KR102674442B1 - Apparatus and method for simulation for linking distribution lines - Google Patents

Abstract

The present invention is a simulation device for linking distribution lines, comprising: a communication unit that receives information to support distribution system operation from an external server; and a processor that determines whether linked operation is possible with the linked distribution line for grid linking of the linked transformer based on the information received through the communication unit.

Description

Simulation device and method for linking distribution lines {APPARATUS AND METHOD FOR SIMULATION FOR LINKING DISTRIBUTION LINES}

Various embodiments relate to simulation devices and methods for connecting distribution lines.

Due to recent industrial development, the size of the power system has become larger, and distribution lines have become widely connected. However, due to such enlargement and complexity, operation of the power system is becoming increasingly difficult. For example, conventionally, systems such as SCADA (supervisory control and data acquisition) or EMS (energy management system) are installed in the power system to help grid operators operate the power system, but the grid operator's duties are still becoming more complex and safe. In order to operate the power system, higher capabilities for system operators in connection with distribution lines are continuously required.

For example, in the past, in order to prevent failures due to the connection of distribution lines in the power system, the connection of distribution lines was possible using a program for system analysis prior to connection of distribution lines, for example, PSS/E (power system simulator for engineer). was reviewed.

However, this program for system analysis (PSS/E) still had the disadvantages of limiting the number of concurrently connected users, requiring system-related expertise to use the program, and having low practical field usability.

Therefore, there is a need for a simulation tool that minimizes losses in power system operation, automatically searches and determines the optimal path for safer distribution line connection, and determines whether distribution line connection operation is possible based on this. This is a situation that is gradually increasing in our industry.

Therefore, the present invention was created to solve the above-mentioned problems. The purpose of the present invention is to automatically search and determine the optimal path for connecting distribution lines of different transformers, and based on this, determine whether or not distribution line connected operation is possible. To provide a simulation device and method for connecting distribution lines.

The technical problem to be achieved in this document is not limited to the technical problem mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

According to various embodiments of the present invention, there is provided a simulation method for linking distribution lines, comprising: correcting the amount of power of a distribution line to be linked according to a difference in the load of a transformer to be linked; An operation of calculating impedance between the linked distribution lines; An operation of determining the optimal path and optimal impedance for grid connection based on the calculated impedance; An operation of calculating a current due to a phase difference angle based on the determined optimal impedance; and an operation of determining whether linked operation of the linked distribution line is possible based on the power flow results.

In addition, the operation of correcting the amount of power of the connection target distribution line includes: receiving the capacity of the connection target transformer; An operation of calculating the amount of power of a distribution line that is not connected to the grid from the connected transformer; and an operation of correcting the power amount of the connected distribution line using the calculated difference between the power amount of the distribution line that is not connected to the grid and the capacity of the connected transformer.

Additionally, the operation of determining the optimal path includes determining the optimal path for grid connection using a shortest path algorithm.

In addition, the operation of calculating the impedance between the linked distribution lines includes the operation of receiving information for supporting distribution system operation from an external server; and calculating the impedance between the linked distribution lines based on the received information.

Additionally, the information for supporting distribution system operation includes at least one of facility information, location information, geographic information, connection information, and line information.

In addition, the operation of determining whether linked operation of the linked distribution line is possible includes comparing the power flow result with a threshold value to determine whether linked operation of the linked distribution line is possible.

Additionally, a computer-readable storage medium according to another embodiment of the present invention for solving the above technical problem may, when executed on a computer, record a program for performing the method for determining the optimal path for linking the distribution line. You can.

Additionally, a simulation device for connecting a distribution line according to another embodiment of the present invention to solve the above technical problem, comprising: a communication unit that receives information for supporting distribution system operation from an external server; and a processor that determines whether linked operation is possible with the linked distribution line for grid linking of the linked transformer based on the information received through the communication unit.

In addition, the processor is characterized in that it corrects the amount of power of the linked distribution line according to the difference in load of the linked transformer.

