the control system 120. Therefore, it can be said that the load device 114 is a load that can be controlled by the control system 120.
- PV130 is a solar cell, and is a renewable energy power generation device.
- the PV 130 directly converts light energy into electric power using the photovoltaic effect.
- As the solar cell a silicon solar cell, a solar cell using a compound semiconductor or the like, a dye-sensitized type (organic solar cell), or the like is used. Since the intensity of sunlight, which is a renewable energy, varies with weather and time, the power generated by the PV 130 also varies.
- the PV 130 is connected to the DC / DC 132 for PV, and outputs the generated DC power to the DC / DC 132 for PV.
- the DC / DC 132 for PV is a DC-DC converter, converts DC power output from the PV 130 into DC power having a desired voltage value, and outputs the converted DC power to the DC / AC 134 for PV.
- the DC / DC 132 for PV is composed of, for example, a step-up chopper.
- the DC / DC 132 for PV is subjected to MPPT (Maximum Power Point Recording) control so that the output power of the PV 130 is maximized.
- the DC / AC 134 for PV is a DC-AC inverter, converts DC power output from the DC / DC 132 for PV into AC power, and outputs the AC power to the distribution board 112.
- the PV 130, the DC / DC 132 for PV, and the DC / AC 134 for PV may be integrally formed, and in this case, this is referred to as a solar cell system 116.
- the solar cell system 116 may have a communication function, and may be able to communicate with the control system 120 by the communication function.
- SB140 is a storage battery capable of charging and discharging power, and includes a lithium ion storage battery, a nickel-metal hydride storage battery, a lead storage battery, an electric double layer capacitor, a lithium ion capacitor, and the like.
- SB 140 is connected to SB DC / DC 142.
- the SB DC / DC 142 is a DC-DC converter, and performs conversion between DC power on the SB 140 side and DC power on the bidirectional DC / AC inverter 144 side.
- the bidirectional DC / AC inverter 144 is connected between the DC / DC 142 for SB and the distribution board 112.
- the bidirectional DC / AC inverter 144 converts AC power from the distribution board 112 into DC power, and outputs the converted DC power to the DC / DC 142 for SB.
- the bidirectional DC / AC inverter 144 converts the DC power from the DC / DC for SB 142 into AC power, and outputs the converted AC power to the distribution board 112. That is, the SB 140 is charged and discharged by the bidirectional DC / AC inverter 144.
- the control of the bidirectional DC / AC inverter 144 is performed by the control unit 146.
- the control unit 146 has a communication function and can communicate with the control system 120.
- the SB 140, the DC / DC for SB 142, the bidirectional DC / AC inverter 144, and the control unit 146 may be stored in a single housing. Even in this case, this is referred to as a power storage system
- the control system 120 is a computer for executing the processing of the power management system, and has a function as, for example, a HEMS (Home Energy Management System) controller.
- the first communication unit 148 of the control system 120 can communicate with the power meter 110, the load device 114, and the power storage system 118 in the power generator 100.
- the first communication unit 148 uses a HAN (Home Area Network) to execute communication with the load device 114 and the power storage system 118, and a communication system other than the HAN to execute communication with the power meter 110.
- the first communication unit 148 may be capable of communicating with the distribution board 112 and the solar cell system 116.
- Control unit 150 controls the power flowing backward from power generator 100 to power system 10.
- the second communication unit 162 of the control system 120 connects to the network 20 by wireless communication or wired communication. Such a second communication unit 162 can communicate with the server 300 (not shown) via the network 20. The configuration and processing of the control system 120 will be described later.
- FIG. 4 shows the configuration of the customer 200.
- the power system 10 the power meter 210, the distribution board 212, the load device 214, the power storage system 218, the control system 220, and the operation device 222 are installed.
- Power storage system 218 includes SB 240, DC / DC 242 for SB, bidirectional DC / AC inverter 244, and control unit 246.
- the control system 220 includes a first communication unit 248, a control unit 250, a storage unit 252, a derivation unit 254, an acquisition unit 256, a determination unit 258, a reception unit 260, a second communication unit 262, and an input unit 264. Includes a processing unit 270.
- the control system 220 is connected to the server 300 outside the customer 200 via the network 20.
- the power meter 210 corresponds to the power meter 110
- the distribution board 212 corresponds to the distribution board 112
- the load device 214 corresponds to the load device 114
- the power storage system 218 corresponds to the power storage system 118.
- the control system 220 corresponds to the control system 120
- the operation device 222 corresponds to the operation device 122.
- the SB 240 corresponds to the SB 140
- the DC / DC for SB 242 corresponds to the DC / DC 142 for SB
- the bidirectional DC / AC inverter 244 corresponds to the bidirectional DC / AC inverter 144
- the control unit 246 corresponds to the control unit 146. I do.
- the first communication unit 248 corresponds to the first communication unit 148
- the control unit 250 corresponds to the control unit 150
- the storage unit 252 corresponds to the storage unit 152
- the derivation unit 254 corresponds to the derivation unit 154
- the acquisition unit. 256 corresponds to the acquiring unit 156
- the determining unit 258 corresponds to the determining unit 158.
- the receiving unit 260 corresponds to the receiving unit 160
- the second communication unit 262 corresponds to the second communication unit 162
- the input unit 264 corresponds to the input unit 164.
- the power generator 100 and the consumer 200 may be the same facility, but are shown here as different configurations.
- the control unit 250 controls the power flowing forward from the power system 10 to the customer 200.
- FIG. 5 is a sequence diagram showing a market participation processing procedure by the distributed power supply trading market system 1000.
- the power generator 100 and the consumer 200 contract with the retail electricity provider 500 (S100).
- the retail electricity supplier 500 starts power supply to the power generator 100 and the customer 200 (S102), and supplies power (S104).
- the load device 114, the solar cell system 116, the power storage system 118, and the control system 120 are introduced in the power generator 100, and the load device 214, the power storage system 218, and the control system 220 are introduced in the consumer 200 (S106).
- a contract with the power transmission and distribution company 400 is made in the power generation house 100.
- the power generator 100 and the consumer 200 notify the retail electric power company 500 of the application for participation in the distributed power transaction market (S110).
- the retail electricity supplier 500 receives the notification of the participation application (S112).
- the retail electricity supplier 500 approves participation in the distributed power transaction market (S114), and notifies the power generator 100 and the consumer 200 of the approval of participation (S116).
