KR20230000320A - Apparatus and method for managing congestion of electric distribution network - Google Patents

Abstract

Disclosed is an apparatus and a method for managing congestion of an electric distribution system. According to an embodiment, the apparatus for managing congestion of an electric distribution system comprises: an equivalent system generation unit which generates an equivalent system including a plurality of groups based on each distributed power source connected to a target distribution system and one or more connection lines connected between the plurality of groups for the target distribution system; a first calculation unit which calculates the degree of contribution of each distributed power source for a specific group among the plurality of groups based on current flow analysis results for the target distribution system; a second calculation unit which calculates the magnitude of the power supplied by each distributed power source to a specific line within the target distribution system using the current flow analysis results and the degree of contribution; a third calculation unit which calculates the sensitivity of each distributed power source for the line based on a change in the effective power supplied to the line by each distributed power source due to capacity changes and a change in the total power supplied to the line by all distributed power sources; and a network usage cost calculation unit which determines the network usage cost for each distributed power source using the sensitivity. Therefore, the apparatus and the method for managing congestion of an electric distribution system can reduce the congestion of the electric distribution system without additional equipment.

Description

Distribution system congestion management device and method {APPARATUS AND METHOD FOR MANAGING CONGESTION OF ELECTRIC DISTRIBUTION NETWORK}

The disclosed embodiments relate to techniques for managing congestion in a power distribution system.

In accordance with the government's energy conversion policy, small-scale distributed power generation based on renewable energy is rapidly spreading. Distributed power generation, however, has a limitation in that the amount of power generation varies intermittently depending on the environment due to its high dependence on the climate. Accordingly, distributed power generation causes an imbalance between power production and demand, thereby threatening system stability. In addition, surplus power generated due to this imbalance causes overvoltage in the distribution system, and the induced overvoltage causes failure and shortening of the life span of electrical equipment connected to the system.

As a solution to this, some are using a method of limiting the installation capacity of distributed power in a distribution system with a high ratio of distributed power or adjusting reactive power within the system. Or, on the other hand, in order to limit the amount of active power flowing into the distribution line, distribution line expansion, reactive power supply at connection points, distributed power active power supply control, pole transformer tap adjustment, energy storage system (ESS; Energy Storage System) energy storage methods, etc.

However, the distribution line expansion and pole-mounted transformer tap adjustment methods for preventing overvoltage have disadvantages in that high cost is required and responsiveness is poor. In addition, the system stabilization ESS operation plan has the disadvantage of requiring a lot of cost and restrictions on the installation place.

Accordingly, as the most realistic countermeasure to prevent overvoltage, a method of adjusting the output of the distributed power supply is mainly adopted. However, according to the method of adjusting the output of the distributed power source, voluntary management of the output of the distributed power source through market participation is encouraged, but there is a limitation that the output of the distributed power source is forcibly limited in the event of an overvoltage.

In the end, the output limiting measures used as a realistic countermeasure in case of overvoltage are inefficient in terms of power generation, and there are no clear standards for how to compensate for the loss of brokerages due to the current output limit, resulting in a number of civil complaints. If this situation persists, it may lead to avoidance of investment in distributed power generation, leading to failure of policies related to energy conversion.

Republic of Korea Patent Registration No. 10-2120718 (Registration on June 3, 2020)

Disclosed embodiments are to provide an apparatus and method for managing congestion in a power distribution system.

An apparatus for managing distribution system congestion according to an embodiment generates an equivalent system including a plurality of groups for a target distribution system and one or more connection lines connected between the plurality of groups for the target distribution system based on each distributed power source connected to the target distribution system. system creation unit; a first calculation unit that calculates a contribution of each distributed power source to a specific group among the plurality of groups based on a current analysis result for the target distribution system; a second calculation unit for calculating the amount of power supplied to a specific line in the target distribution system by each distributed power source using the current analysis result for the target distribution system and the contribution; Calculating the sensitivity of each distributed power source to the line based on the amount of change in active power supplied to the line for each distributed power source according to the change in capacity of each distributed power source and the amount of change in total power supplied to the line 3 calculation unit; and a system usage fee calculation unit that calculates a network usage cost of each of the distributed power sources using the sensitivity.

