Electricity supply and demand management device, electricity supply and demand management system, and electricity supply and demand management method

Abstract

To provide a power demand management device, a power demand management system, and a power demand management method efficiently and surely executing a demand responce (DR).SOLUTION: A power demand management device requesting and executing DR to a plurality of user sites receiving power supply through a power transmission line, has: a database for managing power usage information regarding a history of a past power usage amount of a plurality of user sites; a user site extracting unit for extracting at least one or more user sites based on the power usage information per user site referring to the database, according to a command regarding the DR; a DR request unit for transmitting a DR request notice to an information communication terminal device related to the extracted user site for a DR request; and a current amount upper limit value changing unit for controlling to change a current amount upper limit value in a permitted user site with respect to the DR request according to a permission / non-permission notice transmitted from the information communication terminal device in response to the DR request notice.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a power supply and demand management device, a power supply and demand management system, and a power supply and demand management method. [Background technology]

[0002] Electricity (i.e., electricity) generated at each power plant (centralized power source) is sent to the consumer area via transmission lines via several large and small substations, and finally to each consumer such as an ordinary home via distribution lines from a transformer. In general, a system that integrates power generation, transformation, transmission, and distribution is called a power grid. Since electricity in such a power grid cannot be stored, there is always a balance between the demand and supply. of If this balance between supply and demand is lost, the quality of electricity, such as voltage and frequency, will decline, and in some cases, large-scale power outages may occur.

[0003] In order to maintain the balance between supply and demand of electricity, electric power companies have traditionally adjusted the operation status of power generation facilities based on the idea of ​​matching the supply of electricity to the demand. However, in this case, the electric power company needs to prepare surplus power generation facilities, which increases the management and operation costs, resulting in a sharp rise in electricity prices.

[0004] In addition, while the introduction of renewable energy sources such as solar power generation and wind power generation has progressed in recent years, the amount of power generated by these sources is subject to change depending on natural conditions such as the weather, making it impossible to control the amount of supply. In parallel with this trend, distributed energy resources introduced on the consumer side, such as photovoltaic power generation, cogeneration systems such as household fuel cells, storage batteries, electric vehicles, and so-called negawatts, are becoming more widespread.

[0005] In light of this, the conventional energy supply system that relies on large-scale power plants centered around electric power companies is being reconsidered, and in line with this, efforts are being made to develop schemes that utilize energy resources on the consumer side in the power system. Specifically, a scheme has been proposed in which a management system called an aggregator uses the Internet of Things (IoT) to remotely and comprehensively control distributed energy resources owned by facilities such as factories and homes, thereby adjusting the balance of power supply and demand. This type of scheme is called a Virtual Power Plant (VPP) because it functions as if it were a single power plant.

[0006] Furthermore, in recent years, the idea of ​​matching the demand for electricity with the supply has been adopted, and operations are being carried out to maintain the balance between demand and supply through demand response (DR). In other words, demand response refers to changing the electricity demand pattern so that consumers curb their use (consumption) of electricity in response to the setting of electricity rates or the payment of incentives when market prices rise or the reliability of the power grid declines.

[0007] Such virtual power plants and demand response are expected to be solutions to problems such as leveling the power load in power grids, absorbing excess supply of renewable energy, and supplying electricity during power shortages. Several systems have been proposed for demand response.

[0008] For example, Patent Document 1 listed below discloses a demand response system that can easily request consumers to perform demand response, calculate appropriate compensation for consumers who perform demand response, and adjust the amount of power adjusted by consumers to a planned amount.

[0009] Furthermore, the following Patent Document 2 discloses a device for easily grasping the increase or decrease in the amount of power demand when a demand response is requested. Specifically, Patent Document 2 discloses a power information creation device including a baseline screen creation unit that creates screen display information for displaying a baseline screen that shows, in correspondence with time, the fluctuation in the amount of power demand expected in a predetermined time period when there is no demand response request, and that shows, in correspondence with time, the fluctuation in the amount of power demand in response to the demand response request, in correspondence with time, during the time period when the demand response is requested.

[0010] Furthermore, the following Patent Document 3 discloses a device that enables appropriate processing of controlled devices of consumers. Specifically, Patent Document 3 discloses an information processing device that includes an acquisition unit that acquires predetermined information used to determine processing of controlled devices of multiple consumers, a determination unit that determines service content corresponding to the controlled devices of the consumers based on the predetermined information acquired by the acquisition unit, and an execution unit that executes processing of the controlled devices of the consumers based on the service content determined by the determination unit. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] JP 2018-170925 A [Patent Document 2] JP 2019-170101 A [Patent Document 3] JP 2020-054053 A Summary of the Invention [Problem to be solved by the invention]

[0012] In order to effectively realize demand response, it is important to identify consumers who can reliably respond to a demand response request from the power supply side and obtain consent from the consumers. Previously, when an imbalance in the supply and demand balance was predicted in the power system, for example, a person in charge at a power company would call so-called large consumers with large contracted power amounts and request them to reduce their power usage and obtain their consent, and the large consumers would reduce their power usage by, for example, stopping the operation of electrical appliances in accordance with the request. However, none of the above Patent Documents 1 to 3 takes into consideration the problem of which consumers in a specific consumption area to request a demand response from and how quickly they can obtain consent.

[0013] Therefore, an object of the present invention is to provide an electricity supply and demand management device, an electricity supply and demand management system, and an electricity supply and demand management method that can effectively extract consumers who can respond to a demand response request from a specific electricity consumption area, and quickly obtain consent or denial from those consumers. [Means for solving the problem]

[0014] The present invention, which aims to solve the above problems, includes the following invention-specific matters and technical features.

[0015] The present invention according to one aspect may be an electric power supply and demand management device that requests and executes a demand response to a plurality of consumer sites that receive a supply of electric power via a power transmission line. The electric power supply and demand management device may include: a database that manages electric power usage information related to a history of past electric power usage at each of the plurality of consumer sites; a consumer site extraction unit that refers to the database in accordance with an instruction related to a demand response and extracts at least one of the consumer sites based on the electric power usage information at each of the plurality of consumer sites; a demand response request unit that transmits a demand response request notice to an information communication terminal device associated with the at least one or more extracted consumer sites in order to request the demand response; and a current upper limit value change unit that performs control to change a current upper limit value at the consumer site that has granted the request for the demand response in accordance with an approval notice transmitted from the information communication terminal device in response to the demand response request notice. Electricity supply and demand management device.

[0016] The customer site extraction unit may extract the customer site based on the amount of power usage at the customer site in a particular time period in the past.

[0017] The customer site extraction unit may also extract the customer sites whose power consumption is equal to or greater than a predetermined threshold value.