In addition, the processor calculates the impedance between the distribution lines to be connected and determines the optimal path based on the calculated impedance.

Additionally, the processor is characterized in that it calculates the optimal impedance based on the determined optimal path.

In addition, the processor calculates the power flow according to the phase difference angle based on the optimal impedance, and determines whether linked operation of the linked distribution line is possible based on the calculated power flow.

In addition, the communication unit receives the capacity of the linkage target transformer, and the processor uses the difference between the capacity of the linkage target transformer and the power amount of the distribution line that is not connected to the grid in the linkage target transformer to connect the linkage target distribution line. It is characterized by correcting the amount of power.

Additionally, the processor is characterized in that it determines the optimal path using a shortest path algorithm.

Additionally, the information for supporting distribution system operation includes at least one of facility information, location information, geographic information, connection information, and line information.

In addition, it further includes a memory that stores information related to the linked transformer, information related to the linked distribution line, and information for supporting the operation of the distribution system.

In addition, it further includes a display that visualizes and outputs whether or not linked operation of the linked distribution line is possible.

The present invention automatically searches and determines the optimal path for connecting distribution lines of different transformers, and determines whether distribution line connected operation is possible based on this, thereby relieving the burden on the system operator for power system connected operation. there is.

Additionally, the present invention has the effect of enabling the distribution system to be operated more flexibly in response to various power demands.

In addition, the present invention can improve the reliability of system operation by increasing the accuracy of whether distribution line operation is possible.

The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description below. will be.

Figure 1 shows an example of equipment failure due to connection with a conventional distribution line.
Figure 2 shows a functional block diagram of a simulation device 200 for connecting a distribution line according to an embodiment of the present invention.
Figure 3 shows a flowchart (S300) for explaining a simulation method for connecting distribution lines according to an embodiment of the present invention.
FIG. 4 is a diagram illustrating an example in which a distribution line 10 to be linked is connected to a transformer to be linked according to an embodiment of the present invention.
Figure 5 shows a flowchart (S310) for explaining a method of correcting the amount of power due to the difference in the load of the connected transformer according to an embodiment of the present invention.
Figure 6 shows an example of impedance between specific loads calculated to determine the optimal path through a shortest path algorithm in a distribution line to be connected according to an embodiment of the present invention.

Hereinafter, various embodiments are described in detail with reference to the attached drawings.

Regardless of the reference numerals, identical or similar components are assigned the same reference numbers and duplicate descriptions thereof may be omitted.

The suffixes 'module' or 'part' for the components used in the following description are given or used interchangeably only considering the ease of writing the specification, and do not have a distinct meaning or role in themselves. Additionally, 'module' or 'unit' refers to software or hardware components such as FPGA (field programmable gate array) or ASIC (application specific integrated circuit), but is not limited to software or hardware. A 'part' or 'module' may be configured to reside on an addressable storage medium and may be configured to run on one or more processors. Therefore, as an example, 'part' or 'module' refers to components such as software components, object-oriented software components, class components and task components, processes, functions, properties, May include procedures, subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables. The functionality provided within one component, 'part' or 'module' may be combined into a smaller number of components and 'parts' or 'modules' or may be combined into additional components and 'parts' or 'modules'. can be further separated into

The steps of the method or algorithm described in connection with some embodiments of the invention may be implemented directly as hardware, software modules, or a combination of the two executed by a processor. Software modules may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of recording medium known in the art. An exemplary recording medium is coupled to a processor, which can read information from the recording medium and write information to the storage medium. Alternatively, the recording medium may be integrated with the processor. The processor and recording medium may reside within an application specific integrated circuit (ASIC). The ASIC may reside within the user terminal.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is said to be 'connected' or 'connected' to another component, it is understood that it may be directly connected or connected to the other component, but that other components may exist in between. It should be. On the other hand, when a component is mentioned as being ‘directly connected’ or ‘directly connected’ to another component, it should be understood that there are no other components in between.

