KR102531936B1 - Method and device for performing power transaction contract execution between individuals through the power trading platform - Google Patents

Abstract

A method and apparatus for performing a power transaction contract between individuals through a power trading platform are disclosed. According to an embodiment of the present disclosure, a method for performing a power transaction contract between individuals through a power trading platform performed by a device includes a transaction calculated based on the inverter capacity of one or more solar panels managed by a power producer. receiving an available amount of power from a first terminal device used by the power producer; Receiving a first amount of power less than or equal to the tradable amount of power and a first transaction unit price for the first amount of power from the first terminal device at a first time; receiving, from a terminal device used by the plurality of power consumers, an amount of power to be purchased by the plurality of power consumers and a transaction unit price of the power to be purchased; identifying first at least one power acceptor among the plurality of power acceptors whose amount of power to be purchased is equal to or less than the first amount of power and whose unit price to be purchased is equal to the first transaction price; concluding a power transaction between the power producer and a first power consumer transmitting an amount of power to be purchased and a transaction unit price of the power to be purchased at the first time from among the identified first at least one power consumer; and transmitting information on a power transaction entered into between the first power consumer and the power producer to a terminal device used by an institution that supplies power.

Description

Method and device for performing power transaction contract execution between individuals through power trading platform

The present disclosure relates to a method and apparatus for performing a power trading contract between individuals through a power trading platform.

A photovoltaic power generation system refers to a power generation system that generates electricity by converting light energy from the sun. The solar power generation system is an eco-friendly power generation system based on the non-pollution and infinity of solar energy, and active research and development are being conducted in order to secure future energy sources for devices.

Specifically, technologies for charging DC electricity produced through solar panels, etc. to storage batteries through output controllers or converting them into alternating current through inverters and technologies for efficiently providing the generated electricity to power consumers are being actively researched. .

On the other hand, since the scale of facilities required to implement the photovoltaic power generation system is too large for individuals to handle, power companies have generally led the construction and implementation of the photovoltaic power generation system. In addition, it has been common to supply electricity generated through a solar power generation system to a power consumer through a power company.

However, in recent years, the number of private power providers that produce electricity by installing small-scale solar power generation facilities on rooftops of ordinary houses is increasing exponentially, and the power brokerage market that trades the power produced by individual power providers is also growing in size. .

However, there is a problem in that it is difficult for private power providers to secure a route for selling power produced through small-scale photovoltaic power generation facilities. In addition, there is a problem in that a consumer who needs power cannot easily find a private power provider that sells power at a reasonable price.

The present disclosure has been made to solve the above-described problems, and an object of the present disclosure is to provide a method and apparatus for performing a power transaction contract between individuals through a power transaction platform.

The problems to be solved by the present disclosure are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

According to an embodiment of the present disclosure, a method for performing a power transaction contract between individuals through a power trading platform, performed by a device, is calculated based on the inverter capacity of one or more solar panels managed by a power producer. receiving an amount of tradable power from a first terminal device used by the power producer; Receiving a first amount of power less than or equal to the tradable amount of power and a first transaction unit price for the first amount of power from the first terminal device at a first time; receiving, from a terminal device used by the plurality of power consumers, an amount of power to be purchased by the plurality of power consumers and a transaction unit price of the power to be purchased; identifying first at least one power acceptor among the plurality of power acceptors whose amount of power to be purchased is less than or equal to the first amount of power and whose unit price of power to be purchased is equal to the first transaction price; concluding a power transaction between the power producer and a first power consumer transmitting an amount of power to be purchased and a transaction unit price of the power to be purchased at the first time from among the identified first at least one power consumer; and transmitting information on a power transaction entered into between the first power consumer and the power producer to a terminal device used by an institution supplying power.

In addition, a first message inquiring about whether to change a transaction unit price for a difference between the first amount of power and the amount of power that the first power acceptor intends to purchase may be transmitted from the device to the first terminal device.

And, the method is based on receiving a second message requesting to change the transaction unit price for the difference value to a second transaction unit price from the first terminal device at a second time in response to the first message, changing a transaction unit price for the difference value to the second transaction unit price, and changing a time set for a transaction of the difference value from the first time point to the second time point; identifying second at least one power acceptor among the plurality of power acceptors whose amount of power to be purchased is less than or equal to the difference value and whose unit price of power to be purchased is equal to the second unit price; Concluding a power transaction between the power producer and a second power consumer that has transmitted an amount of power to be purchased and a transaction unit price of the power to be purchased at the second time from among the identified second at least one power consumer; and transmitting information on a power transaction entered into between the second power consumer and the power producer to a terminal device used by an institution supplying power.

