KR101955504B1 - System and method for power trading - Google Patents

Abstract

The present invention provides a system for power trading which is capable of power trading through a blockchain and smart contract technique without verification of trading information in a central system and a method thereof. According to an embodiment of the present invention, the system for power trading comprises: a blockchain management unit generating a blockchain having power demand information and power generation information of each prosumer, power unit cost information of an administrator and power trading information between prosumers which are recorded therein and supplying each blockchain to each prosumer; a calculation unit using the power demand information and the power generation information of the prosumer registered in the blockchain to calculate power demand estimated volumes and power generation estimated volumes of each prosumer; and a matching unit selecting and matching a first prosumer, who needs to a power purchase, and a second prosumer, who can sell power, in accordance with the power demand estimated volumes and the power generation estimated volumes by each prosumer, wherein the blockchain management unit can update the blockchain by receiving the power trading information between the first prosumer and the second prosumer.

Description

[0001] SYSTEM AND METHOD FOR POWER TRADING [0002]

An embodiment of the present invention relates to a power trading system and method.

Generally, the electric power market is largely composed of power generation companies that sell electricity through the electric power market, sales companies that purchase electric power, and consumers.

In Korea, KEPCO is in charge of transmission and distribution and sales of power generation and sales companies that can only deal with electric power through electric power market and supply electric power to final consumers.

The electric power produced by the power plant is purchased by KEPCO at a price determined by the electric power market and supplied to consumers. In the monopoly power sales structure by KEPCO, electric power could not be exchanged among consumers, and thus it was impossible to supply or sell electric power under favorable conditions.

However, as the development of various renewable energy becomes possible and a small power generation company emerges, the structure of exclusive power sales by KEPCO is changing.

In addition, with the introduction of a smart grid that integrates information and communication technologies in the power trading system, consumers are able to purchase electricity from multiple power sellers, enabling consumers to select power sellers directly.

On the other hand, the introduction of bidding method electric power sales was introduced with the introduction of Smart Grid, but in the past, only the method of purchasing electric power at the lowest price has been developed.

However, with the diversification of power sellers, consumers have the advantage of being able to purchase electricity at a lower cost, but the reliability of sales of power sellers is lowered.

That is, the power supply capability of each power seller is varied due to the appearance of various small-sized power sellers. Consumers have purchased electricity at the lowest price in the electricity market, but there is no or insufficient surplus power to sell to the auctioned power seller.

As such, the electric power market is changing, and electric power is being traded through various power generation facilities such as solar power generation facilities, wind power generation facilities, diesel generators, and distributed power generation facilities.

However, in the case of the amount of generated power generated through these power generation facilities, there is a minimum amount of registered reference amount of power for the power trading. Therefore, the operator who operates the small-scale power generation facility performs the power trading until the registered power amount is satisfied There is a problem that can not be done.

Therefore, a prosumer who sells and uses a large amount of electricity generated by the company participates in the electric power trading, collects the amount of electric power produced, and starts a power trading system according to the demand.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a power trading system and method capable of performing power trading without verifying transaction information on a central system through a block chain and smart contract technology.

According to the embodiment of the present invention, a block chain in which the power demand information of each prosumer, the power generation amount information, the power unit price information of the manager, and the power trading information between prosumers are recorded, Management; A calculating unit for calculating a predicted power demand and a predicted power generation amount for each prosumer using the power demand information and the power generation amount information of the prosumer registered in the block chain; And a matching unit for selecting and matching a first prosumer requiring power purchase and a second prosumer capable of selling electricity according to the predicted electric power demand amount and the electric power production predicted amount for each prosumer and the block chain management unit includes a first prosumer, And can update the block chain by receiving power transaction information between prosumers.

The block chain management unit may periodically update the block chain by registering power demand information, power generation amount information, and power unit price information of each prosumer.

The power transaction information may include transaction completion information, transaction power amount, and transaction amount information.

The matching unit may exclude a prosumer that matches but does not make a transaction more than a predetermined number of times for a predetermined period of time by referring to the transaction completion.

The settlement unit may further include a settlement unit that calculates a transaction amount using the purchased amount of power of the first prosumer and the power unit price information registered in the block chain, and performs a settlement process based on the calculated transaction amount.

The settlement unit may perform settlement processing using virtual currency linked to the block chain.

The calculating unit may calculate the power demand prediction amount and the power generation prediction amount of the next day prosumer using the power demand amount and the power generation amount information of the same day prosumer registered in the block chain, the power demand amount of the prosumer and the power generation amount information of the same period of the previous year.

The calculating unit may calculate the predicted electric power demand and the predicted electric power generation amount of the next day's prosumer by reflecting the day's weather information, the same day period weather information, and the next day's weather forecast information.