The equivalent system generator may classify the plurality of buses into the plurality of groups based on whether the currents of each of the plurality of buses included in the target distribution system are the same.

The equivalent grid generation unit assigns a rank to the plurality of groups based on the number of distributed power sources supplying power to each of the plurality of groups, generates the connection line based on the configuration of the target distribution system, and It is possible to determine the direction of the power of the equivalent system based on.

The contribution may be calculated as a ratio of power supplied to the specific group by each distributed power source to total power supplied to the line.

The first calculation unit calculates the contribution using the amount of power supplied to the specific group from each distributed power source and the amount of power flowing through a connection line connected to the specific group, The amount of power flowing through the connection line connected to the specific group may be obtained from a current analysis result for the target distribution system.

The second calculation unit calculates the size of the power supplied to the line by each distributed power source based on the size of the total power supplied to the line and the contribution, and the size of the total power supplied to the line is the target It can be obtained from the current analysis result for the power distribution system.

The third calculation unit may calculate the amount of change in total power supplied to the line as a difference between the total amount of power supplied to the line after the change and the amount of total power supplied to the line before the change.

The third calculator may calculate the sensitivity based on a ratio between the amount of change in the active power and the amount of change in power supplied to the line by all distributed power sources.

The grid fee calculation unit calculates the maximum and minimum values of sensitivity that increase or decrease according to the change in capacity of each distributed power source, normalizes the sensitivity using the maximum value and the minimum value, and calculates the grid fee using the normalized sensitivity. can be calculated

The grid usage fee calculator may calculate the grid usage fee in proportion to the normalized sensitivity.

Distribution system congestion management method according to an embodiment includes generating an equivalent system including a plurality of groups for a target distribution system and one or more connection lines connected between the plurality of groups based on each distributed power source connected to the target distribution system. ; calculating a contribution of each distributed power source to a specific group among the plurality of groups based on a current analysis result for the target distribution system; Calculating the amount of power supplied to a specific line in the target distribution system by each distributed power source using a current analysis result for the target distribution system and the contribution; Calculating the sensitivity of each distributed power source to the line based on the amount of change in active power supplied to the line for each distributed power source according to the change in capacity of each distributed power source and the amount of change in total power supplied to the line ; and calculating a network usage cost of each distributed power source using the sensitivity.

In the generating step, the plurality of buses may be classified into the plurality of groups based on whether the current of each of the plurality of buses included in the target power distribution system is the same.

The generating may include assigning a rank to the plurality of groups based on the number of distributed power sources supplying power to each of the plurality of groups, generating the connection line based on the configuration of the target distribution system, and performing the ranking. It is possible to determine the direction of the power of the equivalent system based on.

The contribution may be calculated as a ratio of power supplied to the specific group by each distributed power source to total power supplied to the line.

In the calculating of the contribution, the contribution is calculated using the amount of power supplied to the specific group from each distributed power source and the amount of power flowing through a connection line connected to the specific group, The size and the size of the power flowing through the connection line connected to the specific group may be obtained from the current analysis result for the target distribution system.

The step of calculating the size of the power calculates the size of the power supplied to the line by each distributed power source based on the size of the total power supplied to the line and the contribution, and calculates the size of the total power supplied to the line. The size can be obtained from the current analysis result for the target power distribution system.

In the step of calculating the sensitivity, a change in total power supplied to the line may be calculated as a difference between the total power supplied to the line after the change and the total power supplied to the line before the change.

In the calculating of the sensitivity, the sensitivity may be calculated based on a ratio between the amount of change in the active power and the amount of change in total power supplied to the line.

The calculating may include calculating a maximum value and a minimum value of sensitivity that increase or decrease according to a change in capacity of each distributed power supply; Normalizing sensitivity using the maximum value and the minimum value; and calculating the system usage fee using the normalized sensitivity.

In the calculating step, the grid usage fee may be calculated in proportion to the normalized sensitivity.

According to the disclosed embodiments, by allocating a network usage cost for each distributed power source in proportion to the degree of congestion caused by each distributed power source in the distribution system, congestion can be voluntarily managed for each distributed power source. can be encouraged

According to the disclosed embodiments, by allocating a network usage cost for each distributed power source in proportion to the degree of congestion caused by each distributed power source in the distribution system, it is possible to reduce the degree of congestion in the distribution system without additional facilities.

