KR20210080741A - Energy trading system using and operation method thereof - Google Patents

Abstract

The present invention relates to a power trading system and a method for operating the same and, more particularly, to a system for predicting power demand and trading power based thereon, and a method for operating the same. The power trading system according to the present invention includes a power transaction terminal provided in each home; a server receiving purchase information and sales information from the power transaction terminal, matching power transactions between the power transaction terminals according to the purchase information and sales information, and settling a transaction amount based on power transaction details; and a power supply device supplying power according to the power transaction details. According to an embodiment of the present invention, it is possible to secure safety from network hacking through multiple authentications by power transaction participants, and increase the seller's profit by requiring only a minimum number of relay agencies.

Description

Electricity trading system and its operation method {ENERGY TRADING SYSTEM USING AND OPERATION METHOD THEREOF}

The present invention relates to a power trading system and a method for operating the same, and more particularly, to a system for predicting power demand and trading power based thereon, and a method for operating the same.

In general, energy trading is conducted in the demand resource trading market through the demand resource trading market opened by the central power exchange or in the market for selling the resources produced by power producers.

However, as power generation by various new and renewable energies becomes possible and small power generation companies appear, the monopoly power sales structure by large power companies is changing. In addition, with the introduction of smart grid technology that converges information and communication technology into the electricity trading system, consumers can purchase electricity from multiple electricity sellers, and consumers can directly select electricity sellers.

A smart grid is a power grid with enhanced communication network functions. The smart grid helps to automate all processes from power generation to power consumption, and also enables two-way communication between consumers and power service providers. Through the smart grid, consumers can install power devices in their homes or businesses to produce renewable energy and sell it to the power market, and after grasping the real-time power price through a smart meter, they can selectively use power at low price times.

Consumers receive information services related to electricity and electricity on a one-to-one basis from the power service provider according to a contract with the power service provider. However, consumers typically consume power intensively at a specific time rather than dissipating power evenly over the entire period, despite a contract with a power service provider. For example, a glove manufacturer mainly produces gloves in autumn or winter, so it consumes more electricity in autumn or winter than in spring or summer. As described above, when most consumers consume power according to their respective patterns, power consumption is dispersed, and power generation and consumption become inefficient, resulting in wasted power.

On the other hand, P2P electricity trading means that the end consumer becomes a prosumer who produces energy (the object that produces and consumes energy together), and exchanges the remaining electricity with other consumers on the power grid. P2P electricity trading is a method of trading electricity between individuals without going through KEPCO and the Korea Power Exchange. When electricity sellers share surplus electricity, price, and period, electricity consumers trade electricity by selecting electricity information that meets the optimal conditions. However, in the case of P2P electricity transaction, there is a concern about hacking of electricity information, and there is a problem that the actual profit of the seller is reduced due to the inefficiency of the transaction process that has to go through several intermediaries such as the existing banking system.

In order to solve the above problem, in Korean Patent Publication No. 10-2015-0139295, which is a prior art document, the meter reads power usage or power production in real time, and includes at least one of power usage information, power production information, and authentication information. A plurality of smart meters that transmit power transaction request information and power usage of each smart meter after receiving power transaction request information from the plurality of smart meters and performing authentication on the authentication information included in the power transaction request information A power trading device that analyzes information and power production information to match a user with insufficient power and a user with a surplus of power, relays the power transaction, and transmits the transaction details after the power transaction is completed, according to the transaction details received from the power trading device Disclosed is a financial automation-based electricity transaction method and system including a bank server for depositing or withdrawing money according to electricity transaction, but there is a limit in solving the above-mentioned problems.

Therefore, there is a need for a technique for solving the above-mentioned problems.

On the other hand, the above-mentioned background art is technical information possessed by the inventor for the derivation of the present invention or acquired in the process of derivation of the present invention, and cannot necessarily be said to be a known technique disclosed to the general public prior to the filing of the present invention.

The purpose of the present invention, created to solve the above-mentioned problems, is to predict electricity demand and trade electricity using surplus electricity, while securing safety from network hacking through multiple authentications by transaction participants and using only a minimum number of relay agencies. It is to provide a power trading system and its operation method that can expand the seller's profit by passing through the

As a technical means for achieving the above-described technical problem, the power trading system according to the present invention receives a power trading terminal provided in each home and purchase information and sales information from the power trading terminal, and the purchase information and sales information A power transaction system comprising: a server that matches power transactions between the power transaction terminals according to In the following, the power transaction terminal includes information on sales information including information on the capacity and selling price of surplus power for power transaction, and information on the capacity and purchase price of required power desired to be supplied from other households. A communication unit that provides purchase information to the server, a verification unit that receives a block generated according to transaction information when there is a remittance request and verifies the validity of transaction information of the block, and the transaction when verification is completed by the verification unit It comprises a remittance unit that remits the transaction amount according to the information.

And, the server preferentially matches the electricity transaction between the electricity transaction terminal that provided the matching sales information and purchase information among a plurality of sales information and purchase information provided by the electricity transaction terminal provided in each household, When the purchase information does not match, the electricity transaction between the closest sales information and the electricity transaction terminal that provided the purchase information may be matched.

In addition, when the sum of the capacity of the required power provided by one or a plurality of power transaction terminals and the sum of the capacity of the surplus power provided by the one or more power transaction terminals match, the server may use a one-to-many, many-to-one, or many-to-many method. In this way, power transactions between power trading terminals can be matched.

And the server calculates a plurality of predicted wattage for the previous month by applying the past wattage data collected in advance for each household to a plurality of time series prediction models, and then compares the calculated wattage forecast for the previous month with the actual wattage for the previous month. Predicting the electricity demand of each household by selecting the predicted electricity quantity for the previous month having the smallest error value among the plurality of calculated error values, and using the past electricity quantity data and time series prediction model used to calculate the selected electricity quantity prediction value for the previous month, The predicted power demand may be provided to the power transaction terminal.

