JP2023074143A - Electricity rate unit price determination device, controller, and electricity rate unit price determination method - Google Patents

Abstract

To provide an electricity rate unit price determination device and the like capable of inducing consumer demand.SOLUTION: An electricity rate unit price determining device 10 determines the price of electric power sold to a customer 20 or the like by an electric power retailer. The electricity rate unit price determination device 10 is provided with: a transaction price acquisition unit 11 that acquires a transaction price of electric power based on a sales plan with at least one of a business operator, a wholesale electric power market, and a power generation business; an imbalance price prediction unit 12 that calculates an imbalance price prediction value based on a market price of a wholesale electric power market; an electric power sales amount prediction unit 13 that calculates an electric power sales amount prediction value based on an electric power sales actual value; an electric power rate unit price calculation unit 14 that calculates an electric power sales amount difference between an electric power sales plan and the electric power sales amount forecast value and calculates the electricity rate unit price based on the electric power sales amount difference, the transaction price, and the imbalance price prediction value; and a notification unit 15 that notifies the consumer 20 or the like of the electricity rate unit price.SELECTED DRAWING: Figure 3

Description

TECHNICAL FIELD The present invention relates to an electricity bill unit price determination device, a controller, and an electricity bill unit price determination method.

With the full liberalization of the electricity retail market, private companies (so-called electricity retailers) have entered the electricity retail business one after another. Such retail electricity utilities may offer multiple electricity rate plans in order to generate revenue. Patent Literature 1 discloses a device that outputs a price menu (electricity price plan) that contributes to the profit of an electricity retailer.

JP 2019-21113 A

By the way, it is desirable to suppress the occurrence of an imbalance, which is the difference between the sales plan and the actual value, in order to secure the profit of the retail electricity supplier and to secure a stable power supply and demand balance. For example, if the power demand of consumers can be induced so as to suppress the occurrence of imbalance, it can contribute to suppressing the occurrence of imbalance, but Patent Document 1 does not disclose such a configuration.

Accordingly, the present invention provides an electricity bill unit price determination device, a controller, and an electricity bill unit price determination method that can guide the power demand of consumers.

An electricity bill unit price determination device according to an aspect of the present invention is an electricity bill unit price determination device for determining the price of electricity sold to consumers by an electricity retailer, the electricity retailer and the wholesale electricity trading market. and at least one of a power generation company, a transaction price acquisition unit that acquires a transaction price of electricity based on the electricity sales plan, and calculates an imbalance price prediction value based on the market price of the wholesale electricity market an imbalance price prediction unit; an electric power sales amount prediction unit that calculates an electric power sales amount prediction value based on the electric power sales actual value; and electric power sales that is the difference between the electric power sales plan and the electric power sales amount prediction value. an electricity bill unit price calculation unit for calculating a quantity difference and calculating an electricity bill unit price based on the sales electricity quantity difference, the transaction price, and the imbalance price prediction value; and a notification unit that notifies.

A controller according to an aspect of the present invention is a controller that controls an energy resource installed in a consumer, and includes an acquisition unit that acquires the electricity bill unit price calculated by the electricity bill unit price determination device, and the electricity bill and a second presentation unit that presents the unit price.

An electricity rate unit price determination method according to an aspect of the present invention is an electricity rate unit price determination method for determining the price of electricity sold to consumers by an electricity retailer, wherein the electricity retailer and the wholesale electricity trading market and at least one of a power generation company, obtaining a transaction price of electricity based on the electricity sales plan; and calculating an imbalance price prediction value based on the market price of the wholesale electricity market. calculating an electric power sales amount difference, which is a difference between the electric power sales plan and the electric power sales predicted value, and calculating the electric power sales amount difference, calculating an electricity bill unit price based on the difference, the transaction price, and the imbalance price prediction value; and notifying the consumer of the electricity bill unit price.

ADVANTAGE OF THE INVENTION According to one aspect of the present invention, it is possible to realize an electricity rate unit price determination device and the like that can guide the demand of consumers.

FIG. 1 is a block diagram showing a schematic configuration of a power demand guidance system according to Embodiment 1. FIG. FIG. 2 is a block diagram showing the functional configuration of the electricity bill unit price determination device according to the first embodiment. 3 is a block diagram showing a functional configuration of a controller according to Embodiment 1. FIG. 4 is a sequence diagram showing the operation of the power demand guidance system according to Embodiment 1. FIG. FIG. 5 is a flowchart showing the operation of the electricity bill unit price determination device according to the first embodiment. FIG. 6 is a block diagram showing a functional configuration of an electricity bill unit price determination device according to Embodiment 2. As shown in FIG. FIG. 7 is a block diagram showing a functional configuration of an electricity bill unit price determination device according to Embodiment 3. As shown in FIG. FIG. 8 is a sequence diagram showing a first example of operation of the power demand guidance system according to the third embodiment. FIG. 9 is a sequence diagram showing a second example of operation of the power demand guidance system according to the third embodiment.

(Circumstances leading to the present invention)
In Japan, the full liberalization of the electricity retail market began in 2016, and all users (consumers) such as households and shops can now freely select electricity purchase destinations and rate plans. As a result, until now, electricity was mainly supplied by electric power companies (former general electric utilities) in each area, but following the liberalization of the electricity market, new businesses entering the electricity retail business, the so-called "retailers," Electricity companies (former specified-scale electricity companies)” are appearing one after another. A retail electricity supplier is an example of a supplier that retails electricity. It should be noted that a business operator that retails electricity is not limited to a retail electricity business operator.

Along with the full liberalization of the electricity retail market, a planned value simultaneous same amount system was introduced from 2016. As a result, electricity retailers are obliged to always match the electricity sales plan and actual sales (for example, in units of 30 minutes). If an imbalance occurs, which is the difference between the retail electricity supplier's sales plan, which includes planned electricity demand, and the actual sales, which includes actual electricity demand, the retail electricity supplier will be charged an imbalance fee. You may be charged a fee called Therefore, reducing the difference between the sales plan and the actual sales is important for the profit of the retail electricity supplier. By suppressing the imbalance amount, it is possible to reduce the cost of procuring and adjusting electric power for the retail electricity supplier, which leads to an improvement in profitability of the retail electricity supplier. In addition, by suppressing the imbalance amount, it leads to the maintenance of the supply and demand balance in the power system.

Note that 30 minutes is an example of a predetermined period. The predetermined period is a period in units of demand time limit (demand time limit), and is, for example, 30 minutes, but is not limited thereto. Also, the method of creating a sales plan is not particularly limited, and any existing method may be used. Sales is also referred to as supply and sales planning is also referred to as demand planning or sales capacity planning.

A rough business flow of such a retail electricity supplier will be explained. First, we will explain the business flow of the day before selling electricity to consumers.

The retail electricity supplier acquires information on the FIT (Feed-in Tariff) power generation plan value for the next day from the general electricity transmission and distribution supplier (the transmission and distribution department of the former general electricity supplier) as necessary. The power generation plan value may be, for example, a plan value in units of 30 minutes. In addition, the electricity retailer formulates a sales plan for the next day, as necessary, based on the predicted value of the demand (electricity demand) of contracted consumers. The sales plan includes, for example, demand for 48 frames in units of 30 minutes for the next day (the current day).

Based on the sales plan and, for example, the amount of power directly procured from the power generation company, the retail electricity supplier determines whether or not there is a shortage of power for the next day, and if there is a shortage, JEPX (General Incorporated Association Japan Electric Power Exchange) to procure the shortfall in electricity through bidding on the wholesale electricity market (so-called spot market). A power generation business operator is a business operator that maintains and operates its own power generation facilities (electric facilities for power generation) and generates electricity for retail electricity business and the like. If an electricity retailer owns a power generation facility, i.e., if, for example, it is engaged in both the power generation business and the retail electricity business, the retail electricity business operator must make a sales plan and the amount of power generated by the power generation facility (power generation It may be determined whether or not there is a power shortage for the next day based on the predicted amount).

Then, the electricity retailer formulates a final sales plan for the next day, including the amount procured from the wholesale power market, and submits the formulated sales plan to the Organization for Cross-regional Coordination of Transmission Operators (OCCTO). The final sales plan for the next day is also described as the initial sales plan. The Organization for Cross-regional Coordination of Transmission Operators is an organization that formulates long-term policies and cross-regional grid development plans, reviews grid access operations, and so on.

The transaction price of electricity includes the transaction price between a power generation company and a retail electricity company and the transaction price when procured from the spot market. The transaction price between the power generation company and the retail electricity company is determined in a bilateral contract between the power generation company and the retail electricity company.

Also, the transaction price when procuring from the spot market is, for example, the contract price in the spot market, and is determined after 10:00 am on the previous day. For example, the contract price, that is, the market price in the wholesale power market, includes the system price (the price at the intersection of the nationwide sell-bid curve and the buy-bid curve) and the area price for each area ( The transaction price can be either price. The transaction price can also be said to be the price of electricity based on transactions between one or more retail electricity suppliers and one or more power generators via the wholesale electricity market. The spot market is an example of a day-ahead or day-ahead market. In addition, although the case of power shortage has been explained, if retail electricity companies have a surplus of power for the next day based on the sales plan and the amount of power directly procured from power generators, may bid and trade as a seller on

At least one of the transaction price between the power generator and the retail electricity supplier and the transaction price when procuring electricity from the spot market is an example of the electricity transaction price based on the electricity sales plan.