1 is a block diagram for explaining an apparatus for managing congestion in a power distribution system according to an exemplary embodiment;
2 is an exemplary view for explaining a process of generating an equivalent system according to an embodiment
3 is a flowchart for explaining a method for managing congestion in a distribution system according to an exemplary embodiment;
4 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 managing congestion in a power distribution system according to an exemplary embodiment.

Referring to FIG. 1 , the illustrated distribution system congestion management apparatus 100 includes an equivalent grid generating unit 110, a first calculating unit 120, a second calculating unit 130, a third calculating unit 140, and a grid. It includes a usage fee calculation unit 150 .

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 embodiment, the equivalent system generation unit 110, the first calculation unit 120, the second calculation unit 130, the third calculation unit 140, and the system usage fee calculation unit 150 are physically It may be implemented using one or more separate devices, or may be implemented by one or more processors or a combination of one or more processors and software, and may not be clearly distinguished in specific operations, unlike the illustrated example.

The equivalent system generation unit 110 generates an equivalent system including a plurality of groups and one or more connection lines connected between the plurality of groups for the target distribution system based on each distributed power supply supplying power to the target distribution system.

In this case, the target distribution system refers to an actual distribution system that is subject to congestion analysis, and may be a distribution system connected to one or more distributed power sources.

According to an embodiment, the equivalent system generation unit 110 generates an equivalent system for the target distribution system based on each distributed power source so that the degree of congestion caused by each distributed power source in the target distribution system can be grasped for each distributed power source.

For example, when a substation, a first distributed power source, and a second distributed power source are connected to a target distribution system, the equivalent system generating unit 110 determines the first equivalent system and the second distributed power source for the target distribution system based on the substation. A second equivalent system for the target distribution system based on the distributed power source and a third equivalent system for the target distribution system based on the third distributed power source may be generated.

Meanwhile, in the following embodiments, one or more substations may include substations in consideration of the fact that substations may serve to supply power to a target distribution system.

The first calculation unit 120 calculates the contribution of each distributed power source for a specific group among a plurality of groups based on the current analysis result for the target distribution system.

Here, the contribution of each distributed power source to a specific group may mean a ratio of power supplied to a specific group by each distributed power source to total power supplied to the specific group by all distributed power sources.

According to an embodiment, the first calculation unit 120 determines the amount of power that a specific group among a plurality of groups included in the equivalent system receives from each distributed power source and the amount of power flowing through a connection line connected to the specific group. The contribution of each distributed power source to the group can be calculated.

At this time, the amount of power supplied to the specific group from each distributed power source and the amount of power flowing through the connection line connected to the specific group can be measured from the current analysis result for the target distribution system.

Specifically, the first calculation unit 120 may calculate the contribution of each distributed power source to a specific group according to Equation 1 below.

[Equation 1]

는 분산전원

의 특정 그룹

에 대한 기여도,

는 특정 그룹

가 분산전원

로부터 공급받는 전력의 크기,

는 특정 그룹

에서 다른 그룹

로 흐르는 연결선에 흐르는 전력의 크기를 의미한다. At this time,

is the distributed power

a specific group of

contribution to

is a specific group

Distributed power

The amount of power supplied from

is a specific group

different groups from

It means the magnitude of the power flowing in the connection line flowing to .

The second calculation unit 130 calculates the amount of power supplied by each distributed power source to a specific line in the target distribution system using the current analysis result and the contribution of the target distribution system.

According to an embodiment, the second calculator 130 may calculate the amount of power supplied to a specific line by each distributed power source based on the size and contribution of the total power supplied to the specific line.

Specifically, the second calculator 130 may calculate the amount of power supplied from each distributed power source to a specific line in the target distribution system according to Equation 2 below.

[Equation 2]

는 분산전원

가 대상 배전 계통 내 특정 선로

에 공급하는 전력의 크기,

는 대상 배전 계통 내 특정 선로

에 공급되는 전체 전력의 크기를 나타낸다.At this time,

is the distributed power

A specific line within the target distribution system

the amount of power supplied to

is a specific line within the target distribution system

represents the size of the total power supplied to

Meanwhile, the magnitude of total power supplied to a specific line in the target distribution system may be obtained through a current analysis result for the target distribution system.