In addition, the terminal device used by the institution supplying the power is calculated by subtracting the amount of power actually traded between the power producer and the first power consumer from the amount of power received from the institution supplying the power of the first power consumer. The method is based on the fact that the actual amount of electricity traded is less than or equal to the amount of electricity that the first electricity consumer intends to purchase, and the actual amount of electricity purchased by the first electricity consumer The method may further include identifying whether a difference between the amounts of power to be used exceeds a threshold value.

And, based on the method, based on the identification that the difference between the actual amount of electricity traded and the amount of electricity that the first power consumer intends to purchase exceeds a threshold value: the actual amount of electricity traded and the amount of electricity that the first electricity consumer intends to purchase Calculating an evaluation score of the power producer by applying a predefined weight to a difference between the two; Receiving a second amount of power less than or equal to the tradable amount of power and a third transaction unit price for the second amount of power from the first terminal device at a third time; identifying at least one third power acceptor among the plurality of power acceptors whose amount of power to be purchased is equal to or less than the third amount of power and whose unit price of power to be purchased is equal to the third unit price; transmitting a third message to a terminal device used by a third power acceptor who has transmitted an amount of power to be purchased and a transaction unit price of power to be purchased at the third time among the identified third at least one power acceptor; and a power contract between the third power consumer and the power producer based on receiving a fourth message informing that a power contract is to be concluded with the power producer from a terminal device used by the third power consumer in response to the third message. , and the third message may include an evaluation score of the power producer and a power transaction history of the power producer.

According to various embodiments of the present disclosure, a method and apparatus for performing a power transaction contract between individuals through a power trading platform may be provided.

According to various embodiments of the present disclosure, a private power producer can easily secure a route for selling power, and also easily secure a supply source that sells power at a reasonable price from a power demander.

According to various embodiments of the present disclosure, it is possible to save time and cost for running a power generation business by efficiently identifying and managing the power capacity and sales capacity produced by individual power producers.

The effects of the present disclosure are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

1 is a schematic diagram of a system for implementing a method for performing a power transaction contract between individuals through a power trading platform, according to an embodiment of the present disclosure.
2 is a block diagram briefly illustrating the configuration of an apparatus for performing a power transaction contract between individuals through a power trading platform according to an embodiment of the present disclosure.
3 is a flowchart illustrating a method of performing a power transaction contract between individuals through a power trading platform according to an embodiment of the present disclosure.
FIG. 4 is a diagram for explaining information exchanged to perform a method of executing a power transaction contract between individuals through a power trading platform according to an embodiment of the present disclosure.
5 is a diagram for explaining a process of concluding a power transaction between a power consumer and a power producer according to an embodiment of the present disclosure.

Advantages and features of the present disclosure, and methods of achieving them, will become clear with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below and may be implemented in various different forms, but only the present embodiments make the disclosure of the present disclosure complete, and are common in the art to which the present disclosure belongs. It is provided to fully inform the person skilled in the art of the scope of the present disclosure, which is only defined by the scope of the claims.

Terminology used herein is for describing the embodiments and is not intended to limit the present disclosure. In this specification, singular forms also include plural forms unless specifically stated otherwise in a phrase. As used herein, "comprises" and/or "comprising" does not exclude the presence or addition of one or more other elements other than the recited elements.

Like reference numerals throughout the specification refer to like elements, and “and/or” includes each and every combination of one or more of the recited elements. Although "first", "second", etc. are used to describe various components, these components are not limited by these terms, of course. These terms are only used to distinguish one component from another. Accordingly, it goes without saying that the first element mentioned below may also be the second element within the technical spirit of the present disclosure.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with meanings commonly understood by those skilled in the art to which this disclosure belongs. In addition, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless explicitly specifically defined.

The spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe a component's correlation with other components. Spatially relative terms should be understood as encompassing different orientations of elements in use or operation in addition to the orientations shown in the drawings.