[0018] The customer site extraction unit may also extract a predetermined number of the customer sites based on the total amount of power reduction requested indicated by the command.

[0019] The power supply and demand management device may further include a requested power reduction amount determining unit that determines a requested power reduction amount for the customer site in accordance with the contracted amperes of the extracted customer site.

[0020] The power supply and demand management device may further include a demand response permission counting unit that calculates an expected amount of power reduction based on the requested amount of power reduction of the authorized consumer site.

[0021] The demand response permission counting unit may compare the calculated estimated amount of reduced power with the total amount of reduced power requested, and determine whether the estimated amount of reduced power reaches the total amount of reduced power requested. Then, when the demand response permission counting unit determines that the estimated amount of reduced power does not reach the total amount of reduced power requested, the consumer site extraction unit may refer to the database and further extract other consumer sites.

[0022] In addition, when the demand response permission aggregation unit determines that the expected reduction amount of power has reached the total reduction requested amount of power, it may create a demand response implementation list that includes a demand response current amount upper limit value for executing demand response to the authorized consumer site.

[0023] Furthermore, the demand response permission counting unit may transmit a notification that acceptance of the demand response request has ended to the consumer site that has not yet transmitted the permission permission notification.

[0024] The current amount upper limit value change unit may transmit a first current amount upper limit value change command, which specifies the demand response current amount upper limit value, to the consumer site in accordance with the demand response implementation list.

[0025] In addition, the current upper limit value change unit may transmit a second current upper limit value change command to the consumer site at the end of the demand response in accordance with the instruction to return the demand response current upper limit value at the consumer site to the original current upper limit value.

[0026] According to another aspect, the present invention may be an electric power supply and demand management system including an electric power supply and demand management device that requests and executes a demand response to a plurality of consumer sites that receive a supply of electric power via a power transmission line, and an information and communication terminal device associated with the consumer sites. The electric power supply and demand management device may include a database that manages electric power usage information related to a history of past electric power usage at each of the plurality of consumer sites, a consumer site extraction unit that refers to the database in accordance with an instruction related to a demand response and extracts at least one of the consumer sites based on the electric power usage information at each of the plurality of consumer sites, a demand response request unit that transmits a demand response request notice to an information and communication terminal device associated with the at least one of the extracted consumer sites in order to request the demand response, and a current upper limit value change unit that performs control to change a current upper limit value at the consumer site that has granted the request for the demand response in accordance with an approval notice transmitted from the information and communication terminal device in response to the demand response request notice. The information communication terminal device may also include a user interface that prompts a user to select whether or not to accept the demand response request in accordance with the received demand response request notification, and a transmission unit (communication unit) that transmits the acceptance notification based on the selected acceptance or rejection to the power supply and demand management device.

[0027] Furthermore, the present invention according to another aspect may be a power supply and demand management method by a power supply and demand management device for requesting and executing a demand response from a plurality of consumer sites receiving a supply of power via a power transmission line. The method may include: storing and managing power usage information relating to a history of past power usage of each of the plurality of consumer sites in a database; receiving a command related to the demand response; referring to the database in accordance with the received command, and extracting at least one or more consumer sites based on the power usage information of each of the plurality of consumer sites; transmitting a demand response request notice to an information communication terminal device associated with the at least one or more extracted consumer sites for the demand response request; receiving an approval or rejection notice transmitted from the information communication terminal device in response to the demand response request notice; and performing control to change an upper limit value of a current amount at each of the consumer sites that has approved the request for the demand response in accordance with the received approval or rejection notice.

[0028] Furthermore, the present invention may be a computer program for causing a computing device to execute the method, or a computer-readable recording medium non-transitoryly carrying the computer program.

[0029] In this specification, the term "means" does not simply mean physical means, but also includes cases where the functions of the means are realized by software. The functions of one means may be realized by two or more physical means, or the functions of two or more means may be realized by one physical means. Furthermore, the term "system" refers to a logical collection of multiple devices (or functional modules that realize specific functions), and it does not matter whether each device or functional module is contained within a single housing. Effect of the Invention

[0030] According to the present invention, it is possible to effectively extract consumers who can comply with a demand response request from within a specific power consumption area, and quickly obtain the approval or disapproval of the consumer.

[0031] Other technical features, objects, and operational effects or advantages of the present invention will become apparent from the following embodiments described with reference to the accompanying drawings. The effects described in this specification are merely examples and are not limiting, and other effects may also be present. [Brief description of the drawings]

[0032] [Figure 1] FIG. 1 is a diagram showing an example of a power supply and demand management system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a diagram for explaining an example of a functional model of a power supply and demand management device according to an embodiment of the present invention. [Diagram 3] FIG. 3 is a diagram showing an example of a data structure of a database in the power supply and demand management device according to one embodiment of the present invention. [Figure 4] FIG. 4 is a diagram showing an example of a power reduction request amount determination table in the power supply and demand management device according to one embodiment of the present invention. [Diagram 5] FIG. 5 is a diagram showing an example of a demand response request notification by the power supply and demand management device according to one embodiment of the present invention. [Figure 6] FIG. 6 is a block diagram showing an example of the configuration of a customer site in a power supply and demand management system according to one embodiment of the present invention. [Figure 7] FIG. 7 is a block diagram showing an example of the configuration of an information communication terminal device in the power supply and demand management system according to one embodiment of the present invention. [Figure 8] FIG. 8 is a diagram showing an example of a screen on a user interface of an information communication terminal device in the power supply and demand management system according to one embodiment of the present invention. [Figure 9] FIG. 9 is a diagram showing an example of a screen on a user interface of an information communication terminal device in the power supply and demand management system according to one embodiment of the present invention. [Figure 10]FIG. 10 is a sequence chart for explaining an example of the flow of the entire process in the power supply and demand management system according to one embodiment of the present invention. [Figure 11A] FIG. 11A is a flowchart for explaining an example of the DR execution process of the power supply and demand management device according to one embodiment of the present invention. [Figure 11B] FIG. 11B is a flowchart for explaining an example of the DR execution process of the power supply and demand management device according to one embodiment of the present invention. [Figure 12] FIG. 12 is a diagram showing an example of a hardware configuration of a computing device in a system according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0033] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. However, the embodiment described below is merely an example, and there is no intention to exclude various modifications and application of techniques not specified below. The present invention can be implemented by various modifications (for example, combining the respective embodiments) within the scope of the gist of the present invention. In addition, in the following description of the drawings, the same or similar parts are represented by the same or similar reference numerals. The drawings are schematic and do not necessarily correspond to actual dimensions, ratios, etc. The drawings may also include parts with different dimensional relationships and ratios.