The third calculation unit 140 calculates the value of each distributed power source for a specific line based on the amount of change in active power supplied to a specific line for each distributed power source according to the change in capacity of each distributed power source and the amount of change in total power supplied to the specific line. sensitivity can be calculated.

According to an embodiment, the third calculator 140 determines the amount of change in active power supplied to a specific line for each distributed power source according to the change in capacity of each distributed power source and the ratio of the amount of change in total power supplied to the specific line. The sensitivity of each distributed power source to the line can be calculated.

In other words, the third calculator 140 may calculate the sensitivity of each distributed power source for a specific line according to Equation 3 below.

[Equation 3]

는 분산전원

의 대상 배전 계통 내 특정 선로

에 대한 민감도,

는 각 분산전원의 용량 변화에 따른 대상 배전 계통 내 특정 선로

에 공급되는 전체 전력의 변화량,

는 각 분산전원의 용량 변화에 따른 분산전원

의 배전 계통 내 특정 선로

에 대한 유효 전력의 변화량을 나타낸다.At this time,

is the distributed power

A specific line within the target distribution system of

sensitivity to

is a specific line within the target distribution system according to the change in capacity of each distributed power source

The amount of change in the total power supplied to

is the distributed power according to the capacity change of each distributed power

of a specific line within the distribution grid

represents the amount of change in active power for

According to an embodiment, the third calculator 140 calculates the size of the total power supplied to a specific line after the capacity change of each distributed power source and the size of the total power supplied to the specific line before the capacity change of each distributed power source. With the difference, the amount of change in the total power supplied to a specific line can be calculated.

In other words, the third calculator 140 may calculate the amount of change in total power supplied to a specific line by all distributed power sources according to Equation 4 below.

[Equation 4]

는 대상 배전 계통 내 특정 선로

에 대한 전체 전력의 변화량,

는 각 분산전원의 용량 변화 이전의 대상 배전 계통 내 특정 선로

에 공급되는 전체 전력의 크기,

는 각 분산전원의 용량 변화 이후의 대상 배전 계통 내 특정 선로

에 공급되는 전체 전력의 크기를 나타낸다.At this time,

is a specific line within the target distribution system

The change in total power for ,

is a specific line within the target distribution system before the capacity change of each distributed power source

The amount of total power supplied to

is the specific line within the target distribution system after the capacity change of each distributed power source

represents the size of the total power supplied to

는 각 분산전원의 용량 변화 이전의 대상 배전 계통에 대한 조류 해석을 통해 획득될 수 있다. Meanwhile,

can be obtained through current analysis of the target distribution system before the capacity change of each distributed power source.

는 하기 수학식 5에 따라 계산될 수 있다. On the other hand,

Can be calculated according to Equation 5 below.

[Equation 5]

는 각 분산전원의 용량 변화 이후의 대상 배전 계통 내 특정 선로

에 공급되는 전체 전력의 크기,

는 각 분산전원의 용량 변화 이후 분산전원

의 특정 그룹

에 대한 기여도,

는 각 분산전원의 용량 변화 이후 분산전원

가 대상 배전 계통 내 특정 선로

에 공급한 전력의 크기를 나타낸다. At this time,

is the specific line within the target distribution system after the capacity change of each distributed power source

The amount of total power supplied to

is the distributed power after the capacity change of each distributed power

a specific group of

contribution to

is the distributed power after the capacity change of each distributed power

A specific line within the target distribution system

Indicates the amount of power supplied to

및

는 각 분산전원의 용량 변화 이후 상태에서 수학식 1 및 수학식 2를 이용함으로써 계산될 수 있다.Meanwhile,

and

Can be calculated by using Equations 1 and 2 in the state after the capacity change of each distributed power source.

The system usage calculation unit 150 calculates the network usage cost of each distributed power source using the sensitivity.

According to an embodiment, the grid usage calculation unit 150 may calculate the grid usage fee of each distributed power source using sensitivity obtained by normalizing the calculated sensitivity.

Specifically, the system utilization calculation unit 150 may calculate the maximum and minimum values of the sensitivity that increase or decrease according to the change in capacity of each distributed power source, and normalize the sensitivity using the calculated maximum and minimum values.

At this time, the system utilization calculation unit 150 may normalize the sensitivity according to Equation 6 below.