In the above, an example of procuring power from the spot market in JEPX has been described, but the spot market in JEPX is not limited to the wholesale power trading market.

Next, the work flow for the day when electric power is supplied to the consumer will be described.

The electricity retailer monitors whether or not electricity is being sold according to the sales plan established the day before (monitoring of simultaneous achievement of the same amount). If there is a shortage of electricity on the day, the retail electricity supplier will procure the electricity shortage on the day by bidding on the wholesale electricity market (so-called early market) at JEPX, and reschedule the sales plan as necessary. Make a plan and submit it to the Organization for Cross-regional Coordination of Transmission Operators. Re-planning is carried out, for example, when there is a large discrepancy between the sales plan formulated on the previous day and the sales on the current day. If there is a surplus, the seller may bid and trade in the early market as in the spot market. The early market is an example of the intraday market, and the trading price of electricity in the early market is an example of the market price of the wholesale electricity market.

In this way, the electricity retailer supplies power so as to suppress the occurrence of imbalance by procuring power for the day, but it is desirable to further suppress the occurrence of imbalance. In addition, although the case of shortage has been described, even if there is a surplus with respect to the planned value, the surplus will be handed over to suppress the occurrence of imbalance.

Here, among the electricity rate plans provided by the retail electricity supplier to consumers, there is a rate plan linked to the wholesale power market (Real Time Pricing). Among such rate plans linked to the wholesale electricity market, there is a metered rate plan in which the metered rate (electricity rate unit price) fluctuates every 30 minutes in conjunction with the market price of the wholesale power market, and the metered rate is calculated. . In the pay-as-you-go type rate plan, it is only possible to set a monotonous rate such that if the market price rises, the unit price of electricity rises, and there is little freedom in setting the rate. For example, in order to avoid imbalance (avoid penalty), it is not possible to set a detailed unit price of electricity that induces demand from consumers.

Therefore, the inventors of the present application have made intensive studies on an electricity rate unit price determination device, a controller, and an electricity rate unit price determination method that can determine an electricity rate unit price that can guide consumer demand, and have determined the electricity rate unit price determination method described below. A device, a controller and a method for determining the unit price of electricity were invented.

Hereinafter, each embodiment will be specifically described with reference to the drawings.

In addition, each embodiment described below shows a comprehensive or specific example. Numerical values, components, arrangement positions and connection forms of components, steps, order of steps, and the like shown in the following embodiments are examples and are not intended to limit the present invention. Further, among the constituent elements in the following embodiments, constituent elements not described in independent claims will be described as optional constituent elements.

Each figure is a schematic diagram and is not necessarily strictly illustrated. Moreover, in each figure, substantially the same configurations are denoted by the same reference numerals, and overlapping descriptions are omitted or simplified.

Also, in this specification, terms indicating the relationship between elements such as the same, numerical values, and numerical ranges are not expressions that express only strict meanings, but substantially equivalent ranges, for example, about several percent This expression means that a difference of (for example, about 10%) is also included.

(Embodiment 1)
An electricity bill unit price determination device according to the present embodiment will be described below with reference to FIGS. 1 to 5. FIG.

[1-1. Configuration of electricity rate unit price determination device]
First, configurations of an electricity bill unit price determination device and an electricity demand guidance system including the electricity bill unit price determination device according to the present embodiment will be described with reference to FIGS. 1 to 3. FIG. FIG. 1 is a block diagram showing a schematic configuration of a power demand guidance system 1 according to this embodiment. FIG. 2 is a block diagram showing the functional configuration of the electricity bill unit price determination device 10 according to the present embodiment. In the following, unless otherwise specified, the description will be made after the transaction price has been determined by bidding on the spot market.

As shown in FIG. 1 , the power demand guidance system 1 includes an electricity rate unit price determination device 10 , consumers 20 and 30 (hereinafter also referred to as consumers 20 and the like), and an external system 40 . In the following, the day (for example, the next day) on which electric power is supplied to the consumer 20 or the like is defined as the current day, and the day before the current day is defined as the previous day.

The electricity rate unit price determination device 10 is an information processing device that determines the price of electricity sold by the electricity retailer to the consumer 20 or the like based on information supplied from the external system 40 or the like. The electricity bill unit price determination device 10 is implemented by, for example, a server device or the like managed by an electricity retailer.

As shown in FIG. 2 , the electricity bill unit price determination device 10 includes a transaction price acquisition unit 11, an imbalance price prediction unit 12, an electricity sales amount prediction unit 13, an electricity bill unit price calculation unit 14, and a notification unit 15. Prepare. The electricity bill unit price determination device 10 is implemented by a computer or a smart phone including a processor, memory, and the like. Specifically, the electricity bill unit price determination device 10 operates according to the program stored in the memory by the processor, whereby the transaction price acquisition unit 11, the imbalance price prediction unit 12, the electricity sales amount prediction unit 13, the electricity bill unit price It functions as the calculation unit 14 and the notification unit 15 .

The transaction price acquisition unit 11 acquires an electricity transaction price based on a sales electricity amount plan between a retail electricity supplier and at least one of a wholesale electricity market and a power generator. The transaction price includes a price (for example, unit price) when a retail electricity supplier procures electricity from at least one of the wholesale electricity market and the power generator. The transaction price is, for example, the price for the power procured to supply the consumer 20 and the like on the day, and is acquired before the timing of notifying the consumer of the electricity rate unit price.

The transaction price acquisition unit 11 may acquire the transaction price from an external system 40 (for example, a server device that manages the transaction price). In this case, the transaction price acquisition unit 11 includes a communication circuit (communication module). Moreover, the transaction price acquisition part 11 may acquire a transaction price by the input from a user. In this case, the transaction price acquisition unit 11 includes a keyboard, buttons, touch panel, and the like. Further, when the transaction price is stored in a storage unit (not shown) of the electricity bill unit price determination device 10, the transaction price acquisition unit 11 may read the transaction price from the storage unit.

The imbalance price prediction unit 12 calculates an imbalance price prediction value based on the market price of the wholesale power market. The imbalance price prediction value is the power unit price (unit price of imbalance charge) at the time when there is a difference between the sales plan and the actual sales. The unit price of the imbalance charge is also called the imbalance charge unit price or the imbalance price. For example, the imbalance price prediction unit 12 may calculate both an imbalance price prediction value when the actual sales are greater than the sales plan and an imbalance price prediction value when the actual sales are less than the sales plan. , may be the same predicted value. In other words, the imbalance price prediction unit 12 predicts separately when the imbalance price for surplus and the imbalance price for shortage are different. For example, an imbalance price calculation formula or a correspondence relationship (fee curve) between an input value and an imbalance price is set in advance, and the imbalance price prediction unit 12, based on the calculation formula or correspondence relationship, Calculate the imbalance price prediction value for the day. The calculation formula for the imbalance price includes the market price of the wholesale electricity market.

Further, the upper limit of the imbalance price may be set according to the reserve power supply rate. The imbalance price prediction unit 12 may set the imbalance price prediction value to 0 yen or more, and may calculate such that the imbalance price prediction value for shortage≧the imbalance price prediction value for surplus. Also, the imbalance price prediction value is calculated, for example, every 30 minutes. The correspondence relationship may be, for example, one using a correction curve for when the supply and demand of electric power is tight.

Input values required for imbalance price prediction may be obtained from the outside or may be stored in advance. The market price of the wholesale power market is obtained from, for example, a server device or the like that manages the market price. The imbalance price prediction unit 12 functions as an acquisition unit that acquires the market price of the wholesale power market. In addition, the reserve power supply rate is, for example, a predicted value for each 30 minutes of the day, and is acquired from, for example, a server device that manages the reserve power rate or a general power transmission and distribution business operator. The imbalance price prediction unit 12 may function as an acquisition unit that acquires the power supply reserve margin. Further, the imbalance price prediction unit 12 may calculate the power supply reserve rate from the supply capacity and the demand prediction value for each area and every 30 minutes of the day.

The electric power sales amount prediction unit 13 calculates the electric power sales amount prediction value for the day based on the weather information and the actual electric power sales amount value. The electric power sales amount prediction unit 13 calculates the electric power sales amount prediction value for the current day based on the weather information for the past period and the current day, and the actual electric power sales amount value for the past period. In addition, the power sales amount prediction unit 13 functions as an acquisition unit that acquires weather information and actual power sales amount values. If the electricity sales amount actual value is stored in a storage unit (not shown) of the electricity rate unit price determination device 10, the electricity sales amount prediction unit 13 may read the transaction price from the storage unit.

The weather information includes weather records for past periods and weather forecasts for the current day. Weather information includes, but is not limited to, temperature and humidity, weather (sunny, cloudy, rainy, snowy, etc.), amount of insolation, and the like. Weather information is acquired from an external server device that manages weather information (for example, a server device managed by the Japan Meteorological Agency or a private company that provides weather information). The weather information may be, for example, information every three hours. Also, the weather information here is information acquired after a bid is made in the spot market and the transaction price is determined. In other words, the weather information here is information obtained after submitting the formulated sales plan to the Organization for Cross-regional Coordination of Transmission Operators on the previous day. The weather information for the second period here may have been updated (changed) from the weather information used when formulating the sales plan to be submitted to the Organization for Cross-regional Coordination of Transmission Operators. Weather information acquired after submitting the sales plan to the Organization for Cross-regional Coordination of Transmission Operators is also referred to as updated weather information. Further, the power sales amount prediction unit 13 may acquire event information instead of or in addition to the weather information, and calculate the power sales amount prediction value for the day based on the event information. The event information includes the content of the event to be held (festival, concert, etc.) and the time zone in which the event is held. The event information may also include calendar information such as public holidays. For example, if the consumer is a factory or office building, the calendar information includes information indicating working days, business days, and non-working days. Here, the acquired weather information or event information is weather information or event information associated with at least the area where the consumers with whom the electricity retailer has a contract exist.

