KR102574493B1 - Apparatus and method for calculating system usage charge for peer to peer energy trading - Google Patents

Abstract

An apparatus and method for calculating system usage fees for P2P electricity trading are disclosed. An apparatus for calculating a system usage fee for P2P power transaction according to an embodiment includes an input acquisition unit that obtains input data for a power system used for P2P power transaction; an input data processing unit that processes the input data into a predefined format for bird analysis; a result acquisition unit for acquiring result data obtained by performing a current analysis on the input data; and a fee calculation unit that calculates a system usage fee for the P2P electricity transaction based on the resulting data.

Description

System usage fee calculation device and method for P2P electricity trading {APPARATUS AND METHOD FOR CALCULATING SYSTEM USAGE CHARGE FOR PEER TO PEER ENERGY TRADING}

The disclosed embodiments relate to a technology for calculating a fee generated according to system use in P2P electricity transaction.

Thanks to the renewable energy-based Distributed Energy Resources (DERs) dissemination policy, the dissemination of distributed resources is active worldwide. Accordingly, research on new technologies such as Micro Grid (MG), Virtual Power Plant (VPP), and P2P (Peer-to-Peer) electricity trading is also active.

Among them, studies related to P2P electricity trading only focus on algorithms that determine transaction prices or match targets for P2P electricity transactions, and technology that predicts stable transaction volumes by considering the intermittent power generation characteristics of renewable energy. Related research is lacking.

Currently, the fee for P2P electricity transaction is set at a fixed rate notified in advance by the power company. Accordingly, there is a problem in that the actual usage of the system cannot be considered when measuring the fee according to the P2P electricity transaction.

Some are researching the technology of calculating fees in the early stage, but there are limitations in limiting P2P transaction targets to distributed resource installation customers, or applying only to large-scale power markets or specific networks.

On the other hand, since electric power companies, which are currently key related companies in P2P power trading, are skeptical about participating in P2P power trading, it is necessary to calculate an appropriate fee for power companies in order to activate P2P power trading.

Republic of Korea Patent Registration No. 10-1925723 (registered on December 5, 2018)

Disclosed embodiments are to provide an apparatus and method for calculating a system usage fee for P2P electricity transaction.

A system usage fee calculation method for P2P power transaction according to an embodiment includes obtaining input data for a power system used for P2P power transaction; processing the input data into a predefined format for bird analysis; Obtaining data as a result of the current analysis performed on the input data; and calculating a system usage fee for the P2P electricity transaction based on the resulting data.

The input data may include data on the total amount of power used by the customer using the P2P power transaction before the P2P power transaction and data on matching capacity corresponding to the P2P power transaction amount.

The result data includes first result data in which the flow analysis is performed on the total amount of electricity and second result data in which the flow analysis is performed on the non-matching capacity obtained by subtracting the matching capacity corresponding to the P2P power transaction amount from the total amount of electricity. can include

In the step of calculating the system usage fee, the system usage fee may be calculated based on a difference between the first result data and the second result data.

The calculating of the system usage fee may include calculating system effect data of the matching capacity on the power system based on a difference between the first result data and the second result data; and calculating a system usage fee for each customer for the P2P electricity transaction based on the system effect data and a predefined power system analysis method.

The predefined power system analysis method may calculate the system usage fee based on the contribution of each line in the power system.

The predefined power system analysis method may calculate the system usage fee based on a ratio of the amount of power traded through each line among the amount of power according to the P2P power transaction.

The predefined power system analysis method may include at least one of Bialek's Tracing Method and EBE Method (Equivalent Bilateral Exchange Method).

An apparatus for calculating a system usage fee for P2P power transaction according to an embodiment includes an input unit for obtaining input data for a power system used for P2P power transaction; an input data processing unit that processes the input data into a predefined format for bird analysis; a result unit for acquiring result data obtained by performing a current analysis on the input data; and a fee calculation unit that calculates a system usage fee for the P2P electricity transaction based on the resulting data.

The input data may include data on the total amount of power used by the customer using the P2P power transaction before the P2P power transaction and data on matching capacity corresponding to the P2P power transaction amount.

The result data includes first result data in which the flow analysis is performed on the total amount of electricity and second result data in which the flow analysis is performed on the non-matching capacity obtained by subtracting the matching capacity corresponding to the P2P power transaction amount from the total amount of electricity. can include

The fee calculation unit may calculate the system usage fee based on a difference between the first result data and the second result data.