[Equation 6]

는 분산전원

의 대상 배전 계통 내 특정 선로

에 대한 정규화 된 민감도,

는 분산전원

의 대상 배전 계통 내 특정 선로

에 대한 민감도,

는 각 분산전원의 용량 크기가 변화에 따라 계산되는 민감도의 최솟값,

는 각 분산전원의 용량 크기가 변화에 따라 계산되는 민감도 중 최댓값을 나타낸다. At this time,

is the distributed power

A specific line within the target distribution system of

Normalized sensitivity to ,

is the distributed power

A specific line within the target distribution system of

sensitivity to

is the minimum value of the sensitivity calculated according to the change in the capacity of each distributed power source,

represents the maximum value of the sensitivity calculated according to the change in the capacity of each distributed power source.

Considering that the sensitivity can vary in size depending on the capacity of each distributed power source, the grid utilization calculation unit 150 uses the normalized sensitivity to clearly reflect the degree of congestion caused by each of the plurality of distributed power sources in order to pay the grid usage fee. can be calculated.

According to an embodiment, the system usage fee calculation unit 150 may calculate the system usage fee in proportion to the normalized sensitivity.

Specifically, the system usage fee calculation unit 150 may calculate the system usage fee according to Equation 7 below.

[Equation 7]

는 분산전원

의 대상 배전 계통 내 특정 선로

에 대한 계통 이용료,

는 대상 배전 계통 내 존재하는 선로의 개수,

는 대상 배전 계통과 연결된 분산전원의 개수,

는 대상 배전 계통에 대한 전체 계통 이용료를 나타낸다.At this time,

is the distributed power

A specific line within the target distribution system of

grid usage fee for

is the number of lines existing in the target distribution system,

is the number of distributed power sources connected to the target distribution system,

represents the total system usage fee for the target distribution system.

에 할당되는 계통 이용료는 하기 수학식 8에 따라 계산될 수 있다. According to one embodiment, distributed power

The system usage fee allocated to may be calculated according to Equation 8 below.

[Equation 8]

Through this, the system fee calculation unit 150 can calculate a relatively high system fee for distributed power sources having high sensitivity.

On the other hand, even if the amount of power generation is large, a relatively low grid usage fee can be calculated for a distributed power source with low sensitivity due to a small change in current flowing through the corresponding line (for example, when power is supplied to a linked load).

2 is an exemplary diagram for explaining a process of generating an equivalent system according to an embodiment.

Figure (a) of FIG. 2 is a picture showing a target distribution system.

Referring to (a) of FIG. 2, the equivalent system generator 110 classifies a plurality of buses (1 to 69) of the target distribution system into a plurality of groups (common) as shown in (a) of FIG. can

According to an embodiment, the equivalent system generation unit 110 may classify a plurality of buses into a plurality of groups based on whether the currents of each of the plurality of buses included in the target distribution system are the same.

For example, the system generator 110 may classify buses 1 to 8 as common 1 (first group) because the currents for equivalent buses 1 to 8 are the same as shown in (a) of FIG. 2 . .

In the same way, the equivalent system generation unit 110 may classify buses 28 to 31 as common 3 (second group) and buses 36 to 41 and 47 to 51 as common 5 (third group).

Meanwhile, the equivalent system generating unit 110 may classify only the bus 32 as the common 10 (fourth group) on the ground that there is no bus in which the same flow as the bus 32 flows.

In the same way, the equivalent system generator 110 assigns only bus 42 to common 11 (fifth group), only bus 52 to common 12 (sixth group), only bus 9 to common 14 (seventh group), and bus 43 can be classified as common 15 (eighth group) and only bus 53 as common 16 (ninth group).

Figure (b) of FIG. 2 is a picture showing an equivalent system for the target distribution system of figure (a) based on substations.

According to an embodiment, the equivalent system generation unit 110 may assign a rank to a plurality of groups based on the number of distributed power sources supplying power to each of the plurality of groups.

Specifically, the equivalent grid generation unit 110 may assign higher ranks as the number of distributed power sources supplying power to each of a plurality of groups increases.

