Power Management System

Abstract

To provide a power management system having a renewable energy power generation facility using a renewable energy (natural energy) such as a photovoltaic power generation and a storage battery.SOLUTION: In a power management system, a discharging from a power storage facility (a storage battery) widely installed entirely in Japan and a charging to the power storage facility (the storage battery) are incorporated for adjustment between a power generation and a power supply by a conventional type power generation facility such as a thermal electric power plant, an atomic power plant, a hydraulic power plant, and a pumped-storage power plant, and a power generation and a power supply by a renewable energy power generation facility such as a photovoltaic power generation, a wind power generation, and a geothermal power generation, and power demands in a load facility using a power in a factory, a company, a store, and a housing or the like, in addition, any economical benefit is given to a user and an owner of the power storage facility (the storage battery) in response to such usage of the power storage facility (the storage battery).SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a power management system including a renewable energy power generation facility that utilizes renewable energy (natural energy) such as solar power generation, and a storage battery. [Background technology]

[0002] 2. Description of the Related Art Various proposals have been made so far regarding power management systems equipped with renewable energy power generation facilities that utilize renewable energy (natural energy) such as solar power generation and storage batteries.

[0003] For example, known energy management systems that support multiple consumers are known as TEMS (Town Energy Management Systems) and CEMS (Community Energy Management Systems). When the load power is small compared to the power generated by a solar power generation facility and surplus power is generated by the solar power generation facility, the surplus power can be used effectively by charging the surplus power into a storage battery. However, when the storage battery cannot be charged, for example, the surplus power cannot flow into the grid power supply and is lost, and the power generated by the solar power generation facility cannot be used effectively.

[0004] Therefore, Patent Document 1 proposes an electricity management system that targets multiple consumer facilities, including consumer facilities equipped with power generation equipment that utilizes renewable energy, and aims to promote effective use of electricity generated by the power generation equipment.

[0005] Furthermore, Patent Document 2 proposes a power supply system that formulates a power transmission plan based on a predicted value of surplus power, which is based on the difference between a predicted value of power generation by renewable energy and a predicted value of power demand, and that includes a control unit that controls the production and storage of hydrogen, the charge amount of the storage battery, and the power generation amount of the fuel cell based on a comparison result between the predicted value of surplus power and the actual value and a comparison result with the charging rate of the storage battery. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 6192531 [Patent Document 2] Patent No. 7134043 Summary of the Invention [Problem to be solved by the invention]

[0007] Today in Japan, conventional power generation facilities such as thermal power plants, nuclear power plants, hydroelectric power plants, and pumped storage power plants operate in parallel with renewable energy power generation facilities such as solar power generation, wind power generation, and geothermal power generation. Electricity supply from these power generation facilities and the electricity demand of load facilities that use electricity in factories, companies, stores, homes, etc. are adjusted in the electricity market, and electricity supply and usage are carried out.

[0008] In renewable energy power generation facilities such as solar power generation facilities and wind power generation facilities, the timing of power generation is often left to natural conditions, and when the amount of electricity generated by the renewable energy power generation facility is greater than the electricity demand, it becomes necessary to take measures such as shutting down the operation of the renewable energy power generation facility or discarding the electricity generated by the renewable energy power generation facility.

[0009] As a result, efforts are being made to set up storage equipment such as storage batteries alongside renewable energy power generation facilities, temporarily store the electricity generated by the renewable energy power generation facilities in the storage equipment, and, when necessary, discharge the electricity from the storage equipment to supply it to the electricity demand of the load equipment.

[0010] Electric vehicles are expected to become more common in Japan in the future. Electric vehicles are equipped with storage facilities (batteries), so as electric vehicles become more common in Japan, storage facilities (batteries) will become more widespread throughout the country.

[0011] As electric vehicles become more widespread, energy storage facilities (batteries) will become widespread throughout Japan. In other words, energy storage facilities (batteries) installed in electric vehicles will be advantageously utilized to adjust the above-mentioned electricity supply and demand in the electricity market.

[0012] Those who use or own electric vehicles are also the users or owners of the energy storage equipment (batteries) installed in electric vehicles, which are in widespread use throughout Japan. Therefore, if some economic benefit were to be given to users and owners of electric vehicles in exchange for utilizing the energy storage equipment (batteries) installed in electric vehicles as described above, it would be beneficial for the spread of electric vehicles.

[0013] Therefore, the present invention aims to propose an electricity management system that incorporates discharging from and charging of energy storage equipment (storage batteries) that are widespread throughout Japan in order to adjust between power generation and supply by conventional power generation equipment such as thermal power plants, nuclear power plants, hydroelectric power plants, pumped storage power plants, etc., and power generation and supply by renewable energy power generation equipment such as solar power generation, wind power generation, geothermal power generation, etc., on the one hand, and power demand at load equipment that uses electricity in factories, companies, stores, homes, etc. on the other hand, and further provides a certain economic benefit to the users / owners of the energy storage equipment (storage batteries) for using the said energy storage equipment (storage batteries) in this way. [Means for solving the problem]

[0014] The power management system proposed by the present invention incorporates discharge from and charging to storage batteries (storage batteries) widely present throughout Japan, such as batteries installed in electric vehicles, in order to adjust between power generation and supply by conventional power generation facilities such as thermal power plants, nuclear power plants, hydroelectric power plants, and pumped storage power plants, and power generation and supply by renewable energy power generation facilities such as solar power generation, wind power generation, and geothermal power generation, and power demand at load facilities that use electricity in factories, companies, stores, homes, and the like, and when there is surplus electricity generated by renewable energy power generation facilities, it is used as the storage battery. This is an electricity management system in which the electricity storage equipment (storage battery) is charged within the charging range of the equipment (storage battery), and when the electricity demand cannot be covered by the electricity generated by the planned power generation by the conventional power generation equipment and the electricity generated by the renewable energy power generation equipment that is generating electricity in parallel, the electricity storage equipment (storage battery) is discharged within the discharging range of the electricity storage equipment (storage battery) to supply the electricity demand, and further, some economic benefit is given to the user / owner of the electricity storage equipment (storage battery) for using the electricity storage equipment (storage battery) as described above.