For example, if you flip a component that is shown in a drawing, a component described as "below" or "beneath" another component will be placed "above" the other component. can Thus, the exemplary term “below” may include directions of both below and above. Components may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

In describing the present disclosure, "peer-to-peer (P2P)" refers to directly entering into an agreed contract (eg, power transaction volume, power transaction unit price, etc.) between a power producer and a power consumer, and generating electricity This refers to direct bilateral transaction processing in which electricity is directly supplied to consumers and electricity transactions are processed.

"Power producer" may refer to a company or individual business operator that produces power by having a self-generation facility for renewable energy. For example, "power producer" may include a factory-type consumer participating in the project.

In addition, the "power recipient" may mean an institution that supplies power (eg, a company that receives power only through the Korea Electric Power Corporation (KEPCO) system).

Hereinafter, a method and apparatus for performing a contract conclusion through a power trading platform for power trading between individuals will be described with reference to drawings.

FIG. 1 is a diagram schematically illustrating a system 1000 implementing a method of performing a contract conclusion through a power trading platform for interpersonal power trading, according to an embodiment of the present disclosure.

As shown in FIG. 1, an integrated system 1000 for implementing a method of signing a contract through a power trading platform for interpersonal power trading includes a device 100, a first terminal device used by a power producer ( 200-1), a terminal device 200-2 used by a power acceptor, and a third terminal device 300 used by KEPCO.

Here, in FIG. 1, the device 100 and the terminal device 300 used by KEPCO are implemented in the form of a single desktop, and the terminal device 200-1 used by the power producer and the terminal device 200-1 used by the power consumer 2) shows a case implemented in the form of a single smart phone, but is not limited thereto.

The device 100, the first terminal device 200-1 used by power producers, the terminal device 200-2 used by power consumers, and the terminal device 300 used by KEPCO are various types of devices or devices as described above. One or more types of devices may be configured as a group of connected devices.

The device 100 included in the system 1000, the first terminal device 200-1 used by the power producer, the terminal device 200-2 used by the power consumer, and the terminal device 300 used by KEPCO are network ( W) through which communication can be performed.

Here, the network W may include a wired network and a wireless network. For example, the network may include various networks such as a local area network (LAN), a metropolitan area network (MAN), and a wide area network (WAN).

Also, the network W may include the well-known World Wide Web (WWW). However, the network W according to an embodiment of the present disclosure is not limited to the above-listed networks, and may include at least a part of a known wireless data network, a known telephone network, and a known wired/wireless television network.

The device 100 may provide a power trading platform service for processing power trading between individuals. That is, the device 100 includes a first terminal device 200-1 used by a power producer and a second terminal used by a power consumer using an application or/and a website in the form of a platform through which power producers and power consumers can trade power. It can be provided to the device 200-2.

The first terminal device 200-1 used by the power producer on the application managed/created by the device 100 may secure a route to sell the generated power. The second terminal device 200 - 2 used by the power acceptor may also search for a power producer to purchase power through an application managed/created by the device 100 .

A method of providing a power trading platform for processing power trading between individuals through an application generated by the device 100 will be described in detail with reference to FIGS. 3 to 5 .

The first terminal device 200 - 1 used by the power producer may exchange various types of information with a power consumer who intends to purchase power by registering on an application created by the device 100 .

The first terminal device 200-1 used by the power producer may upload the tradable amount of power calculated based on the inverter capacity of one or more solar panels onto an application. That is, the first terminal device 200 - 1 used by the power producer may transmit the tradable amount of power to the device 100 .

In addition, the first terminal device 200-1 used by the power producer may transmit the obtained value to the device 100 through a watt-hour meter connected to the power generation facility.

The terminal device 200 - 2 used by the power consumer may exchange various types of information with a power producer who intends to sell power by registering on an application created by the device 100 .

The terminal device 300 used by KEPCO may receive the amount of power actually traded between the power producer and the power consumer from the device 100 . The terminal device 300 used by KEPCO may transmit a power rate notice reflecting the amount of power actually traded to the first terminal device 200-1 used by the power producer and the terminal device 200-2 used by the power consumer.

FIG. 2 is a block diagram briefly illustrating the configuration of an apparatus for performing a contract conclusion through a power trading platform for interpersonal power trading according to an embodiment of the present disclosure.

As shown in FIG. 2 , the device 100 may include a memory 110 , a communication module 120 , a display 130 , and a processor 140 . However, it is not limited thereto, and software and hardware configurations of the apparatus 100 may be modified/added/omitted within a range obvious from the viewpoint of those skilled in the art according to necessary operations.

