KR20210058633A - Power trading apparatus between prosumer and consumer and its method - Google Patents

Abstract

The present invention relates to a device and method for transacting power between a prosumer and a consumer, which allows optimal transaction matching between a prosumer and a consumer. The device of the present invention comprises: a plurality of prosumer terminals managed by a prosumer; a power brokerage managing server communicating with the prosumer terminals; a plurality of consumer terminals communicating with the power brokerage managing server; and a power transaction managing server for managing corresponding power of the prosumer to be supplied to a matching consumer.

Description

Power trading apparatus between prosumer and consumer and its method

The present invention relates to a power transaction apparatus and a method for making power transaction between a prosumer and a consumer.

As new and renewable energy generation became possible, small and medium-sized power generation companies emerged, and in particular, prosumers that generate and consume power emerged.

As the prosumer spreads small-scale solar power generation facilities (renewable power generation facilities) for small buildings and homes, users can directly produce and use the remaining electricity to earn profits by selling the remaining electricity to companies, KEPCO, as well as general consumers. I can.

However, a reliable system for realizing a direct transaction between a prosumer and a consumer has not yet been developed.

The present invention provides an apparatus and method for trading power between a prosumer and a consumer, in which an optimal transaction matching between a prosumer and a consumer is achieved in consideration of transmission constraints.

The solution means of the present invention comprises a plurality of prosumer terminals managed by a prosumer selling generated power; A power brokerage management server that communicates with the plurality of prosumer terminals and mediates power transactions of each prosumer; A plurality of consumer terminals that communicate with the power brokerage management server to allow the consumer to purchase power in a desired condition; When a contract is concluded by matching a prosumer and a consumer through the plurality of prosumer terminals and consumer terminals, it includes a power transaction management server that manages to supply the corresponding power of the prosumer of the prosumer terminal to the matched consumer,

The power brokerage management server matches the prosumer with the lowest power purchase price when the consumer and the prosumer are matched,

The power brokerage management server includes a real-time transaction calculation unit to calculate and settle real-time transactions and errors between the prosumer and the consumer,

The power brokerage management server,

It consists of a price calculation unit that sets the transaction price so that electricity transaction is made, and a contract conclusion information collection unit that stores contract conclusion information according to the set transaction price,

The price calculation unit,

A bid proposal collection unit that collects bidding proposals for electricity transactions input by each prosumer, a consumer information collection unit that collects information on consumers who purchase electricity, and a transmission cost calculation unit that calculates costs incurred when using the transmission network for power supply. , Consisting of a matching operation unit that matches the prosumer suitable for consumer information,

The matching operation unit performs first matching when the location between the prosumer and the consumer is close or when the congestion of the power transmission network that supplies power is low,

When the number of consumers matched with the lowest selling price prosumer is two or more, the matching operation unit causes the plurality of consumers to match the sum of the sales price, which is the prosumer's bid price, and the sum of the transmission cost to a low customer,

The matching operation unit distributes the sales capacity of the prosumer by a ratio of the purchase capacity of each consumer when the combined price of the sum of the transmission cost and the sales price, which is the prosumer's bid price, is equal to two or more consumers, and the purchase capacity of each consumer Insufficient capacity is matched with the prosumer of the lowest combined price of the next ranking,

A power trading device may be provided in which the selling price of the prosumer is formed between a wholesale price and a retail price.

In addition, according to the present invention, a plurality of prosumers selling electric power inputs predetermined bid proposal contents to the power brokerage management server through each prosumer terminal, and a plurality of consumers purchasing electric power inputs their respective consumer information to each consumer terminal. Inputting into the power brokerage management server through; Matching a plurality of prosumers and consumers input from the power brokerage management server; If the prosumer and the consumer are matched, the prosumer supplies power to the matched consumer through a power transmission network of a power transaction management server operator, and in the step of matching the plurality of prosumers and consumers, the prosumer of the lowest price For example, when there are two or more consumers, a power transaction method between a prosumer and a consumer may be provided in which the combined price of the sum of the transmission cost, which is a transmission network usage fee, is first matched to the consumer with a lower bid price input by the prosumer.