- the server 300 notifies the server 300 of the application for participation in the distributed power transaction market. (S120).
- the server 300 receives the notification of the participation application (S122).
- the server 300 approves the participation in the distributed power transaction market (S124), and notifies the power generator 100 and the consumer 200 of the approval of participation (S126). Upon receiving the participation approval from the server 300, the power generator 100 and the consumer 200 start participating in the distributed power transaction market (S128).
- the bidding process is a process performed in the power generator 100 and the consumer 200 before buying and selling power, and is a process for indicating a willingness to buy and sell power in a predetermined slot.
- the bid information indicating the power selling conditions in the power generator 100 is transmitted from the power generator 100 to the server 300
- the bid information indicating the power purchasing conditions in the customer 200 is transmitted from the customer 200 to the server 300. 300.
- the second communication unit 162 of the control system 120 in FIG. 3 communicates with a weather forecast server (not shown) via the network 20 and receives weather forecast information from the weather forecast server.
- the weather forecast information includes the weather forecast of each place and the precipitation probability. Information such as temperature may be included in the weather forecast information.
- the second communication unit 162 outputs the weather forecast information to the control unit 150, and the control unit 150 outputs the weather forecast information to the derivation unit 154.
- the derivation unit 154 acquires the weather forecast and the precipitation probability corresponding to the area where the power generator 100 is located from the weather forecast information.
- the deriving unit 154 manages calendar information, and acquires the current “month” as date information.
- the deriving unit 154 accesses the storage unit 152 via the control unit 150, and acquires information on the amount of power generated by the PV 130 based on the acquired weather forecast, precipitation probability, and date information.
- the storage unit 152 stores a table indicating a correspondence between the weather forecast, the probability of precipitation, the date information, and the amount of power generated by the PV 130.
- FIG. 6 shows a data structure of a table stored in the storage unit 152.
- Storage unit 152 stores a table for each combination of various weather forecasts, precipitation probabilities, and date information, and thus storage unit 152 stores a plurality of tables. From the plurality of tables, a table corresponding to a combination of the weather forecast, the precipitation probability, and the date information acquired by the derivation unit 154 is selected.
- Each table shows the maximum value and the minimum value of the generated power amount in each of the plurality of slots. For example, in the slot starting at 5:00, the maximum value “A1” of the generated power amount and the minimum value “B1” of the generated power amount are indicated.
- the data structure of the table stored in storage section 152 is not limited to FIG.
- the temperature may be added to the parameter for selecting the table, or the date information may be subdivided not into "May” but into "1st week of May".
- the deriving unit 154 extracts the maximum value and the minimum value of the generated power amount of the slot for which a bid is desired, based on the generated power amount information acquired from the storage unit 152, based on the current time.
- the slot for which a bid is desired is, for example, the slot that arrives earliest from the current time.
- the deriving unit 154 derives the generated power amount in the slot by calculating the average of the maximum value and the minimum value of the extracted generated power amount.
- the deriving unit 154 may execute a statistical process other than the average.
- the derivation unit 154 receives information on the storage capacity of the SB 140 from the control unit 146 of the power storage system 118 via the control unit 150 and the first communication unit 148.
- An example of the information on the storage capacity is information on the capacity charged in the SB 140, and may be SoC (State of charge).
- the deriving unit 154 calculates a difference between the storage capacity of the SB 140 and a value of 1/2 of the capacity of the SB 140. When the difference is equal to or greater than 0, that is, when the capacity charged in SB 140 is equal to or greater than ⁇ of the capacity of SB 140, derivation unit 154 adds the absolute value of the difference to the amount of generated electric power, and Deriving available capacity.
- deriving section 154 subtracts the absolute value of the difference from the generated power amount. Deriving the power available capacity. That is, the power sellable capacity is derived based on the amount of power generated by the PV 130 in the predetermined slot, but also reflects the power storage capacity of the power storage system 118 in the predetermined slot. Such derivation of the sellable capacity may be performed for each slot.
- the derivation unit 154 outputs the available power capacity to the acquisition unit 156.
- the obtaining unit 156 obtains the available power capacity from the deriving unit 154.
- the acquisition unit 156 outputs the available power capacity to the determination unit 158 and the processing unit 170.
- the table stored in the storage unit 152 may be updated to reflect the actual amount of generated power.
- the solar cell system 116 measures the amount of generated power in each slot. Since a known technique may be used for measuring the amount of generated power, the description is omitted here.
- the solar cell system 116 transmits information on the measured amount of generated power to the control system 120.
- the first communication unit 148 of the control system 120 outputs the received information on the amount of generated power to the control unit 150.
- the control unit 150 selects a table corresponding to a combination of the weather forecast, the precipitation probability, and the date information acquired by the derivation unit 154 from among the plurality of tables stored in the storage unit 152, and generates the power generation indicated in the table. Specify the maximum and minimum values of the electric energy.
- control unit 150 sets the maximum value in the table to be the amount of generated power received from solar cell system 116. To update. On the other hand, when the generated power amount received from solar cell system 116 is smaller than the minimum value in the table corresponding to the current time, control unit 150 sets the generated power amount in the table to be the received power amount from solar cell system 116. Update the minimum value.
- the operation device 122 is an interface that can be operated by the user, and is, for example, a keyboard and a touch panel.
- the user operates the operation device 122 to input a desired power selling price per unit amount of power (hereinafter, referred to as “desired power selling price”). If the power selling price is equal to or higher than the desired power selling price, the power generator 100 sets the desired power selling price based on a policy for requesting power selling.
- the receiving unit 160 receives an input of a desired power selling price.
- the receiving unit 160 outputs the desired power selling price to the processing unit 170.
- the processing unit 170 receives the power sellable capacity from the acquisition unit 156 and receives the desired power sale price from the reception unit 160.
- the processing unit 170 generates bid information including the desired power selling price and the power selling available capacity.
- the bid information also includes identification information for identifying the power generator 100 (hereinafter, referred to as “power generator ID”) and information on a slot for which power sale is desired.
- the information of the slot for which power sale is desired is indicated by, for example, the start time of the slot.
- the processing section 170 outputs the bid information to the second communication section 162.
- the second communication unit 162 transmits the bid information generated by the processing unit 170 to the server 300.
- the server 300 receives the bid information from the power generator 100.