For example, the equivalent system generation unit 110 may assign a rank as shown in Table 1 to each of a plurality of groups. At this time, it is assumed that the number of distributed power sources connected to each group is as shown in Table 1 below.

group (common) Connected Distributed Power rank One One One 3 One One 5 One One 10 2 2 11 2 2 12 2 2 14 3 3 15 3 3 16 3 3

According to an embodiment, the equivalent lineage generation unit 110 may generate an equivalent lineage by generating a connection line connected between a plurality of groups based on the given rank.

Specifically, the equivalent lineage generation unit 110 may generate an equivalent lineage by connecting a connection line from a group having a higher ranking to a group having a lower ranking.

For example, when the ranks given to a plurality of groups are as shown in Table 1 above, the equivalent system generation unit 110 obtains common 3 and 5 having the same rank as common 1 in common 1 as shown in (b) of FIG. A connection line can be created with common 14, which has a lower rank than common 1.

In the same way, the equivalent system generation unit 110 may generate connection lines from common 3 to common 10, from common 5 to common 11, 12, and from common 14 to common 16.

Through this, the equivalent system generation unit 110 assigns a rank to a plurality of groups as shown in (b) of FIG. 2, generates a connection line based on the configuration of the target distribution system, and generates an equivalent system based on the assigned rank. By determining the power direction of , an equivalent system corresponding to the target distribution system can be generated.

3 is a flowchart illustrating a method for managing congestion in a power distribution system according to an exemplary embodiment.

Illustratively, the method illustrated in FIG. 3 may be performed by the distribution system congestion management apparatus 100 illustrated in FIG. 1 .

Referring to FIG. 3, the distribution system congestion management apparatus 100 generates an equivalent system including a plurality of groups and one or more connection lines connected between the plurality of groups for the target distribution system based on each distributed power source connected to the target distribution system. Do (310).

Thereafter, the distribution system congestion management apparatus 100 calculates the contribution of each distributed power source for a specific group among a plurality of groups based on the flow analysis result for the equivalent system (320).

Thereafter, the distribution system congestion management apparatus 100 calculates the amount of power supplied by each distributed power source to a specific line in the target distribution system using the current analysis result and the contribution of the target distribution system (330).

Thereafter, the distribution system congestion management apparatus 100 determines the amount of change in active power supplied to a specific line for each distributed power source according to the change in capacity of each distributed power source and the amount of change in total power supplied to the line from all distributed power sources. Calculate the sensitivity of each distributed power source for (340).

Thereafter, the distribution system congestion management apparatus 100 calculates the network usage cost of each distributed power source using the sensitivity (350).

In the illustrated FIG. 3, the method is divided into a plurality of steps, but at least some of the steps are performed in reverse order, are performed together with other steps, are omitted, are divided into detailed steps, or are shown. One or more steps not yet performed may be added and performed.

4 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, computing device 12 may be one or more components included in grid congestion management device 100 .

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: distribution system congestion management device
110: equivalent system generation unit
120: first calculation unit
130: second calculator
140: third calculation unit
150: grid usage fee calculation unit

Claims (20)