The fee calculation unit calculates system effect data that the matching capacity has on the power system based on the difference between the first result data and the second result data, and calculates the system effect data and a predefined power system analysis method. Based on this, it is possible to calculate a system usage fee for each customer for the P2P electricity transaction.

The predefined power system analysis method may calculate the system usage fee based on the contribution of each line in the power system.

The predefined power system analysis method may calculate the system usage fee based on a ratio of the amount of power traded through each line among the amount of power according to the P2P power transaction.

The predefined power system analysis method may include at least one of Bialek's Tracing Method and EBE Method (Equivalent Bilateral Exchange Method).

According to the disclosed embodiments, it is possible to compensate for the power company's revenue reduction through an appropriate fee, thereby increasing the power company's acceptance of P2P power trading, and P2P power traders can make it available to anyone regardless of the transaction size. As far as possible, it is possible to activate P2P transactions by lowering the entry barrier for P2P transactions.

In addition, fair fees can be calculated by allocating variable costs through analysis of the systematic impact of transaction unit time beyond the conventional fixed cost allocation method.

1 is a block diagram for explaining a system usage fee calculation device for P2P electricity transaction according to an embodiment.
2 is an exemplary diagram for explaining a system usage fee calculation process for P2P electricity trading according to an embodiment;
3 is a flowchart for explaining a method of calculating a system usage fee for P2P electricity transaction according to an embodiment
4 is a flowchart for explaining a method of calculating a system usage fee for P2P electricity transaction according to an additional embodiment;
5 is a block diagram for illustrating and describing a computing environment including a computing device according to an exemplary embodiment;

Hereinafter, specific embodiments of an embodiment will be described with reference to the drawings. The detailed descriptions that follow are provided to provide a comprehensive understanding of the methods, devices and/or systems described herein. However, this is only an example and the present invention is not limited thereto.

In describing one embodiment, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the subject matter of an embodiment, the detailed description will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or operator. Therefore, the definition should be made based on the contents throughout this specification. Terminology used in the detailed description is for describing only one embodiment and should in no way be limiting. Unless expressly used otherwise, singular forms of expression include plural forms. In this description, expressions such as "comprising" or "comprising" are intended to indicate any characteristic, number, step, operation, element, portion or combination thereof, one or more other than those described. It should not be construed to exclude the existence or possibility of any other feature, number, step, operation, element, part or combination thereof.

1 is a block diagram illustrating an apparatus 100 for calculating a system usage fee for P2P electricity transaction according to an embodiment.

Referring to FIG. 1 , the apparatus 100 for calculating a system usage fee for P2P electricity transaction according to the illustrated example includes an input acquisition unit 110, an input data processing unit 120, a result acquisition unit 130, and a fee calculation unit 140. ).

In the following embodiments, each component may have different functions and capabilities other than those described below, and may include additional components other than those not described below.

In addition, in the following embodiments, the input acquisition unit 110, the input data processing unit 120, the result acquisition unit 130, and the fee calculation unit 140 are implemented using one or more physically separated devices, It may be implemented by one or more processors or a combination of one or more processors and software, and unlike the illustrated example, specific operations may not be clearly distinguished.

In the following embodiments, 'P2P (Peer to peer) power transaction' means a system in which power is shared between individuals. It refers to an energy system in which individuals and institutions directly produce and consume power, and trade surplus power with each other, unlike the existing method of unilaterally purchasing and using power from power generation companies.

The input obtaining unit 110 acquires input data about a power system used for P2P power trading.

Specifically, the input acquisition unit 110 may obtain necessary information when analyzing a current to calculate a system usage fee.

Accordingly, the input acquisition unit 110 may obtain location information between matched P2P power traders through a bus, and may obtain other system-related information such as reactance and resistance of the line.

In this case, the system-related information may be information about a system commonly used by P2P power traders. This originates from the fact that matching between P2P electricity traders is made between traders located in the same system to calculate a fair fee.

On the other hand, matching between P2P power participants may be preferentially performed between customers with a short distance in order to calculate a reasonable fee.