[0034] FIG. 1 is a diagram showing an example of a power supply and demand management system according to an embodiment of the present invention. As shown in the figure, the power supply and demand management system 1 is generally configured to include a power supply command device 10, a power supply and demand management device 20, and a plurality of customer sites 30, which are communicatively connected to a communication network 40. Furthermore, power generated at a power plant (not shown) is stepped down to a predetermined voltage via a substation S and a power transmission line and / or a power distribution line (hereinafter simply referred to as "power transmission line") EL and supplied to the plurality of customer sites 30. In the power supply and demand management system 1 of the present disclosure, as described in detail below, the power supply and demand management device 20 balances power supply and demand by demand response (hereinafter referred to as "DR") to the customer sites 30.

[0035] The power supply command device 10 issues a DR command (hereinafter referred to as a "DR command") indicating the amount of power to be reduced according to a prediction of the power supply and demand balance in the power system. The DR command includes, for example, the total amount of power to be reduced by implementing a demand response to adjust the supply and demand balance (hereinafter referred to as a "requested total amount of power reduction"). For example, the DR command includes information such as the implementation date and time of the demand response "January xx, 2020, 17:00 to 19:00" and the maximum available amount of power "1 MW" (current upper limit value "10,000 A"). The power supply command device 10 is managed and operated by, for example, a power company, a power transmission and distribution business operator, a business operator called an aggregation coordinator (sometimes simply called an aggregator), or the like, but is not limited thereto. The DR command by the power supply command device 10 is transmitted to the power supply and demand management device 20 via a communication network 40.

[0036] The power supply and demand management device 20 remotely and comprehensively controls each consumer site 30 to adjust the balance of power supply and demand. For example, in accordance with a DR command from the power supply command device 10, the power supply and demand management device 20 remotely adjusts and / or controls the maximum available power amount (i.e., the maximum current usage amount) for at least some of the consumer sites 30 that have been approved, in order to ensure the amount of power that should be reduced by the multiple consumer sites 30 in the area under its jurisdiction. The power supply and demand management device 20 is operated and managed by, for example, an aggregator, but is not limited to this. The aggregator can be, for example, a power company, a power transmission and distribution business operator, and / or a retail electricity business operator.

[0037] The power supply and demand management device 20 includes a database 220 for managing various information related to power usage at the customer site 30 (hereinafter referred to as "power usage information"). The power usage information includes, for example, a history of past power usage at the customer site 30. The power supply and demand management device 20 may be physically built on one computing device or logically built on one computing device, or may be distributed and built on several computing devices. A hardware configuration of such a computing device is illustrated in FIG. 11, but is not limited thereto and is well known, so a detailed description thereof will be omitted. The power supply and demand management device 20 may build a secure communication session with the power supply command device 10 and the customer site 30 by using a secure communication technology such as SSL / TSL via a communication network 40, for example.

[0038] For example, when the power supply and demand management device 20 receives a DR command from the power supply command device 10, it refers to the database 220 to extract at least one or more consumer sites 30 that are effective in ensuring the amount of power reduction, transmits a DR request (i.e., a request to change the maximum usable power amount (current upper limit value) according to a predetermined schedule, a so-called lower DR request) to the extracted consumer site 30, and obtains approval for the request from the consumer site 30. Then, when the power supply and demand management device 20 obtains approval from the consumer site 30, it transmits an instruction to set the maximum usable power amount to the consumer site 30.

[0039] The consumer site 30 is a consumer site that uses power supplied via the power transmission line EL. Consumers are typically classified into high-voltage large-volume consumers, high-voltage small-volume consumers, and low-voltage consumers according to the size of the contracted power in a power contract with a power company or the like. In this disclosure, the consumer is described assuming a low-voltage consumer such as an ordinary household, but is not limited to this. The contracted power is also referred to as a contracted ampere.

[0040] The customer site 30 includes, for example, a meter 320, a circuit breaker, a distribution board (not shown), and various electrical devices (so-called load devices) required for commercial use of power supplied from the power grid. In the present disclosure, the customer site 30 further includes a current amount adjustment device 330 (see FIG. 6 ). The current amount adjustment device 330 may operate under remote control of the power supply and demand management device 20. For example, the current amount adjustment device 330 may temporarily change the upper limit of the amount of usable power within the range of the contracted amperes for the customer site 30 in accordance with an instruction to set the maximum amount of usable power received from the power supply and demand management device 20.

[0041] In this disclosure, the customer site 30 is described as a site that receives a DR request, but may be configured to include a power generation facility so as to function as an energy resourcer (i.e., a distributed small-scale power plant) in the VPP. The power generation facility may include, for example, a solar power generation facility, a wind power generation facility, or a cogeneration facility such as a gas power generation facility.

[0042] The consumer site 30 also includes an information and communication terminal device 340 that is interactively operated by an administrator who manages the consumer site 30 (or a user who is a consumer who uses electricity). The information and communication terminal device 340 receives, for example, a DR request notification from the power supply and demand management device 20, and in response thereto, transmits approval or disapproval to the power supply and demand management device 20. The information and communication terminal device 340 is associated with the consumer site 30 by, for example, a common identification code so that the information and communication terminal device 340 is recognized as a part of the consumer site 30 by the aggregator.

[0043] Typically, the information and communication terminal device 340 is a computing device that has a communication function and can be interactively operated by an administrator, such as, but not limited to, a desktop computer, a notebook computer, a tablet computer, a smartphone, a feature phone, and other intelligent devices. In the present disclosure, the information and communication terminal device 340 is assumed to be a smartphone capable of touch operation.

[0044] That is, the information communication terminal device 340 is composed of hardware resources such as a CPU (processor), a chipset, a memory, a communication module, a user interface, and software resources such as an operating system (which may include, for example, a kernel, various device drivers, a standard library, and the like; hereinafter referred to as "OS"). The information communication terminal device 340 executes various application programs on the OS under the control of the processor to realize desired functions. In the present disclosure, the information communication terminal device 340 may implement, as one of the application programs, a DR client program including a set of instructions or a module for causing the information communication terminal device 340 to function as a user interface for responding to a DR request. Alternatively, the information communication terminal device 340 may be configured to implement a browser program as one of the application programs, and the above functions may be realized by a browser add-on program realized by the browser program.

[0045] The communication network 40 may be, for example, a mobile communication network conforming to a mobile communication system standard. Instead of or in addition to a mobile communication network, the communication network 40 may be an IP-based computer network. Alternatively, the communication network 40 may be constructed using the power transmission line EL, that is, by a communication method in which communication data is superimposed on the power transmission line EL. The communication network 40 may be a network of any protocol that enables communication between the power supply and demand management device 20 and the consumer site 30 and / or the information communication terminal device 340 as nodes.