Note that the sales power amount actual value is the actual value of the total power amount that has been sold (supplied) in the past to the consumers 20 or the like contracted by the electricity retailer.

For example, the electric power sales amount prediction unit 13 identifies a past date and time period that is the same weather information as the current day's weather information, and calculates the electric power sales performance for the identified past date and time period. The value may be used as the predicted power sales amount for the day. The power sales amount prediction unit 13 may calculate the power sales amount prediction value, for example, every 30 minutes. Note that the electric power sales amount prediction unit 13 only needs to be able to predict the electric power sales amount for the day, and is not limited to calculating the electric power sales amount prediction value.

In addition, the electric power sales amount prediction unit 13 may calculate the electric power sales amount prediction value for the current day based at least on the actual electric power sales amount value. For example, the electric power sales amount prediction unit 13 may calculate the electric power sales amount prediction value for the current day based on the past electric power sales actual value of the same month and day as the current day, or the most recent period (for example, It is also possible to calculate the predicted power sales amount for the current day based on the actual power sales amount value for the most recent one week). In this case, the average value of a plurality of past actual power sales values is used as the predicted power sales value for the day. Any one of the values may be used as the predicted power sales amount for the day.

The electricity rate unit price calculation unit 14 calculates an electricity sales amount difference (first difference) by subtracting the electricity sales amount forecast value from the sales plan, and based on the first difference, the transaction price, and the imbalance price forecast value , to calculate the unit price of electricity. The electricity bill unit price calculation unit 14 may calculate the electricity bill unit price every 30 minutes. The electricity bill unit price calculation unit 14 may calculate the same electricity bill unit price nationwide, may calculate the same electricity bill unit price for each area, or may calculate a different electricity bill unit price for each customer. You may The electricity bill unit price calculation unit 14 is characterized in that it determines the electricity bill unit price using the first difference and the imbalance price prediction value. The determination of the electricity rate unit price will be described later. Note that the first difference can also be said to be a predicted value of the imbalance amount.

The notification unit 15 notifies the consumer 20 or the like of the electricity bill unit price calculated by the electricity bill unit price calculation unit 14 by communication. The notification unit 15 includes, for example, a communication circuit (communication module). In addition, the notification unit 15 may publish the electricity bill unit price calculated by the electricity bill unit price calculating unit 14 on the website of the electricity retailer.

Moreover, the electricity bill unit price determination apparatus 10 may further include a user interface having at least one of a reception section and a display section. The reception unit is a device for inputting information for calculating the electricity bill unit price. Receives input of an updated value of an electricity rate unit price from an electric power company). The reception unit is a touch panel integrated with an operation unit such as a keyboard and buttons or a display, but may be a device that receives input by voice. The display unit is an example of a presentation unit that presents the electricity bill unit price, and displays the electricity bill unit price as an image. Note that the presentation unit may present the electricity bill unit price by voice or the like instead of the image or together with the image. Note that the reception unit and the presentation unit may be components of a remote terminal.

Referring back to FIG. 1, consumers 20 and the like are consumers who enter into a power contract with a retail electricity supplier and purchase electricity from the retail electricity supplier. Facilities such as the customer 20 are, for example, residences, but are not limited to these, and may be buildings in which at least loads are arranged, such as factories, condominiums, buildings, hospitals, and schools.

The consumer 20 and the like are connected to a power system 50 (commercial power system), and forward power flow from the power system 50 to the energy resource 21 such as the consumer 20 or reverse power flow from the energy resource 21 to the power system 50. It can be performed.

Although only the consumers 20 and 30 are shown in FIG. 1 for the sake of convenience, the number of consumers included in the power demand guidance system 1 is not particularly limited as long as it is one or more.

A consumer 20 has an energy resource 21 , a load 22 and a controller 23 .

The energy resource 21 is a distributed energy resource capable of at least one of generating and consuming energy (electric power) and obtaining a control command (message) from the controller 23 . The energy resource 21 is a power source (distributed power source) owned by the consumer 20, and includes, for example, a generator, a solar cell (power generation equipment), a storage battery (storage battery equipment), a storage battery for an electric vehicle, and a heat pump such as EcoCute (registered trademark). It is a device such as an electric water heater (hot water storage facility) that uses technology.

The load 22 is a device capable of consuming energy (electric power) and acquiring a control command (message) from the controller 23 . The load 22 is, for example, home appliances, factory equipment, measuring equipment, etc., but is not limited thereto.

The controller 23 is installed in the facility of the consumer 20 where the energy resource 21 and the load 22 are installed, and controls equipment installed in the facility, manages power consumption, and the like. The controller 23 is, for example, a HEMS (Home Energy Management System) controller having an energy management function, but may be a home controller, a gateway device, or a server device having an energy management function. Also, the communication between the controller 23 and the energy resource 21 and the load 22 may be wired communication or wireless communication.

The controller 23 is communicably connected to the electricity bill unit price determination device 10 . Communication between the controller 23 and the electricity bill unit price determination device 10 may be wireless communication or wired communication.

Controller 23 will be further described with reference to FIG. FIG. 3 is a block diagram showing the functional configuration of the controller 23 according to this embodiment. Although FIG. 3 illustrates an example in which the controller 23 outputs the control command to the energy resource 21 , the controller 23 may output the control command to the load 22 .

As shown in FIG. 3, the controller 23 includes a receiver 23a, a display 23b, and a controller 23c.

The receiving unit 23 a acquires the electricity bill unit price from the electricity bill unit price determination device 10 . The receiving unit 23a receives the electricity bill unit price, for example, by wireless communication. The receiving unit 23a is a component for the controller 23 to communicate with the electricity bill unit price determination device 10, and includes a communication circuit (communication module). The receiving unit 23a is an example of an acquiring unit that acquires the electricity bill unit price.

The display unit 23b displays the electricity bill unit price acquired by the reception unit 23a. That is, the display unit 23b visualizes the electricity bill unit price. The display unit 23b displays, for example, the electricity rate unit price for every 30 minutes on the current day on the previous day. This allows users such as the consumer 20 to know the unit price of electricity in advance.

The electricity bill unit price is, for example, a standard electricity bill unit price (to be described later), an electricity bill unit price obtained by subtracting a first amount (first unit price) from the standard electricity bill unit price, and a second amount (second unit price) from the standard electricity bill unit price. It may include three electricity bill unit prices of the added electricity bill unit price. The display unit 23b may display the three charge unit prices in different display modes. The display unit 23b is implemented by a display device such as a liquid crystal display.

The display unit 23b is an example of a presentation unit that the controller 23 has. The presentation unit may present the electricity bill unit price by voice or the like instead of the image or together with the image. Furthermore, the display unit 23b may display at least one of the control command from the control unit 23c and the data (for example, the amount of electricity stored) measured by the energy resource 21 or the like, in addition to the unit price of electricity.

Further, when the notification unit 15 of the electricity bill unit price determination device 10 publishes the electricity bill unit price on the website of the electricity retailer, the controller 23 may not have the display part 23b. In that case, a user such as the customer 20 browses the electricity rate unit price from a terminal such as a PC (Personal Computer), tablet, or smart phone.

The control unit 23 c is a control device that controls each component of the controller 23 . The control unit 23 c functions as a formulating unit that formulates a control command for controlling the energy resource 21 based on the unit electricity price acquired by the receiving unit 23 a and outputs the control command to the energy resource 21 . The control unit 23c, for example, formulates a control command according to the electricity bill unit price acquired by the receiving unit 23a. The control unit 23c controls to increase the power usage (for example, increase the amount of stored power) during times when the unit price of electricity is low, and to decrease the amount of power used (for example, increases the amount of stored power) during times when the unit price of electricity is high. reduce (discharge), operate the generator) control. In addition, the control unit 23c performs control to increase the power consumption (for example, increase the amount of electricity stored) during the period (30 minutes) in which the electricity bill unit price is the electricity bill unit price obtained by subtracting the first amount from the standard electricity bill unit price. , reduce the amount of electricity used during the period (30 minutes) in which the electricity rate unit price is the electricity rate unit price obtained by adding the second amount to the standard electricity rate unit price (for example, reduce the amount of stored electricity (discharge), operate the generator ) control.

In this manner, the control unit 23c may perform control for suppressing the occurrence of imbalance. Note that the control unit 23c is not limited to automatically controlling the energy resource 21 based on the electricity rate unit price acquired by the receiving unit 23a, and may be controlled based on an instruction from the user, for example. The controller 23c is an example of a second controller.

For example, the controller 23 may further have a reception section that receives input from the user. The reception unit receives an instruction regarding control of at least one of the energy resource 21 and the load 22 after the display unit 23b displays the electricity rate. The instruction includes, for example, an instruction to increase or decrease the amount of power usage every 30 minutes according to the unit price of electricity. The reception unit is, for example, a keyboard, buttons, or the like, or a touch panel integrated with the display unit 23b, but may be configured to receive input from the user by voice. The reception unit may also provide an API (Application Programming Interface) and receive input from a terminal such as a smartphone via the API. Thus, the control unit 23c may control the energy resource 21 based on the user's manual operation.