[0015] In order to provide the user / owner of the energy storage equipment (storage battery) with some economic benefit in return for the storage equipment (storage battery) being utilized as described above, it is possible to adopt a form in which the unit price of the discharge fee paid to the user / owner for the aforementioned discharge from the energy storage equipment (storage battery) is made higher than the unit price of the charging fee charged to the user / owner for the aforementioned charging to the energy storage equipment (storage battery).

[0016] Such an embodiment of the present invention can be exemplified as follows. [1] a power demand forecast calculation means for calculating a unit load equipment power demand forecast, which is a power demand for each predetermined time unit in the future for each of a plurality of load equipments being managed, and for calculating a load equipment total power demand forecast, which is a power demand for each predetermined time unit in the future for the plurality of load equipments as a whole; a conventional power generation facility power generation forecast calculation means for calculating a unit conventional power generation facility power generation forecast, which is the amount of power generation planned for each of a plurality of conventional power generation facilities being managed for each of the predetermined time units in the future at the time when the power demand forecast calculation means calculates the unit load facility power demand forecast and the load facility total power demand forecast, and for calculating a conventional power generation facility total power generation forecast, which is the sum of the amount of power generation planned for each of the predetermined time units in the future for the entire plurality of conventional power generation facilities; a renewable energy power generation amount forecast calculation means for calculating a unit renewable energy power generation amount forecast, which is the amount of power generated by each of a plurality of renewable energy power generation facilities that are managed for each of the predetermined time units in the future at the time when the power demand forecast calculation means calculates the unit load equipment power demand forecast and the load equipment total power demand forecast, and for calculating a renewable energy power generation amount forecast, which is the total amount of power generated by all of the plurality of renewable energy power generation facilities for each of the predetermined time units in the future; a chargeable / dischargeable amount calculation means for calculating a dischargeable amount and a chargeable amount of each of a plurality of power storage facilities under management as a unit chargeable / dischargeable amount prediction for each of the predetermined future time units based on information regarding a dischargeable amount and a chargeable amount of each of a plurality of power storage facilities under management at a time point when the power demand forecast calculation means calculates the unit load equipment power demand forecast and the load equipment total power demand forecast; a charge / discharge amount calculation means for calculating a total discharge amount, which is the total amount of power supplied from the plurality of power storage facilities to the plurality of load facilities, for each of the predetermined time units in the future, based on the load facility total power demand forecast, the conventional power generation facility total power generation forecast, the renewable energy power generation facility total power generation forecast, and the total chargeable / dischargeable amount forecast, or for calculating a total charge amount, which is the total amount of power supplied from the plurality of renewable energy power generation facilities to the plurality of power storage facilities, for each of the predetermined time units in the future, as a total charge amount forecast; A power management system comprising:

[0017] [2] The power management system according to [1] further comprises a charge / discharge fee calculation means for calculating a total discharge fee, which is a total amount of discharge fees to be paid to a plurality of owners of the power storage facilities who own the plurality of power storage facilities, in accordance with the total discharge amount, or for calculating a total charging fee, which is a total amount of charging fees to be charged to the plurality of owners of the power storage facilities, in accordance with the total charge amount.

[0018] [3] The power management system according to [1] or [2], wherein the charge / discharge amount calculation means calculates a unit discharge amount to be discharged from each of the power storage facilities or a unit charge amount to be charged to each of the power storage facilities.

[0019] [4] The charge / discharge fee calculation means further calculates, in accordance with the unit discharge amount, a unit discharge fee which is a discharge fee to be paid to the owner of the power storage equipment for which the unit discharge amount has been calculated, or calculates, in accordance with the unit charge amount, a unit charging fee which is a charging fee to be charged to the owner of the power storage equipment for which the unit charge amount has been calculated. [3] An energy management system.

[0020] [5] An energy management system in which the unit discharge fee, which is the unit price of the unit discharge fee, is set higher than the unit charging fee, which is the unit price of the unit charging fee [4].

[0021] [6] a conventional power generation equipment allowable power reduction prediction calculation means for calculating a unit conventional power generation equipment allowable power reduction prediction, which is an allowable power reduction amount for each of the plurality of conventional power generation equipment for each of the predetermined time units in the future, and for calculating a conventional power generation equipment total allowable power reduction prediction, which is a total of an allowable power reduction amount for each of the plurality of conventional power generation equipment for each of the predetermined time units in the future; a conventional power generation facility allowable power generation increase calculation means for calculating a unit conventional power generation facility allowable power generation increase prediction, which is an allowable power generation increase amount for each of the plurality of conventional power generation facilities for each of the predetermined time units in the future, and for calculating a conventional power generation facility total allowable power generation increase prediction, which is a total of an allowable power generation increase amount for each of the plurality of conventional power generation facilities for each of the predetermined time units in the future; It also has The charge / discharge amount calculation means is a power management system according to any one of [1] to [5], which refers to the conventional power generation equipment total allowable power generation reduction prediction and the conventional power generation equipment total allowable power generation increase prediction when calculating the total discharge amount prediction or the total charge amount prediction. Effect of the Invention

[0022] According to this invention, it is possible to provide an electricity management system that incorporates discharging from and charging of electricity storage equipment (storage batteries) that are widely present throughout Japan in adjusting between power generation and supply by conventional power generation equipment such as thermal power plants, nuclear power plants, hydroelectric power plants, pumped storage power plants, etc., and power generation and supply by renewable energy power generation equipment such as solar power generation, wind power generation, geothermal power generation, etc., on the one hand, and power demand by load equipment that uses electricity in factories, companies, stores, homes, etc. on the other hand, and further provides a power management system that provides some economic benefit to the users / owners of the electricity storage equipment (storage batteries) for using the electricity storage equipment (storage batteries) in this way. [Brief description of the drawings]

[0023] [Figure 1] 1 is a conceptual diagram illustrating a configuration of an embodiment of a power management system according to the present invention. [Diagram 2] 1 is a block diagram illustrating an example of a system configuration of an embodiment of a power management system according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] The power management system of the present invention is composed of a computer system, and in the embodiment whose schematic configuration is shown in Figure 1, it is composed of a management server 1, a plurality of load equipment terminals 3a, 3b, 3c, ..., a plurality of conventional power generation equipment terminals 5a, 5b, 5c, ..., a plurality of renewable energy power generation equipment terminals 7a, 7b, 7c, ..., and a plurality of storage equipment terminals 9a, 9b, 9c, ..., which are connected to each other via a network 10 so that they can exchange information.