According to an embodiment, the input acquisition unit 110 may include, as input data, data on the total amount of power used by customers using P2P power trading before P2P power trading and data on matching capacity corresponding to the amount of P2P power trading. can

However, the input acquisition unit 110 may obtain input data from the electric power company in order to obtain accurate system information in preparation for a case where current analysis is impossible due to the existence of customers who do not participate in P2P transactions. In addition, current analysis of the system can also be performed by the power company.

The input data processing unit 120 processes the input data into a predefined format for bird analysis.

Specifically, since the system usage fee may be made based on the power flow analysis result, the input data processing unit 120 may process the acquired input data according to a predefined current analysis tool input system for use in current analysis there is.

In order to calculate fair grid usage fees for P2P electricity trading, it is necessary to allocate grid usage fees according to matching capacity. However, even if the input acquisition unit 110 acquires the data on the matching capacity, if the current analysis is not preceded for the data on the matching capacity, a fee may not be calculated.

Accordingly, in order to calculate the fee, it is necessary to analyze the matching capacity and the flow of matching capacity.

According to an embodiment, the current analysis of the matching capacity may be performed through the current analysis based on the total usage before P2P transaction and the current analysis based on the non-matching capacity.

2 is an exemplary diagram for explaining a system usage fee calculation process for P2P electricity transaction according to an embodiment.

According to an embodiment, the result obtaining unit 130 obtains result data obtained by performing a current analysis on the input data.

Referring to FIG. 2 , total usage before P2P transaction, matching capacity, and non-matching capacity can be distinguished.

Specifically, the total consumption (A) before P2P transaction can mean the sum of the amount of electricity consumed and generated by the P2P electricity customer before the P2P transaction, and the matching capacity (a) is the amount of electricity traded during the P2P transaction (a). , and the non-matching capacity (b) may mean the amount of power remaining after subtracting the matching capacity (a) from the total usage (A) before P2P electricity transaction.

Therefore, the current analysis for the matching capacity (a) can be calculated through two current analysis. Specifically, it can be calculated by performing a first flow analysis based on the total usage (A) before P2P transaction, and then performing a second flow analysis based on the non-matching capacity (b).

That is, the system effect on the matching capacity (a) can be identified through the improvement of the system effect from the second result to the first result.

Therefore, the result acquisition unit 130 according to an embodiment performs a current analysis on the non-matching capacity obtained by subtracting the matching capacity corresponding to the P2P power transaction amount from the first result data for which the current analysis is performed on the total amount of electricity and the total amount of electricity. The performed second result data may be obtained as result data.

In this case, the power distribution system may be a general radial type, and other types such as a loop type and a mesh type may be present. However, since the methodology for current analysis may vary depending on the actual system structure, the method for current analysis is, for example, the Gauss-Seidel Method, the Newton-Raphson method ), etc., an appropriate method can be applied depending on the situation of the system.

Referring to FIG. 2 , a P2P trading platform can be described. TR (210) is an abbreviation of Transformer and may mean a transformer linked to an upper system. Numbers 1 to 18 may mean the number of each bus 220.

The bus may indicate a movement path of electricity traded between P2P power participants when P2P power transaction is established, and may indicate relative positions of P2P power transaction participants and non-participants using the same system.

Specifically, in FIG. 2, system users connected to buses 3, 5, 6, 7, 8, 11, 12, 13, 14, 15, 16, and 18 represent P2P power transaction participants, and 4, 9, 10, Grid users associated with bus #17 may represent non-participants in P2P electricity transaction.

In particular, grid users connected to buses 3, 5, 8, 11, 13, 14, and 18 represent electricity sellers who sell generated or surplus electricity among P2P electricity transaction participants, and bus numbers 6, 7, 12, 15, and 16 Grid users associated with the bus may represent P2P power purchasers.

In addition, a P2P electricity transaction can be established between a P2P electricity seller and a buyer, and FIG. 2 can indicate a matched situation between a P2P electricity seller and a buyer through numbers and routes displayed on each bus.

According to an embodiment, the proportion of transactions may be calculated according to Equation 1 below. At this time, the proportion of transactions represents equivalent bilateral exchanges.

[Equation 1]

At this time, is the share of transactions, is the demand capacity versus the generation capacity of the entire system, is the generation capacity in bus i, represents the load on bus j.

The fee calculation unit 140 calculates a system usage fee for P2P electricity transaction based on the resulting data.