A consumer 30 has an energy resource 31 , a load 32 and a controller 33 . The functions of the energy resource 31, the load 32, and the controller 33 are the same as those of the energy resource 21, the load 22, and the controller 23, respectively, and description thereof is omitted.

The external system 40 is communicably connected to the electricity bill unit price determining device 10 and outputs various information used for determining the electricity unit price in the electricity bill unit price determining device 10 . The external system 40 includes, for example, one or more server devices that manage transaction prices, market prices in the wholesale electricity market, power supply reserve margins, weather information, and actual power sales figures. The external system 40 may manage at least one of the transaction price, the market price in the wholesale electricity market, the power supply reserve margin, the weather information, and the actual sales amount of electricity.

[1-2. Operation of Power Demand Guidance System]
Next, the operation of the power demand guidance system 1 configured as described above will be described with reference to FIGS. 4 and 5. FIG. FIG. 4 is a sequence diagram showing the operation (electricity rate unit price determination method) of the power demand guidance system 1 according to the present embodiment. Note that FIG. 4 shows an example in which the electricity bill unit price is output from the electricity bill unit price determination device 10 to the controller 23 of the consumer 20 , but the electricity bill unit price is also output to the controller 33 of the consumer 30 . The electricity bill unit price output to the controller 23 and the electricity bill unit price output to the controller 33 are, for example, the same price. Moreover, although the process shown in FIG. 4 is performed on the previous day, for example, it is not limited to this. For example, when the consumer does not perform the control in step S16, the electricity bill unit price may be calculated ex post when the electricity bill is settled, and the calculated electricity bill unit price may be notified.

As shown in FIG. 4, the electricity rate unit price determination device 10 acquires the transaction price from the external system 40 (S11), acquires the market price of the wholesale electricity market from the external system 40 (S12), Weather information is acquired (S13), and the actual power sales amount is acquired from the external system 40 (S14). The timing at which the electricity bill unit price determination device 10 acquires each piece of information is not particularly limited, and may be different timings. Also, the order in which the electricity bill unit price determination device 10 acquires each piece of information is not limited to this. In addition, the electricity rate unit price determination device 10 may further acquire the power supply reserve rate from the external system 40 in step S12.

Next, the electricity bill unit price determination device 10 calculates the electricity bill unit price of the customer 20 or the like based on the acquired transaction price, market price in the wholesale electricity market, weather information, and actual sales amount of electricity, and the controller 23 (S15).

Next, the controller 23 generates a control command for controlling the energy resource 21 based on the electricity rate unit price obtained in step S15, and outputs the control command to the energy resource 21 (S16). The control command output here includes the details of the control of the energy resource 21 on the current day. The control command may include, for example, control contents for 24 hours every 30 minutes. Also, the controller 23 may transmit a control command to the energy resource 21 each time the control contents change.

Next, the operation of the electricity bill unit price determination device 10 will be described with reference to FIG. FIG. 5 is a flowchart showing the operation of the electricity bill unit price determination device 10 (the electricity bill unit price determination method) according to the present embodiment. Each process shown in FIG. 5 is performed, for example, once a day (for example, the previous day), but the execution timing is not limited to the previous day, and the number of times is not limited to one.

As shown in FIG. 5, the transaction price acquisition unit 11 of the electricity rate unit price determination device 10 acquires the transaction price from the external system 40 (S101), and the imbalance price prediction unit 12 acquires the wholesale electricity market from the external system 40 (S102), and the electric power sales forecasting unit 13 obtains weather information and actual electric power sales from the external system 40 (S103 and S104). Step S101 corresponds to step S11 shown in FIG. 4, step S102 corresponds to step S12 shown in FIG. 4, step S103 corresponds to step S13 shown in FIG. 4, and step S104 corresponds to FIG. This corresponds to step S14. Although not shown, the sales plan may be submitted to the Cross-regional Electricity Coordination Promotion Organization before or after step S101.

Next, the imbalance price prediction unit 12 calculates an imbalance price prediction value based on the market price of the wholesale power market (S105). For example, the imbalance price prediction unit 12 calculates an imbalance price prediction value for each 30 minutes based on the prediction value of the market price of the wholesale power market for each 30 minutes of the day for each area. The imbalance price prediction unit 12 outputs the calculated imbalance price prediction value to the electricity bill unit price calculation unit 14 .

Further, in step S102, the imbalance price prediction unit 12, for example, when the value of the power supply reserve rate for each area and every 30 minutes of the day is acquired, based on the value of the power supply reserve rate , the predicted value of the upper limit of the imbalance price may be calculated.

Note that the imbalance price prediction unit 12 may further calculate the imbalance price prediction value based on at least one of the weather information and the actual imbalance price value. The actual imbalance price value is obtained from the external system 40 . The imbalance price prediction unit 12 may calculate the current imbalance price prediction value based on the past period and current day weather information, and the actual imbalance price value for the past period. Also, the imbalance price prediction unit 12 may calculate the error range of the imbalance price based on weather information and actual imbalance price values, for example.

Next, the electric power sales amount prediction unit 13 calculates an electric power sales amount prediction value based on the weather information and the actual electric power sales amount value (S106). The electricity sales amount prediction unit 13 outputs the calculated electricity sales amount prediction value to the electricity bill unit price calculation unit 14 . The weather information here is updated weather information. In other words, the predicted electric power amount output to the electricity rate unit price calculator 14 is a predicted value based on the updated weather information.

Next, the electricity bill unit price calculation unit 14 calculates the electricity bill unit price based on the transaction price, the imbalance price prediction value, and the sales electricity amount prediction value (S107). First, the electricity rate unit price calculation unit 14 subtracts the electricity sales forecast value based on the updated weather information from the original sales plan submitted to the Organization for Cross-regional Coordination of Transmission Operators, and the absolute value of the first difference exceeds a predetermined value. Determine whether or not In other words, the electricity bill unit price calculation unit 14 determines whether or not the absolute value of the first difference is within a predetermined range. When the absolute value of the first difference is equal to or less than a predetermined value, that is, when the first difference is within a predetermined range, the electricity bill unit price calculation unit 14 determines the electricity bill unit price as the reference electricity bill unit price. Specifically, the electricity bill unit price calculation unit 14 determines a reference electricity bill unit price calculated by adding a predetermined amount (for example, a wheeling charge, profit, etc.) to the transaction price as the electricity bill unit price. Note that the standard electricity rate unit price may be a unit price based on the transaction price, and the calculation method is not limited to this.

Further, when the first difference is larger than the upper limit value of the predetermined range, the electricity bill unit price calculating unit 14 calculates an amount obtained by subtracting the first amount from the reference electricity bill unit price as the electricity bill unit price ((Formula 1 below) ).

Unit price of electricity = Base unit price of electricity - First amount (Formula 1)

The electricity bill unit price calculation unit 14 calculates the first amount of money according to the imbalance price prediction value. The electricity bill unit price calculation unit 14 calculates the first amount of money, for example, such that the larger the imbalance price prediction value, the larger the amount of money. Moreover, the electricity bill unit price calculation unit 14 may further calculate the first amount of money according to the first difference. The electricity bill unit price calculation unit 14 lowers the electricity bill unit price when the first difference is greater than the upper limit value of the predetermined range below the standard electricity bill unit price according to at least one of the imbalance price prediction value and the first difference. may For example, the electricity bill unit price calculation unit 14 may calculate the first amount of money so that the larger the at least one of them, the larger the amount of money.

Further, when the first difference is smaller than the lower limit value of the predetermined range, the electricity bill unit price calculation unit 14 calculates an amount obtained by adding the second amount to the standard electricity bill unit price as the electricity bill unit price ((Formula 2) below ).

Unit price of electricity = Base unit price of electricity + Second amount (Equation 2)

The electricity bill unit price calculation unit 14 calculates a second amount of money according to the imbalance price prediction value. The electricity bill unit price calculation unit 14 calculates the second amount of money, for example, such that the larger the imbalance price prediction value, the larger the amount of money. Moreover, the electricity bill unit price calculation unit 14 may further calculate the second amount of money according to the first difference. The electricity bill unit price calculation unit 14 increases the electricity bill unit price when the first difference is smaller than the lower limit value of the predetermined range, above the standard electricity bill unit price according to at least one of the imbalance price prediction value and the first difference. may For example, the electricity bill unit price calculation unit 14 may calculate the second amount of money so that the larger the at least one of them, the larger the amount of money.

The first amount and the second amount may be the same amount, or may be different amounts. Further, when the first difference is smaller than the lower limit value of the predetermined range, the electricity bill unit price becomes higher than the standard electricity bill unit price according to (Formula 2). may be returned to the consumer 20 or the like.

In this way, when the first difference is larger than the upper limit value of the predetermined range, that is, when the plan is larger than the forecast, the electricity bill unit price calculation unit 14 sets the electricity bill unit price to be lower than the reference electricity bill unit price, is smaller than the lower limit of the predetermined range, that is, when the forecast is larger than the plan, the electricity bill unit price is set higher than the standard electricity bill unit price. In this way, the electricity bill unit price calculation unit 14 can finely set the electricity bill unit price.