[0025] As shown in FIG. 1, multiple load equipment terminals 3a, 3b, 3c, ... are provided in each of multiple load equipment 2a, 2b, 2c, ... that are subject to management by the power management system of this embodiment.

[0026] As shown in FIG. 1, multiple conventional power generation equipment terminals 5a, 5b, 5c, ... are installed in each of multiple conventional power generation equipment 4a, 4b, 4c, ... that are subject to management by the power management system of this embodiment.

[0027] As shown in FIG. 1, multiple renewable energy power generation equipment terminals 7a, 7b, 7c, ... are installed in each of multiple renewable energy power generation equipment 6a, 6b, 6c, ... that are subject to management by the power management system of this embodiment.

[0028] As shown in FIG. 1, a plurality of power storage equipment terminals 9a, 9b, 9c, ... are provided for each of a plurality of power storage equipment 8a, 8b, 8c, ... that are targets of management by the power management system of this embodiment.

[0029] The multiple load facilities 2a, 2b, 2c,... are load facilities that use electric power, for example, in factories, companies, stores, homes, etc. Hereinafter, in this specification and drawings, the load facilities 2a, 2b, 2c,... may be collectively referred to simply as "load facility 2."

[0030] The multiple conventional power generation facilities 4a, 4b, 4c,... are, for example, power generation facilities such as thermal power plants, nuclear power plants, hydroelectric power plants, pumped storage power plants, etc. Hereinafter, in this specification and drawings, the conventional power generation facilities 4a, 4b, 4c,... may be collectively referred to simply as "conventional power generation facilities 4".

[0031] The multiple renewable energy power generation facilities 6a, 6b, 6c,... are, for example, power generation facilities such as solar power generation, wind power generation, geothermal power generation, etc. Hereinafter, in this specification and drawings, the renewable energy power generation facilities 6a, 6b, 6c,... may be collectively referred to simply as "renewable energy power generation facilities 6".

[0032] Although hydroelectric power plants and pumped-storage power plants are sometimes considered to be a form of renewable energy power generation, in this specification they are treated as conventional power generation facilities.

[0033] The multiple power storage facilities 8a, 8b, 8c, etc. are power storage facilities such as storage batteries that can be used in conjunction with the renewable energy power generation facility 6, and power storage facilities such as storage batteries installed in electric vehicles, and are the power storage facilities that are subject to management by the power management system of this embodiment. These power storage facilities are used, as necessary, to temporarily store the power generated by the renewable energy power generation facility 6, or to discharge the power for the purpose of temporarily supplying power to the above-mentioned load, etc. Hereinafter, in this specification and drawings, the power storage facilities 8a, 8b, 8c, etc. may be collectively referred to simply as "power storage facilities 8".

[0034] In the embodiment shown in FIG. 1 , only load facilities 2a, 2b, 2c, conventional power generation facilities 4a, 4b, 4c, renewable energy power generation facilities 6a, 6b, 6c, and power storage facilities 8a, 8b, 8c are shown, but the multiple load facilities 2, the multiple conventional power generation facilities 4, the multiple renewable energy power generation facilities 6, and the multiple power storage facilities 8 are present in a region or area managed by the power management system of the present invention, for example, a managed area such as the Hokkaido area, the Tohoku area consisting of the six Tohoku prefectures of Aomori, Akita, Iwate, Yamagata, Miyagi, and Fukushima, the Eastern Japan area, and the Western Japan area, and include the multiple load facilities 2, the multiple conventional power generation facilities 4, the multiple renewable energy power generation facilities 6, and the multiple power storage facilities 8, whose demand and supply of electricity, charging to the power storage facilities, and discharging from the power storage facilities are managed and adjusted by the power management system of the present invention.

[0035] The load equipment 2 that is the subject of management by the power management system of this embodiment, the conventional power generation equipment 4 that is the subject of management by the power management system of this embodiment, the renewable energy power generation equipment 6 that is the subject of management by the power management system of this embodiment, and the energy storage equipment 8 that is the subject of management by the power management system of this embodiment, as described above, are located in the above-mentioned managed area managed by the power management system of the present invention, and the power demand and supply, charging to the energy storage equipment, and discharging from the energy storage equipment are managed and adjusted by the power management system of the present invention, and in this specification, they may be simply referred to as "load equipment that is being managed", "conventional power generation equipment that is being managed", "renewable energy power generation equipment that is being managed", and "energy storage equipment that is being managed".

[0036] The management server 1 is composed of a computer and, although not shown, includes a CPU which performs control so that the various functions of the system of this embodiment are realized in accordance with an operating system and specific computer programs which have been installed or downloaded, a ROM which stores the operating system and various computer programs and serves as a storage unit for storing data required by the CPU to execute processes for each control, a RAM and a hard disk which store data required by the CPU to execute processes and are also used as a work area where information is rewritten by the CPU as appropriate, and information input / output units such as a communication interface, all of which are connected by the necessary bus lines.

[0037] The management server 1 may be configured as a server built on a cloud, or may be configured as a plurality of server computers in which each of the means described below is distributed.