The memory 110 may store data supporting various functions of the device and programs for operation of the controller, and input/output data (eg, tradable power calculated by the power producer, each watt-hour meter) measured power values, etc.) can be stored, and a plurality of application programs (applications) running in the device, data for operation of the device, and commands can be stored. At least some of these application programs may be downloaded from an external server through wireless communication.

The memory 110 may be a flash memory type, a hard disk type, a solid state disk type, a silicon disk drive type, or a multimedia card micro type. micro type), card type memory (eg SD or XD memory, etc.), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable EEPROM (EEPROM) It may include a storage medium of at least one type of a programmable read-only memory (PROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, and an optical disk. In addition, the memory 110 is separate from the present device, but may be a database connected by wire or wirelessly.

The communication module 120 may include one or more components enabling communication with an external device (eg, a first terminal device to a third terminal device), and for example, at least one of a wireless communication module and a location information module. may contain one.

Here, the wireless communication module includes, in addition to a WiFi module and a wireless broadband module, GSM (global System for Mobile Communication), CDMA (Code Division Multiple Access), WCDMA (Wideband Code Division Multiple Access), UMTS (universal mobile telecommunications system), time division multiple access (TDMA), long term evolution (LTE), and a wireless communication module supporting various wireless communication schemes such as 4G, 5G, and 6G.

The wireless communication module may include a wireless communication interface including an antenna and a transmitter for transmitting various signals (eg, a signal including information transmitted and received to conclude a power contract). In addition, the wireless communication module may further include a signal conversion module for modulating a digital control signal output from the control unit through a wireless communication interface into an analog type wireless signal under the control of the control unit.

The wireless communication module may include a wireless communication interface including an antenna and a receiver for receiving various signals. In addition, the wireless communication module may further include a signal conversion module for demodulating an analog type of wireless signal received through a wireless communication interface into a digital control signal.

The display 130 displays (outputs) information processed by the device 100 (eg, the amount of electricity actually traded between the electricity producer and the electricity consumer, the transaction price calculated based on the actual amount of electricity traded, etc.). For example, the display may display execution screen information of an application program (eg, an application) running on the device 100, or UI (User Interface) and GUI (Graphic User Interface) information according to such execution screen information. can

The processor 140 includes a memory for storing data for an algorithm or a program for reproducing the algorithm for controlling the operation of components in the present device, and at least one processor for performing the above-described operation using the data stored in the memory ( not shown) may be implemented. In this case, the memory and the processor may be implemented as separate chips. Alternatively, the memory and the processor may be implemented as a single chip.

In addition, the processor may control any one or a combination of the components described above in order to implement various embodiments according to the present disclosure described in FIGS. 3 to 5 below on the present device.

3 is a flowchart illustrating a method of providing a power trading platform service for interpersonal power trading processing performed by a device according to an embodiment of the present disclosure.

The device may receive, from the first terminal device used by the power producer, the amount of tradable power calculated based on the inverter capacities of one or more solar panels managed by the power producer (S310).

Referring to FIG. 4 , a power producer may generate power through one or more solar panels 405 . The power producer may calculate the tradable power amount by applying domestic solar power generation time (eg, 3.5 hours/day) based on the capacity of the inverter 410 connected to one or more solar panels 405 . The first terminal device used by the power producer may transmit the calculated amount of tradable power to the device.

The device may upload the amount of power tradable by the power producer to the application 420 in the form of a power trading platform for processing power transaction between individuals performed by the device. A terminal device used by an institution that supplies power (eg, KEPCO) can identify the amount of power that can be traded by the power producer uploaded on the application 420 .

The device may receive a first amount of power less than or equal to a tradable amount of power and a first transaction unit price for the first amount of power from the first terminal device at a first time (S320). That is, the power producer may upload the first amount of power to be sold and the first transaction unit price for the first amount of power on an application for power transaction managed/controlled by the device.

When an amount of power exceeding the tradable amount of power is transmitted from the first terminal device, the device may transmit a warning message indicating that the amount of power to be sold to the first terminal device exceeds the tradable amount of power. In addition, the device may provide a UI for inputting a first amount of power less than or equal to a tradable amount of power to the first terminal device.