The electricity bill unit price calculation unit 14 calculates the electricity bill unit price every 30 minutes. The electricity bill unit price calculation unit 14 determines whether or not all the electricity bill unit prices for 24 hours have been calculated every 30 minutes. 15, and if all the electricity bill unit prices have not been calculated, the process of step S107 is continued.

Next, the notification unit 15 notifies the consumers 20 and the like of the unit price of electricity (S108). The notification unit 15 notifies the consumer 20 or the like of the electricity bill unit price output from the electricity bill unit price calculation unit 14 . Note that, when the updated value of the electricity bill unit price is input from the administrator or the like via the reception unit, the notification unit 15 notifies the consumer 20 or the like of the updated value of the electricity bill unit price. The notification unit 15 notifies the customer 20 or the like of the updated value of the electricity bill unit price instead of the electricity bill unit price output from the electricity bill unit price calculation unit 14 .

As a result, each of the consumers 20 and the like is notified of the electricity rate unit price corresponding to the sales power amount difference (first difference). Taking the consumer 20 as an example, when the user sees an electricity rate unit price lower than the reference electricity rate unit price displayed on the display unit 23b of the controller 23, the user is encouraged to use more energy resources. 21 may be controlled. That is, the electricity bill unit price calculation unit 14 can indirectly prompt the user to use more electricity. Also, when the user sees an electricity bill unit price higher than the reference electricity bill unit price displayed on the display unit 23b of the controller 23, the user may control the energy resource 21 to refrain from using electricity. In other words, the electricity bill unit price calculation unit 14 can indirectly prompt the user to curb the use of electricity.

[1-3. effects, etc.]
As described above, the electricity bill unit price determination device 10 according to the present embodiment determines the price of electricity sold to consumers 20 by an electricity retailer (an example of an electricity retailer). It is a unit price determination device. An electricity rate unit price determination device 10 is a transaction price for acquiring an electricity transaction price based on a sales plan (an example of an electricity sales plan) between at least one of a retail electricity business operator, a wholesale electricity trading market, and a power generation business operator. An acquisition unit 11, an imbalance price prediction unit 12 that calculates an imbalance price prediction value based on the market price of the wholesale electricity market, and an electricity sales amount calculation value that calculates the electricity sales amount prediction value based on the electricity sales actual value. The amount prediction unit 13 calculates the difference between the electricity sales amount plan and the electricity sales amount prediction value, and calculates the electricity sales amount difference, the transaction price, and the imbalance price prediction value based on the electricity sales amount difference. It includes an electricity bill unit price calculation unit 14 that calculates the electricity bill unit price, and a notification unit 15 that notifies the consumer 20 and the like of the electricity bill unit price.

As a result, the electricity bill unit price determination device 10 can inform users such as the consumer 20 of the calculated electricity bill unit price, that is, the electricity bill unit price according to the difference in the amount of electricity sold. For example, when a high electricity rate unit price is displayed at the consumer 20 or the like, it is expected that the user will refrain from consuming power or control a device (for example, the energy resource 21) to discharge power. When the unit price is displayed, it is expected that the user will control the device to increase power consumption or store power. Therefore, according to the present embodiment, power demand can be indirectly induced by the electricity bill unit price, so that the electricity bill unit price determination device 10 capable of guiding the electricity demand of the consumer 20 or the like can be realized. . By guiding the power demand of the consumer 20 or the like, it is possible to avoid the occurrence of imbalance.

In addition, the electricity bill unit price calculation unit 14 sets the electricity bill unit price as the base electricity bill unit price when the sales electricity amount difference is within a predetermined range, is lower than the standard electricity rate unit price according to at least one of the imbalance price forecast value and the difference in electricity sales amount, and if the difference in electricity sales amount is less than the lower limit of the predetermined range, the electricity rate unit price is set to the imbalance price forecast value and the difference in electricity sales amount. The unit price of electricity is set higher than the standard electricity rate according to at least one of the differences in the amount of electricity sold.

Thereby, when it is predicted that an imbalance will occur, the electricity bill unit price determination device 10 can more reliably guide the power demand of the consumer 20 or the like so as to suppress the occurrence of the imbalance.

Further, a display unit (an example of a first presentation unit) for presenting the electricity bill unit price calculated by the electricity bill unit price calculation unit 14 and a reception unit for receiving an input of an updated value of the electricity bill unit price are provided. notifies the customer 20 of the updated value of the electricity rate unit price input to the reception unit.

As a result, the administrator of the electricity bill unit price determination device 10 (for example, the operator of the electricity retailer) can correct the electricity bill unit price. By appropriately correcting the electricity bill unit price according to various situations, the administrator can notify the consumer 20 or the like of the electricity bill unit price in which the occurrence of imbalance is further suppressed.

Further, the imbalance price prediction unit 12 further calculates an imbalance price prediction value based on at least one of the actual imbalance price value and the weather information.

As a result, the predicted imbalance price is calculated using at least one of the actual imbalance price and the weather information, so it is expected that the prediction accuracy of the predicted imbalance price will be improved.

Moreover, as described above, the controller 23 according to the present embodiment is a controller that controls the energy resource 21 installed in the consumer 20 . It includes a receiving unit 23a (an example of an acquisition unit) that acquires the electricity bill unit price calculated by the electricity bill unit price determination device 10, and a display unit 23b (an example of a second presentation unit) that displays the electricity bill unit price.

As a result, the controller 23 can inform users such as the consumer 20 of the electricity bill unit price calculated by the electricity bill unit price determination device 10, that is, the electricity bill unit price corresponding to the difference in the amount of electricity sold. For example, when a high electricity bill unit price is displayed, the user is expected to refrain from power consumption or control the energy resource 21 to discharge electricity, and when a low electricity bill unit price is displayed, the user It is expected to increase power consumption or control energy resources 21 to store power. Therefore, according to the present embodiment, the controller 23 capable of guiding the power demand of the consumer 20 or the like can be realized. By guiding the power demand of the consumer 20 or the like, it is possible to avoid the occurrence of imbalance.

Further, a control unit 23 c is provided that formulates a first control command for the energy resource 21 from the electricity rate unit price and outputs the formulated first control command to the energy resource 21 .

As a result, the controller 23 can automatically control the energy resource 21 according to the electricity bill unit price calculated by the electricity bill unit price determination device 10, that is, the electricity bill unit price corresponding to the difference in the amount of electricity sold. For example, when a high unit price of electricity is obtained, the controller 23 controls the energy resource 21 to refrain from power consumption or discharge power, and when a low unit price of electricity is obtained, the controller 23 increases power consumption, or , the energy resource 21 can be controlled to store power. Therefore, the controller 23 can control the energy resource 21 so that imbalance does not occur even if the user is absent. It should be noted that causing the controller 23 to control the energy resource 21 based on the electricity bill unit price by the electricity bill unit price determination device 10 is included in guiding the power demand of the consumer 20 and the like.

Further, as described above, the electricity bill unit price determination method according to the present embodiment is an electricity bill unit price determination method for determining the price of electricity sold to consumers 20 and the like by an electricity retailer. The electricity rate unit price determination method includes a step of obtaining a transaction price of electricity based on a sales electricity plan between a retail electricity supplier and at least one of the wholesale electricity trading market and a power generation supplier (S101); a step of calculating an imbalance price prediction value based on the market price of the market (S105); a step of calculating an electric power sales prediction value based on the electric power sales actual value (S106); and an electric power sales plan; a step (S107) of calculating an electricity sales amount difference, which is the difference from the electricity sales amount forecast value, and calculating an electricity rate unit price based on the electricity sales amount difference, the transaction price, and the imbalance price forecast value; and a step of notifying the consumer 20 of the electricity rate unit price (S108).

Accordingly, the same effect as that of the electricity bill unit price determination device 10 is obtained.

(Embodiment 2)
The electricity bill unit price determination device according to the present embodiment will be described below with reference to FIG. In the following, the description will focus on the differences from the first embodiment, and the same reference numerals will be given to the configurations that are substantially the same as in the first embodiment, and duplicate descriptions will be omitted or simplified. .

[2-1. Configuration of electricity rate unit price determination device]
The configuration of the electricity bill unit price determination device according to the present embodiment will be described with reference to FIG. FIG. 6 is a block diagram showing the functional configuration of the electricity bill unit price determination device 110 according to the present embodiment. The electricity bill unit price determination device 110 according to the present embodiment includes the controllable amount acquisition unit 16, and calculates the electricity bill unit price using the controllable amount of the energy resource. It differs from the decision device 10 .

In addition, in the present embodiment, a case will be described in which electricity rate unit price determining apparatus 110 can control the energy resource of at least one consumer among consumers 20 and the like. The at least one consumer is a controlled consumer having an energy resource that can be directly controlled by the electricity bill unit price determination device 110 . An example in which the consumer to be controlled is the consumer 20 will be described below. In this case, the energy resource 21 of the consumer 20 is configured to be able to acquire a control command (message) from the electricity rate unit price determination device 110 .

As shown in FIG. 6 , the electricity bill unit price determination device 110 includes a controllable amount acquisition unit 16 in addition to the electricity bill unit price determination device 10 according to the first embodiment.