[0038] The load equipment terminals 3a, 3b, 3c, ..., conventional power generation equipment terminals 5a, 5b, 5c, ..., renewable energy power generation equipment terminals 7a, 7b, 7c, ..., and storage equipment terminals 9a, 9b, 9c, ... are made up of general-purpose devices that are widely used, such as personal computers, smartphones, and tablet terminals, and are connected to the management server 1, which is made up of a computer, so as to be able to exchange information with each other via a wired or wireless network 10 such as the Internet, and perform various processing operations, which will be described later, using a predetermined computer program.

[0039] Hereinafter, in this specification and drawings, the load equipment terminals 3a, 3b, 3c, ..., conventional power generation equipment terminals 5a, 5b, 5c, ..., renewable energy power generation equipment terminals 7a, 7b, 7c, ..., and power storage equipment terminals 9a, 9b, 9c, ... may be collectively referred to simply as "load equipment terminal 3", "conventional power generation equipment terminal 5", "renewable energy power generation equipment terminal 7", and "power storage equipment terminal 9", respectively.

[0040] FIG. 2 is a block diagram illustrating an example of a system configuration of an embodiment of a power management system according to the present invention.

[0041] The management server 1 is equipped with a power demand forecast calculation means 100, a conventional power generation equipment power generation forecast calculation means 101, a renewable energy power generation forecast calculation means 102, a chargeable / dischargeable amount calculation means 103, a charge / discharge amount calculation means 104, a charge / discharge fee calculation means 105, a conventional power generation equipment allowable power generation reduction forecast calculation means 106, and a conventional power generation equipment allowable power generation increase calculation means 107, which each execute the processing operations described below under a predetermined computer program.

[0042] In the illustrated embodiment, the database 200 of the management server 1 includes a load equipment power demand actual history database 201, a conventional power generation equipment power generation actual history database 202, a renewable energy power generation equipment power generation actual history database 203, a climate and environmental condition actual history database 204, an event actual history database 205, a charging equipment database 206, a charge and discharge actual history database 207, a fee table database 208, a power transmission and distribution network database 209, a power generation equipment operation plan database 210, an event plan database 211, a load equipment total power demand forecast database 212, a conventional power generation equipment power generation amount forecast database 213, a renewable energy power generation equipment power generation amount forecast database 214, a charge and discharge possible amount forecast database 215, a charge and discharge amount forecast database 216, a charge and discharge fee database 217, a conventional power generation equipment allowable power generation reduction amount forecast database 218, and a conventional power generation equipment allowable power generation increase amount forecast database 219. Hereinafter, in the present specification and drawings, the database may be simply referred to as "DB".

[0043] The load equipment power demand actual result DB201 accumulates and stores information on the load equipment power demand actual result history, which is referred to when the power demand forecast calculation means 100 described later performs the unit load equipment power demand forecast calculation process and the load equipment total power demand forecast calculation process. That is, the power demand actual result for each of the multiple load equipment 2 that is the subject of management by the power management system of this embodiment in a predetermined time unit in the past (for example, 1:00 pm to 2:00 pm on Monday, November 1, 2021) is stored as history information. The power demand actual result for each of the multiple load equipment 2 in a predetermined time unit in the past is accumulated and stored in the load equipment power demand actual result history DB201, for example, by the management server 1 acquiring information on the power demand actual result from each load equipment terminal 3 via the network 10 for each of the predetermined time units.

[0044] The conventional power generation equipment power generation performance history DB202 accumulates and stores information on the conventional power generation equipment power generation performance history, which is referred to when the conventional power generation equipment power generation amount forecast calculation means 101 described later performs the unit conventional power generation equipment power generation amount forecast calculation process and the conventional power generation equipment total power generation forecast calculation process. That is, the power generation performance in a predetermined time unit in the past (for example, 1:00 pm to 2:00 pm on Monday, November 1, 2021) in each of the multiple conventional power generation equipment 4 that are the subject of management by the power management system of this embodiment is stored as history information. The power generation performance in a predetermined time unit in the past in each of the multiple conventional power generation equipment 4 is accumulated and stored in the conventional power generation equipment power generation performance history DB202, for example, by the management server 1 acquiring information on the power generation performance from each conventional power generation equipment terminal 5 for each predetermined time unit via the network 10.

[0045] The renewable energy power generation equipment power generation performance history DB203 accumulates and stores information on the renewable energy power generation equipment power generation performance history, which is referred to when the renewable energy power generation amount forecast calculation means 102 described later performs the unit renewable energy power generation equipment power generation amount forecast calculation process and the renewable energy power generation equipment total power generation amount forecast calculation process. That is, the power generation performance in a predetermined time unit in the past (for example, 1:00 pm to 2:00 pm on Monday, November 1, 2021) in each of the multiple renewable energy power generation equipment 6 that are the subject of management by the power management system of this embodiment is stored as history information. The power generation performance in a predetermined time unit in the past in each of the multiple renewable energy power generation equipment 6 is accumulated and stored in the renewable energy power generation equipment power generation performance history DB203, for example, by the management server 1 acquiring information on the power generation performance from each renewable energy power generation equipment terminal 7 for each predetermined time unit via the network 10, etc.

[0046] The climate and environmental condition performance history DB 204 accumulates and stores climate and environmental condition data to be referred to when the conventional power generation equipment power generation amount forecast calculation means 101 described later performs unit conventional power generation equipment power generation amount forecast calculation processing and conventional power generation equipment total power generation forecast calculation processing, and when the renewable energy power generation amount forecast calculation means 102 described later performs unit renewable energy power generation equipment power generation amount forecast calculation processing and renewable energy power generation equipment total power generation amount forecast calculation processing. For example, past climate and environmental condition performance history information and future climate and environmental condition forecast in the area where each of the multiple load equipment 2 that is the object of management by the power management system of this embodiment is located, which affects the power demand of the multiple load equipment 2, and past climate and environmental condition performance history information and future climate and environmental condition forecast in the area where each of the multiple renewable energy power generation equipment 6 that affects the power generation amount by the multiple renewable energy power generation equipment 6 that is the object of management by the power management system of this embodiment is located are stored.