Figure 1 shows an example of equipment failure due to connection with a conventional distribution line.

Generally, for distribution line repair work, the distribution lines of each substation must be electrically connected. For example, when connecting distribution lines that receive power from different S substations and R substations, the power value flowing in the connected distribution lines may be different from the power value flowing in each distribution line before connection. there is.

For example, as shown in Figure 1, 6.4 MW and 6.5 MW of power were flowing in each distribution line that receives power from the S substation and R substation, respectively, before connecting the distribution lines, but after connecting the distribution lines, each distribution line As 17.8MW of power flows, which is higher than the sum of 12.9MW of power flowing in the furnace, the relay at the S substation automatically operates. In other words, as the relay is driven, a fault occurs in which the linked distribution lines connected to the transformers of each of the S and R substations are automatically blocked.

In order to prevent such failure accidents in advance, conventionally, before connecting distribution lines, the possibility of connecting distribution lines was examined using a system analysis program, for example, PSS/E (power system simulator for engineer). However, the conventional system analysis program (PSS/E) has the disadvantage of low practical field usability because the number of concurrently connected users is limited and system-related expert knowledge is required to use the system analysis program.

In order to solve this problem, in the following specification, the power amount due to the load difference of different link target transformers is corrected, the optimal path for linking the link target distribution lines of each transformer is automatically searched and determined, and the connection is made based on this. The simulation device 200 and method for linking distribution lines, which can determine more accurately whether linked operation of a distribution line is possible by calculating the optimal impedance according to linked operation of the target distribution line, will be described in detail.

For reference, the simulation device 200 for linking distribution lines in the present specification below is a device that determines whether linked operation of the distribution line to be linked to the linked transformer is possible, and is used for mobile phones, smart phones, and laptop computers ( laptop computer, digital broadcasting terminal, PDA (personal digital assistants), PMP (portable multimedia player), navigation, slate PC, tablet PC, ultrabook, wearable device, For example, it will be obvious that it can be applied to information and communication devices, multimedia devices, and their application devices, including smart watches, smart glasses, and head mounted displays (HMDs). .

In addition, the simulation device 200 for linking distribution lines of the present invention may include an application or widget that can display whether linked operation of the distribution line to be linked is possible. Here, a widget refers to a mini-application that allows you to use content or functions directly without going through an application. For example, applications such as weather, calendar, calculator, news, etc. may correspond to widgets.

Figure 2 shows a functional block diagram of the simulation device 200 for linking distribution lines according to an embodiment of the present invention, and Figure 3 illustrates a simulation method for linking distribution lines according to an embodiment of the present invention. A flow chart (S300) for this is shown.

The simulation device 200 for distribution line connection may be configured to execute each operation constituting the simulation method for distribution line connection according to an embodiment of the present invention, for example, as shown in FIG. 3. As can be seen, it can be configured to execute each operation of the simulation method (S300) for connecting distribution lines.

Meanwhile, in FIG. 3, each operation may be performed sequentially, but is not necessarily performed sequentially. For example, the order of each operation may be changed, and at least two operations may be performed in parallel.

2 and 3, the simulation device 200 for distribution line connection according to an embodiment of the present invention includes a communication unit 210, a processor 220, a memory 230, and a display 240. can do.

The communication unit 210 may receive information to support distribution system operation from an external server (or other electronic device). For example, the communication unit 210 is provided for direct connection with an external server (or other electronic device) or connection through a network, and may be implemented as a wired and/or wireless communication unit 210.