The controllable amount acquisition unit 16 acquires the controllable amount of the energy resource 21 of the consumer 20 who is the consumer to be controlled. The controllable amount is the amount of electric power that can be controlled by the electricity rate unit price determination device 110 for the energy resource 21 to generate or consume electric power. If the energy resource 21 has a power storage function, the controllable amount may be the amount of power that can be controlled for charging or discharging. The upper limit value of the controllable amount is set in advance in a contract between the electricity retailer and the consumer 20, for example. The controllable amount acquisition unit 16 may acquire the upper limit value of the controllable amount from the external system 40, for example. For example, the controllable amount acquisition unit 16 may acquire the upper limit of the controllable amount of the energy resource 21 of the consumer 20 from a server device that manages the upper limit of the controllable amount. The upper limit of the controllable amount may be set every 30 minutes.

In addition, the controllable amount acquisition unit 16 may acquire, as the controllable amount, the amount of charge/discharge of the energy resource 21 on the current day every 30 minutes. The chargeable/dischargeable amount of the energy resource 21 is calculated based on the charged amount or the available capacity. The chargeable/dischargeable amount of the energy resource 21 may be calculated by any existing calculation method. Further, when the energy resource 21 is a heat pump water heater, the controllable amount acquiring unit 16 calculates the controllable amount based on the hot water output amount or the hot water storage amount.

The controllable amount acquisition unit 16 may acquire the controllable amount by the time the process of step S107 shown in FIG. 5 of the first embodiment is performed, for example. The controllable amount acquisition unit 16 outputs the acquired controllable amount to the electricity bill unit price calculation unit 14 .

Note that the controllable amount acquisition unit 16 is not limited to acquiring the controllable amount from the outside, and the catalog value (maximum capacity) of the energy resource 21 and the state of the energy resource 21 on the day (for example, free capacity). The controllable amount may be obtained by calculating the controllable amount based on the predicted value.

The electricity bill unit price calculating unit 14 calculates the electricity bill unit price based on the controllable amount acquired by the controllable amount acquiring unit 16 in addition to the transaction price, imbalance price prediction value, and sales power amount prediction value. The electricity bill unit price calculation unit 14 calculates the electricity bill unit price in accordance with the second difference between the sold electric power amount difference (first difference) and the controllable amount. The second difference is an imbalance that occurs even when the electricity bill unit price determination device 110 controls the energy resource 21 .

When the plan is larger than the forecast, the electricity rate unit price calculation unit 14 calculates a value obtained by subtracting the storable amount included in the controllable amount from the difference in the amount of electricity sold (for example, the available capacity, the amount that can be boiled), and calculates the second difference. Calculate as Further, when the prediction is larger than the plan, the electricity rate unit price calculation unit 14 subtracts the suppliable amount included in the controllable amount from the sales power amount difference, and calculates the second difference as Calculate as Then, the electricity bill unit price calculation unit 14 calculates the electricity bill unit price by using the second difference instead of the sales electricity amount difference in the first embodiment.

Further, the electricity bill unit price calculation unit 14 may calculate the electricity bill unit price according to the magnitude of the controllable amount. For example, the unit price of electricity for the consumer 20, which is the controlled consumer, may be lower than the unit price for the consumer 30, which is the non-controlled consumer. In addition, an incentive may be paid for the controllable amount in addition to the unit price of electricity.

Note that the controllable amount may be a controllable amount when a device external to the consumer 20 other than the electricity rate unit price determination device 110 controls the energy resource 21 of the consumer 20 . That is, the electricity bill unit price determination device 110 does not have to have a configuration for generating a control command for controlling the energy resource 21 .

[2-2. effects, etc.]
As described above, consumer 20 according to the present embodiment has energy resource 21 that can be controlled by electricity rate unit price determination device 110 . Then, the electricity bill unit price determination device 110 according to the present embodiment further includes a controllable amount acquisition unit 16 that obtains the controllable amount of the energy resource 21, and the electricity bill unit price calculation unit 14 further includes a controllable amount Based on this, the unit price of electricity is calculated.

As a result, the electricity bill unit price determination device 110 can calculate the electricity bill unit price that can suppress the occurrence of imbalance based on the controllable amount of the directly controllable energy resource 21 as well. The electricity bill unit price determination device 110 can set the electricity bill unit price in more detail, for example. Therefore, the electricity bill unit price determination device 110 can further suppress the occurrence of imbalance.

(Embodiment 3)
The electricity bill unit price determination device according to the present embodiment will be described below with reference to FIGS. 7 to 9. FIG. In the following, the description will focus on the differences from the second embodiment, and the same reference numerals will be given to the configurations that are substantially the same as those of the second embodiment, and duplicate descriptions will be omitted or simplified. .

[3-1. Configuration of electricity rate unit price determination device]
First, the configuration of the electricity bill unit price determination device according to the present embodiment will be described with reference to FIG. FIG. 7 is a block diagram showing the functional configuration of the electricity bill unit price determination device 210 according to the present embodiment. An electricity bill unit price determining apparatus 210 according to the present embodiment is different from the electricity bill unit price determining apparatus 110 according to Embodiment 2 in that it includes a control unit 17 and generates a control command for controlling energy resources. .

In addition, in the present embodiment, the electricity rate unit price determination device 210 can directly control the energy resource of at least one consumer among the consumers 20 and the like, and a consumer other than the at least one consumer can A case will be described where direct control of the energy resources possessed is not possible. The at least one consumer is a controlled consumer having an energy resource that can be directly controlled by the electricity bill unit price determination device 210, and the consumers other than the at least one electricity bill unit price determination device 210 are directly controlled by the electricity bill unit price determination device 210. It is an uncontrolled consumer who does not have controllable energy resources.

As shown in FIG. 7, the electricity bill unit price determining device 210 includes a control unit 17 in addition to the electricity bill unit price determining device 110 according to the second embodiment.

In the following, an example will be described in which the controlled consumer is the consumer 20 and the non-controlled consumer is the consumer 30 . In this case, the energy resource 21 of the consumer 20 is configured to be able to obtain a control command from the electricity bill unit price determination device 210, and the energy resource 31 of the consumer 30 obtains the control command from the electricity bill unit price determination device 210. Impossibly constructed. Further, in the present embodiment, the controllable amount acquisition unit 16 also outputs the controllable amount to the control unit 17 .

The control unit 17 formulates a control command for controlling the energy resource 21 of the consumer 20 based on the controllable amount acquired from the controllable amount acquisition unit 16 . For example, the control unit 17 formulates a control command based on the smaller one of the power sales difference and the controllable amount in order to suppress the imbalance. For example, the control unit 17 may formulate a control command for causing the energy resource 21 to store or discharge a predetermined amount of electricity, or formulate a control command for shifting the time period for storing or discharging electricity. good too. The control unit 17 formulates a control command every 30 minutes. The controller 17 is an example of a first controller.

Note that, for example, when there are a plurality of consumers to be controlled, the control unit 17 formulates a control command for each of the plurality of consumers to be controlled.

The notification unit 15 outputs a control command to the controller 23 of the consumer 20 in addition to the electricity bill unit price.

[3-2. Operation of Power Demand Guidance System]
Next, the operation of the power demand guidance system including the electricity bill unit price determination device 210 configured as described above will be described with reference to FIGS. 8 and 9. FIG. FIG. 8 is a sequence diagram showing a first example of the operation (electricity rate unit price determination method) of the power demand guidance system according to the present embodiment. In addition, in FIG. 8, the process after the electricity-rate unit price determination apparatus 210 calculates the electricity-rate unit price is shown.

As shown in FIG. 8, the notification unit 15 of the electricity bill unit price determination device 210 outputs the electricity bill unit price to each of the consumer 20, which is the controlled consumer, and the consumer 30, which is the non-controlled consumer (S21 and S22). The notification unit 15 outputs a common electricity bill unit price to each of the controllers 23 and 33 .

Next, the notification unit 15 outputs the control command formulated by the control unit 17 to the controller 23 (S23). For example, the notification unit 15 outputs control commands for 24 hours every 30 minutes to the controller 23 within the previous day, but may output at least part of the control commands to the controller 23 on the current day. The notification unit 15 may, for example, notify the controllers 23 and 33 of the electricity rate unit price before outputting the control command. In other words, the notification unit 15 may output the control command to the controller 23 after notification of the electricity bill unit price.

The receiving unit 23a of the controller 23 receives a control command for controlling the energy resource 21 of the consumer 20 within the previous day.

The processing up to step S23 is performed, for example, the day before. As a result, the consumer 20 or the like can be notified of the electricity rate unit price within the previous day, so that the consumer 20 or the like can consider the power usage for the day. Note that the processing up to step S23 is not limited to being performed on the previous day.

For example, when the absolute value of the first difference or the second difference is within a predetermined range, the control unit 17 does not need to formulate a control command. In addition, for example, when the first difference or the second difference is larger than the upper limit value of the predetermined range, the control unit 17 reduces the energy resources compared to when the absolute value of the first difference or the second difference is within the predetermined range. A control command may be formulated to increase the demand for 21 and a control command may be formulated to reduce the demand on the energy resource 21 compared to when the absolute value of the first difference or the second difference is less than the lower limit of the predetermined range.