[0046] FIG. 2 is a diagram for explaining an example of a functional model of a power supply and demand management device according to an embodiment of the present invention. In the diagram, among various components (constituent elements) of the power supply and demand management device 20, components particularly related to the present disclosure are shown, and other components are omitted as appropriate to avoid complication. That is, in the example shown in the diagram, the power supply and demand management device 20 is generally configured to include a communication unit 210, a database 220, and a DR execution unit 230. These components can be realized by the hardware components themselves, or by the processor of the power supply and demand management device 20 executing a DR management program on an OS in cooperation with various hardware components.

[0047] The communication unit 210 is a communication interface for exchanging various information with external devices, particularly the power supply command device 10 and each consumer site 30, via the communication network 40. As an example, the communication unit 210 receives a DR command from the power supply command device 10 and passes it to the DR execution unit 230. As another example, the communication unit 210 receives power usage from each consumer site 30 periodically or irregularly and passes it to the DR execution unit 230 to accumulate in the database 220. As yet another example, the communication unit 210 transmits a notification regarding a DR request (hereinafter referred to as a "DR request notification") to a specific consumer site 30, and receives notifications indicating whether or not the request is approved (hereinafter referred to as an "approval approval notification") from some of the consumer sites 30.

[0048] As described above, the database 220 manages various types of information related to power usage at each customer site 30. For example, the database 220 accumulates and manages power usage information for each customer site 30.

[0049] 3 is a diagram showing an example of a data structure of a database in a power supply and demand management device according to an embodiment of the present invention. As shown in the figure, for example, each record in the database 220 may include fields such as a customer site ID, an email address, a contracted ampere, an incentive, a DR permission status, and power usage information, but is not limited thereto. Although not shown, each record may further include fields related to attribute information of the customer site 30, such as the name, address, telephone number, and passcode of the customer site 30.

[0050] Referring to the figure, the consumer site ID is an ID for identifying each consumer site 30. The email address indicates the email address of the administrator of the consumer site 30 to which the power supply and demand management device 20 transmits a DR request. The email address can be used as a user ID of the consumer site 30 (i.e., the administrator). The contracted ampere indicates the contracted amount of power based on the power contract between the consumer site 30 and a power company or the like. The incentive indicates a reward or the like given to the consumer site 30 that has granted a DR request. The DR permission status indicates the status of whether or not the DR request has been granted. The power usage information is history data indicating the amount of power usage at each consumer site 30 for each predetermined time interval in the past. The amount of power usage can be obtained, for example, from a meter 320 installed at the consumer site 30, but is not limited to this, and may be provided by a power company, a power transmission and distribution business operator, or the like. The power usage information is, for example, an average value of the amount of power usage for every 30 minutes or every hour, but is not limited to this. For example, the power usage information is 、3 It may also be the peak value of power usage per minute or hour.

[0051] 2, the DR execution unit 230 requests and executes DR to specific consumer sites 30 in a region under its jurisdiction in accordance with a DR command. In the present disclosure, the DR execution unit 230 includes, for example, a consumer site extraction unit 231, a reduction request power amount determination unit 232, a DR request unit 233, a DR permission counting unit 234, and a current amount upper limit value change unit 235.

[0052] The consumer site extraction unit 231 refers to the database 220 based on the total amount of power reduction requested indicated by the DR command, and extracts one or more consumer sites 30 that can effectively realize the implementation of DR. That is, the consumer site extraction unit 231 extracts a predetermined number of consumer sites 30 that are expected to have high power usage in a specific time period on the DR implementation day indicated by the DR command, based on the power usage information for each consumer site 30 in the database 220, based on a predetermined threshold value. The number of consumer sites 30 to be extracted can be determined according to, for example, the total amount of power reduction requested.

[0053] For example, the consumer site extraction unit 231 acquires the power consumption of the consumer sites 30 in the time period of the day corresponding to one week before the implementation date indicated by the DR command, and extracts a predetermined number of consumer sites 30 in order of the largest value (or average value). As a specific example, if the DR command is issued on the implementation date "January xx, 2020, 17:00-19:00" and the total power reduction requested is "1 MW," the consumer site extraction unit 231 extracts consumer sites 30 whose power consumption from 17:00-19:00 on the day one week before January xx, 2020 was 4 kW or more.

[0054] Alternatively, for example, the consumer site extraction unit 231 tallies the power consumption of the consumer sites 30 in the same time period for each day in a certain period immediately preceding the implementation date indicated by the DR command, and extracts a predetermined number of consumer sites 30 in order of increasing value (or the average value). As a specific example, if the DR command is issued on the implementation date "January xx, 2020, 17:00-19:00" and the total power reduction requested is "1 MW," the consumer site extraction unit 231 extracts consumer sites 30 whose average power consumption from 17:00-19:00 for each day in the most recent week from January xx, 2020 is 4 kW or more.

[0055] In addition, as described below, if the expected power reduction amount calculated based on the individual requested power reduction amount of the consumer sites 30 that have approved the DR request does not reach the total requested power reduction amount, the consumer site extraction unit 231 further extracts consumer sites 30 that are the target of the DR request.

[0056] The reduction requested power amount determination unit 232 determines an individual reduction requested power amount for each extracted consumer site 30 according to, for example, a reduction requested power amount determination table 2321 as shown in Fig. 4. For example, the reduction requested power amount determination unit 232 refers to the database 220 to identify the contracted amperes of the extracted consumer site 30, and determines the reduction requested power amount according to the reduction requested power amount determination table 2321. For example, if the contracted amperes of a consumer site 30 are 40A, the reduction requested power amount is determined to be 30A of power (i.e., 3kW if the effective voltage is 100V) as the reduction requested power amount for the consumer site 30. The reduction requested power amount determination unit 232 creates a DR request list indicating the reduction requested power amounts for the extracted consumer sites 30, and transfers it to the DR request unit 233 and the DR permission counting unit 234.

[0057] As a specific example, it is assumed that the customer site extraction unit 231 is able to extract 200 customer sites 30 (contract amperes are 40A) whose past actual power consumption values ​​were 4kW or more. In this case, the requested power reduction amount for each customer site 30 is 3kW, 3kW*200 units=600kW This means that there is still a shortage of 400 kW for the total power reduction requested of 1000 kW. Therefore, in order to secure an additional 400 kW, the customer site extraction unit 231 further extracts customer sites 30 whose past power consumption was 3 kW or more and less than 4 kW. In this case, if the customer site extraction unit 231 is able to extract, for example, 400 customer sites 30, the total power reduction requested will be 2kW*400 units=800kW This means a total of 1,400kW will be secured for 600 households.