[0047] The data on these climate and environmental conditions stored in the climate and environmental condition performance history DB 204 is acquired by the management server 1 from commercial websites that provide such data, and is then accumulated and stored in the climate and environmental condition performance history DB 204.

[0048] The event performance history DB205 accumulates and stores information on the event performance history, which is referred to when the power demand forecast calculation means 100 described later performs unit load equipment power demand forecast calculation processing and load equipment total power demand forecast calculation processing. That is, the event performance history DB205 stores information on the event (e.g., holidays, festivals, concerts, etc.) held in the area where the multiple load equipment 2 that are the targets of management by the power management system of this embodiment are located, and the power demand performance of the corresponding load equipment 2 at the time of the event. Such information stored in the event performance history DB205 is created by a predetermined processing operation unit of the management server 1 with reference to the event performance history information of various events acquired by the management server 1 and the above-mentioned information accumulated and stored in the load equipment power demand performance history DB201, and is stored in the event performance history DB205.

[0049] The charging facility DB 206 stores data on a plurality of power storage facilities 8 that are targets of management by the power management system of this embodiment. The data on the power storage facilities 8 include information on the location where the power storage facilities 8 are installed, information on the location where the power storage facilities 8 are charged to and discharged from when the power storage facilities 8 are batteries installed in electric vehicles, information on the owner of the power storage facilities 8 (for example, information on the payee of the discharge fee paid by the manager / operator of the power management system of this embodiment according to the amount of discharge when the power storage facilities 8 are discharged or charged under the management of the power management system of this embodiment, and information on the owner of the power storage facilities 8 who is the payee of the charge fee charged by the manager / operator of the power management system of this embodiment according to the amount of charge), information on the dischargeable amount and the chargeable amount of each power storage facility 8, and the like.

[0050] Information regarding the location where the power storage equipment 8 is installed, information regarding the location where the storage battery is charged and discharged if the power storage equipment 8 is a storage battery installed in an electric vehicle, information regarding the owner of the power storage equipment 8, etc. are acquired by the management server 1 when each power storage equipment 8 is registered as a target for management by the power management system of this embodiment, and are stored and accumulated in the charging equipment DB206.

[0051] Information relating to the dischargeable amount and chargeable amount in each power storage facility 8 is accumulated and stored in the charging facility DB 206 by the management server 1 acquiring this information from each power storage facility terminal 9 via the network 10, etc. This information acquisition, accumulation and storage can be in a form in which each power storage facility terminal 9 transmits the information to the management server 1 via the network 10 at time intervals such as one hour, corresponding to the above-mentioned predetermined time unit.

[0052] The information on the dischargeable amount and chargeable amount in each power storage facility 8 is referred to when the chargeable / dischargeable amount calculation means 103 performs a unit chargeable / dischargeable amount forecast calculation process and a total chargeable / dischargeable amount forecast calculation process, which will be described later.

[0053] The charge / discharge performance history DB207 accumulates and stores information on the amount of discharge when each of the power storage facilities 8 is discharged under the management of the power management system of this embodiment, and information on the amount of charge when each of the power storage facilities 8 is charged under the management of the power management system of this embodiment, for each of the multiple power storage facilities 8 that are targets of management by the power management system of this embodiment. These pieces of information are referred to in a unit chargeable / dischargeable amount forecast calculation process and a total chargeable / dischargeable amount forecast calculation process performed by the chargeable / dischargeable amount calculation means 103, which will be described later. In addition, these pieces of information are accumulated and stored in the charge / discharge performance history DB207 by the management server 1 acquiring these pieces of information from each power storage facility terminal 9 via the network 10, etc.

[0054] The fee table DB208 stores information regarding the unit price of a discharge fee required to calculate a total discharge fee, which is the total amount of discharge fees to be paid to owners of multiple energy storage facilities 8 who own multiple energy storage facilities 8 according to a total discharge amount, which is the total amount of power supplied from the multiple energy storage facilities 8 to the multiple load facilities 2 for each predetermined time unit in the future, and the unit price of a charging fee required to calculate a total charging fee, which is the total amount of charging fees to be charged to owners of multiple energy storage facilities 8 according to a total charging amount, which is the total amount of power supplied from the multiple renewable energy power generation facilities 4 to the multiple energy storage facilities 8, and the like. These pieces of information are referred to during the calculation process performed by the charging / discharging fee calculation means 105 described later.

[0055] The power transmission and distribution line network DB209 accumulates and stores information about the power transmission and distribution line network deployed for transmitting electricity between the load equipment 2, the conventional power generation equipment 4, the renewable energy power generation equipment 6, and the power storage equipment 8. For example, information about the distance between the load equipment 2 and the conventional power generation equipment 4, the renewable energy power generation equipment 6, and the power storage equipment 8, information about the transmission loss when transmitting electricity through each transmission line, and the like are accumulated and stored.

[0056] The power generation equipment operation plan DB210 accumulates and stores information on operation plans for each conventional power generation equipment 4 and each renewable energy power generation equipment 6, i.e., power generation plans planned for the future. The management server 1 acquires this information from each conventional power generation equipment terminal 5 and each renewable energy power generation equipment terminal 7 via the network 10, etc., and the information is accumulated and stored in the power generation equipment operation plan database 210.

[0057] If any changes occur in the operation plans of each conventional power generation equipment 4 and each renewable energy power generation equipment 6, the management server 1 obtains the information from each conventional power generation equipment terminal 5 and each renewable energy power generation equipment terminal 7 via the network 10, etc., and updates the power generation equipment operation plan DB210.

[0058] The event plan DB 211 accumulates and stores information about scheduled events that are expected to have the possibility of causing fluctuations in the power demand in the area where the load equipment 2 is located.

[0059] The load equipment total power demand forecast DB 212 accumulates and stores the load equipment total power demand forecast calculated by the power demand forecast calculation means 100 described later.

[0060] The conventional power generation facility power generation prediction DB 213 accumulates and stores unit conventional power generation facility power generation predictions and conventional power generation facility total power generation predictions calculated by a conventional power generation facility power generation prediction calculation means 101 described later.