In this way, the present invention can match a transaction between a prosumer that produces electric power and a consumer who desires to purchase electric power in an optimal condition.

The present invention is composed of a plurality of prosumer terminals, a plurality of consumer terminals, a power brokerage management server, and a power transaction management server to collect bidding information of each prosumer who wants to sell power, and collect consumer information of each consumer who wants to purchase power. Thus, the purchase cost of each consumer can be matched with the cheapest prosumer through the matching operation unit on the power brokerage management server.

The strategy brokerage management server of the present invention includes a price calculation unit, a contract conclusion information collection unit, and a real-time transaction calculation unit, and the price calculation unit includes a bid proposal collection unit, a consumer information collection unit, a transmission cost calculation unit, and a matching operation unit, The matching operation unit may first match when a location between a prosumer and a consumer is close or when the congestion of a power transmission network that supplies power is low.

The transmission cost calculation unit of the present invention performs tidal current calculation on the number of all matching cases between each consumer and the prosumer, calculates the transmission cost based on the tidal current calculation result, and calculates the calculated transmission cost to the sales price of the electric power input by the prosumer. Can be included.

The matching operation unit of the present invention may match a consumer with a lower summation price obtained by summing the power transmission cost to the selling price that is the prosumer's bid among the plurality of consumers when the number of consumers matched with the lowest selling price prosumer is two or more.

The matching operation unit of the present invention distributes the sales capacity of the prosumer by the ratio of the purchase capacity of each consumer when the combined price of the prosumer's bid price plus the transmission cost is equal to two or more, and the purchase of each consumer The insufficient capacity among the doses can be matched with the next ranked prosumer.

In the real-time transaction operation unit of the present invention, when the actual power generation amount of the contracted prosumer is less than the planned power generation amount, the contracted consumer may have the contracted consumer purchase retail power in the power market and charge the corresponding prosumer for an excess cost.

In the real-time transaction operation unit of the present invention, when the actual power generation amount of the contracted prosumer is greater than the planned power generation amount, the corresponding prosumer may cause the remaining power to be sold to the power market at a wholesale price.

In the real-time transaction calculation unit of the present invention, when the consumption of the contracted consumer is less than the planned consumption, the prosumer who has contracted with the consumer sells the remaining power after selling to the contracted consumer on the power market, and charges the difference to the contracted consumer. And, it is possible to subtract the transmission cost for the remaining amount of power from the difference to be charged.

In the real-time transaction operation unit of the present invention, when the contracted consumer's consumption amount is greater than the planned consumption amount, the consumer can purchase the insufficient consumption amount at retail price in the power market.

The present invention allows the power of each prosumer to be directly connected to the consumer so that a transaction price can be formed between the retail price and the wholesale price in the power market.

Thus, the present invention can provide benefits to both prosumers and consumers according to power transactions.

The operator of the power brokerage management server that brokers the power transaction between each prosumer and the consumer can generate revenue because it can receive an brokerage fee from the prosumer whose contract is concluded.

Since the present invention matches the prosumer that produces electricity and the consumer, it is possible to reduce the load on the power exchange and Korea Electric Power, and accordingly, it is possible not to produce and supply electricity only by Korea Electric Power, so that the power plant is enormous due to the additional construction of the power plant. You can reduce the cost.

1 is a block diagram showing a power transaction device between a prosumer and a consumer of the present invention.
2 is a block diagram of a power brokerage management server according to the present invention.
3 is a configuration diagram of a price calculation unit of the present invention.
4 is a block diagram of a real-time transaction operation unit of the present invention.
5 is a graph for explaining the setting of a prosumer selling price for explaining the present invention.
Figure 6 is a flow chart showing a power transaction method between a prosumer and a consumer of the present invention.