[0058] The DR request unit 233 creates a DR request notification for each consumer site 30 according to the DR request list delivered from the consumer site extraction unit 231, pushes the notification to the information communication terminal device 340 associated with the consumer site 30, and starts accepting DR requests. The DR request notification includes, for example, the DR implementation date and time (start date and time and end date and time), the current contracted ampere, and the upper limit usable ampere at the implementation date and time, as shown in FIG. 5. Upon receiving the DR request notification, the consumer site 30 (i.e., the information communication terminal device 340 in this example) selects whether to accept the request under interactive operation by the administrator or according to an automatic response process, and transmits a notification indicating whether to accept the request (hereinafter referred to as an "approval notification") to the power supply and demand management device 20.

[0059] When the DR permission counting unit 234 receives a notification of whether or not the DR request is approved from the consumer site 30, it counts the requested power reduction amounts of the consumer sites 30 that have approved the request, and calculates the current estimated power reduction amount. When the DR permission counting unit 234 compares the calculated estimated power reduction amount with the total requested power reduction amount and determines that the calculated estimated power reduction amount has reached the total requested power reduction amount, it creates a DR implementation list indicating the implementation details of DR based on the contents of the approval of the DR request of the consumer site 30 that has approved, and transfers this to the current upper limit value changing unit 235. The DR implementation list may include, for example, the consumer sites 30 that have approved the DR request list and the DR current upper limit value associated therewith.

[0060] In addition, when the DR permission calculation unit 234 determines that the calculated expected reduction amount of power has reached the total amount of power reduction requested, it sends a notification to the information communication terminal device 340 at the consumer site 30 that has not yet received a notification of approval or rejection that the acceptance of the DR request has ended.

[0061] On the other hand, when the DR permission tabulation unit 234 determines that the calculated estimated reduction amount of power does not reach the total power reduction requested amount of power, it notifies the consumer site extraction unit 231 of the shortfall (shortage) as an additional amount of power reduction requested. The DR permission tabulation unit 234 notifies the consumer site extraction unit 231 to extract consumer sites 30 and make requests to the consumer sites 30 until the calculated estimated reduction amount of power reaches the total power reduction requested amount of power.

[0062] The current upper limit value change unit 235 remotely controls the setting or change of the current upper limit value according to a DR implementation schedule for the consumer site 30 that has approved the DR request, based on the requested amount of power reduction. For example, when the DR start date and time arrives, the current upper limit value change unit 235 transmits a current upper limit value change command specifying a DR current upper limit value to the current amount adjustment device 330 of each consumer site 30 according to the DR implementation list. In response to this, the current amount adjustment device 330 of the consumer site 30 changes the current current upper limit value to the DR current upper limit value.

[0063] Fig. 6 is a block diagram showing an example of the configuration of a customer site in an electricity supply and demand management system according to an embodiment of the present invention. In the figure, of the various components of the customer site 30, those related to the technology according to the present disclosure are shown. That is, in the example shown in the figure, the customer site 30 is configured to include, for example, a control device 310, a measuring device 320, and a current amount adjustment device 330. In addition, as described above, the customer site 30 includes an information communication terminal device 340 for interactive operation by the administrator of the customer site 30.

[0064] The control device 310 performs overall control of the power used at the consumer site 30. In the present disclosure, the control device 310 is configured to be capable of controlling the current amount adjusting device 330. The control device 310 can also control electric appliances (load devices). Such a control device 310 is sometimes referred to as a Home Energy Management System (HEMS).

[0065] The control device 310, the measuring device 320, the current amount adjustment device 330, etc. may be connected via, for example, a data communication line. The data communication line may be wired or wireless. An example of a wireless data communication line connecting the measuring device 320 and the current amount adjustment device 330 may be, for example, a so-called B route, but is not limited to this.

[0066] The control device 310 is communicatively connected to the power supply and demand management device 20 via a communication network 40 (e.g., a 4G or 5G mobile communication system). In the present disclosure, the control device 310 is configured to be able to receive a current upper limit value change command. The control device 310 may be associated with and communicatively connected to an information communication terminal device 340. The control device 310 is communicatively connected to the information communication terminal device 340 by, for example, the WiFi (registered trademark) standard, but is not limited to this.

[0067] When the control device 310 receives the current upper limit value change command from the power supply and demand management device 20, it controls the current amount adjustment device to change the current amount upper limit value to the DR current amount upper limit value specified by the current amount upper limit value change command. Furthermore, the control device 310 controls the current amount adjustment device to return the DR current amount upper limit value to the original current amount upper limit value, which is the contracted amperes, at the end date and time of the DR in accordance with the current amount upper limit value change command. Alternatively, at the end date and time of the DR, the power supply and demand management device 20 may transmit a current amount upper limit value change command to the customer site 30 to return the changed current amount upper limit value to the contracted amperes, and in response to this, the customer site 30 may return the current current amount upper limit value to the original current amount upper limit value.

[0068] The meter 320 may measure the usage of power (commercial power) supplied from the power grid. The meter 320 transmits the measured power usage to the control device 310 via a wireless data communication line, for example at a predetermined time interval, and the control device 310 then transmits the power usage to the power supply and demand management device 20 via the communication network 40. The meter 320 may also have a function of directly communicating with the power supply and demand management device 20. A smart meter that digitally measures the power usage and has a communication function is one embodiment of the meter 320.

[0069] The current amount adjustment device 330 adjusts the current upper limit value at the consumer site 30. In the present disclosure, the current amount adjustment device 330 is configured to include, but is not limited to, a circuit breaker 332. When the current amount adjustment device 330 determines that a current value based on the amount of power used by a load device at the consumer site 30 exceeds the current upper limit value, it controls the circuit breaker 332 to cut off the current from the power grid. The current upper limit value is normally equal to the contract ampere, but is set as the DR current upper limit value when DR is implemented.

[0070] For example, the current amount adjustment device 330, under the control of the control device 310, changes the current upper limit value to the DR current upper limit value indicated by the current amount upper limit value change command. For example, when the customer site 30 with a contract ampere of 60 A accepts a DR request for a DR current upper limit value of 45 A, the current amount adjustment device 330 changes the current upper limit value from the current 60 A to 45 A as DR is implemented. When the current amount adjustment device 330 determines that the current value based on the current power consumption amount by the load device exceeds the current current upper limit value of 45 A, it controls the circuit breaker 332 to cut off the current. Furthermore, when the DR end date and time arrives, the current amount adjustment device 330, under the control of the control device 310, changes the current current upper limit value (DR current upper limit value) to the current upper limit value indicated by the original contract ampere.