[0061] The renewable energy power generation facility power generation amount prediction DB 214 accumulates and stores the unit renewable energy power generation facility power generation amount prediction and the renewable energy power generation facility total power generation amount prediction calculated by the renewable energy power generation amount prediction calculation means 102 described later.

[0062] The chargeable / dischargeable amount prediction DB 215 accumulates and stores unit chargeable / dischargeable amount predictions and total chargeable / dischargeable amount predictions calculated by the chargeable / dischargeable amount calculation means 103, which will be described later.

[0063] The charge / discharge amount prediction DB 216 accumulates and stores a total discharge amount prediction or a total charge amount prediction calculated by the charge / discharge amount calculation means 104 described later. Also, the charge / discharge amount prediction DB 216 accumulates and stores a unit discharge amount or a unit charge amount calculated by the charge / discharge amount calculation means 104 described later.

[0064] The charge / discharge fee DB 217 accumulates and stores a total discharge fee or a total charging fee calculated by the charge / discharge fee calculation means 105, which will be described later. In addition, the charge / discharge fee DB 217 accumulates and stores a unit discharge fee or a unit charging fee calculated by the charge / discharge fee calculation means 105, which will be described later.

[0065] The conventional power generation equipment allowable power reduction prediction DB218 accumulates and stores the unit conventional power generation equipment allowable power reduction prediction and the conventional power generation equipment total allowable power reduction prediction calculated by the conventional power generation equipment allowable power reduction prediction calculation means 107 described later.

[0066] The conventional power generation equipment allowable power generation increase prediction DB219 accumulates and stores the unit conventional power generation equipment allowable power generation increase prediction and the conventional power generation equipment total allowable power generation increase prediction calculated by the conventional power generation equipment allowable power generation increase calculation means 108 described later.

[0067] The power demand forecast calculation means 100 calculates a unit load equipment power demand forecast, which is the power demand for each future predetermined time unit (for example, 1:00 PM to 2:00 PM on December 1, 2022) in each of the multiple load equipment 2 to be managed, and performs a process of calculating a load equipment total power demand forecast, which is the power demand for each future predetermined time unit (i.e., 1:00 PM to 2:00 PM on December 1, 2022) for the entire multiple load equipment 2. The calculated load equipment total power demand forecast is associated with time information (for example, in the above case, 1:00 PM on November 30, 2022, which is the day before the future predetermined time unit (for example, 1:00 PM on December 1, 2022 to 2:00 PM)) when the power demand forecast calculation means 100 calculated the unit load equipment power demand forecast and the load equipment total power demand forecast, and is accumulated and stored in the load equipment total power demand forecast DB 212.

[0068] The conventional power generation equipment power generation forecast calculation means 101 calculates a unit conventional power generation equipment power generation forecast, which is the planned power generation of each of the multiple conventional power generation equipment 4 under management, for each of the specified future time units (i.e., 1:00 PM to 2:00 PM on December 1, 2022) at the time when the power demand forecast calculation means 100 calculates the unit load equipment power demand forecast and the load equipment total power demand forecast (in the above case, 1:00 PM on November 30, 2022), and performs a process of calculating a conventional power generation equipment total power generation forecast, which is the sum of the planned power generation of the multiple conventional power generation equipment 4 as a whole for each of the specified future time units (i.e., 1:00 PM to 2:00 PM on December 1, 2022). The calculated unit conventional power generation equipment power generation forecast and conventional power generation equipment total power generation forecast are associated with the time information (i.e., 1:00 p.m. on November 30, 2022) at which the power demand forecast calculation means 100 calculated the unit load equipment power demand forecast and the load equipment total power demand forecast, and are accumulated and stored in the conventional power generation equipment power generation forecast DB213.

[0069] The renewable energy power generation forecast calculation means 102 calculates a unit renewable energy power generation equipment power generation forecast, which is the amount of power generated by each of the multiple renewable energy power generation equipment 6 under management for each of the specified time units in the future (i.e., 1:00 PM to 2:00 PM on December 1, 2022) at the time when the power demand forecast calculation means 100 calculates the unit load equipment power demand forecast and the load equipment total power demand forecast (in the above case, 1:00 PM on November 30, 2022), and performs a process of calculating a total renewable energy power generation equipment power generation forecast, which is the sum of the amount of power generated by the multiple renewable energy power generation equipment 6 as a whole for each of the specified time units in the future (i.e., 1:00 PM to 2:00 PM on December 1, 2022). The calculated unit renewable energy power generation equipment power generation forecast and the renewable energy power generation equipment total power generation forecast are associated with the time information (i.e., 1:00 p.m. on November 30, 2022) at which the power demand forecast calculation means 100 calculated the unit load equipment power demand forecast and the load equipment total power demand forecast, and are accumulated and stored in the renewable energy power generation equipment power generation forecast DB214.

[0070] The chargeable / dischargeable capacity calculation means 103 calculates the dischargeable capacity and chargeable capacity of each of the multiple storage facilities 8 under management as a unit chargeable / dischargeable capacity prediction for each of the specified future time units (i.e., 1:00 pm to 2:00 pm on December 1, 2022) based on information regarding the dischargeable capacity and chargeable capacity of each of the multiple storage facilities 8 under management at the time when the power demand forecast calculation means 100 calculates the unit load equipment power demand forecast and the load equipment total power demand forecast (in the above case, 1:00 pm on November 30, 2022), and performs a process of calculating the dischargeable capacity and chargeable capacity of the multiple storage facilities 8 as a total chargeable / dischargeable capacity prediction. The calculated unit chargeable / dischargeable capacity forecast and total chargeable / dischargeable capacity forecast are associated with the time information (i.e., 1:00 p.m. on November 30, 2022) at which the power demand forecast calculation means 100 calculated the unit load equipment power demand forecast and the load equipment total power demand forecast, and are accumulated and stored in the chargeable / dischargeable capacity forecast DB215.