According to an embodiment, the fee calculation unit 140 may calculate the system use fee based on the difference between the first result data and the second result data in order to allocate the system use fee according to the matching capacity and to calculate the fair fee. there is.

According to another embodiment, the fee calculation unit 140 calculates the grid effect data that the matching capacity has on the power system based on the difference between the first result data and the second result data for the system usage fee, and calculates the system effect data and the Based on the defined power system analysis method, a system usage fee for each customer for P2P electricity transaction can be calculated.

According to an embodiment, the current analysis result may include a cost for each line used in P2P electricity trading.

At this time, the cost for each line may be calculated by considering the unit price (KRW/h) or unit price (KRW/kWh) through investment cost-based annual cost calculation for system construction.

In addition, the cost of each line may be calculated by considering the ratio of each line allocated to all generators and loads. For example, the above ratio may be equally distributed to each line or distributed according to the total contract capacity for fair fee allocation based on the investment cost for system construction.

According to an embodiment, a predefined power system analysis method may calculate the system usage fee based on the contribution of each line.

According to an embodiment, a predefined power system analysis method may calculate a system usage fee based on a ratio of the amount of power transferred for each line among the amount of power according to P2P power transaction.

According to an embodiment, the predefined power system analysis method may include at least one of Bialek's Tracing Method and EBE Method (Equivalent Bilateral Exchange Method).

In the following embodiment, the Bialek tracking method may reflect the locational characteristics of a P2P electricity seller or buyer, and may be particularly applied to fee allocation in a system structure in the form of a mesh.

On the other hand, in the following embodiments, the two-way equivalent exchange method not only reflects the above-described locational characteristics well, but also can be applied to a radial type, which is a general distribution system structure, because there are few restrictions on the system structure, so it can be applied to various system structures.

Specifically, the method of allocating the system usage contribution and fee through the two-way equivalent exchange method is as follows.

(1) Non-zero equivalent bilateral exchanges refer to the proportion of each transaction; calculated via

Specifically, the non-zero bilateral equivalent exchange process is a step of calculating the usage amount of each bus with respect to the total system usage amount, and actual usage information at analysis time can be extracted.

(2) The line flow used by each equivalent exchange can be identified by calculating the line flow distribution factor.

(3) Calculate the ratio of each equivalent exchange to the total utilization from the perspective of each line

Through this process, it is possible to allocate a usage fee for each line to each generator and load.

(4) Additionally, the net-flow for an arbitrary line k is further considered to reflect the actual situation of the system.

At this time, the net current flow on any line k can be calculated by Equation 2 below.

[Equation 2]

At this time, is the net current flow on line k, represents the line current distribution coefficient.

Specifically, the line flow distribution coefficient can be calculated by Equation 3 below.

[Equation 3]

At this time, is the conductance matrix, represents a vector of phase angles.

In addition, the system usage fee may be calculated in consideration of proper distribution to P2P electricity traders. Meanwhile, P2P electricity sellers and buyers may have different fees depending on their contributions. However, the system usage fee may be calculated in consideration of whether fees distributed between the P2P electricity seller and the purchaser are identical. That is, the total amount of fees of the P2P electricity sellers may be calculated to match the total amount of fees of the P2P electricity buyers.

According to one embodiment, to calculate the fee A process of checking the amount of transmission on line k may be required. Therefore, the amount of usage per line for calculating the ratio of each equivalent exchange to the total utilization rate from the perspective of each line can be calculated by Equation 4 below.

[Equation 4]

At this time represents the usage per line.

On the other hand, according to one embodiment, each power generation as the total amount of line k by all equivalent exchanges included in generator i ( Each load, which is the total usage of line k by all equivalent exchanges, including the usage and load j of line k according to ) ) can be calculated by Equation 5 below.

[Equation 5]

At this time, represents the usage of line k according to power generation, represents the usage of line k different to the load.

Also, according to an embodiment, the total usage of line k for all equivalent exchanges may be calculated by Equation 6 below.

[Equation 6]

At this time, represents the total usage of line k.

Also, according to an embodiment, the line ratio may be calculated by Equation 7 below.

[Equation 7]

At this time is the line ratio represents the cost of a particular line.

denotes the total cost consumed from the usage of line k. Considering that reactance can represent the transmittable amount of power, the line cost may be calculated through, for example, the reactance of the system.