According to an embodiment of the present invention, each prosumer registers power demand information and power generation amount information in a block chain; Registering power unit price information in a block chain by an administrator; The block chain management unit registers the power demand information, the power generation amount information, and the power unit price information of each prosumer, and updates the block chain; Calculating a power demand prediction amount and a power generation prediction amount for each prosumer using the power demand amount information and the power generation amount information of the prosumer registered in the block chain; Matching unit selects and matches a first prosumer requiring power purchase and a second prosumer capable of selling electricity according to the predicted electric power demand amount and the electric power production forecast amount for each prosumer and the block chain management unit compares the first prosumer and the second prosumer, And updating the block chain by receiving the power transaction information between the power control unit and the power control unit.

The settlement unit may further include calculating a transaction amount using the purchased power amount of the first prosumer and the power unit price information registered in the block chain, and performing a settlement process based on the calculated transaction amount.

The power trading system and method according to the present invention enable rapid power trading without verification of transaction information on a central system through a block chain and smart contract technology, and can reduce operating costs due to power trading.

In addition, based on the power information of the prosumer stored in the private block chain, smart transaction technology can be utilized to streamline the power trading and settlement process.

In addition, it can support transparent electricity trading.

1 is a conceptual diagram of a power trading system according to an embodiment of the present invention,
2 is a block diagram of a power trading system according to an embodiment of the present invention,
3 to 6 are views for explaining the operation of the power trading system according to the embodiment of the present invention.

The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated and described in the drawings. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms including ordinal, such as second, first, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be referred to as a first component, and similarly, the first component may also be referred to as a second component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings, wherein like or corresponding elements are denoted by the same reference numerals, and redundant description thereof will be omitted.

FIG. 1 is a conceptual diagram of a power trading system 100 according to an embodiment of the present invention, and FIG. 2 is a configuration block diagram of a power trading system 100 according to an embodiment of the present invention.

1 and 2, a power trading system 100 according to an embodiment of the present invention includes a block chain management unit 110, a calculation unit 120, a matching unit 130, and a settlement unit 140 Lt; / RTI >

The block chain management unit 110 generates a block chain 1 in which power demand information of each prosumer 10, power generation amount information, power unit price information of the manager 20, and prosumer power trading information are recorded, 1) to each of the prosumer 10 and the manager 20. The block chain 1 includes a plurality of blocks, and each block may include at least one of power capacity information, power generation amount information, power unit price information, and transaction information. The information contained in each block may be registered or updated by the prosumer 10, the manager 20, and the power trading system 100 associated with the block chain 1.

Each prosumer 10 can periodically register its own power demand information and power generation amount information in a block chain. The prosumer 10 may be, for example, any of a customer, a power plant, and a distributed power source. The electric power demand amount may mean the amount of electric power used for a certain period of time by the corresponding prosumer, and the electric power production amount information may mean electric power or extra electric power generated by the prosumer for a certain period of time.

The manager 20 can periodically update the power unit price information and register it in the block chain 1. [ The manager 20 may be, for example, a central server of the power exchange.

The block chain management unit 110 may update the block chain 1 by periodically registering power demand information, power generation amount information, and power unit price information of each prosumer 10.

The block chain management unit 110 may generate the block chain 1 using the information registered by the prosumer 10 and the administrator 20 and may provide the block chain to all the prosumers 10 connected thereto. The block chain management unit 110 may provide the updated block chain to the prosumer 10 in real time when the block chain 1 is updated.

Also, the block-chain managing unit 110 may update the block chain 1 by receiving the power transaction information between the first and second prosumers. The first and second prosumers can register the power transaction information in the block chain 1 and the block chain management unit 110 can update the block chain 1 using the registered power transaction information. The block chain management unit 110 can update the block chain 1 by receiving the corresponding power transaction information even when power trading is performed or power trading is not performed.

The calculating unit 120 may calculate the power demand prediction amount and the power generation prediction amount for each prosumer using the power demand information and the power generation amount information of the prosumer 10 registered in the block chain 1. [ The calculating unit 120 may calculate the power demand prediction amount and the power generation prediction amount for the future specific time period using the power capacity information and the power generation amount information of the prosumer for the past predetermined period registered in the block chain 1. [ The power demand forecast amount may mean the amount of power that is expected to be used in the prosumer for a specific future period, and the predicted power generation amount may be the amount of power generated or the amount of extra power generated in the prosumer during the future specific period.

For example, the calculating unit 120 calculates the power demand amount of the next day prosumer using the power demand amount and power generation amount information of the same day prosumer registered in the block chain 1, the power demand amount of the prosumer for the same period of the previous year, The power generation prediction amount can be calculated. The same period of the previous year may be changed by setting, for example, it may be a period including three days before and after the same date in the previous year.