[0071] In this disclosure, an example is shown in which the current amount adjustment device 330 is configured as a separate entity from the control device 310, but this is not limited thereto, and the current amount adjustment device 330 may be configured as a part of the control device 310.

[0072] FIG. 7 is a block diagram showing an example of the configuration of an information communication terminal device in a power supply and demand management system according to an embodiment of the present invention. The information communication terminal device 340 functions as a terminal device for interactive operation by an administrator of the consumer site 30. In the figure, among various components (constituent elements) of the information communication terminal device 340, components particularly related to the present disclosure are shown, and other components are omitted as appropriate to avoid complication. In the example shown in the figure, the information communication terminal device 340 is configured to include a control unit 341, a storage unit 342, a user interface unit 343, and a communication unit 344. Such components can be realized by the hardware components themselves, or, for example, by a processor of the information communication terminal device executing a DR client program on an OS in cooperation with various hardware resources.

[0073] The control unit 341 is a component for comprehensively controlling the information communication terminal device 340, and typically includes a processor and an OS (including, for example, various device drivers) of the information communication terminal device 340, a DR client program, etc. In other words, the processor of the information communication terminal device executes the DR client program on the OS, causing the information communication terminal device 340 to function as a DR client application.

[0074] The storage unit 342 is a component that stores various programs and data sets, and is typically configured to include a memory device provided for use by the processor of the information communication terminal device 340. As an example, the storage unit 342 stores an operating system, a DR client program, and a customer site profile. The DR client program may be configured to include a subprogram or module for prompting the administrator to approve or deny the request based on the DR request notification transmitted by the power supply and demand management device 20. The customer site profile is data or information related to the customer site 30, and may include, for example, a customer site ID, attribute information of the customer site, the approval status of DR, a current upper limit value of the current amount, and other data.

[0075] The user interface unit 343 is a component that enables the administrator to interactively operate the information communication terminal device 340, and may be configured to include, for example, an input / output device such as a touch panel in which a display and a position input mechanism are integrated, or a speaker. As one example, in response to a predetermined operation on the user interface unit 343 by the administrator, the user interface unit 343 displays a screen for inputting whether or not to accept the DR request notification from the power supply and demand management device 20. As another example, the user interface unit 343 displays the current power usage of the consumer site 30 itself on the screen.

[0076] The communication unit 344 is a component that transmits and receives various data between the power supply and demand management device 20 and other external devices via the communication network 40, and is typically configured to include a communication interface circuit or a chipset. The transmission unit and / or the reception unit are one aspect of the communication unit 344.

[0077] When the information communication terminal device 340 configured as described above receives a DR request notification, it displays a DR request notification screen 800, for example, as shown in FIG. 8 on the user interface unit 343 to inform the administrator that a DR request has been received. In response to this, the administrator operates the user interface unit 343 to display a DR request approval screen 900, for example, as shown in FIG. 9. The DR request approval screen 900 displays, for example, the DR implementation date, start time, end time, requested reduction power amount, and incentives. The administrator selects "Yes" on the DR request approval screen 900 when cooperating with the DR request (approving), and selects "No" when not cooperating with the DR request (not approving). As a result, the information communication terminal device 340 transmits an approval notification indicating approval or disapproval to the power supply and demand management device 20.

[0078] In this example, the information communication terminal device 340 is configured to display the DR request approval / rejection screen 900 upon receiving a DR request notification and prompt the administrator to input whether or not to approve the request, but this is not limited to this. The information communication terminal device 340 may be configured to automatically select approval of the DR request and send an approval / rejection notification if the administrator sets approval conditions in advance and the approval conditions are met.

[0079] The administrator inputs, for example, whether or not to approve the DR request notification to such an information communication terminal device 340. As another example, the administrator may operate the user interface unit 343 to display and confirm the current power usage of the consumer site 30 itself on the screen.

[0080] FIG. 10 is a sequence chart for explaining an example of the flow of the entire process in the power supply and demand management system according to one embodiment of the present invention.

[0081] Referring to the figure, in order to enable participation in a power supply and demand plan by DR provided by the power supply and demand management device 20, the customer site 30 concludes a DR license contract with the power supply and demand management device 20 (S1001). Such a contract may be concluded through a document or, for example, by electronic reading. For example, an administrator may operate the user interface unit 343 of the information communication terminal device 340 to download a DR client program and execute the program to access the power supply and demand management device 20 and conclude a DR license contract by electronically reading the contract document. As a result, the power supply and demand management device 20 registers the customer site 30 in the database 220 as a DR request candidate.

[0082] The power supply command device 10 formulates a DR implementation plan in accordance with a prediction of the power supply and demand balance in the power system (S1002), and transmits a DR command indicating a total power reduction request to the power supply and demand management device 20 (S1003).

[0083] When the power supply and demand management device 20 receives the DR command, it refers to the database 220 and extracts one or more consumer sites 30 in order to secure the total amount of power reduction requested (S1004). The power supply and demand management device 20 determines the amount of power reduction requested to request DR for the extracted consumer sites 30 (S1005) and transmits a DR request notice to each consumer site 30 (S1006). The DR request notice may be transmitted by push type transmission to the mailer of the information communication terminal device 340 using a registered email address, or may be transmitted by push type transmission to a DR client application.

[0084] When the customer site 30 (i.e., the information communication terminal device 340) receives the DR request notification, it displays an approval / non-approval screen and prompts the administrator to input whether or not to approve the request, and the administrator selects whether or not to approve (S1007). As a result, the information communication terminal device 340 transmits an approval / non-approval notification to the power supply and demand management device 20 (S1008).

[0085] When the power supply and demand management device 20 receives the approval / rejection notification from each consumer site 30, it tallies up the amount of power reduction requested by the approved consumer sites 30 and calculates the amount of power reduction expected (S1009). If the power supply and demand management device 20 can secure an amount of power reduction expected to be equal to or greater than the total amount of power reduction requested, it stops accepting approval / rejection notifications from the consumer sites 30 and transmits a notification that acceptance of the DR request has ended to consumer sites 30 that have not yet transmitted approval / rejection notifications.

[0086] Next, the power supply and demand management device 20 implements DR in accordance with the DR implementation plan (S1010), and transmits a current upper limit change command to the customer site 30 that has approved the implementation (S1010).