Next, the control unit 23c of the controller 23 formulates a control command for the energy resource 21 based on the control command from the electricity rate unit price determination device 210, and outputs the formulated control command to the energy resource 21 (S24). The control unit 23c, for example, the control command (first control command) formulated by the control unit 23c based on the electricity bill unit price from the electricity bill unit price determination device 210, the electricity bill unit price determination device 210 (an example of an external device ) to formulate a control command (third control command) to be output to the energy resource 21 based on the control command (second control command) from ). The control unit 23c may formulate a third control command that satisfies the contents of the first control command and the second control command. You may formulate a 3rd control command by selecting either. Further, the control unit 23c may formulate the third control command giving priority to the second control command among the first control command and the second control command. For example, the control unit 23c may formulate the third control command so as to execute the second control command during a time period when both the first control command and the second control command are present.

The control unit 33c of the controller 33 formulates a control command for the energy resource 31 based on the electricity bill unit price from the electricity bill unit price determination device 210, and outputs the formulated control command to the energy resource 31 (S25).

The display unit 23b of the controller 23 may display at least one of the control command received in step S23 and the control command transmitted in step S24. Also, the display unit 33b of the controller 33 may display the control command transmitted in step S25.

As a result, even when the consumers 20 and the like include controlled consumers and non-controlled consumers, the electricity rate unit price determination device 210 indirectly It is possible to induce power demand to

In addition, advanced energy management technology that utilizes the Internet of Things (IoT) is used to aggregate the energy resources of one or more consumers, and by performing remote and integrated control, it is possible to adjust the balance of power supply and demand. A mechanism, a concept, etc., called a "virtual power plant: virtual power plant (VPP)" has been proposed, which utilizes and functions as if it were a single power plant.

In an energy control system using such a mechanism called VPP, an aggregator (specified wholesaler) is provided for integrated control of the energy resources of consumers. The aggregator outputs a control command for operating the energy resource of the consumer under the control condition corresponding to the power service in which the consumer participates, thereby operating the energy resource under the desired control condition.

The consumer 20 or the like in the present embodiment may be a consumer included in an energy control system using such a mechanism called VPP. In this case, the above-described aggregator intervenes between the consumer 20 and the like and the electricity rate unit price determination device 210 . The operation of the power demand guidance system in this case will be described with reference to FIG. FIG. 9 is a sequence diagram showing a second example of the operation (electricity rate unit price determination method) of the power demand guidance system according to the present embodiment. Note that FIG. 9 omits the process of calculating the electricity bill unit price by the electricity bill unit price determination device 210 . Also, the server device managed by the aggregator 60 is included in the external system 40, for example.

As shown in FIG. 9, the aggregator 60 outputs the controllable amount to the electricity bill unit price determination device 210 (S31). The controllable amount includes, for example, controllable power amounts for 24 hours every 30 minutes on the current day. The timing at which the aggregator 60 outputs the controllable amount is not particularly limited. Thereby, the electricity bill unit price determination device 210 can calculate the electricity bill unit price according to the state of the energy resource 21 .

The electricity bill unit price determination device 210 calculates the electricity bill unit price using the controllable amount, and outputs the calculated electricity bill unit price to the controllers 23 and 33 (S21 and S22).

Next, the notification unit 15 of the electricity bill unit price determination device 210 outputs the control command formulated by the control unit 17 to the aggregator 60 (S32). For example, the notification unit 15 outputs control commands for 24 hours every 30 minutes on the current day to the aggregator 60 during the previous day, but may output control commands for at least part of the time period to the aggregator 60 on the current day. . The notification unit 15 may notify the controllers 23 and 33 of the electricity rate unit price before outputting the control command to the aggregator 60, for example. In other words, the notification unit 15 may output the control command to the aggregator 60 after notification of the electricity bill unit price.

Next, the aggregator 60 outputs a control command to the controller 23 based on the control command from the electricity bill unit price determination device 210 (S33). The aggregator 60 may transfer the control command from the electricity bill unit price determination device 210 to the controller 23, and add power services such as peak cut and demand response (DR) to the control command from the electricity bill unit price determination device 210. A new control command may be formulated, and the newly formulated control command may be output to the controller 23 .

The processes up to steps S31, S21, S22, S32, and S33 are performed, for example, the day before, but are not limited to this.

Next, the control unit 23c of the controller 23 formulates a control command for the energy resource 21 based on the control command from the aggregator 60, and outputs the formulated control command to the energy resource 21 (S34). The control unit 23c receives, for example, a control command (first control command) formulated by the control unit 23c based on the electricity bill unit price from the electricity bill unit price determination device 210 and a control command (fourth control command) from the aggregator 60. Based on and, a control command (third control command) to be output to the energy resource 21 is formulated. The controller 23c may formulate a third control command that satisfies the contents of the first control command and the fourth control command. You may formulate a 3rd control command by selecting either. Further, the control unit 23c may formulate the third control command by prioritizing the fourth control command among the first control command and the fourth control command. For example, the control unit 23c may formulate the third control command so as to execute the fourth control command during a time period when both the first control command and the fourth control command are present.

In addition, since the consumer 30 is a non-controlled consumer and the aggregator 60 cannot be controlled, the control unit 33c of the controller 33 formulates a control command for the energy resource 31 based on the electricity bill unit price from the electricity bill unit price determination device 210. and outputs the determined control command to the energy resource 31 (S25).

Steps S34 and S25 are performed on the day, for example, but may be performed on the previous day.

The display unit 23b of the controller 23 may display at least one of the control command received in step S33 and the control command transmitted in step S34.

As shown in FIGS. 8 and 9 , the notification unit 15 may notify at least one of the aggregator 60 and the customer 20 of the control command formulated by the control unit 17 . In addition, by controlling the energy resource 21 based on the control command from the electricity rate unit price determination device 210 or the aggregator 60, the consumer 20 can obtain incentives, for example.

[3-3. effects, etc.]
As described above, electricity bill unit price determination device 210 according to the present embodiment further includes control unit 17 that formulates a control command for controlling energy resource 21 . Notification unit 15 then notifies at least one of aggregator 60 managing energy resource 21 and consumer 20 of the control command.

Accordingly, since the electricity rate unit price determination device 210 has a configuration capable of controlling the energy resource 21, it can directly control the energy resource 21 according to the controllable amount and the difference in the amount of electricity to be sold. That is, the electricity bill unit price determination device 210 can directly control the energy resource 21 in order to suppress the occurrence of imbalance. Therefore, the electricity bill unit price determination device 210 can further suppress the occurrence of imbalance.

Further, the notification unit 15 notifies at least one of the aggregator 60 and the consumer 20 of the control command after the notification of the electricity bill unit price.

As a result, the notification unit 15 of the electricity bill unit price determination device 210 notifies the electricity bill unit price first, so that the user such as the consumer 20 can be notified of the electricity bill unit price early. For example, the unit price of electricity can be notified to the user before the control based on the control command formulated by the control unit 17 is started.

In addition, as described above, consumer 20 according to the present embodiment has energy resource 21 that can be controlled by electricity rate unit price determination device 210 (an example of an external device). Then, the receiving unit 23a (an example of the obtaining unit) of the controller 23 according to the present embodiment further obtains the second control command for controlling the energy resource 21 from the electricity rate unit price determination device 210, and the control unit 23c further formulates a first control directive based on the second control directive.

As a result, the control unit 23c can formulate a control command for the energy resource 21 based on the control command formulated from the electricity bill unit price and the control command formulated by the electricity bill unit price determination device 210. It is possible to formulate a control command that can suppress the occurrence of

(Other embodiments)
Although the electricity bill unit price determination device and the like according to one or more aspects have been described above based on each embodiment, the present invention is not limited to each embodiment. As long as it does not deviate from the spirit of the present invention, the present invention may include various modifications that can be made by those skilled in the art, and forms constructed by combining the components of different embodiments. .

For example, in each of the above-described embodiments, the controller has a display unit and an example in which the electricity bill unit price is displayed has been described. You may make it display on the display part of a terminal. The mobile terminal is, for example, a smart phone, a tablet terminal, or the like, but is not limited thereto.

Further, in each of the above embodiments, the electricity bill unit price calculation unit has explained an example of calculating the electricity bill unit price using (Formula 1) and (Formula 2), but (Formula 1) and (Formula 2) are It is an illustration, and it is not limited to using these calculation formulas.

Further, the control unit in each of the above embodiments may generate proposal information for guiding power supply and demand to the consumer based on the controllable amount instead of or together with the control command. The proposal information is information for controlling energy resources. The control unit may generate proposal information including, for example, charging an energy resource by a predetermined amount during a certain period of time or discharging an energy resource by a predetermined amount during a certain period of time. The notification unit may associate the electricity bill unit price based on the controllable amount with the proposal information based on the controllable amount and notify the consumer of the information. Then, the display unit of the controller may display the electricity rate unit price and the proposal information side by side.

Further, in each of the above embodiments, when the first difference between the sales plan and the actual predicted value is outside the predetermined range, the electricity bill unit price calculation unit calculates the electricity bill based on the standard electricity bill unit price according to the transaction price An example of calculating the unit price, that is, calculating the electricity bill unit price in conjunction with the transaction price has been described, but the method is not limited to calculating the electricity bill unit price in conjunction with the transaction price. When the first difference is out of the predetermined range, the electricity bill unit price calculation unit may calculate the electricity bill unit price by, for example, performing a predetermined calculation on the imbalance price prediction value. The predetermined calculation may be, for example, adding a predetermined amount of money according to the wheeling charge, profit, or the like. In this way, the electricity bill unit price calculation unit calculates the electricity bill unit price in conjunction with the transaction price when the first difference is within the predetermined range, and calculates the electricity bill unit price when the first difference is outside the predetermined range. You may calculate an electricity bill unit price without interlocking|linking. In addition, the transaction price may be not only the spot market price and the negotiated contract price, but also the early market price.