The device may receive, from the terminal devices used by the plurality of power consumers, the amount of power that the plurality of power consumers want to purchase and the transaction unit price of the power to buy (S330). That is, a plurality of power consumers may upload the amount of power to be purchased and the transaction unit price for the power on an application for power trading managed/controlled by the device.

The device may identify at least one first power acceptor among the plurality of power acceptors, in which the amount of power to be purchased is equal to or less than the first amount of power and the transaction unit price of the power to be purchased is equal to the first transaction unit price (S340).

The device may enter into a power transaction between the first power consumer and the power producer, which transmits the amount of power to be purchased and the transaction unit price of the power to be purchased at a first time among the identified first at least one power acceptor (S350).

That is, electricity transaction may be concluded between the first electricity consumer and the electricity producer, who input the amount of electricity less than or equal to the first electricity amount and the first transaction unit price at the same time among the first at least one electricity consumer.

Referring to FIG. 5 (a) (ask price of the electricity producer) and (b) (ask bid of the first electricity consumer), the electricity producer and the first electricity consumer who input the same amount of electricity and the same transaction unit price at the same time A power transaction contract between the parties may be concluded.

The device may transmit information on the power transaction concluded between the first power consumer and the power producer (eg, the amount of power and unit price of the transaction, etc.) to the terminal device used by the power supplying institution (S360).

The terminal device used by the power supplying institution transfers the price for the amount of power obtained by subtracting the amount of power actually traded between the power producer and the first power acceptor from the amount of power received from the institution supplying power to the first power acceptor to the specific power acceptor. can be charged

Additionally or alternatively, the device may transmit, to the first terminal device, a first message inquiring whether to change a transaction unit price for a difference between the first amount of power and the amount of power that the first power acceptor intends to purchase.

In response to the first message, based on receiving a second message requesting to change the transaction unit price for the difference value to the second transaction unit price from the first terminal device at a second time, the device performs a transaction for the difference value. The unit price may be changed to the second transaction unit price, and the time set for the transaction of the difference value may be changed from the first time to the second time. The device may identify at least one second power acceptor, among the plurality of power acceptors, for which an amount of power to be purchased is less than or equal to the difference value and a transaction unit price of power to be purchased is equal to a second transaction unit price. The device may enter into a power transaction between the second power consumer and the power producer, which transmits the amount of power to be purchased and the transaction unit price of the power to be purchased at a second time among the identified second at least one power acceptor. The device may transmit information on a power transaction concluded between the second power consumer and the power producer to a terminal device used by an institution supplying power.

Additionally or alternatively, based on the fact that the actual amount of power traded is less than or equal to the amount of power that the first power acceptor intends to purchase, the device determines whether a difference between the actual amount of power traded and the amount of power that the first power acceptor intends to purchase exceeds a threshold value. can be identified.

Based on the identification that the difference between the actual amount of power traded and the amount of power that the first power acceptor intends to purchase exceeds a threshold value, the device assigns a predefined weight to the difference between the actual amount of power traded and the amount of power that the first power acceptor intends to purchase. It can be applied to calculate the evaluation score of the power producer. A predefined weight may be defined so that the evaluation score of the power producer decreases as the difference between the amount of power actually traded and the amount of power that the first power consumer intends to purchase increases.

Also, the device may receive a second amount of power less than or equal to a tradable amount of power and a third transaction unit price for the second amount of power from the first terminal device at a third time. The device may identify at least one third power acceptor among the plurality of power acceptors, in which the amount of power to be purchased is less than or equal to the third amount of power and the transaction unit price of the power to be purchased is equal to the third transaction unit price. The device may transmit a third message to a terminal device used by a third power acceptor that has transmitted an amount of power to be purchased and a transaction unit price of power to be purchased at a third time among the identified third at least one power acceptor.

Here, the third message may include an evaluation score of the power producer and a power transaction history of the power producer (eg, a difference between the contracted amount of power and the actual amount of power traded). That is, the third power consumer may determine whether to conclude power transaction after checking the evaluation score of the power producer and the power transaction history before entering into power transaction with the power producer.

In response to the third message, based on the reception of a fourth message notifying the conclusion of a power contract with a power producer from a terminal device used by the third power consumer, the device may enter into a power contract between the third power consumer and the power producer. can

Based on the identification that the difference between the amount of power actually traded and the amount of power that the first power acceptor intends to buy is equal to or less than the threshold value, the device may directly conclude a power transaction between the power producer and the third power acceptor without transmitting the third message. .