In addition, according to an embodiment, considering that the line cost for line k can be calculated through the line ratio, according to the equivalent exchange including generator i, all power generation ( ) According to the equivalent exchange including the transmission usage charge (TUC) and the load j according to the total line usage related to the load ( ), the TUC according to the total line usage related to can be calculated by Equation 8 below.

[Equation 8]

At this time, is the transmission cost according to the total line usage related to power generation, represents the transmission cost according to the total line usage related to the load.

According to an embodiment, the fee for matching capacity may be calculated based on the total amount of usage and P2P power transaction volume before P2P power transaction. Therefore, the transmission cost allocated from the power company of bus j to the P2P power seller and the transmission cost according to the load of bus j can be calculated by Equation 9 below.

[Equation 9]

At this time, is the transmission cost according to the total line use related to power generation, but the cost considering P2P electricity transaction, is the transmission cost according to the total line usage related to power generation, denotes the total line cost associated with the mismatched capacity out of generation. Likewise, is the transmission cost according to the total line usage related to the load, but the cost considering P2P power transaction, is the transmission cost according to the total line usage related to the load, is the total line cost associated with unmatched capacity under load.

3 is a flowchart illustrating a method of calculating a system usage fee for P2P electricity transaction according to an embodiment.

The method shown in FIG. 3 may be performed by the system usage fee calculation apparatus 100 for P2P electricity transaction shown in FIG. 1 .

Referring to FIG. 3 , the system usage fee calculation apparatus 100 for P2P power transaction obtains input data about the power system used for P2P power transaction (310).

Thereafter, the system usage fee calculation apparatus 100 for P2P electricity transaction processes the input data into a predefined format for current analysis (320).

Thereafter, the system usage fee calculation apparatus 100 for P2P electricity transaction obtains result data obtained by performing a current analysis on the input data (330).

Thereafter, the system usage fee calculation apparatus 100 for P2P electricity transaction calculates a system usage fee for P2P electricity transaction based on the result data (340).

4 is a flowchart for explaining a system usage fee calculation method for P2P electricity transaction according to an additional embodiment.

Referring to FIG. 4 , the system usage fee calculation apparatus 100 for P2P electricity transaction may calculate system effect data of the matching capacity on the power system based on a difference between first result data and second result data. Yes (410).

Thereafter, the system usage fee calculation apparatus 100 for P2P electricity transaction may calculate a system usage fee for each customer for P2P electricity transaction based on the system effect data and a predefined power system analysis method (420).

In FIGS. 3 and 4 shown above, the method is divided into a plurality of steps, but at least some of the steps are performed in reverse order, performed together with other steps, omitted, or divided into detailed steps. , Or one or more steps not shown may be added and performed.

5 is a block diagram illustrating a computing environment 10 including a computing device 12 according to an exemplary embodiment. In the illustrated embodiment, each component may have different functions and capabilities other than those described below, and may include additional components other than those not described below.

The illustrated computing environment 10 includes a computing device 12 . In one embodiment, the computing device 12 may be one or more components included in the system usage fee calculation device 100 for P2P electricity trading.

Computing device 12 includes at least one processor 14 , a computer readable storage medium 16 and a communication bus 18 . Processor 14 may cause computing device 12 to operate according to the above-mentioned example embodiments. For example, processor 14 may execute one or more programs stored on computer readable storage medium 16 . The one or more programs may include one or more computer-executable instructions, which when executed by processor 14 are configured to cause computing device 12 to perform operations in accordance with an illustrative embodiment. It can be.

Computer-readable storage medium 16 is configured to store computer-executable instructions or program code, program data, and/or other suitable form of information. Program 20 stored on computer readable storage medium 16 includes a set of instructions executable by processor 14 . In one embodiment, computer readable storage medium 16 includes memory (volatile memory such as random access memory, non-volatile memory, or a suitable combination thereof), one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, other forms of storage media that can be accessed by computing device 12 and store desired information, or any suitable combination thereof.

Communications bus 18 interconnects various other components of computing device 12, including processor 14 and computer-readable storage medium 16.