Hereinafter, specific details for carrying out the present invention will be described in detail with reference to the accompanying exemplary drawings.

1 is a block diagram showing a power transaction device between a prosumer and a consumer of the present invention. Referring to FIG. 1, the power transaction apparatus of the present invention may include a plurality of prosumer terminals 100, a power brokerage management server 200, a plurality of consumer terminals 300, and a power transaction management server 400.

The plurality of prosumer terminals 100, the power brokerage management server 200, the plurality of consumer terminals 300, and the power transaction management server 400 may be communicatively connected through a communication network.

The prosumer terminal 100 may receive power sales information from a prosumer, which is a power generation company that generates and consumes power, and makes a bidding through the power brokerage management server 200.

Referring to FIG. 2, the power brokerage management server 200 may include a household calculation unit 210, a contract conclusion information collection unit 220, and a real-time transaction calculation unit 230.

The power brokerage management server 200 may manage power brokerage apps.

The power brokerage app may be installed and used in a plurality of prosumer terminals 100 and consumer terminals 300.

The household calculation unit 210 may include a bid proposal collection unit 211, a consumer information collection unit 212, a transmission cost calculation unit 213, and a matching operation unit 214.

The bid proposal collection unit 211 may receive bid proposals from a plurality of prosumers.

In the bidding proposal submitted by each prosumer, the location, sales time, sales capacity, and sales price of each prosumer can be entered.

The location of each prosumer can be a location with a power generation facility.

The sales time can be set to the time at which each prosumer is able to sell the most expensive.

In other words, the selling price of each prosumer can be formed between the wholesale price and the retail price. Since it is obvious that the wholesale price is less than the retail price, the wholesale price may be the purchase price of pure power generation purchased by Korea Electric Power.

In addition, the retail price may be a price obtained by adding up related incidental costs, maintenance costs, transmission costs, etc. to the purchase price of pure power generation purchased by Korea Electric Power Corporation.

The wholesale price and retail price are prices formed in the power market, and the power market may be formed in a power exchange.

In a situation where a plurality of prosumers compete with each other and bid a sales price, the retail price in the power market is a fixed price, but the wholesale price may fluctuate over time.

Referring to FIG. 5, the horizontal axis represents time (T), the vertical axis represents market price (P), and as time (T) elapses, each prosumer can determine the selling price while viewing the market price trend at the power exchange.

That is, when the wholesale price (P2) in the power market fluctuates, competition may intensify during the peak load period, but the lower limit of the price increases compared to other time periods, and as a result, it is possible to sell at a higher price compared to other time periods. In other words, prosumers are likely to sell the most expensive during peak load times.

In FIG. 5, a light load time zone may be set before and after the point a1 of the wholesale price P2 curve, and a maximum load time zone may be set before and after the point b1.

The consumer information collection unit 212 may collect information of each consumer who wishes to purchase power, that is, the location of the consumer, a purchase time, and a purchase capacity.

The purchase time may mean a time at which each consumer can purchase at the cheapest price.

The purchase time is highly likely to purchase electricity at a lower cost compared to the maximum load time during the light load time period. This is because the range (a) of the prosumer's sales price is wide in the light load period from the point (a), so if there is adequate competition, the price is lowered sufficiently larger than the retail price (P1).

The transmission cost calculation unit 213 may perform current calculation on the number of all matching cases between each consumer and the prosumer.

The current calculation is to calculate the current and voltage of each transmission line, it is possible to find an optimum transmission line through the current calculation.

As a result of the tide calculation, the transmission cost, which is the fee for using the transmission network, can be calculated.

The total sales price may be the sum of the above transmission costs and the sales price submitted by each prosumer.

The matching operation unit 213 may preferentially match the prosumer with the lowest power purchase price from the perspective of the consumer. Here, two cases will be described as an example.

[Case 1]

For example, when two or more consumers match the prosumer with the lowest selling price of one person, the sales price, which is the bid price, and the consumer with low transmission cost may be matched first.