an equivalent system generation unit that generates an equivalent system including a plurality of groups for the target distribution system and at least one connection line connected between the plurality of groups based on each distributed power source connected to the target distribution system;
a first calculation unit that calculates a contribution of each distributed power source to a specific group among the plurality of groups based on a current analysis result for the target distribution system;
a second calculation unit for calculating the amount of power supplied to a specific line in the target distribution system by each distributed power source using the current analysis result for the target distribution system and the contribution;
Calculating the sensitivity of each distributed power source to the line based on the amount of change in active power supplied to the line for each distributed power source according to the change in capacity of each distributed power source and the amount of change in total power supplied to the line 3 calculation unit; and
and a system usage fee calculator for calculating a network usage cost of each of the distributed power sources using the sensitivity.
The method of claim 1,
The equivalent system generation unit,
The distribution system congestion management device classifying the plurality of buses into the plurality of groups based on whether the current of each of the plurality of buses included in the target distribution system is the same.
The method of claim 1,
The equivalent system generation unit,
The plurality of groups are ranked based on the number of distributed power supplies that supply power to each of the plurality of groups, the connection line is generated based on the configuration of the target distribution system, and the equivalent system is generated based on the ranking. Distribution system congestion management device that determines the direction of electric power.
The method of claim 1,
The contribution is
Distribution system congestion management apparatus, which is calculated as a ratio of the amount of power supplied to the specific group by each distributed power source to the amount of total power supplied to the line.
The method of claim 1,
The first calculator,
The contribution is calculated using the amount of power that the specific group receives from each distributed power source and the amount of power flowing through a connection line connected to the specific group,
The power distribution system congestion management apparatus, wherein the amount of power supplied to the specific group and the amount of power flowing through a connection line connected to the specific group are obtained from a current analysis result for the target distribution system.
The method of claim 1,
The second calculator,
Calculate the amount of power supplied to the line by each distributed power source based on the total amount of power supplied to the line and the contribution,
The power distribution system congestion management device, wherein the magnitude of the total power supplied to the line is obtained from the flow analysis result for the target distribution system.
The method of claim 1,
The third calculator,
The power distribution system congestion management apparatus for calculating the amount of change in the total power as a difference between the amount of total power after the change and the amount of total power before the change.
The method of claim 7,
The third calculator,
The distribution system congestion management apparatus for calculating the sensitivity based on a ratio of the amount of change in the active power and the amount of change in total power supplied to the line.
The method of claim 1,
The system usage fee calculation unit,
Distribution grid congestion that calculates the maximum and minimum values of the sensitivity that increase or decrease according to the change in capacity of each distributed power source, normalizes the sensitivity using the maximum value and the minimum value, and calculates the grid usage fee using the normalized sensitivity. management device.
The method of claim 9,
The system usage fee calculation unit,
An apparatus for managing power distribution system congestion that calculates the grid usage fee in proportion to the normalized sensitivity.
generating an equivalent system including a plurality of groups for the target distribution system and at least one connection line connected between the plurality of groups based on each distributed power source connected to the target distribution system;
calculating a contribution of each distributed power source to a specific group among the plurality of groups based on a current analysis result for the target distribution system;
Calculating the amount of power supplied to a specific line in the target distribution system by each distributed power source using a current analysis result for the target distribution system and the contribution;
Calculating the sensitivity of each distributed power source to the line based on the amount of change in active power supplied to the line for each distributed power source according to the change in capacity of each distributed power source and the amount of change in total power supplied to the line ; and
and calculating a network usage cost of each distributed power source using the sensitivity.
The method of claim 11,
The generating step is
and classifying the plurality of buses into the plurality of groups based on whether the current of each of the plurality of buses included in the target distribution system is the same.
The method of claim 11,
The generating step is
The plurality of groups are ranked based on the number of distributed power supplies that supply power to each of the plurality of groups, the connection line is generated based on the configuration of the target distribution system, and the equivalent system is generated based on the ranking. Distribution grid congestion management method that determines the direction of power.
The method of claim 11,
The contribution is
Distribution system congestion management method, which is calculated as a ratio of the amount of power supplied to the specific group by each distributed power source to the amount of total power supplied to the line.
The method of claim 11,
The step of calculating the contribution is,
The contribution is calculated using the amount of power that the specific group receives from each distributed power source and the amount of power flowing through a connection line connected to the specific group,
The distribution system congestion management method, wherein the size of the power supplied to the specific group and the size of the power flowing through a connection line connected to the specific group are obtained from a current analysis result for the target distribution system.
The method of claim 11,
The step of calculating the magnitude of the power is,
Calculate the amount of power supplied to the line by each distributed power source based on the total amount of power supplied to the line and the contribution,
The power distribution system congestion management method, wherein the magnitude of the total power supplied to the line is obtained from a current analysis result for the target distribution system.
The method of claim 11,
To calculate the sensitivity,
The distribution system congestion management method of calculating the amount of change in the total power as a difference between the amount of total power after the change and the amount of total power before the change.
The method of claim 17
To calculate the sensitivity,
The distribution system congestion management method of calculating the sensitivity based on a ratio of the amount of change in the active power and the amount of change in total power supplied to the line.
The method of claim 11,
The calculating step is
Calculating a maximum value and a minimum value of sensitivity that increases or decreases according to a change in capacity of each distributed power source;
Normalizing sensitivity using the maximum value and the minimum value; and
and calculating the grid usage fee using the normalized sensitivity.
The method of claim 19
The calculating step is
A method for managing distribution system congestion, wherein the grid usage fee is calculated in proportion to the normalized sensitivity.

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