- the deriving unit 254 of the control system 220 in FIG. 4 manages calendar information, acquires the current “month” as date information, and acquires the current “day” as day information.
- the derivation unit 254 accesses the storage unit 252 via the control unit 250, and acquires information on the power consumption of the load device 214 based on the acquired date information and day information.
- the storage unit 252 stores a table indicating a correspondence relationship between the date information, the day of the week information, and the power consumption of the load device 214.
- FIG. 7 shows a data structure of a table stored in the storage unit 252.
- a table showing the power consumption when the date information is “May” and the day information is “Sunday” is shown.
- the storage unit 252 stores a table for each of various combinations of date information and day information, and thus the storage unit 252 stores a plurality of tables.
- a table corresponding to the combination of the date information and the day of the week information acquired by the derivation unit 254 is selected from the plurality of tables.
- Each table shows a maximum value and a minimum value of power consumption in each of the plurality of slots.
- a maximum value “C1” of the power consumption and a minimum value “D1” of the power consumption are shown.
- the data structure of the table stored in the storage unit 252 is not limited to FIG.
- the date information may be subdivided not as “May” but as “May 1st week”. Referring back to FIG.
- the derivation unit 254 extracts the maximum value and the minimum value of the power consumption of the slot for which a bid is desired, based on the current power consumption information acquired from the storage unit 252, based on the current time. Again, the slot for which a bid is desired is, for example, the slot that arrives earliest from the current time.
- the deriving unit 254 derives the power consumption in the slot by calculating the average of the maximum value and the minimum value of the extracted power consumption.
- the derivation unit 254 may execute a statistical process other than the average.
- the deriving unit 254 receives information on the storage capacity of the SB 240 from the control unit 246 of the power storage system 218 via the control unit 250 and the first communication unit 248.
- the deriving unit 254 calculates a difference between the storage capacity of the SB 240 and a value of ⁇ of the capacity of the SB 240.
- deriving section 254 subtracts the absolute value of the difference from the power consumption to purchase power. Deriving available capacity.
- deriving section 254 adds the absolute value of the difference to the power consumption amount. Deriving power purchase capacity. That is, the power purchaseable capacity in the customer 200 is derived based on the power consumption of the load device 214 in the predetermined slot, but also reflects the power storage capacity of the power storage system 218 in the predetermined slot. Such derivation of the power purchaseable capacity may be performed for each slot.
- the derivation unit 254 outputs the power purchaseable capacity to the acquisition unit 256.
- the acquisition unit 256 acquires the power purchaseable capacity from the derivation unit 254.
- the acquisition unit 256 outputs the available power capacity to the determination unit 258 and the processing unit 270.
- the table stored in the storage unit 252 may be updated to reflect the actual power consumption.
- the load device 214 measures power consumption in each slot. Since a known technique may be used for measuring the power consumption, the description is omitted here.
- the load device 214 transmits information on the measured power consumption to the control system 220.
- the first communication unit 248 of the control system 220 outputs the received information on the amount of generated power to the control unit 250.
- the control unit 250 selects a table corresponding to the date information and the day-of-week information acquired by the derivation unit 254 from the plurality of tables stored in the storage unit 252, and then selects the power consumption amount indicated in the table. Identify the maximum and minimum values.
- the control unit 250 updates the maximum value of the table to be the power consumption received from the load device 214. I do. On the other hand, if the power consumption received from the load device 214 is smaller than the minimum value of the table corresponding to the current time, the control unit 250 sets the minimum value of the table to be the power consumption received from the load device 214. To update.
- the user operates the operation device 222 to input a desired power purchase price per unit amount of power (hereinafter, referred to as “desired power purchase price”). If the power purchase price is equal to or less than the desired power purchase price, the customer 200 sets the desired power purchase price based on the policy for power purchase.
- Receiving unit 260 receives an input of a desired power selling price. Accepting section 260 outputs the desired power selling price to processing section 270.
- the processing unit 270 receives the power purchaseable capacity from the acquisition unit 256 and receives a desired power purchase price from the reception unit 260.
- the processing unit 270 generates bid information including the desired purchase price and the purchaseable capacity.
- the bid information also includes identification information for identifying the customer 200 (hereinafter, referred to as “customer ID”) and information on a slot for which power purchase is desired.
- the information of the slot for which power purchase is desired is indicated by, for example, the start time of the slot.
- the processing unit 270 outputs the bid information to the second communication unit 262.
- the second communication unit 262 transmits the bid information generated in the processing unit 270 to the server 300.
- the server 300 receives the bid information from the customer 200.
- FIG. 8 is a sequence diagram showing a bidding process procedure by the distributed power supply transaction market system 1000.
- the power generator 100 receives the desired power selling price (S200).
- the consumer 200 receives the desired power purchase price (S202).
- the power generation house 100 acquires the sellable capacity (S204).
- the consumer 200 acquires the power purchaseable capacity (S206).
- the power generator 100 generates bid information so as to include the desired power selling price and the power available capacity (S208).
- the consumer 200 generates bid information so as to include the desired purchase price and the purchaseable capacity (S210).
- the power generator 100 transmits the bid information (S212), and the server 300 receives the bid information (S214).
- the customer 200 transmits the bid information (S216), and the server 300 receives the bid information (S218).
- the successful bid process is a process performed in the server 300 that has received the bid information from the power generator 100 and the customer 200, and a process of matching the power generator 100 to be bought and sold with the customer 200. It is. The result of the matching is transmitted from the server 300 to the power generator 100 and the customer 200 as a successful bid process.
- FIG. 9 shows the configuration of the server 300.
- the server 300 includes a communication unit 310, a processing unit 312, and a storage unit 314.
- the communication unit 310 is connected to the network 20 and communicates with the power generator 100 and the consumer 200 via the network 20.
- Communication unit 310 receives bid information from power generator 100 and consumer 200.
- Communication unit 310 outputs the bid information to processing unit 312.
- the processing unit 312 collectively stores the bid information for one slot in the storage unit 314.
- the storage unit 314 stores a database including bid information for one slot under the control of the processing unit 312.
- FIGS. 10A and 10B show the data structure of the database stored in the storage unit 314.
- FIG. 10A shows bid information for one slot and bid information from a plurality of power generators 100. As shown in the figure, a combination of a power generator ID, a desired power sale price, and a power available capacity is stored for each power generator 100.