[0071] The charge / discharge amount calculation means 104 performs a process of calculating a total discharge amount, which is the total amount of power supplied from the plurality of power storage facilities 8 to the plurality of load facilities 2, as a total discharge amount prediction, for each of the predetermined time units in the future (i.e., 1:00 PM to 2:00 PM on December 1, 2022) based on the load facility total power demand prediction, the conventional power generation facility total power generation prediction, the renewable energy power generation facility total power generation prediction, and the total chargeable / dischargeable amount prediction, or calculating a total charge amount, which is the total amount of power supplied from the plurality of renewable energy power generation facilities 6 to the plurality of power storage facilities 8, as a total charge amount prediction. The calculated total discharge amount prediction or total charge amount prediction is associated with the time information (i.e., 1:00 PM on November 30, 2022) at which the power demand prediction calculation means 100 calculated the unit load facility power demand prediction and the load facility total power demand prediction, and is accumulated and stored in the charge / discharge amount prediction DB 216.

[0072] The charge / discharge fee calculation means 105 performs a process of calculating a total discharge fee which is the total amount of discharge fees to be paid to a plurality of owners of power storage facilities 8 who own the plurality of power storage facilities 8 according to the total discharge amount, or calculating a total charging fee which is the total amount of charging fees to be charged to the plurality of owners of power storage facilities according to the total charging amount. The calculated total discharge fee or the calculated total charging fee is accumulated and stored in the charge / discharge fee DB217 in association with time information at which the power demand forecast calculation means 100 calculated the unit load equipment power demand forecast and the load equipment total power demand forecast.

[0073] The charge / discharge amount calculation means 104 further performs a process of calculating a unit discharge amount to be discharged from each of the power storage facilities 8 or a unit charge amount to be charged to each of the power storage facilities 8. The calculated unit discharge amount or the calculated unit charge amount is accumulated and stored in the charge / discharge amount prediction DB 216 in association with time information at which the power demand prediction calculation means 100 calculated the unit load equipment power demand prediction and the load equipment total power demand prediction.

[0074] The charge / discharge fee calculation means 105 further performs a process of calculating a unit discharge fee, which is a discharge fee to be paid to the owner of the energy storage equipment 8 for which the unit discharge amount has been calculated, according to the unit discharge amount, or calculating a unit charging fee, which is a charging fee to be paid to the owner of the energy storage equipment 8 for which the unit charging amount has been calculated, according to the unit charging amount.

[0075] The calculated unit discharge fee or the calculated unit charging fee is accumulated and stored in the charging / discharging fee DB217 in association with the time information when the power demand forecast calculation means 100 calculated the unit load equipment power demand forecast and the load equipment total power demand forecast.

[0076] A configuration may be adopted in which the unit discharge fee unit price, which is the unit price of the unit discharge fee, is set higher than the unit charge fee unit price, which is the unit price of the unit charging fee.

[0077] In this embodiment, the demand and supply of electricity is adjusted by charging the storage equipment and discharging the storage equipment among a plurality of load equipment 2, a plurality of conventional power generation equipment 4, a plurality of renewable energy power generation equipment 6, and a plurality of storage equipment 8 that exist in managed areas and regions and areas managed by the power management system of the present invention, such as the Hokkaido area, the Tohoku area consisting of the six Tohoku prefectures of Aomori, Akita, Iwate, Yamagata, Miyagi, and Fukushima, the Eastern Japan area, and the Western Japan area.

[0078] The electricity demand from the multiple load facilities 2, the power generation by the multiple conventional power generation facilities 4, and the power generation by the multiple renewable energy power generation facilities 6 will be very large-scale, and the power storage facility 8 will also be very large-scale because it uses batteries installed in electric vehicles as power storage facilities.

[0079] Therefore, for example, the total electricity demand in the managed area 24 hours in advance, the total amount of electricity generated in the managed area, and the total amount of electricity that can be discharged and charged from the energy storage equipment present in the managed area are calculated and predicted by referring to the information stored in the various DBs mentioned above, and when there is surplus electricity generated by the renewable energy power generation equipment 6, this is charged into the energy storage equipment 8 within the chargeable range of the energy storage equipment 8. On the other hand, when the electricity demand cannot be covered by the electricity generated as planned by the conventional power generation equipment 4 and the electricity generated by the renewable energy power generation equipment 6 that is generating electricity in parallel, it is possible to discharge electricity from the energy storage equipment 8 within the dischargeable range of the energy storage equipment 8 to supply the electricity demand.

[0080] At this time, some economic benefit is given to the user / owner of the power storage facility 8 for utilizing the power storage facility 8 as described above.

[0081] In order to provide some economic benefit to the user / owner of the power storage equipment 8 for the aforementioned utilization of the power storage equipment 8, a unit price of the discharge fee paid to the user / owner for the aforementioned discharge from the power storage equipment 8 is made higher than the unit price of the charging fee charged to the user / owner for the aforementioned charging to the power storage equipment 8.

[0082] For example, by setting the unit price of charging at 30 yen per kWh and the unit price of discharging at 50 yen per kWh, users and owners of the energy storage equipment 8 can expect to gain economic benefits by incorporating the energy storage equipment 8 they use and own into the power management system of the present invention.

[0083] The conventional power generation equipment allowable power generation reduction prediction calculation means 107 calculates a unit conventional power generation equipment allowable power generation reduction prediction, which is the amount of power generation reduction that can be tolerated by each of the multiple conventional power generation equipment 4 for each of the specified time units in the future, and also performs processing to calculate a conventional power generation equipment total allowable power generation reduction prediction, which is the sum of the power generation reduction amounts that can be tolerated for each of the specified time units in the future for the multiple conventional power generation equipment 4 as a whole.

[0084] The calculated unit conventional power generation equipment allowable power reduction prediction and the calculated conventional power generation equipment total allowable power reduction prediction are accumulated and stored in the conventional power generation equipment allowable power reduction prediction DB218 in association with the time information at which the power demand prediction calculation means 100 calculated the unit load equipment power demand prediction and the load equipment total power demand prediction.