[0087] When the customer site 30 receives the current upper limit value change command, it changes the current current upper limit value to the DR current upper limit value based on the received current upper limit value change command, thereby realizing DR (S1012). Furthermore, when the DR end time arrives, the customer site 30 returns the current current upper limit value to the original current upper limit value (i.e., the contracted amperes). Alternatively, when the DR end time arrives, the power supply and demand management device 20 may transmit a current upper limit value change command to the customer site 30 to return the changed current upper limit value to the contracted amperes, and in response to this, the customer site 30 may return the current current upper limit value to the original current upper limit value.

[0088] 11A and 11B are flowcharts showing an example of a DR execution process of the power supply and demand management device according to an embodiment of the present invention. The process shown in the figure is realized by a processor of the power supply and demand management device 20 executing a DR management program in cooperation with various hardware components.

[0089] As shown in A of the figure, the power supply and demand management device 20 waits until it receives a DR command from the power supply command device 10 (S1101). When the power supply and demand management device 20 receives the DR command from the power supply command device 10 (Yes in S1101), the consumer site extraction unit 231 refers to the database 220 based on the total power reduction requested indicated by the DR command, and extracts one or more consumer sites 30 that can effectively realize the implementation of DR (S1102).

[0090] Next, the power reduction request amount determination unit 232 determines an individual power reduction request amount for each of the extracted consumer sites 30 (S1103). For example, the power reduction request amount determination unit 232 refers to the database 220 and determines the power reduction request amount according to the contracted ampere of the extracted consumer site 30. In addition, the power reduction request amount determination unit 232 creates a DR request list indicating the power reduction request amount for the extracted consumer site 30.

[0091] The DR request unit 233 creates a DR request notification for each consumer site 30 according to the created DR request list, and transmits the notification to the information communication terminal device 340 of the consumer site 30 (S1104). This allows the administrator to know that a DR cooperation request has been made from the aggregator. When the information communication terminal device 340 receives the DR request notification, the administrator operates the user interface unit 343 of the information communication terminal device 340 to select whether or not to accept the request, and the information communication terminal device 340 transmits an approval or disapproval notification to the power supply and demand management device 20.

[0092] The power supply and demand management device 20 waits until it receives a notification of whether or not the DR request is approved from the consumer site 30 (S1105). When the power supply and demand management device 20 receives the notification of whether or not the DR request is approved from the consumer site 30 (Yes in S1105), the DR approval counting unit 234 counts the requested reduction power amounts of the consumer sites 30 that have approved the request, and calculates the current estimated reduction power amount (S1106).

[0093] Next, the DR permission tabulation unit 234 judges whether the calculated estimated reduction amount of power is equal to or greater than the reduction request total amount of power (S1107). If the DR permission tabulation unit 234 judges that the calculated estimated reduction amount of power is not equal to or greater than the reduction request total amount of power (No in S1107), it calculates the shortfall (S1108) and returns to the process of S1102 to further extract other consumer sites 30 by the consumer site extraction unit 231.

[0094] On the other hand, when the DR permission tabulation unit 234 determines that the calculated estimated power reduction amount is equal to or greater than the total power reduction request amount (Yes in S1107), it creates a DR implementation list based on the content of the permission for the DR request of the authorized consumer site 30 (S1109 in FIG. 11B), and the power supply and demand management device 20 waits until the DR implementation date (S1110). The DR implementation list may include, for example, a DR current amount upper limit value for each consumer site 30 that has granted permission to the DR request list.

[0095] When the DR implementation day arrives, the current upper limit value change unit 235 transmits a current upper limit value change command to the customer site 30 that has approved the request in order to remotely control the setting of the current upper limit value according to the DR implementation list (S1111). As a result, the customer site 30 that has received the current upper limit value change command changes the current current upper limit value to the DR current upper limit value. Note that the current upper limit value changed to the DR current upper limit value is changed back to the current upper limit value, which is the original contract ampere, when DR ends.

[0096] As described above, according to the present embodiment, the power supply and demand management device 20 transmits a DR request notification to the consumer sites 30 in the area under its jurisdiction based on the DR command from the power supply command device 10, and sets a DR current upper limit value for the consumer sites 30 that have accepted the DR request in response to the DR request, thereby enabling efficient and reliable implementation of DR. In particular, according to the present embodiment, the power supply and demand management device 20 extracts consumer sites 30 that are expected to have a large amount of power usage on the DR implementation day based on the power usage information accumulated in the database 220, so that DR can be effectively implemented. Furthermore, according to the present embodiment, the administrator (user) of the consumer site 30 can select whether or not to accept the DR request with a simple operation using an information communication terminal device 340 such as a smartphone. This improves the response rate from the administrator, making it easier to secure the total amount of power requested for reduction more efficiently and reliably.

[0097] The above-described embodiments are merely examples for explaining the present invention, and are not intended to limit the present invention to these embodiments. The present invention can be embodied in various forms without departing from the spirit of the present invention.

[0098] For example, in the above embodiment, in the power supply and demand management system 1, the power supply and demand management device 20 controls the entire consumer site 30 in response to a demand response request to limit the upper limit of the current amount, but the present invention is not limited to this, and the power supply and demand management system 1 may control the consumer site 30 to limit the upper limit of the current amount for a specific electrical device at the consumer site 30. For example, the control device 310 of the consumer site 30 configured as a HEMS may implement a forced downward DR for electronic devices with high power consumption (e.g., air conditioners, IH appliances, etc.) in accordance with a current upper limit value change command from the power supply and demand management device 20. Furthermore, the control device 310 may implement an upward DR for storage batteries, solar cells, cogeneration systems, etc. at the consumer site 30 under the control of the power supply and demand management device 20.

[0099] In addition, in the methods disclosed herein, steps, operations, or functions may be performed in parallel or in a different order, provided that the results are not inconsistent. The steps, operations, and functions described are provided merely as examples, and some of the steps, operations, and functions may be omitted or combined into one, or other steps, operations, or functions may be added, without departing from the spirit of the invention.