- FIG. 10B shows bid information for one slot and bid information from a plurality of customers 200. As shown, for each customer 200, a combination of a customer ID, a desired purchase price, and a purchaseable capacity is stored. It returns to FIG.
- Processing unit 312 executes matching processing between power generator 100 and customer 200 for one slot based on the database stored in storage unit 314.
- the processing unit 312 refers to the desired power selling price in the database illustrated in FIG. 10A and extracts the combination of the lowest desired power selling price and the power sellable capacity corresponding to the desired power selling price. I do. Subsequently, the processing unit 312 extracts a combination of the next lowest desired power sale price and the power available capacity corresponding to the desired power sale price.
- the processing unit 312 repeats such processing while increasing the desired power selling price. Along with these processes, the processing unit 312 sequentially accumulates the power sellable capacity while increasing the desired power sale price.
- FIG. 11 shows an outline of the processing in the processing unit 312.
- the horizontal axis indicates price, and the vertical axis indicates electric energy.
- An example of a price is a desired power selling price.
- a result obtained by sequentially integrating the power sellable capacities while increasing the desired power sale price is shown as an accumulated power sale power amount 600.
- the accumulated power selling amount 600 is small when the desired power selling price is low, and increases as the desired power selling price increases. It returns to FIG.
- the processing unit 312 refers to the desired purchase price in the database illustrated in FIG. 10B and extracts the combination of the highest desired purchase price and the purchaseable capacity corresponding to the desired purchase price. I do. Subsequently, the processing unit 312 extracts a combination of the next highest desired purchase price and a purchaseable capacity corresponding to the desired purchase price. The processing unit 312 repeats such processing while lowering the desired power purchase price. Along with these processes, the processing unit 312 sequentially accumulates the power purchaseable capacity while lowering the desired power purchase price.
- An example of the price in FIG. 11 is a desired power purchase price, and a result obtained by sequentially integrating power purchaseable capacities while decreasing the desired power purchase price is indicated as an accumulated power purchase power amount 602.
- the accumulated purchased power amount 602 is small when the desired purchase price is high, and increases as the desired purchase price decreases.
- the price at which the cumulative power sold 600 and the cumulative power purchased 602 match is indicated by “x”. Since the accumulated electric power sold 600 and the accumulated purchased electric energy 602 match the price “x”, it can be said that the price “x” is the price specified by the matching process.
- the processing unit 312 specifies a combination of a power generator ID and a power sellable capacity at a desired power sale price that is equal to or less than the price “x” in the database illustrated in FIG. Further, the processing unit 312 generates successful bid information for each of the specified power generator IDs.
- the successful bid information includes information on a slot to be sold.
- the processing unit 312 specifies a combination of the customer ID and the purchaseable capacity that are the desired purchase price that is equal to or higher than the price “x” in the database illustrated in FIG. Further, the processing unit 312 generates successful bid information for each of the identified customer IDs.
- the successful bid information includes information on a slot to be purchased.
- the communication unit 310 transmits the successful bid information generated in the processing unit 312 to the power generator 100 and the consumer 200 via the network 20.
- FIG. 12 is a sequence diagram showing a successful bid processing procedure by the distributed power supply transaction market system 1000.
- the server 300 stores the bid information (S300).
- the server 300 performs a matching process based on the stored bid information (S302).
- the server 300 generates successful bid information (S304).
- the server 300 transmits the successful bid information to the power generator 100 (S306) and also transmits the successful bid information to the consumer 200 (S308).
- the power generator 100 receives the successful bid information (S310), and the consumer 200 receives the successful bid information (S312).
- the power control processing includes control in which the successful bid power generator 100 causes the power to flow in the reverse direction stably, and control in which the successful bid customer 200 causes the power to flow in the forward power direction in a stable manner.
- the first communication unit 148 in the control system 120 in FIG. 3 sequentially receives the measurement results from the power meter 110 and outputs the measurement results to the input unit 164.
- the input unit 164 receives the measurement result from the first communication unit 148, that is, the measurement result of the power flowing backward from the power generator 100 to the power system 10.
- the input unit 164 outputs the measurement result of the power to the control unit 150.
- the second communication unit 162 After transmitting the bid information to the server 300, the second communication unit 162 receives the successful bid information from the server 300. The second communication unit 162 outputs the successful bid information to the control unit 150.
- the control unit 150 instructs the determination unit 158 to determine a threshold value for the power flowing backward from the power generator 100.
- determining unit 158 receives an instruction to determine a threshold value from control unit 150, determining unit 158 determines a threshold value based on the available power capacity acquired by acquiring unit 156. Since the sellable capacity is indicated by the amount of power in units of slots, the determination unit 158 derives a threshold greater than zero by dividing the sellable capacity by the slot time. Derivation of the threshold is not limited to this. Determination unit 158 outputs the threshold value to control unit 150.
- the control unit 150 extracts slot information from the successful bid information. When the slot indicated in the slot information arrives, the control unit 150 uses the measurement result received at the input unit 164 and the threshold value determined by the determination unit 158 to switch from the power generator 100 to the power system 10. Controls the power flowing backward. This control is performed during the slot indicated in the slot information, that is, while the power is flowing backward from the generator 100 to the power system 10.
- control unit 150 determines charging of the power storage system 118 when the measurement result exceeds the threshold value.
- Control unit 150 generates a first instruction signal for instructing power storage system 118 to charge, and transmits the first instruction signal to power storage system 118 via first communication unit 148.
- Control unit 146 of power storage system 118 controls bidirectional DC / AC inverter 144 such that SB 140 is charged according to the received first instruction signal.
- the control unit 146 measures the storage capacity of the SB 140 and generates information on the storage capacity of the SB 140.
- Control unit 146 transmits information on the storage capacity of SB 140 to control system 120.
- the control unit 150 of the control system 120 receives information on the storage capacity of the SB 140 via the first communication unit 148.
- control unit 150 repeats the above-described processing and transmits the first instruction signal. On the other hand, if the storage capacity of SB 140 is equal to or greater than the upper limit, transmission of the first instruction signal is stopped.
- the upper limit is set to be equal to or less than the capacity of SB 140.
- control unit 150 When the storage capacity of SB 140 is equal to or greater than the upper limit and transmission of the first instruction signal is stopped, control unit 150 generates a second instruction signal for instructing load device 114 to increase power consumption, and The data is transmitted to the load device 114 via one communication unit 148.