Alternatively, the calculating unit 120 may calculate the predicted power demand and the predicted power generation amount of the next-day prosumer by reflecting the day-of-the-day weather information, the previous-period weather forecast information, and the next- In the case of a dispersed power source among prosumers, since the power generation amount can be largely changed according to the weather condition, the calculating unit 120 can additionally reflect the weather information to calculate the electric power demand forecast amount and the electric power production forecast amount.

The matching unit 130 may select a first prosumer requiring power purchase and a second prosumer capable of selling electricity according to the predicted power demand and the estimated power generation amount for each prosumer. The matching unit 130 may select a prosumer whose power demand prediction amount exceeds the power generation prediction amount according to the power demand prediction amount and the power generation prediction amount calculated by the calculation unit 120 as a first prosumer. Here, the predicted power demand exceeding the predicted power generation amount can be defined as the insufficient power amount of the prosumer. In addition, the matching unit 130 may select a prosumer whose power generation predicted amount exceeds the predicted power demand according to the calculated power demand predicted amount and the generated power generation predicted amount as a second prosumer. Here, the power generation prediction amount exceeding the power demand prediction amount can be defined as the spare power amount of the prosumer.

The matching unit 130 may match the first prosumer with the second prosumer by comparing the insufficient power amount of the first prosumer with the redundant power amount of the second prosumer. The matching unit 130 may match a plurality of second prosumers so as to satisfy the insufficient power amount of the first prosumer. For example, a plurality of second prosumers may be matched with one first prosumer, and the sum of the remaining power amounts of the plurality of second prosumers must be greater than the power amount of the first prosumer.

The matching unit 130 may exclude a prosumer that matches but does not make a transaction more than a predetermined number of times for a predetermined period of time by referring to whether or not the transaction is successful. When each of the prosumers 10 is matched by the matching unit 130, the result of the transaction with the matched prosumer must be created in the power transaction information and registered in the block chain. At this time, the electric power transaction information may include the transaction completion information, the transaction power amount, and the transaction amount information. The matching unit 130 may exclude the prosumer from the matching subject for a predetermined period of time as a sanction for a prosumer that has not performed a transaction more than a predetermined number of times by referring to whether or not the transaction is included in the power transaction information. For example, the matching unit 130 may exclude the prosumer from the matching object for a predetermined period if the transaction has not proceeded more than a specified number of times or if the transaction has not proceeded continuously for a predetermined number of times or more. However, if the prosumer selected as the matching target has difficulty in conducting the transaction in case of special circumstances, it may be excluded from the reason for the sanction if the information on the possibility of the transaction progress before the registration of the electric power transaction information is registered in the block chain in advance have.

 The settlement unit 140 can calculate the transaction amount using the purchased power amount of the first prosumer and the power unit price information registered in the block chain, and perform the settlement processing according to the calculated transaction amount. At this time, the settlement unit 140 can perform settlement processing using the virtual currency linked to the block chain. The payment information processed by the settlement unit 140 may be registered in the block chain and updated by the block chain management unit 110. [

3 to 6 are views for explaining the operation of the power trading system according to the embodiment of the present invention.

Referring to FIG. 3, the prosumers A, B, and C register their respective power demand information and power generation amount information in a block chain, and the manager registers power unit price information in a block chain. The block chain management unit updates the block chain using the registered power demand information, the power generation amount information, and the power unit price information.

Referring to FIG. 4, the calculating unit calculates a predicted power demand and a predicted power generation amount for the prosumers A, B and C.

Referring to FIG. 5, the matching unit selects and matches a first prosumer requiring power purchase and a second prosumer capable of selling electricity according to a predicted power demand amount and a predicted power generation amount for each prosumer. The matching unit selects the prosumer A as the first prosumer whose power demand forecast exceeds the predicted power generation amount. The matching unit selects the prosumers B and C as the second prosumer whose power generation forecast amount exceeds the predicted power demand. Here, the short power amount of the prosumer A is 30 kW, and the spare power amounts of the prosumers B and C are 10 kW and 30 kW, respectively.

The matching unit matches the second prosumer according to the power shortage of the prosumer A. The matching unit can match the prosumer A with the prosumers B and C, for example, so that the prosumer A can purchase the spare power amount 10 kW of the prosumer B and the spare power amount 20 kW of the prosumer C. Or the matching unit can match the prosumer A with the prosumer C so that the prosumer A can purchase the spare power of the prosumer C of 30 kW.

Referring to FIG. 6, the block-chain management unit updates the block chain using the power transaction information registered in the matched prosumer. The updated block chain is provided to all prosumers and administrators that are associated.