Meanwhile, the disclosed embodiments may be implemented in the form of a recording medium storing instructions executable by a computer. Instructions may be stored in the form of program codes, and when executed by a processor, create program modules to perform operations of the disclosed embodiments. The recording medium may be implemented as a computer-readable recording medium.

Computer-readable recording media include all types of recording media in which instructions that can be decoded by a computer are stored. For example, there may be read only memory (ROM), random access memory (RAM), magnetic tape, magnetic disk, flash memory, optical data storage device, and the like.

As above, the disclosed embodiments have been described with reference to the accompanying drawings. Those skilled in the art to which the present disclosure pertains will understand that the present disclosure may be implemented in a form different from the disclosed embodiments without changing the technical spirit or essential features of the present disclosure. The disclosed embodiments are illustrative and should not be construed as limiting.

100: server
110: memory
120: communication module
130: display
140: processor

Claims (5)

A method for performing a power transaction contract between individuals through a power trading platform, performed by an apparatus, comprising:
Receiving, from a first terminal device used by the power producer, an amount of tradable power calculated based on inverter capacities of one or more solar panels managed by the power producer;
Receiving a first amount of power less than or equal to the tradable amount of power and a first transaction unit price for the first amount of power from the first terminal device at a first time;
receiving, from a terminal device used by the plurality of power consumers, an amount of power to be purchased by the plurality of power consumers and a transaction unit price of the power to be purchased;
identifying first at least one power acceptor among the plurality of power acceptors whose amount of power to be purchased is equal to or less than the first amount of power and whose unit price to be purchased is equal to the first transaction price;
concluding a power transaction between the power producer and a first power consumer transmitting an amount of power to be purchased and a transaction unit price of the power to be purchased at the first time from among the identified first at least one power consumer; and
Transmitting information on a power transaction concluded between the first power consumer and the power producer to a terminal device used by an authority supplying power;
The terminal device used by the institution supplying the power is:
charge the first power consumer with a price for an amount of power obtained by subtracting an amount of power actually traded between the power producer and the first power consumer from an amount of power received from an institution supplying the power of the first power consumer; and
Identifying whether a difference between the actual amount of power traded and the amount of power that the first power acceptor intends to purchase exceeds a threshold value based on the fact that the actual amount of power traded is less than or equal to the amount of power that the first power acceptor intends to purchase;
Based on the identification that the difference between the actual amount of power traded and the amount of power that the first power consumer intends to purchase exceeds the threshold value, the apparatus for executing the power transaction contract between individuals:
calculating an evaluation score of the power producer by applying a predefined weight to a difference between the amount of power actually traded and the amount of power that the first power consumer intends to purchase;
receive a second amount of power less than or equal to the tradable amount of power and a third transaction unit price for the second amount of power from the first terminal device at a third time;
identifying a third at least one power acceptor among the plurality of power acceptors whose amount of power to be purchased is equal to or less than a third amount of power and whose unit price of power to be purchased is equal to the third unit price;
transmits a third message to a terminal device used by a third power acceptor that has transmitted an amount of power to be purchased and a transaction unit price of power to be purchased at the third time among the identified third at least one power acceptor; and
A power contract between the third power consumer and the power producer is established based on the reception of a fourth message indicating to conclude a power contract with the power producer from a terminal device used by the third power consumer in response to the third message. concluded,
The third message includes an evaluation score of the power producer and a power transaction history of the power producer.
According to claim 1,
wherein a first message inquiring about whether to change a transaction unit price for a difference between the first amount of power and the amount of power that the first power acceptor intends to purchase is transmitted from the device to the first terminal device.
According to claim 2,
In response to the first message, based on receiving a second message requesting to change the transaction unit price for the difference value to a second transaction unit price from the first terminal device at a second time, the transaction for the difference value changing the unit price to the second transaction unit price, and changing the time set for the transaction of the difference value from the first time to the second time;
identifying second at least one power acceptor among the plurality of power acceptors whose amount of power to be purchased is less than or equal to the difference value and whose unit price of power to be purchased is equal to the second unit price;
Concluding a power transaction between the power producer and a second power consumer that has transmitted an amount of power to be purchased and a transaction unit price of the power to be purchased at the second time from among the identified second at least one power consumer; and
and transmitting information on a power transaction entered into between the second power consumer and the power producer to a terminal device used by the power supplying institution.
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