Information to support distribution system operation may include facility information, location information, geographic information, connection information, and line information. Equipment information may refer to equipment information regarding equipment constituting the distribution system, relays, distribution substations, and customers receiving power from the distribution substation. The location information may include location information about the location of the distribution substation, the location of the customer, the location of the utility pole, etc. Geographic information may include topographic information received from a geographic information system, including a GIS (geographic information system), geographic information related to underground facilities, etc. Connection information may refer to connection information connected to a plurality of utility poles through wires. Line information includes branch lines that transmit power to customers (or loads) that receive power from the distribution substation, wiring main lines to which branch lines or pole-mounted transformers are connected, and lines to which customers (or loads) are not connected from the distribution substation to the main wiring lines. It may include line information about feeders, etc. However, this information to support distribution system operation is illustrative and not limited to this, and may include various information to determine whether distribution line connection is possible.

The processor 220 can correct the amount of power of the distribution line to be connected according to the difference in load of each transformer to be connected (S310). For example, a transformer bank of a distribution substation may have approximately 5 to 6 distribution lines. At this time, the distribution lines may be connected to each other as distribution lines of transformers in different distribution substations. In other words, each of the plurality of distribution lines of the transformer bank may be connected to a customer (or load), or may be connected to a transformer distribution line of another distribution substation, and the processor 220 takes this into consideration and connects each transformer to be linked. The power amount of the target distribution line can be corrected. This will be described in more detail below.

In one embodiment, the processor 220 may calculate the impedance between distribution lines to be linked based on information for supporting distribution system operation received through the communication unit 210 (S320). For example, the processor 220 may calculate impedance based on the relative distance between a plurality of consumers (or loads) that receive power from a node connected to each distribution line to be linked. At this time, the relative distance may mean the actual separation distance between a plurality of consumers (or loads), and may also mean a numerical value calculated by weighting the power rate, amount of electricity, etc.

Based on the impedance calculated through the S320 operation, the processor 220 can determine the optimal path for grid connection and calculate the optimal impedance based on this (S330). For example, the processor 220 may automatically search for and determine a path for the shortest distance between a plurality of customers (or loads) using a shortest path algorithm, for example, the Dijkstra algorithm. That is, the processor 220 can determine the optimal path between consumers (or loads) connected through nodes between transformers to be linked, and calculate the optimal impedance between distribution lines to be linked based on this.

Based on the optimal impedance calculated through operation S330 and the information received through the communication unit 210, the processor 220 can calculate the power flow of the distribution line to be linked (S350). At this time, the information received through the communication unit 210 may include the transformer voltage of each different substation, each phase angle and impedance of the transformer, etc., and the power flow calculation may be defined by Equation 1 in one embodiment. You can.

Referring to Equation 1, the power flow is determined by the optimal impedance ( ) can be determined by. That is, in the past, the power flow was calculated without considering the impedance of the distribution line to be linked, resulting in a higher power flow than the actual result. However, according to an embodiment of the present invention, the simulation device 200 for linking distribution lines In this case, the power flow is calculated by considering the impedance of the distribution line to be linked, so more accurate simulation results can be derived.

Based on the power flow result calculated through operation S340, the processor 220 can determine whether linked operation of the distribution line to be linked is possible (S350). For example, the processor 220 may compare the power flow result with a threshold preset by the system operator and determine that linked operation of the distribution line to be linked is possible if the power flow result is less than the set threshold. Conversely, the processor 220 may determine that linked operation of the distribution line to be linked is impossible if the power flow result is greater than a set threshold.

In one embodiment, the processor 220 may operate at least two of the components included in the simulation device 200 for distribution line connection in combination with each other in order to determine whether connected operation of the distribution line to be connected is possible. there is. For reference, the processor 220 is implemented as a controller, processor, micro-processor, micro-controller, etc., and is implemented as a distribution line according to an embodiment of the present invention. The operation, functions, etc. of the simulation device 200 for connection can be comprehensively controlled.