[0100] In addition, although various embodiments are disclosed in this specification, specific features (technical matters) in one embodiment can be added to or replaced with specific features in other embodiments, with appropriate modifications, and such forms are also included in the spirit of the present invention. [Explanation of symbols]

[0101] 1...Electricity supply and demand management system 1 10...Power supply control device 20...Electricity supply and demand management device 210…Communications Department 220…Database 230…Demand response execution unit 231...Customer site extraction unit 232…Reduction request power amount determination unit 233…Demand Response Request Department 234…Demand response permission aggregation unit 235...Current upper limit value changing unit 30…Consumer site 310...Control device 320…Measuring Instruments 330…Current amount adjustment device 332…Circuit breaker 340...Information and communication terminal equipment 341...Control unit 342...Storage section 343...User interface section 344…Communications Department 40…Communications network

Claims

1. An electric power supply and demand management device that requests and executes a demand response from a plurality of consumer sites that receive electric power through a power transmission line, a database for managing power usage information relating to a history of past power usage at each of the plurality of customer sites; a consumer site extraction unit that refers to the database in accordance with an instruction regarding a demand response, and extracts at least one consumer site based on the power usage information of each of the plurality of consumer sites; a demand response request unit configured to transmit a demand response request notification to an information communication terminal device associated with the at least one or more extracted consumer sites in order to request the demand response; a current upper limit value change unit that performs control so as to change a current upper limit value at the consumer site that has granted the demand response request in accordance with an approval / non-approval notice transmitted from the information communication terminal device in response to the demand response request notice, The consumer site extraction unit extracts the consumer site whose power consumption is equal to or greater than a predetermined threshold. Electricity supply and demand management device.

2. The consumer site extraction unit extracts the consumer site based on a past amount of power usage at the consumer site during a specific time period. The power supply and demand management device according to claim 1 .

3. The consumer site extraction unit extracts a predetermined number of the consumer sites based on a total amount of power reduction requested by the command. The power supply and demand management device according to claim 1 or 2.

4. A power reduction request amount determination unit that determines a power reduction request amount for the customer site according to the extracted contract ampere of the customer site, The power supply and demand management device according to claim 3.

5. An electric power supply and demand management device that requests and executes a demand response from a plurality of consumer sites that receive electric power via a power transmission line, a database for managing power usage information relating to a history of past power usage at each of the plurality of customer sites; a consumer site extraction unit that refers to the database in accordance with an instruction regarding a demand response, and extracts at least one consumer site based on the power usage information of each of the plurality of consumer sites; a demand response request unit configured to transmit a demand response request notification to an information communication terminal device associated with the at least one or more extracted consumer sites in order to request the demand response; a current upper limit value change unit that performs control so as to change a current upper limit value at the consumer site that has granted the demand response request in accordance with an approval or disapproval notification transmitted from the information communication terminal device in response to the demand response request notification; and a power reduction request amount determination unit that determines a power reduction request amount for the customer site according to the extracted contract ampere of the customer site, The consumer site extraction unit extracts a predetermined number of the consumer sites based on a total amount of power reduction requested by the command. Electricity supply and demand management device.

6. A demand response permission aggregation unit that calculates an expected reduction amount of power based on the reduction requested amount of power at the authorized consumer site. The power supply and demand management device according to claim 4 or 5.

7. the demand response permission tabulation unit compares the calculated estimated reduction amount of power with the reduction requested total amount of power, the consumer site extraction unit, when the demand response permission aggregation unit determines that the expected reduction amount of power does not reach the reduction requested total amount of power, refers to the database and further extracts other consumer sites. The power supply and demand management device according to claim 6.

8. the demand response permission tabulation unit compares the calculated estimated reduction amount of power with the total reduction requested amount of power, and when it determines that the estimated reduction amount of power has reached the total reduction requested amount of power, creates a demand response implementation list including a demand response current amount upper limit value for executing the demand response to the authorized consumer site. The power supply and demand management device according to claim 6 or 7.

9. the demand response approval counting unit transmits a notification that acceptance of the demand response request has been completed to the consumer site that has not yet transmitted the approval approval notification; The power supply and demand management device according to claim 8.

10. the current amount upper limit value change unit transmits a first current amount upper limit value change command, which specifies the demand response current amount upper limit value, to the consumer site in accordance with the demand response implementation list; The power supply and demand management device according to claim 8.

11. the current amount upper limit value change unit transmits, to the consumer site, a second current amount upper limit value change command for returning the demand response current amount upper limit value at the consumer site to an original current amount upper limit value at the end of the demand response in accordance with the command. The power supply and demand management device according to claim 10.

12. An electric power supply and demand management system including an electric power supply and demand management device that requests and executes a demand response to a plurality of consumer sites that receive electric power through a power transmission line, and an information communication terminal device associated with the consumer sites, The power supply and demand management device includes: a database for managing power usage information relating to a history of past power usage at each of the plurality of customer sites; a consumer site extraction unit that refers to the database in accordance with an instruction regarding a demand response, and extracts at least one consumer site based on the power usage information of each of the plurality of consumer sites; a demand response request unit configured to transmit a demand response request notification to an information communication terminal device associated with the at least one or more extracted consumer sites in order to request the demand response; a current upper limit value change unit that performs control so as to change a current upper limit value at the consumer site that has granted the demand response request in accordance with an approval / non-approval notice transmitted from the information communication terminal device in response to the demand response request notice, The information communication terminal device a user interface that prompts a user to select whether or not to accept the demand response request in accordance with the received demand response request notification; a transmission unit that transmits the permission notification based on the selected permission to the power supply and demand management device, Electricity supply and demand management system.

13. A power supply and demand management method by a power supply and demand management device that requests and executes a demand response from a plurality of consumer sites that receive power supply via a power transmission line, comprising: accumulating and managing power usage information relating to a history of past power usage at each of a plurality of consumer sites in a database; receiving a command regarding a demand response; According to the received command, referring to the database, and extracting at least one of the customer sites based on the power usage information of each of the plurality of customer sites; transmitting a demand response request notification to an information communication terminal device associated with the at least one or more extracted consumer sites for the demand response request; receiving an approval or disapproval notification transmitted from the information communication terminal device in response to the demand response request notification; and performing control so as to change a current upper limit value at the consumer site that has granted the request for the demand response in accordance with the received notification of whether or not the request for the demand response is granted; Extracting the customer site includes extracting the customer site whose power consumption is equal to or greater than a predetermined threshold. Electricity supply and demand management methods.

14. A power supply and demand management method by a power supply and demand management device, which requests and executes a demand response from a plurality of consumer sites that receive power through a power transmission line, comprising: accumulating and managing power usage information relating to a history of past power usage at each of a plurality of consumer sites in a database; receiving a command regarding a demand response; According to the received command, referring to the database, and extracting at least one of the customer sites based on the power usage information of each of the plurality of customer sites; transmitting a demand response request notification to an information communication terminal device associated with the at least one or more extracted consumer sites for the demand response request; receiving an approval or disapproval notification transmitted from the information communication terminal device in response to the demand response request notification; performing control so as to change a current upper limit value at the consumer site that has granted the request for the demand response in accordance with the received notification of whether or not the request for the demand response is granted; determining a requested amount of power reduction for the customer site according to the extracted contract ampere of the customer site; Extracting the consumer sites includes extracting a predetermined number of the consumer sites based on a total amount of power reduction requested by the command. Electricity supply and demand management methods.

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