Further, the power sales amount prediction unit in each of the above embodiments may predict the power sales amount using, for example, a machine learning model. For example, the electric power sales prediction unit may predict future electric power sales prediction values using a machine learning model that is learned in advance using actual electric power sales values for a certain past period and weather information.

Also, the consumer in each of the above embodiments should have at least one of the energy resource and the load. Also, the number of energy resources and loads owned by the consumer is not particularly limited, and may be plural.

In addition, although the customer in each of the above embodiments has been described as having a controller, the present invention is not limited to this, and the customer may not have a controller. The function of the controller may be possessed by, for example, an electricity rate unit price determination device. In this case, the electricity bill unit price determination device may directly output the control command to the controller.

Further, the predicted value of the market price of the wholesale power market acquired by the imbalance price prediction unit in each of the above embodiments is, for example, a price predicted based on the actual transaction price in market transactions of the wholesale power market. may The predicted value of the market price in the wholesale power market may be, for example, a price calculated based on the transaction price acquired by the transaction price acquisition unit 11 . Also, the predicted value of the market price in the wholesale power trading market may be, for example, the average value, median value, mode value, maximum value, or minimum value of past actual transaction prices. Also, the predicted value of the market price in the wholesale power trading market may be, for example, a price predicted based on actual transaction prices and weather information. Also, the imbalance price prediction unit may predict the predicted value of the market price in the wholesale power trading market based on at least the actual transaction price. In this case, the imbalance price prediction unit acquires the past transaction performance price of the market price of the wholesale power market from the outside.

Further, the market price in the wholesale power market acquired by the imbalance price prediction unit in each of the above embodiments may be the actual value of the market price in the wholesale power market.

Further, the communication standard used for communication of each device in each of the above embodiments is not particularly limited, and any existing communication standard may be used.

Further, in each of the above embodiments, each component may be implemented by dedicated hardware or by executing a software program suitable for each component. Each component may be realized by reading and executing a software program recorded in a recording medium such as a hard disk or a semiconductor memory by a program execution unit such as a CPU or processor.

Also, the order in which each step in the flowchart is executed is for illustrative purposes in order to specifically describe the present invention, and orders other than the above may be used. Also, some of the steps may be executed concurrently (in parallel) with other steps, or some of the steps may not be executed.

In addition, these general or specific aspects may be implemented in a system, method, integrated circuit, computer program, or non-transitory recording medium such as a computer-readable CD-ROM. It may be implemented in any combination of circuits, computer programs or recording media. The program may be pre-stored in a recording medium, or may be supplied to the recording medium via a wide area network including the Internet.

Also, the division of functional blocks in the block diagram is an example, and a plurality of functional blocks can be realized as one functional block, one functional block can be divided into a plurality of functional blocks, and some functions can be moved to other functional blocks. may Moreover, single hardware or software may process functions of a plurality of functional blocks having similar functions in parallel or in a time division manner.

Further, the electricity bill unit price determination device according to each of the above embodiments may be implemented as a single device, or may be implemented as a plurality of devices. When the electricity bill unit price determination device is realized by a plurality of devices, each component included in the electricity bill unit price determination device may be distributed to the plurality of devices in any way. Further, when the electricity rate unit price determination device is realized by a plurality of devices, the communication method between the plurality of devices is not particularly limited, and may be wireless communication or wired communication. Also, wireless and wired communications may be combined between devices.

Further, each component described in each of the above embodiments may be realized as software, or typically as an LSI, which is an integrated circuit. These may be made into one chip individually, or may be made into one chip so as to include part or all of them. Although LSI is used here, it may also be called IC, system LSI, super LSI, or ultra LSI depending on the degree of integration. Further, the method of circuit integration is not limited to LSI, and may be implemented by a dedicated circuit (for example, a general-purpose circuit that executes a dedicated program) or a general-purpose processor. An FPGA (Field Programmable Gate Array) that can be programmed after the LSI is manufactured, or a reconfigurable processor that can reconfigure connections or settings of circuit cells inside the LSI may be used. Furthermore, if an integration technology that replaces the LSI appears due to advances in semiconductor technology or another technology derived from it, it is of course possible to integrate the components using that technology.

A system LSI is an ultra-multifunctional LSI manufactured by integrating multiple processing units on a single chip, and specifically includes a microprocessor, ROM (Read Only Memory), RAM (Random Access Memory), etc. A computer system comprising A computer program is stored in the ROM. The system LSI achieves its functions by the microprocessor operating according to the computer program.

Also, one aspect of the present invention may be a computer program that causes a computer to execute each characteristic step included in each method shown in any one of FIGS.

Also, for example, the program may be a program to be executed by a computer. Also, one aspect of the present invention may be a computer-readable non-transitory recording medium on which such a program is recorded. For example, such a program may be recorded on a recording medium and distributed or distributed. For example, by installing the distributed program in a device having another processor and causing the processor to execute the program, it is possible to cause the device to perform the above processes.

10, 110, 210 electricity bill unit price determination device 11 transaction price acquisition unit 12 imbalance price prediction unit 13 electricity sales amount prediction unit 14 electricity bill unit price calculation unit 15 notification unit 16 controllable amount acquisition unit 17 control unit (first control unit )
20, 30 consumer 21, 31 energy resource 23, 33 controller 23a receiving unit (acquiring unit)
23b display unit (second display unit)
23c control unit (second control unit)
60 Aggregator

Claims (11)

An electricity rate unit price determination device that determines the price of electricity sold to consumers by an electricity retailer,
a transaction price acquisition unit that acquires a transaction price of electricity based on the electricity sales plan between the business operator and at least one of the wholesale electricity market and the power generation business;
an imbalance price prediction unit that calculates an imbalance price prediction value based on the market price of the wholesale electricity market;
an electric power sales prediction unit that calculates a predicted electric power sales amount based on the actual electric power sales amount;
An electricity sales amount difference that is a difference between the electricity sales amount plan and the electricity sales amount forecast value is calculated, and an electricity rate is calculated based on the electricity sales amount difference, the transaction price, and the imbalance price forecast value. an electricity rate unit price calculation unit that calculates a unit price;
an electricity bill unit price determination device, comprising: a notification unit that notifies the consumer of the electricity bill unit price. The electricity bill unit price calculation unit sets the electricity bill unit price as a reference electricity bill unit price when the electricity sales difference is within a predetermined range, The electricity bill unit price is made lower than the reference electricity bill unit price according to at least one of the imbalance price prediction value and the electricity sales amount difference, and if the electricity sales amount difference is smaller than the lower limit of the predetermined range, the electricity 2. The electricity bill unit price determination device according to claim 1, wherein the electricity bill unit price is set higher than the reference electricity bill unit price according to at least one of the imbalance price prediction value and the electricity sales amount difference. The consumer has an energy resource that can be controlled by the electricity rate unit price determination device,
The electricity bill unit price determination device further includes a controllable amount acquisition unit that acquires a controllable amount of the energy resource,
The electricity bill unit price determination device according to claim 1 or 2, wherein the electricity bill unit price calculating unit further calculates the electricity bill unit price based on the controllable amount. Furthermore, comprising a first control unit that formulates a control command for controlling the energy resource,
The electricity bill unit price determination device according to claim 3, wherein the notification unit notifies at least one of an aggregator managing the energy resource and the consumer of the control command. The electricity bill unit price determination device according to claim 4, wherein the notification unit notifies the at least one of the control command after notification of the electricity bill unit price. moreover,
a first presentation unit that presents the electricity bill unit price calculated by the electricity bill unit price calculation unit;
a receiving unit that receives an input of an updated value of the electricity rate unit price,
The electricity bill unit price determination device according to any one of claims 1 to 5, wherein the notification unit notifies the consumer of an updated value of the electricity bill unit price input to the reception unit. The electricity rate unit price according to any one of claims 1 to 6, wherein the imbalance price prediction unit further calculates the imbalance price prediction value based on at least one of the actual imbalance price value and weather information. decision device. A controller that controls an energy resource installed in a consumer,
an acquisition unit that acquires the electricity bill unit price calculated by the electricity bill unit price determination device according to any one of claims 1 to 7;
A second presentation unit that presents the electricity bill unit price. A controller. The controller according to claim 8, further comprising a second control unit that formulates a first control command for the energy resource from the electricity rate unit price and outputs the formulated first control command to the energy resource. The consumer has an energy resource controllable from an external device,
The acquisition unit further acquires a second control command for controlling the energy resource from the external device,
The controller according to claim 9, wherein said second control section further formulates said first control command based on said second control command. An electricity unit price determination method for determining the price of electricity sold to consumers by an electricity retailer, comprising:
obtaining a transaction price of electricity based on the electricity sales plan between the business operator and at least one of a wholesale electricity market and a power generation business;
calculating an imbalance price prediction value based on the market price of the wholesale electricity market;
a step of calculating a predicted power sales amount based on the actual power sales amount;
An electricity sales amount difference that is a difference between the electricity sales amount plan and the electricity sales amount forecast value is calculated, and an electricity rate is calculated based on the electricity sales amount difference, the transaction price, and the imbalance price forecast value. calculating a unit price;
and a step of notifying said consumer of said electricity bill unit price.

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