As used in this embodiment, the term " portion " refers to a hardware component such as software or an FPGA (field-programmable gate array) or ASIC, and 'part' performs certain roles. However, 'part' is not meant to be limited to software or hardware. &Quot; to " may be configured to reside on an addressable storage medium and may be configured to play one or more processors. Thus, by way of example, 'parts' may refer to components such as software components, object-oriented software components, class components and task components, and processes, functions, , Subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables. The functions provided in the components and components may be further combined with a smaller number of components and components or further components and components. In addition, the components and components may be implemented to play back one or more CPUs in a device or a secure multimedia card.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

1: Block Chain
10: Prosumer
20: Manager
100: Power trading system
110: Block Chain Management Section
120:
130:
140:

Claims (10)

A block chain management unit for generating a block chain in which power demand information, power generation amount information, power unit price information of an administrator, and power trading information between prosumers are recorded for each of the associated prosumers, and providing the block chain to all associated prosumers;
A calculating unit for calculating a predicted power demand and a predicted power generation amount for each prosumer using the power demand information and the power generation amount information of the prosumer registered in the block chain;
And a matching unit for selecting and matching a first prosumer requiring power purchase and a second prosumer capable of selling electricity according to the predicted power demand and the predicted power generation amount for each prosumer,
Wherein the block chain management unit receives the power transaction information between the first and second prosumers to update the block chain,
Wherein the block chain includes a plurality of blocks,
Each of the blocks including power capacity information, power generation amount information, power unit price information and transaction information for each of the prosumers,
The power transaction information includes information on whether or not a transaction is completed, a transaction power amount, and transaction amount information,
Wherein the matching unit excludes the prosumer from the matching target for a predetermined period when the matching prosumer has not proceeded continuously for a predetermined number of times or more for a predetermined number of times using the transaction completion determination, If the information that the transaction proceeding may be difficult is registered in the block chain in advance,
The power unit price information is periodically updated by the central server of the power exchange and registered in the block chain,
The calculating unit calculates the predicted power demand and the predicted power generation amount of the next day's prosumer by reflecting the weather information of the day, the weather information for the period including the third day on the same day in the previous year, and the next day weather forecast information,
Wherein the matching unit matches a plurality of second prosumers satisfying a power shortage amount of one first prosumer and a sum of the remaining power amounts of the plurality of second prosumers is greater than a power shortage amount of the one first prosumer. The method according to claim 1,
Wherein the block chain management unit periodically registers power demand information and power generation amount information of each prosumer and updates the block chain. delete delete The method according to claim 1,
Further comprising: a settlement unit for calculating a transaction amount using the purchased amount of power of the first prosumer and the power unit price information registered in the block chain, and performing a settlement process based on the calculated transaction amount. 6. The method of claim 5,
Wherein the settlement unit performs settlement processing using virtual currency linked to the block chain. The method according to claim 1,
Wherein the calculating unit calculates a power demand forecast amount and a power generation forecast amount of a next day prosumer based on a power demand amount and a power generation amount information of the same day prosumer registered in the block chain, . delete Registering power demand information and power generation amount information of each associated prosumer in a block chain;
Registering power unit price information in a block chain by an administrator;
The block chain management unit registers the power demand information, the power generation amount information, and the power unit price information of each prosumer, and updates the block chain;
Calculating a power demand prediction amount and a power generation prediction amount for each prosumer using the power demand amount information and the power generation amount information of the prosumer registered in the block chain;
The matching unit selects and matches the first prosumer requiring power purchase and the second prosumer capable of selling electricity according to the predicted power demand amount and the estimated power generation amount for each prosumer,
Wherein the block chain management unit receives power transaction information between the first and second prosumers and updates the block chain,
Wherein the block chain includes a plurality of blocks,
Each of the blocks including power capacity information, power generation amount information, power unit price information and transaction information for each of the prosumers,
The power transaction information includes information on whether or not a transaction is completed, a transaction power amount, and transaction amount information,
The matching prosumer excludes the prosumer from the matching target for a predetermined period when the matching prosumer has not proceeded to deal with the matching prosumer more than a specific number of times or continuously for a predetermined number of times or more using the affirmation of the transaction completion, In the case that information that it is difficult to proceed before registration is registered in the block chain in advance, it is not judged as a reason for exclusion,
Wherein the step of updating includes the step of periodically updating the power unit price information by a central server of the power exchange and registering in the block chain,
The step of calculating the electric power demand forecast amount and the electric power production forecast amount may further include the step of calculating the electric power demand forecast amount and the electric power generation forecast amount based on the weather forecast information of the next day prosumer by reflecting the weather information and the next day weather forecast information for the period including three days before and after the same date, Calculating a power demand prediction amount and a power generation prediction amount,
Wherein the matching step includes matching the plurality of second prosumers satisfying a power shortage amount of one first prosumer, wherein the sum of the remaining power amounts of the plurality of second prosumers is equal to a sum A power trading method that is greater than the lack of prosumer power. 10. The method of claim 9,
Calculating a transaction amount using the purchased power amount of the first prosumer and the power unit price information registered in the block chain, and performing a payment process according to the calculated transaction amount.

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