[0085] The conventional power generation equipment allowable power generation increase calculation means 108 calculates a unit conventional power generation equipment allowable power generation increase prediction, which is the power generation increase allowable for each of the multiple conventional power generation equipment 4 for each of the specified time units in the future, and also performs processing to calculate a conventional power generation equipment total allowable power generation increase prediction, which is the total of the power generation increase allowable for each of the specified time units in the future for the multiple conventional power generation equipment 4 as a whole.

[0086] The calculated unit conventional power generation equipment allowable power increase forecast and the calculated conventional power generation equipment total allowable power increase forecast are accumulated and stored in the conventional power generation equipment allowable power increase forecast DB219 in association with the time information at which the power demand forecast calculation means 100 calculated the unit load equipment power demand forecast and the load equipment total power demand forecast.

[0087] The above-mentioned charge / discharge amount calculation means 104 can be configured to refer to the conventional power generation equipment total allowable power generation reduction prediction and the conventional power generation equipment total allowable power generation increase prediction when calculating the above-mentioned total discharge amount prediction or total charge amount prediction.

[0088] Although the embodiment of the present invention has been described above, the present invention is not limited to the above-mentioned embodiment, and various modifications can be made within the technical scope grasped from the description of the claims.

Claims

1. a power demand forecast calculation means for calculating a unit load equipment power demand forecast, which is a power demand for each predetermined time unit in the future for each of a plurality of load equipments being managed, and for calculating a load equipment total power demand forecast, which is a power demand for each predetermined time unit in the future for the plurality of load equipments as a whole; a conventional power generation facility power generation forecast calculation means for calculating a unit conventional power generation facility power generation forecast, which is the amount of power generation planned for each of a plurality of conventional power generation facilities being managed for each of the predetermined time units in the future at the time when the power demand forecast calculation means calculates the unit load facility power demand forecast and the load facility total power demand forecast, and for calculating a conventional power generation facility total power generation forecast, which is the sum of the amount of power generation planned for each of the predetermined time units in the future for the entire plurality of conventional power generation facilities; a renewable energy power generation forecast calculation means for calculating a unit renewable energy power generation facility power generation forecast, which is the amount of power generated by each of a plurality of renewable energy power generation facilities that are managed for each of the predetermined time units in the future at the time when the power demand forecast calculation means calculates the unit load facility power demand forecast and the load facility total power demand forecast, and for calculating a renewable energy power generation facility total power generation forecast, which is the total amount of power generated by all of the plurality of renewable energy power generation facilities for each of the predetermined time units in the future; a chargeable / dischargeable amount calculation means for calculating a dischargeable amount and a chargeable amount of each of a plurality of power storage facilities under management as a unit chargeable / dischargeable amount prediction for each of the predetermined future time units based on information regarding a dischargeable amount and a chargeable amount of each of a plurality of power storage facilities under management at a time point when the power demand forecast calculation means calculates the unit load equipment power demand forecast and the load equipment total power demand forecast; a charge / discharge amount calculation means for calculating a total discharge amount, which is the total amount of power supplied from the plurality of power storage facilities to the plurality of load facilities, for each of the predetermined time units in the future, based on the load facility total power demand forecast, the conventional power generation facility total power generation forecast, the renewable energy power generation facility total power generation forecast, and the total chargeable / dischargeable amount forecast, or for calculating a total charge amount, which is the total amount of power supplied from the plurality of renewable energy power generation facilities to the plurality of power storage facilities, for each of the predetermined time units in the future, as a total charge amount forecast; A power management system comprising:

2. The system further includes a charge / discharge fee calculation means for calculating a total discharge fee, which is a total amount of discharge fees to be paid to owners of the plurality of power storage facilities who own the plurality of power storage facilities, according to the total discharge amount, or for calculating a total charging fee, which is a total amount of charging fees to be charged to the owners of the plurality of power storage facilities, according to the total charge amount. The power management system of claim 1 .

3. The power management system according to claim 2 , wherein the charge / discharge amount calculation means further calculates a unit discharge amount to be discharged from each of the power storage facilities or a unit charge amount to be charged to each of the power storage facilities.

4. The charge / discharge fee calculation means further calculates, in accordance with the unit discharge amount, a unit discharge fee which is a discharge fee to be paid to the owner of the power storage equipment who owns the power storage equipment for which the unit discharge amount has been calculated, or calculates, in accordance with the unit charge amount, a unit charging fee which is a charging fee to be charged to the owner of the power storage equipment who owns the power storage equipment for which the unit charge amount has been calculated. The power management system according to claim 3.

5. 5. The power management system according to claim 4, wherein the unit discharge fee unit price, which is the unit price of the unit discharge fee, is set higher than the unit charge fee unit price, which is the unit price of the unit charging fee.

6. a conventional power generation equipment allowable power reduction prediction calculation means for calculating a unit conventional power generation equipment allowable power reduction prediction, which is an allowable power reduction amount for each of the plurality of conventional power generation equipment for each of the predetermined time units in the future, and for calculating a conventional power generation equipment total allowable power reduction prediction, which is a total of an allowable power reduction amount for each of the plurality of conventional power generation equipment for each of the predetermined time units in the future; a conventional power generation facility allowable power generation increase calculation means for calculating a unit conventional power generation facility allowable power generation increase prediction, which is an allowable power generation increase amount for each of the plurality of conventional power generation facilities for each of the predetermined time units in the future, and for calculating a conventional power generation facility total allowable power generation increase prediction, which is a total of an allowable power generation increase amount for each of the plurality of conventional power generation facilities for each of the predetermined time units in the future; It also has The charge / discharge amount calculation means refers to the conventional power generation equipment total allowable power generation reduction forecast and the conventional power generation equipment total allowable power generation increase forecast when calculating the total discharge amount forecast or the total charge amount forecast. The power management system of claim 1 .

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