- the load device 114 increases power consumption according to the received second instruction signal. For example, when the load device 114 is a cooling device, the set temperature is reduced and the air volume is increased.
- the load device 114 increases power consumption while receiving the second instruction signal.
- the control unit 150 stops transmission of the first instruction signal or the second instruction signal when a transition is made from when the measurement result exceeds the threshold to when the measurement result does not exceed the threshold. After the control of the power storage system 118 is performed, the control of the load device 114 is performed. However, control unit 150 may execute control on power storage system 118 after executing control on load device 114.
- Control unit 150 determines to discharge power storage system 118 when the measurement result is below the threshold value. Control unit 150 generates a third instruction signal for instructing power storage system 118 to perform discharge, and transmits the third instruction signal to power storage system 118 via first communication unit 148. Control unit 146 of power storage system 118 controls bidirectional DC / AC inverter 144 such that SB 140 is discharged according to the received third instruction signal. Subsequently, the control unit 146 measures the storage capacity of the SB 140 and generates information on the storage capacity of the SB 140. Control unit 146 transmits information on the storage capacity of SB 140 to control system 120. The control unit 150 of the control system 120 receives information on the storage capacity of the SB 140 via the first communication unit 148.
- control unit 150 repeats the above-described processing and transmits the third instruction signal. On the other hand, if the storage capacity of SB 140 is equal to or less than the lower limit, transmission of the third instruction signal is stopped.
- the lower limit is set to zero or more.
- control unit 150 When the storage capacity of SB 140 is equal to or less than the lower limit and transmission of the third instruction signal is stopped, control unit 150 generates a fourth instruction signal for instructing load device 114 to suppress power consumption, The data is transmitted to the load device 114 via one communication unit 148.
- the load device 114 suppresses power consumption according to the received fourth instruction signal. For example, when the load device 114 is a cooling device, the set temperature is increased and the air volume is reduced. The load device 114 suppresses power consumption while receiving the fourth instruction signal.
- the control unit 150 stops transmission of the third instruction signal or the fourth instruction signal when a transition occurs from a case where the measurement result falls below the threshold to a case where the measurement result does not fall below the threshold. After the control of the power storage system 118 is performed, the control of the load device 114 is performed. However, control unit 150 may execute control on power storage system 118 after executing control on load device 114.
- the first communication unit 248 in the control system 220 of FIG. 4 sequentially receives the measurement results from the power meter 210 and outputs the measurement results to the input unit 264.
- the input unit 264 receives a measurement result from the first communication unit 248, that is, a measurement result of power flowing forward from the power system 10 to the customer 200.
- Input unit 264 outputs the measurement result of the power to control unit 250.
- the second communication unit 262 After transmitting the bid information to the server 300, the second communication unit 262 receives the successful bid information from the server 300. The second communication unit 262 outputs the successful bid information to the control unit 250.
- the control unit 250 instructs the determination unit 258 to determine a threshold value for the power to flow forward to the customer 200.
- determination unit 258 determines a threshold value based on the power purchaseable capacity acquired by acquisition unit 256. Since the available power is indicated by the amount of power in units of slots, the determination unit 258 derives a threshold value greater than zero by dividing the available power by the slot time. Derivation of the threshold is not limited to this. Determination unit 258 outputs the threshold value to control unit 250.
- the control unit 250 extracts slot information from the successful bid information.
- the control unit 250 uses the measurement result received at the input unit 264 and the threshold value determined by the determination unit 258 to transmit from the power system 10 to the customer 200. Controls forward power flow. This control is performed during the slot indicated in the slot information, that is, while the power is flowing forward from the power system 10 to the customer 200.
- control unit 250 determines the discharge of the power storage system 218 when the measurement result exceeds the threshold value.
- Control unit 250 generates a fifth instruction signal for instructing power storage system 218 to perform a discharge, and transmits the fifth instruction signal to power storage system 218 via first communication unit 248.
- Control unit 246 of power storage system 218 controls bidirectional DC / AC inverter 244 such that SB 240 is discharged according to the received fifth instruction signal.
- the control unit 246 measures the storage capacity of the SB 240 and generates information on the storage capacity of the SB 240.
- the control unit 246 transmits information on the storage capacity of the SB 240 to the control system 220.
- the control unit 250 of the control system 220 receives information about the storage capacity of the SB 240 via the first communication unit 248. If the storage capacity of SB 240 is larger than the lower limit, control unit 250 repeats the above-described processing and transmits a fifth instruction signal. On the other hand, if the storage capacity of SB 240 is equal to or less than the lower limit, transmission of the fifth instruction signal is stopped.
- the lower limit is set to zero or more.
- control unit 250 When the storage capacity of SB 240 is equal to or less than the lower limit and transmission of the fifth instruction signal is stopped, control unit 250 generates a sixth instruction signal for instructing load device 214 to suppress power consumption, 1 to the load device 214 via the communication unit 248.
- the load device 214 suppresses power consumption according to the received sixth instruction signal.
- the load device 214 suppresses power consumption while receiving the sixth instruction signal.
- the control unit 250 stops the transmission of the fifth instruction signal or the sixth instruction signal when a transition is made from when the measurement result exceeds the threshold to when the measurement result does not exceed the threshold.
- the control of the load device 214 After the control of the power storage system 218 is performed, the control of the load device 214 is performed. However, control unit 250 may execute control on power storage system 218 after executing control on load device 214.
- Control unit 250 determines to charge power storage system 218 when the measurement result is below the threshold value. Control unit 250 generates a seventh instruction signal for instructing power storage system 218 to charge, and transmits the seventh instruction signal to power storage system 218 via first communication unit 248. Control unit 246 of power storage system 218 controls bidirectional DC / AC inverter 244 to charge SB 240 according to the received seventh instruction signal. Subsequently, the control unit 246 measures the storage capacity of the SB 240 and generates information on the storage capacity of the SB 240. The control unit 246 transmits information on the storage capacity of the SB 240 to the control system 220. The control unit 250 of the control system 220 receives information about the storage capacity of the SB 240 via the first communication unit 248.
- control section 250 repeats the above-described processing and transmits a seventh instruction signal. On the other hand, if the storage capacity of SB 240 is equal to or greater than the upper limit, transmission of the seventh instruction signal is stopped.
- the upper limit is set to be equal to or less than the capacity of SB240.