For example, a consumer may receive a list of the sum of the sales price and transmission cost of each prosumer as many as the number of cases matching all prosumers. At this time, the selling price of the list of each consumer is the same, but since the transmission cost varies depending on the location of the consumer, the list of consumers may be different.

However, in the case of a prosumer that is geographically close, a plurality of consumers may have a similar list, and two or more consumers may be matched to one prosumer.

In this case, a consumer having a lower combined price obtained by adding the sales price and the transmission cost in the matching operation unit 214 may be matched first.

Since the transmission cost uses the KEPCO power grid, it may become more expensive as the distance between the location of the prosumer and the location of the consumer increases.

Accordingly, a first consumer whose combined price (prosumer's sales price + transmission cost) is set low may be matched with the first prosumer, and thus, the second consumer may be matched with the second prosumer, which is the next ranked prosumer. .

In the following, a specific example is given and described.

For example, it is assumed that the power sales capacity of the prosumer P1 is 100 kwh, the purchase capacity of the first consumer is 80 kwh, and the purchase capacity of the second consumer is 50 kwh.

Table 1 below shows the list status received by the first consumer, and Table 2 shows the list status received by the second consumer.

Prosumer Sale Price Transmission cost Combined price P1 50 won/kwh 10 won/kwh KRW 60/kwh P2 50 won/kwh KRW 20/kwh KRW 70/kwh P3 KRW 70/kwh 5 won/kwh KRW 75/kwh

Prosumer Sale Price Transmission cost Combined price P1 50 won/kwh 5 won/kwh 55 won/kwh P3 KRW 70/kwh 10 won/kwh 80 won/kwh P2 50 won/kwh 30 won/kwh 80 won/kwh

Referring to Tables 1 and 2, a second consumer whose combined price of prosumer P1 is lower than that of the first consumer may be matched first. The second consumer can purchase 50kwh from prosumer P1 at 55 won/kwh, the first consumer purchases 50kwh from prosumer P1 at 60 won/kwh, and purchase the remaining 30kwh from prosumer P2 at 70 won/kwh. .

[Case 2]

There may be a case where two or more consumers have the same combined price, which is the bid price of each prosumer, which is the sum of the sales price and the transmission cost.

In this case, the matching operation unit 214 may allocate the sales capacity by the ratio of the purchase capacity of each consumer.

* For example, it is assumed that the power sales capacity of the prosumer P1 is 100kwh, the purchase capacity of the first consumer is 80kwh, and the purchase capacity of the second consumer is 50kwh.

Table 3 below shows the list status that the first consumer receives, and Table 4 shows the list status that the second consumer receives.

Prosumer Sale Price Transmission cost Combined price P1 50 won/kwh 10 won/kwh KRW 60/kwh P2 50 won/kwh KRW 20/kwh KRW 70/kwh P3 KRW 70/kwh 5 won/kwh KRW 75/kwh

Prosumer Sale Price Transmission cost Combined price P1 50 won/kwh 10 won/kwh KRW 60/kwh P3 KRW 70/kwh 10 won/kwh 80 won/kwh P2 50 won/kwh 30 won/kwh 80 won/kwh

Since the purchase capacity of the first consumer is 80 kwh and the purchase capacity of the second consumer is 50 kwh, the ratio of the first consumer and the second consumer may be 61.5: 38.5. The first consumer and the second consumer may each purchase power from the prosumer as much as a percentage of the purchased capacity.

Accordingly, the first consumer can purchase 61.5kwh from the prosumer P1 at 60 won/kwh, and purchase 18.5kwh, which is the shortfall in purchasing capacity, from the next prosumer P2 at 70 won/kwh.

In addition, since the second consumer has already matched the first consumer and the prosumer P1, they cannot purchase from the prosumer P1, and can purchase 11.5kwh, which is the shortfall in purchase capacity, from the next-order prosumer P3 for 80 won/kwh.