The memory 230 enables linked operation of the linked distribution lines, such as the corrected power amount of the linked distribution lines generated through the simulation device 200 for linking distribution lines, the optimal path and optimal impedance between the linked distribution lines, etc. Various data may be stored to determine whether or not For reference, the memory 230, as known to those skilled in the art, includes hard disk drive (HDD), read only memory (ROM), random access memory (RAM), electrically erasable and programmable read only memory (EEPROM), and flash memory. Various types of storage devices capable of inputting and outputting information, such as (flash memory), CF (compact flash) card, SD (secure digital) card, SM (smart media) card, MMC (multimedia) card, or memory stick. It can be implemented as:

In addition, according to a further embodiment of the present invention, additional memory for data backup may be further provided in the memory 230 or separately from the memory 230, and the processor 220 may be configured to use the memory 230. By backing up various data to determine whether linked operation of the target distribution line stored in is possible and storing it in the additional memory, active response to data loss or loss is possible.

The display 240 can visualize and output whether or not the linked distribution line is capable of linked operation, as determined by the processor 220. For example, the display 240 visualizes and displays the optimal path derived through the shortest path algorithm based on a map, or quantifies and outputs the optimal impedance to determine whether linked operation of the target distribution line is possible. This can lead to easier analysis by system operators.

For reference, the elements 210, 220, 230, and 240 of the simulation device 200 for distribution line connection shown in FIG. 2 are exemplary elements for explaining the operation and function of the simulation device 200 for distribution line connection. It will be clear that the elements are not limited to this, and that additional elements (for example, a user input unit for inputting a threshold value, a power amount correction unit for a linked distribution line, etc.) may be further implemented. In the following, an example diagram of the connection status of the target distribution line of the target transformer and a method of correcting the power amount due to the difference in load of the target transformer will be explained.

Figure 4 shows an example where a distribution line to be linked is connected to a transformer to be linked according to an embodiment of the present invention, and Figure 5 shows a method of correcting the amount of power due to a difference in load of the transformer to be linked according to an embodiment of the present invention. A flowchart (S310) for explanation is shown. At least some of the operations in FIG. 5 may be detailed operations of operation S310 in FIG. 3 .

In the following embodiments, each operation may be performed sequentially, but is not necessarily performed sequentially. For example, the order of each operation may be changed, and at least two operations may be performed in parallel.

In FIG. 5, the transformer to be linked is a transformer installed in each of the S substation and R substation of FIG. 4, and the distribution line 10 to be linked is formed in each bank of the transformer of the S substation and the transformer of the R substation to establish system connection. It may be a linked distribution line 10 that is interconnected for this purpose. Hereinafter, at least some operations of FIG. 5 will be described with reference to FIG. 4 .

Referring to FIG. 5, the capacity of transformers targeted for connection at different substations for grid connection can be received through the communication unit 210 of the simulation device 200 for distribution line connection (S311). For example, the capacity of a transformer used in a distribution line can be tens of kVA.

In one embodiment, the processor 220 of the simulation device 200 for distribution line connection connects the connection target based on information for distribution system operation support received from an external server (or other electronic device) through the communication unit 210. The power amount of the distribution line not connected to the transformer can be calculated (S312).

For example, as shown in Figure 4, the transformer bank to be linked to the S substation has five distribution lines, and the transformer bank to be linked to the R substation has four distribution lines, At this time, among the distribution lines of each of the connection target transformers of the S substation and the R substation, the remaining distribution lines excluding the connection target distribution line 10 can be set as unconnected distribution lines of the connection target transformer. That is, the processor 220 of the simulation device 200 for linking distribution lines sets the remaining distribution lines, excluding the distribution target distribution line 10, as distribution lines not connected to the connection target transformer, and sets the remaining distribution lines as distribution lines not connected to the connection target transformer, and these unconnected distribution lines The amount of power can be calculated.

In one embodiment, the processor 220 of the simulation device 200 for connecting a distribution line uses the capacity of the target transformer received through operation S311 and the power amount of the unconnected distribution line calculated through operation S312 to connect the distribution line to the connection target. The amount of power of the furnace 10 can be calculated (S313). For example, the processor 220 may correct the power amount of the connection target distribution line 10 by calculating the capacity of the connection target transformer and the load difference between the remaining distribution lines excluding the connection target distribution line 10.