- the control unit 250 When the storage capacity of the SB 240 is equal to or larger than the upper limit value and the transmission of the seventh instruction signal is stopped, the control unit 250 generates an eighth instruction signal for instructing the load device 214 to increase power consumption, 1 to the load device 214 via the communication unit 248.
- the load device 214 increases power consumption according to the received eighth instruction signal.
- the load device 214 increases power consumption while receiving the eighth instruction signal.
- the control unit 250 stops transmission of the seventh instruction signal or the eighth instruction signal when transitioning from a case where the measurement result falls below the threshold to a case where the measurement result does not fall below the threshold.
- the control of the load device 214 After the control of the power storage system 218 is performed, the control of the load device 214 is performed. However, control unit 250 may execute control on power storage system 218 after executing control on load device 214.
- the power control processing described so far is performed until the target slot ends.
- the settlement process is a process in which the electricity bill is settled after the purchase and sale of power between the power generator 100 and the customer 200 in a predetermined slot is completed.
- the first communication unit 148 in the control system 120 of FIG. 3 receives the measurement result from the power meter 110 and outputs the measurement result to the input unit 164.
- This measurement result includes information on the amount of power in the slot in which the power was sold, that is, information on the amount of power sold.
- the input unit 164 receives the measurement result from the first communication unit 148, that is, the measurement result of the amount of power sold.
- the input unit 164 outputs the measurement result of the amount of power sold to the control unit 150.
- the control unit 150 generates measurement data including the measurement result of the power sale amount received from the input unit 164.
- the measurement data also includes information on the power generator ID and the slot in which the power was sold.
- the control unit 150 transmits the measurement data to the server 300 via the second communication unit 162 and the network 20.
- the first communication unit 248 in the control system 220 in FIG. 4 receives the measurement result from the power meter 210 and outputs the measurement result to the input unit 264.
- This measurement result includes information on the amount of power in the slot in which the power purchase was executed, that is, information on the amount of power purchase.
- the input unit 264 receives the measurement result from the first communication unit 248, that is, the measurement result of the power purchase amount.
- the input unit 264 outputs the measurement result of the power purchase amount to the control unit 250.
- the control unit 250 generates measurement data including the measurement result of the power purchase amount received from the input unit 264.
- the measurement data also includes information on the customer ID and the slot in which the power purchase was executed.
- the control unit 250 transmits the measurement data to the server 300 via the second communication unit 262 and the network 20.
- the communication unit 310 in FIG. 9 receives measurement data from the power generator 100 and the consumer 200.
- the communication unit 310 outputs the measurement data to the processing unit 312.
- the processing unit 312 extracts, from the received measurement data, information on the slot in which the power sale or power purchase was executed, and collects measurement data for the same slot. Further, the processing unit 312 performs a settlement process on a combination of the generator ID and the measurement result of the power sale amount and a combination of the customer ID and the measurement result of the power purchase amount based on the collected measurement data. Since a known technique may be used for the settlement process, the description is omitted here. At that time, an incentive for the power generator 100 or the consumer 200 may be calculated.
- FIG. 13 is a sequence diagram showing a power control / payment processing procedure by the distributed power supply transaction market system 1000.
- the power generator 100 starts selling power (S400), and the consumer 200 starts buying power (S402).
- the generator 100 keeps the power of the reverse flow constant (S404), and the customer 200 keeps the power of the forward flow constant (S406).
- the power generator 100 ends the power sale (S408), and the consumer 200 ends the power purchase (S410).
- the power generator 100 transmits the measurement data to the server 300 (S412), and the customer 200 transmits the measurement data to the server 300 (S414).
- the server 300 performs a settlement process (S416).
- the subject of the device, system, or method in the present disclosure includes a computer.
- the computer executes the program, the main function of the device, system, or method according to the present disclosure is realized.
- the computer includes, as a main hardware configuration, a processor that operates according to a program.
- the type of the processor is not limited as long as the function can be realized by executing the program.
- the processor is configured by one or a plurality of electronic circuits including a semiconductor integrated circuit (IC) or an LSI (Large Scale Integration).
- the plurality of electronic circuits may be integrated on one chip, or may be provided on a plurality of chips.
- a plurality of chips may be integrated in one device, or may be provided in a plurality of devices.
- the program is recorded on a non-transitory recording medium such as a computer-readable ROM, an optical disk, and a hard disk drive.
- the program may be stored in a recording medium in advance, or may be supplied to the recording medium via a wide area communication network including the Internet or the like.
- the power consumption of the load device 114 is increased, so that the power flowing backward can approach the threshold.
- the power storage system 118 is charged when the power flowing backward exceeds the threshold value, the power flowing backward can approach the threshold value.
- the load device 114 suppresses the power consumption, so that the power flowing backward can approach the threshold value.
- the power storage system 118 is discharged, so that the power flowing backward can approach the threshold. Further, since the power flowing backward flows approaches the threshold value, the fluctuation of the power flowing backward can be reduced.
- the threshold value is determined from the available power capacity derived based on the amount of power generated by the solar cell system 116, the threshold value can be set according to the power generation status. Further, since the power storage capacity of the power storage system 118 in a predetermined time zone is also reflected in the power sellable capacity, control can be performed in consideration of the power storage capacity of the power storage system 118. Further, since the bid information including the desired power selling price and the power selling available capacity is transmitted to the server 300, the bid can be executed while presenting the desired power selling price and the power selling available capacity. Also, since the input of the desired power selling price is received, the desired power selling price according to the user's request can be set. Further, when the successful bid information is received, the control of the power flowing backward is performed, so that the control according to the available power capacity can be performed.
- the load device 214 suppresses the power consumption, so that the forward flowing power can approach the threshold.
- the power storage system 218 is discharged, so that the power flowing forward can approach the threshold.
- the power consumption of the load device 214 is increased, so that the forward flowing power can approach the threshold.
- the power storage system 218 is charged when the forward flowing power is lower than the threshold value, the forward flowing power can approach the threshold value.
- the fluctuation of the forward flowing power can be reduced.
- the threshold value is determined based on the power purchaseable capacity in the customer 200, the threshold value according to the power purchaseable capacity can be set.
- the power consumption of the load device 214 in a predetermined time period is reflected in the power purchaseable capacity, it is possible to execute control in consideration of the power consumption of the load device 214.
- control can be performed in consideration of the storage capacity of the power storage system 218.