In other words, since the first consumer and the second consumer do not reach the desired purchase capacity, the insufficient capacity of the first consumer and the second consumer may be matched with the prosumer of the second lowest combined price.

On the other hand, as a result of performing such matching, a consumer who cannot finally purchase power due to lack of sales capacity of prosumers can purchase it in the power market (power transaction through a power exchange).

If the sales capacity that each prosumer has bid for is insufficient, the sales price may soar without a sales price limiting means, and thus the sales price may be limited to the price of the power market (retail price).

It can be said that the matching operation unit 214 first matches when the distance between the prosumer that sells power and the consumer who purchases power is close or when the congestion of the transmission network is low.

The contract signing information collection unit 220 may store a signing price, a signing capacity, and a signing time, which are transaction information of each matched pair (prosumer and consumer).

Referring to FIG. 4, the real-time transaction calculation unit 230 may include a real-time transaction calculation unit 231 and a settlement unit 232.

The real-time transaction in the present invention can be updated every 5 minutes.

The real-time transaction calculation unit 231 may collect additional transmission costs to a prosumer or a consumer corresponding to the cause of the error when an error occurs due to a difference between the planned transmission cost and the actual transmission cost, and calculate the distribution.

Examples of errors that can occur from the perspective of prosumers and consumers are as follows.

1) Prosumer's actual power generation is less than the planned power generation

In this case, after the consumer purchases the insufficient amount of generation at a retail price in the power market, the excess cost can be charged to the corresponding prosumer. At this time, the retail price of the electricity market includes the cost of transmission, so the prosumer does not need to compensate separately.

2) Prosumer's actual power generation is greater than the planned power generation

Since the actual generation amount is more than the planned generation amount, the remaining generation amount can be sold to the power market at a wholesale price. At this time, since the prosumer is sold in the power market, there is no transmission cost.

3) When the consumer's power consumption is less than the planned consumption

The prosumer who has contracted with the consumer can sell the remaining electricity to the power market and charge the contracted consumer for the difference.

However, since power was not actually transmitted from the billed amount, the transmission cost for the amount of power should be deducted.

4) When the consumer's power consumption exceeds the planned consumption

Consumers have to buy insufficient electricity consumption at retail prices in the electricity market. As the retail price includes the cost of transmission, additional costs may not be incurred. In other words, the shortfall in the consumer contract consumption to be supplied is paid by the matched prosumer at the retail price instead.

If the transmission cost of all participating prosumers increases due to the reduction in the actual generation amount compared to the planned generation amount, the transmission cost corresponding to the increase is paid, and if the transmission cost decreases, the reduction can be settled to offset the amount paid instead.

In other words, the reduction in actual power generation can increase or decrease the transmission cost of the prosumer. In other words, transmission costs may vary depending on the demand and supply of the power market, and the degree of congestion of the transmission grid. However, it is possible to calculate the amount of change in transmission cost through the calculation of the current for the decrease in the actual amount of power generation, and since the prosumer providing the cause can be traced, if the transmission cost increases due to the corresponding prosumer, the increase can be claimed.

On the other hand, when the actual amount of power generation increases, since the increase is sold to the power exchange, the power exchange may charge the transmission cost due to the change in congestion. However, in the case of a decrease in the actual amount of power generation, since the power that the prosumer sells to the consumer causes an increase or decrease in the transmission cost due to a shortage, in particular, if the amount of power generation increases, an increase may be requested.

For example, if the power grid is connected between the power generation facility and the customer and it is decided to transmit 100 kWh, the maximum capacity of the transmission network is limited to 50 kWh. Can only send electricity. At this time, even if the price is more expensive, the customer is inevitably purchased as much as 50 kWh from the power plant connected next to (or near).

Then, the congestion cost is the total supply cost when there is no transmission restriction (the supply cost when the power generation facility supplies 100 kWh)-the total supply cost when there is a transmission restriction (50 kW supply cost of the power generation facility and the 50 kWh supply cost of other power generation equipment). Sum). Therefore, the high degree of congestion may mean that the capacity of the transmission line has been used up. Usually, the utilization rate of the transmission grid is maintained at 70-80%.