In addition, the power transaction terminal may determine the capacity of the surplus power or required power based on the power demand amount provided from the server.

Meanwhile, the method of operating a power trading system according to the present invention includes the steps of (a) receiving sales information including information on surplus power capacity and selling price of each household from a power trading terminal provided in each household; (b) A step of receiving purchase information including information on the capacity and purchase price of electricity desired to be supplied from other households from a power transaction terminal provided in each household; (c) purchase information provided from the electricity transaction terminal and matching the power transaction between the power transaction terminals according to the sales information, (d) receiving a block generated according to the transaction information when there is a request for remittance, and verifying the validity of the transaction information of the block; e) Settling the transaction amount based on the electricity transaction details and transferring the transaction amount.

And the step (c) preferentially matches the electricity transaction between the electricity transaction terminal that provided matching sales information and purchase information among a plurality of sales information and purchase information provided by the electricity transaction terminal provided in each household, When the sales information and the purchase information do not match, it may be performed to match the electricity transaction between the closest sales information and the electricity transaction terminal that provided the purchase information.

In addition, in step (c), the one-to-many, many-to-one, or one-to-many, many-to-one or Power transactions between power trading terminals can be matched in a many-to-many manner.

And before the step (a), (a-1) applying the past wattage data collected in advance for each household to a plurality of time series prediction models to calculate a plurality of predicted wattage for the previous month; (a-2) the calculation Comparing the plurality of predicted watt-hours for the previous month with the actual watt-hour for the previous month and selecting the predicted watt-hour for the previous month having the smallest error value among a plurality of error values calculated by comparison; (a-3) calculating the selected watt-hour forecast for the previous month The method may further include predicting the power demand of each household by using the past power amount data and a time series prediction model used for , and providing the predicted power demand amount to the power transaction terminal.

In addition, the step (a) may be performed so that the capacity of the surplus power or the required power is determined based on the predicted power demand amount.

According to any one of the means for solving the problems of the present invention described above, there is an advantage in that electricity bills can be saved by predicting power demand and trading power using surplus power based thereon.

In addition, according to any one of the problem solving means of the present invention, it is possible to secure safety from network hacking through multiple authentications by power transaction participants and to expand the seller's profit by passing only a minimum number of relay agencies. have.

1 is a block diagram illustrating a power trading system according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them.

The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.

In the present invention, "on" means to be located above or below the target member, and does not necessarily mean to be located above the target member based on the direction of gravity. In addition, throughout the specification, when a part "includes" a certain component, this means that other components may be further included, rather than excluding other components, unless otherwise stated.

Throughout the specification, when a part is said to be "connected" to another part, it includes not only the case where it is "directly connected" but also the case where it is "electrically connected" with another element interposed therebetween.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, and when described with reference to the drawings, the same or corresponding components are given the same reference numerals, and the overlapping description thereof will be omitted. .

1 is a block diagram illustrating a power trading system according to an embodiment of the present invention.

As shown in FIG. 1 , the power trading system according to an embodiment of the present invention receives purchase information and sales information from a power trading terminal provided in each home and the power trading terminal, and according to the purchase information and sales information, and a server that matches power transactions between the power transaction terminals and settles a transaction amount based on the power transaction details, and a power supply device that supplies power according to the power transaction details.

The network refers to a connection structure capable of exchanging information with each other, such as a power transaction terminal and a server.

The server preferentially matches power transactions between a plurality of sales information and purchase information provided by a power transaction terminal provided in each household and a power transaction terminal that provides matching sales information and purchase information. For example, a certain household provides sales information including information on the capacity and sales price of surplus electricity to the server through a power transaction terminal, and the required power capacity desired to be supplied by other households through the electricity transaction terminal and when purchasing information including information on the purchase price is provided to the server, the server compares the sale information with the purchase information so that the required power capacity and the surplus power capacity are the same, and the purchase price and the selling price are the same. In this case, the power transaction between the power transaction terminal that provided the matching sales information and purchase information is preferentially matched.

On the other hand, when the sales information and the purchase information do not match, the server may match the electricity transaction between the closest sales information and the electricity transaction terminal that provided the purchase information.

And when the sum of the capacity of the required power provided by one or a plurality of power transaction terminals and the sum of the capacity of the surplus power provided by the one or a plurality of power transaction terminals match, the server performs a one-to-many, many-to-one, or many-to-many method. Power transactions between power trading terminals can be matched. For example, at home (A), 10 kWh of surplus power is registered in the server 300 through the power transaction terminal 100, and the required power of 5 kWh in the other two homes, i.e., (B) and (C), is calculated. When registered with the server 300 , the server 300 may match the (A) household with the (B), (C) household in a one-to-many manner for power transaction.

Claims (1)

a power transaction terminal provided in each home;
Receive purchase information and sales information from the power transaction terminal, and
Matching the power transaction between the power trading terminals according to the information and sales information,
a server that settles the transaction amount based on the transaction details; and
In the power transaction system comprising a power supply device for supplying surplus power according to the power transaction details,
The power transaction terminal,
A communication unit that provides the server with sales information including information on the capacity and sale price of surplus electricity for each household, and purchase information including information on the capacity and purchase price of electricity desired to be supplied from other households; ;
When there is a remittance request, the block generated according to the transaction information is received and the
a verification unit that verifies the validity of transaction information; and
When the verification is completed by the verification unit, the transaction amount is calculated according to the transaction information.
Power transaction system comprising a remittance unit for remittance.

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