- the bid information including the desired purchase price and the purchaseable capacity is transmitted to the server 300, the bid can be executed while presenting the desired purchase price and the purchaseable capacity. Further, since the input of the desired purchase price is received, the desired purchase price according to the user's request can be set. Further, when the successful bid information is received, the control of the power flowing forward is executed, so that the control according to the power purchaseable capacity can be executed.
- the outline of one embodiment of the present disclosure is as follows.
- An input unit 164 that receives a measurement result of power flowing backward from the power generator 100 to the power system 10;
- a control unit 150 for controlling power flowing backward from the power generator 100 to the power system 10 based on the measurement result received at the input unit 164; While the control unit 150 is performing reverse power flow from the power generator 100 to the power system 10,
- (I) When the measurement result received at the input unit 164 exceeds a threshold value greater than zero, the power consumption of the load device 114 installed in the power generator 100 is increased, or Charge the installed power storage system 118, (Ii) when the measurement result received at the input unit 164 is below the threshold value, the load device 114 suppresses power consumption or discharges the power storage system 118; Control system 120.
- the power generator 100 includes a solar cell system 116 that generates power using renewable energy, An acquisition unit 156 that acquires a power sellable capacity derived based on the amount of power generated by the solar cell system 116 in a predetermined time zone; A determination unit 158 that determines the threshold value used in the control unit 150 based on the available power capacity acquired by the acquisition unit 156;
- the control system 120 according to item 1-1 or 1-2, further comprising:
- the power sale capacity acquired by the acquisition unit 156 also reflects the electricity storage capacity of the electricity storage system 118 in the predetermined time zone.
- the control system 120 according to item 1-3.
- a second communication unit 162 that communicates with the server 300 that mediates the power trading market; The second communication unit 162 transmits, to the server 300, bid information including a desired price per unit power amount and the power sellable capacity acquired by the acquisition unit 156.
- the control system 120 according to item 1-3 or 1-4.
- the apparatus further includes a receiving unit 160 that receives the price input.
- the control system 120 according to item 1-5.
- the control unit 150 includes: The second communication unit 162 transmits the bidding information to the server 300, and then, when receiving the successful bid information from the server 300, determines the measurement result received by the input unit 164 and the determination unit 158. Performing control using the threshold and The control system 120 according to item 1-5 or 1-6.
- An input unit 264 for receiving a measurement result of power flowing forward from the power system 10 to the customer 200; While power is flowing forward from the power system 10 to the customer 200, (I) When the measurement result received at the input unit 264 exceeds a threshold value greater than zero, the load device 214 installed in the customer 200 suppresses power consumption, or Discharge the installed power storage system 218, (Ii) a control unit 250 that causes the load device 214 to increase power consumption or charge the power storage system 218 when the measurement result received at the input unit 264 is below the threshold value; An acquiring unit 256 for acquiring a power purchaseable capacity of the customer 200 in a predetermined time zone, A determining unit 258 that determines the threshold value used in the control unit 250 based on the power purchaseable capacity acquired by the acquiring unit 256; A control system 220 comprising:
- the power purchaseable capacity acquired by the acquisition unit 256 reflects the power consumption of the load device 214 in the predetermined time zone.
- the control system 220 according to item 2-1 or 2-2.
- the power purchaseable capacity acquired by the acquisition unit 256 also reflects the power storage capacity of the power storage system 218 in the predetermined time zone.
- the control system 220 according to item 2-3.
- a second communication unit 262 that communicates with the server 300 that mediates the power trading market; The second communication unit 262 transmits to the server 300 bid information including a desired price per unit amount of power and the power purchaseable capacity acquired by the acquisition unit 256.
- the control system 220 according to item 2-3 or 2-4.
- the apparatus further includes a receiving unit 260 that receives the input of the price.
- the control system 220 according to item 2-5.
- the control unit 250 includes: The second communication unit 262 transmits the bidding information to the server 300 and then, when receiving the successful bid information from the server 300, determines the measurement result received by the input unit 264 and the determination unit 258. Performing control using the threshold and The control system 220 according to item 2-5 or 2-6.
- (Item 2-8) Receiving a measurement result of power flowing forward from the power system 10 to the customer 200; While power is flowing forward from the power system 10 to the customer 200, (I) When the received measurement result exceeds a threshold value greater than zero, the load device 214 installed in the customer 200 suppresses power consumption, or the power storage system installed in the customer 200 Discharge 218, (Ii) increasing the power consumption of the load device 214 or charging the power storage system 218 when the received measurement result falls below the threshold value; Obtaining a purchaseable capacity of the customer 200 in a predetermined time zone; Determining the threshold value based on the acquired power available capacity;
- a control method comprising:
- the second embodiment relates to a distributed power supply transaction market system including a power generator and a consumer.
- the power flowing backward from the power generator to the power system is controlled based on the measured power, and the consumer flows forward from the power system to the customer based on the measured power.
- the power generator according to the second embodiment the amount of power flowing backward from the power generator to the power system is controlled based on the measured power amount. Controls the amount of power flowing forward to consumers. That is, in the second embodiment, the unit of control is changed from electric power to electric energy.
- the distributed power supply transaction market system 1000, the power generator 100, the consumer 200, and the server 300 according to the second embodiment are the same types as those in FIGS. 1, 3, 4, and 9.
- the description will focus on differences from the first embodiment.
- (2) market participation processing, (3) bidding processing, and (4) successful bid processing are the same as those in the first embodiment, and thus description thereof is omitted here.
- the first communication unit 148 in the control system 120 in FIG. 3 receives the measurement result from the power meter 110 and outputs the measurement result to the input unit 164.
- the input unit 164 receives the measurement result from the first communication unit 148, that is, the measurement result of the amount of power flowing backward from the power generator 100 to the power system 10.
- the input unit 164 outputs the measurement result of the electric energy to the control unit 150.
- determination unit 158 determines a threshold based on the available power capacity acquired by acquisition unit 156. For example, the determination unit 158 sets the power sellable capacity as a threshold. Derivation of the threshold is not limited to this. Determination unit 158 outputs the threshold value to control unit 150.
- the control unit 150 extracts slot information from the successful bid information.
- the control unit 150 uses the measurement result received at the input unit 164 and the threshold value determined by the determination unit 158 to switch from the power generator 100 to the power system 10. Controls the amount of power flowing backward.