When the error occurs in the above four cases, the prosumer may reduce the capacity of the next time to make a bid.

The power transaction management server 400 may be a server operated and managed by the Korea Electric Power Exchange that forms the power market or the Korea Electric Power Corporation that supplies power.

If the actual power generation is greater than the planned power generation, the prosumer may sell the additional power to the power market at wholesale prices and pay for the additional transmission.

The matched prosumer may supply corresponding sales power through the power transaction management server 400, and then supply power to the corresponding consumer through the transmission network of KEPCO, an operator of the power transaction management server 400.

At this time, KEPCO may collect a transmission network usage fee from the prosumer.

In addition, when a consumer matched with a specific prosumer pays an amount corresponding to the purchase price, the settlement unit 232 may deliver the amount paid by the consumer to the matched prosumer.

In addition, the settlement unit 232 may receive a brokerage fee of a predetermined ratio from the matched prosumer.

Based on the bidding proposals input by each prosumer, the power brokerage management server 200 may provide matching contract conclusion information through the corresponding prosumer terminal 100 and the consumer terminal 300.

On the other hand, the present invention may provide a method of trading power between a prosumer and a consumer.

Referring to FIG. 6, in the power transaction method of the present invention, a plurality of prosumers that sell power input predetermined bid proposals to the power brokerage management server through each prosumer terminal, and a plurality of consumers who purchase power each Inputting the consumer information of the power to the power brokerage management server through each consumer terminal (S1); Matching a plurality of prosumers and consumers input from the power brokerage management server (S2); When the prosumer and the consumer are matched, the prosumer may include supplying power to the matched consumer through a transmission network of a power transaction management server operator (S3).

In the step of matching the plurality of prosumers and consumers (S2), when there are two or more consumers for the lowest priced prosumer, the combined price of the sum of the transmission cost, which is the transmission network usage fee, to the bid price entered by the prosumer is low. First, you can make it match.

In the step of matching the plurality of prosumers and consumers (S2), when the sum of the sum of the sales price, which is the bid price input by the prosumer, and the transmission cost, which is the transmission network usage fee, is the same, the purchase capacity for each consumer After distributing the sales capacity by a ratio, the purchase capacity of the shortfall for each consumer's purchase capacity can be matched with the next ranked prosumer.

In the step of matching the plurality of prosumers and consumers (S2), when the locations of the prosumers and consumers are close or when the congestion of the power transmission network is low, the matching may be performed first.

In addition, in the step of matching the plurality of prosumers and consumers (S2), when the planned transmission cost and the actual transmission cost are different, the additional transmission cost may be collected by the cause provider.

In addition, in the step of matching the plurality of prosumers and consumers (S2), when the actual power generation amount of the prosumer matched with the consumer is less than the planned power generation amount, the prosumer purchases the insufficient sales capacity according to the prediction error in the power market at a retail price. This can be sold to matched consumers.

In the step of matching the plurality of prosumers and consumers (S2), when the actual power generation amount of the prosumer matched with the consumer is greater than the planned power generation amount, the prosumer may sell the amount of power remaining in the power market and pay additional transmission cost.

The present invention, for example, is not a method of selling a solar power generation device currently installed in an island area at a wholesale price to a power exchange or Korea Electric Power, but by allowing a direct transaction to be made with a consumer, thereby The transaction price can be formed at, and accordingly, mutually beneficial for both prosumers and consumers.

In addition, the operator of the power brokerage management server 200, which brokers power transactions between each prosumer and a consumer, can receive a brokerage fee from the prosumer to which the contract is concluded, thereby generating revenue.

In addition, since KEPCO does not produce and sell electricity exclusively, it is possible not to construct additional power plants due to a reduction in the final load, thereby reducing enormous power plant construction costs.