Computing device 12 may also include one or more input/output interfaces 22 and one or more network communication interfaces 26 that provide interfaces for one or more input/output devices 24 . An input/output interface 22 and a network communication interface 26 are connected to the communication bus 18 . Input/output device 24 may be coupled to other components of computing device 12 via input/output interface 22 . Exemplary input/output devices 24 include a pointing device (such as a mouse or trackpad), a keyboard, a touch input device (such as a touchpad or touchscreen), a voice or sound input device, various types of sensor devices, and/or a photographing device. input devices, and/or output devices such as display devices, printers, speakers, and/or network cards. The exemplary input/output device 24 may be included inside the computing device 12 as a component constituting the computing device 12, or may be connected to the computing device 12 as a separate device distinct from the computing device 12. may be

Although the present invention has been described in detail through representative examples above, those skilled in the art can make various modifications to the above-described embodiments without departing from the scope of the present invention. will understand Therefore, the scope of the present invention should not be limited to the described embodiments and should not be defined, and should be defined by not only the claims to be described later, but also those equivalent to these claims.

10: Computing environment
12: computing device
14: Processor
16: computer readable storage medium
18: communication bus
20: program
22: I/O interface
24: I/O device
26: network communication interface
100: Grid usage fee calculation device for P2P electricity transaction
110: input acquisition unit
120: input data processing unit
130: result acquisition unit
140: fee calculation department
210: grid-connected transformer
220: Bus

Claims (16)

Acquiring input data for a power system used for P2P power trading;
processing the input data into a predefined format for bird analysis;
Obtaining data as a result of the current analysis performed on the input data; and
Calculating a system usage fee for the P2P power transaction based on the resultant data;
The input data is
Data on the total amount of electricity used by the customer using the P2P power transaction before the P2P power transaction and data on matching capacity corresponding to the P2P power transaction amount,
The resulting data,
Including first result data in which the current analysis is performed on the total amount of electricity and second result data in which the flow analysis is performed on the non-matching capacity obtained by subtracting the matching capacity corresponding to the P2P power transaction amount from the total amount of electricity,
In the step of calculating the system usage fee,
Calculating system effect data of the matching capacity on the power system based on a difference between the first result data and the second result data; and
Calculating a grid usage fee for each customer for the P2P electricity transaction based on the grid effect data and a predefined power system analysis method.
delete delete delete delete The method of claim 1,
The predefined power system analysis method,
A system usage fee calculation method for P2P electricity transaction, wherein the system usage fee is calculated based on the contribution of each line in the power system.
The method of claim 6,
The predefined power system analysis method,
The grid usage fee calculation method for P2P electricity trading, wherein the grid usage fee is calculated based on the ratio of the amount of electricity traded through each line among the amount of electricity according to the P2P electricity transaction.
The method of claim 1,
The predefined power system analysis method,
A method for calculating grid usage fees for P2P electricity trading, including at least one of Bialek's Tracing Method and EBE Method (Equivalent Bilateral Exchange Method).
an input acquisition unit that acquires input data about a power system used for P2P power trading;
an input data processing unit that processes the input data into a predefined format for bird analysis;
a result acquisition unit for acquiring result data obtained by performing a current analysis on the input data; and
And a fee calculation unit for calculating a system usage fee for the P2P electricity transaction based on the result data,
The input data is
Data on the total amount of electricity used by the customer using the P2P power transaction before the P2P power transaction and data on matching capacity corresponding to the P2P power transaction amount,
The resulting data,
Including first result data in which the current analysis is performed on the total amount of electricity and second result data in which the flow analysis is performed on the non-matching capacity obtained by subtracting the matching capacity corresponding to the P2P power transaction amount from the total amount of electricity,
The fee calculation department,
Based on the difference between the first result data and the second result data, system effect data that the matching capacity has on the power system is calculated, and the P2P power is based on the system effect data and a predefined power system analysis method. A grid usage fee calculation device for P2P electricity transaction that calculates the grid usage fee for each customer for the transaction.
delete delete delete delete The method of claim 9,
The predefined power system analysis method,
A system usage fee calculation device for P2P electricity transaction, which calculates the system usage fee based on the contribution of each line in the power system.
The method of claim 14,
The predefined power system analysis method,
A system usage fee calculation device for P2P electricity transaction, which calculates the system usage fee based on a ratio of the amount of electricity traded through each line among the amount of electricity according to the P2P electricity transaction.
The method of claim 9,
The predefined power system analysis method,
An apparatus for calculating grid usage fees for P2P electricity trading, including at least one of Bialek's Tracing Method and EBE Method (Equivalent Bilateral Exchange Method).