- the control based on the comparison between the measurement result and the threshold value is the same as in the first embodiment, except that the measurement result is expected to exceed the threshold value, or the measurement result is expected to fall below the threshold value. Control is performed when the The case where the measurement result is expected to exceed the threshold value corresponds to the case where the measurement result exceeds the threshold value in the slot when the measurement result continues to fluctuate. The same applies when the measurement result is expected to be below the threshold. This control is performed during the slot indicated in the slot information, that is, while the power is flowing backward from the generator 100 to the power system 10.
- the first communication unit 248 in the control system 220 in FIG. 4 has received the measurement result from the power meter 210 and outputs the measurement result to the input unit 264.
- the input unit 264 receives the measurement result from the first communication unit 248, that is, the measurement result of the amount of power flowing forward from the power system 10 to the customer 200.
- the input unit 264 outputs the measurement result of the electric energy to the control unit 250.
- determination unit 258 determines a threshold based on the power purchaseable capacity acquired by acquisition unit 256. For example, the determination unit 258 sets the power purchaseable capacity as a threshold. Derivation of the threshold is not limited to this. Determination unit 258 outputs the threshold value to control unit 250.
- the control unit 250 extracts slot information from the successful bid information.
- the control unit 250 uses the measurement result received at the input unit 264 and the threshold value determined by the determination unit 258 to transmit from the power system 10 to the customer 200. Controls forward power flow.
- the control based on the comparison between the measurement result and the threshold value is the same as in the first embodiment, except that the measurement result is expected to exceed the threshold value, or the measurement result is expected to fall below the threshold value. Control is performed when the This control is performed during the slot indicated in the slot information, that is, while the power is flowing forward from the power system 10 to the customer 200.
- the power consumption of the load device 114 is increased, so that the amount of reverse flowing power can approach the threshold.
- power storage system 118 is charged, so that the amount of power flowing backward can approach the threshold value.
- the load device 114 suppresses power consumption, so that the amount of power flowing backward can approach the threshold value.
- power storage system 118 is discharged, so that the amount of power flowing backward can approach the threshold value.
- the amount of power flowing backward flows approaches the threshold, fluctuations in the amount of power flowing backward can be reduced.
- control since control is performed based on the amount of power flowing backward, control can be simplified.
- the load device 214 suppresses power consumption, so that the amount of power flowing forward can approach the threshold. Further, when the amount of forward flowing power exceeds the threshold value, power storage system 218 is discharged, so that the amount of forward flowing power can approach the threshold value. In addition, when the amount of forward flowing power is lower than the threshold, the power consumption of the load device 214 is increased, so that the amount of forward flowing power can approach the threshold. In addition, when the amount of forward flowing power is lower than the threshold, the power storage system 218 is charged, so that the amount of forward flowing power can approach the threshold. In addition, since the amount of power flowing forward approaches the threshold, fluctuations in the amount of power flowing forward can be reduced. Further, since the threshold value is determined based on the power purchaseable capacity in the customer 200, the threshold value according to the power purchaseable capacity can be set. In addition, since control is performed based on the amount of power flowing forward, control can be simplified.
- the outline of one embodiment of the present disclosure is as follows.
- (Item 1-2) An input unit 164 that receives a measurement result of the amount of power flowing backward from the power generator 100 to the power system 10;
- a control unit 150 that controls the amount of power flowing backward from the power generator 100 to the power system 10 based on the measurement result received at the input unit 164, While the control unit 150 is performing reverse power flow from the power generator 100 to the power system 10,
- An input unit 264 for receiving a measurement result of the amount of power flowing forward from the power system 10 to the customer 200; While power is flowing forward from the power system 10 to the customer 200, (I) When the measurement result received at the input unit 264 can exceed a threshold value larger than zero, the power consumption is suppressed by the load device 214 installed in the customer 200, or the customer 200 To discharge the power storage system 218 installed in (Ii) a control unit 250 that causes the load device 214 to increase power consumption or charge the power storage system 218 when the measurement result received at the input unit 264 can fall below the threshold value; An acquiring unit 256 for acquiring a power purchaseable capacity of the customer 200 in a predetermined time zone, A determining unit 258 that determines the threshold value used in the control unit 250 based on the power purchaseable capacity acquired by the acquiring unit 256; A control system 220 comprising: (Item 2-9)
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
Selon la présente invention, une unité d'entrée 264 reçoit des résultats de mesure d'un flux de puissance inverse. Pendant un flux de puissance inverse, une unité de commande 250 : (i) freine la consommation d'énergie consommée par un dispositif de charge 214 ou décharge un système d'accumulation d'électricité 218 si les résultats de mesure dépassent une valeur seuil ; et (ii) augmente la consommation d'énergie consommée par le dispositif de charge 214 ou décharge le système d'accumulation d'électricité 218 si les résultats de mesure tombent en-deçà de la valeur seuil. Une unité d'acquisition 256 acquiert une capacité qui peut être achetée. Une unité de détermination 258 détermine la valeur seuil sur la base de la capacité qui peut être achetée.
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WO2016157576A1 (fr) * | 2015-03-31 | 2016-10-06 | 日本電気株式会社 | Système de commande de surveillance de dispositif de production d'énergie, dispositif et procédé de commande |
WO2017026508A1 (fr) * | 2015-08-12 | 2017-02-16 | 京セラ株式会社 | Serveur de gestion, et procédé de gestion, et programme de gestion |
WO2018021101A1 (fr) * | 2016-07-27 | 2018-02-01 | 京セラ株式会社 | Dispositif de gestion de puissance, procédé de gestion de puissance, et système de gestion de puissance |
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WO2016157576A1 (fr) * | 2015-03-31 | 2016-10-06 | 日本電気株式会社 | Système de commande de surveillance de dispositif de production d'énergie, dispositif et procédé de commande |
WO2017026508A1 (fr) * | 2015-08-12 | 2017-02-16 | 京セラ株式会社 | Serveur de gestion, et procédé de gestion, et programme de gestion |
WO2018021101A1 (fr) * | 2016-07-27 | 2018-02-01 | 京セラ株式会社 | Dispositif de gestion de puissance, procédé de gestion de puissance, et système de gestion de puissance |
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JP7394388B2 (ja) | 2020-05-26 | 2023-12-08 | パナソニックIpマネジメント株式会社 | 制御方法、プログラム、及び分散電源システム |
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