100: prosumer terminal
200: power brokerage management server 210: price calculation unit
211: bid proposal collection unit 212: consumer information collection unit
213: transmission cost calculation unit 214: matching operation unit
220: contract conclusion information collection unit 230: real-time transaction calculation unit
231: real-time transaction calculation unit 232: settlement unit
300: consumer terminal
400: power transaction management server
P: Market price P1: Retail price
P2: wholesale price S1,S2,S3: step
T: time

Claims (6)

A plurality of prosumer terminals managed by a prosumer selling generated power;
A power brokerage management server that communicates with the plurality of prosumer terminals and mediates power transactions of each prosumer;
A plurality of consumer terminals that communicate with the power brokerage management server to allow the consumer to purchase power in a desired condition;
A power transaction management server that manages to supply the corresponding power of the prosumer of the prosumer terminal to the matched consumer when a contract is concluded by matching a prosumer and a consumer through the plurality of prosumer terminals and consumer terminals;
Including,
The power brokerage management server matches the prosumer with the lowest power purchase price when the consumer and the prosumer are matched,
The power brokerage management server includes a real-time transaction calculation unit to calculate and settle real-time transactions and errors between the prosumer and the consumer,
The power brokerage management server,
A price calculation unit that sets the transaction price so that the electricity transaction is made,
It consists of a contract execution information collection unit that stores contract execution information according to the set transaction price,
The price calculation unit,
A bid proposal collection unit that collects bid proposals for electric power transactions entered by each prosumer,
A consumer information collection unit that collects information on consumers who purchase electricity,
Transmission cost calculation unit that calculates the cost incurred when using the transmission network for power supply,
It is composed of a matching operation unit that matches with a prosumer suitable for consumer information,
The matching operation unit allows first matching when the location between the prosumer and the consumer is close or when the congestion of the power transmission network that supplies power is low,
When the number of consumers matched with the lowest selling price prosumer is 2 or more, the matching operation unit causes the plurality of consumers to match the combined price of the sum of the transmission cost to the selling price that is the prosumer's bid price among the plurality of consumers, and
The matching operation unit distributes the sales capacity of the prosumer by a ratio of the purchase capacity of each consumer when the combined price of the sum of the transmission cost and the sales price, which is the prosumer's bid price, is equal to two or more consumers, and the purchase capacity of each consumer Insufficient capacity is matched with the prosumer of the lowest combined price of the next ranking,
A power trading device between a prosumer and a consumer, wherein the selling price of the prosumer is formed between a wholesale price and a retail price.
The method of claim 1,
In the real-time transaction operation unit,
If the contracted consumer's consumption is less than the planned consumption, the prosumer who has contracted with the consumer sells the remaining power after selling to the contracted consumer on the power market, charges the contracted consumer for the difference, and the difference from the charged difference A power trading device between a prosumer and a consumer, characterized in that the transmission cost for the remaining amount of power is subtracted.
The method of claim 1,
In the real-time transaction operation unit,
A power trading device between a prosumer and a consumer, characterized in that when the contracted prosumer's actual power generation amount is greater than the planned power generation amount, the corresponding prosumer sells the remaining power to the power market at a wholesale price.
The method of claim 1,
In the real-time transaction operation unit,
If the contracted consumer's consumption is less than the planned consumption, the prosumer who has contracted with the consumer sells the remaining power after selling to the contracted consumer on the power market, charges the contracted consumer for the difference, and the difference from the charged difference A power trading device between a prosumer and a consumer, characterized in that the transmission cost for the remaining amount of power is subtracted.
The method of claim 1,
In the real-time transaction operation unit,
A power trading device between a prosumer and a consumer, characterized in that when the contracted consumer's consumption is greater than the planned consumption, the consumer purchases the insufficient consumption at a retail price in the power market.
The method of claim 1,
The matching operation unit, when the planned transmission cost and the actual transmission cost are different, to collect the additional transmission cost to the cause provider and the power transaction device between the consumer and the prosumer.

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