In one embodiment, the processor 220 of the simulation device 200 for linking distribution lines uses the power amount of the distribution line 10 to be linked, corrected through operation S313, to connect the distribution line according to the load difference of the transformer to be linked. The power flow of the furnace 10 can be calculated (S314). For example, the processor 220 may calculate the power flow of the distribution line 10 to be linked based on the information received through the communication unit 210, and the calculation of the power flow of the distribution line 10 to be linked is performed in one step. For example, it can be defined by Equation 2.

At this time, the amount of power may be the corrected amount of power of the target distribution line 10. Therefore, unlike the conventional grid connection simulation that calculates the power flow in the connection target distribution line 10 without considering the load of the connection target transformer, the simulation device 200 for distribution line connection according to an embodiment of the present invention ) corrects the power amount by considering the load connected to each of the distribution lines other than the target distribution line 10 of the connection target transformer, and uses this to calculate the power amount of the connection target distribution line 10, thereby providing more accurate grid connection. Simulation can be performed.

Figure 6 shows an example of impedance between specific loads calculated to determine the optimal path through a shortest path algorithm in a distribution line to be connected according to an embodiment of the present invention.

Referring to FIG. 6, the processor 220 of the simulation device 200 for linking distribution lines can calculate the impedance between distribution lines to be linked based on information for distribution system operation received through the communication unit 210. . For example, the processor 220 may use information received through the communication unit 210 to calculate the impedance between customers (or loads) connected through a plurality of nodes between different substations. For example, as shown in FIG. 6, the processor 220 displays the impedance between customers (or loads) formed between the distribution line to be connected to the S substation and the distribution line to be connected to the R substation by quantifying the relative distance. You can. At this time, the relative distance may mean the actual separation distance between a plurality of customers (or loads), or it may mean a numerical value calculated by weighting the power rate, amount of electricity, etc.

Therefore, the processor 220 of the simulation device 200 for distribution line connection determines the optimal path based on the shortest distance between the S substation and the R substation using the shortest path algorithm, and determines the optimal path based on the determined shortest path. The impedance can be calculated. At this time, the optimal impedance may be the sum of impedances between customers (or loads) based on the optimal path.

As described above, the present invention automatically searches for and determines the optimal path for connecting distribution lines of different transformers, and determines whether distribution line connected operation is possible based on this, thereby providing the power system connected operation of the system operator. It can alleviate the burden.

Additionally, the present invention has the effect of enabling the distribution system to be operated more flexibly in response to various power demands.

In addition, the present invention can improve the reliability of system operation by increasing the accuracy of whether distribution line operation is possible.

Meanwhile, various embodiments described in this specification may be implemented by hardware, middleware, microcode, software, and/or a combination thereof. For example, various embodiments may include one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), and field programmable gate arrays (FPGAs). ), processors, controllers, microcontrollers, microprocessors, other electronic units designed to perform the functions presented herein, or a combination thereof.

Additionally, for example, various embodiments may be encoded or embodied in a computer-readable medium containing instructions. Instructions contained or encoded in a computer-readable medium may cause a programmable processor or other processor to perform a method, for example, when the instructions are executed. Storage media may be any available media that can be accessed by a computer. For example, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage media, magnetic disk storage media or other magnetic storage devices, or any desired program code containing instructions or instructions accessible by a computer. It may include any other medium that can be used to store data in the form of data structures.

Such hardware, software, firmware, etc. may be implemented within the same device or within individual devices to support the various operations and functions described herein. Additionally, components, units, modules, components, etc. described as “~” in the present invention may be implemented together or individually as separate but interoperable logic devices. The description of different features for modules, units, etc. is intended to highlight different functional embodiments and does not necessarily imply that they must be realized by separate hardware or software components. Rather, functionality associated with one or more modules or units may be performed by separate hardware or software components or may be integrated within common or separate hardware or software components.

Although operations are shown in the drawings in a particular order, it should not be understood that these operations are performed in the particular order shown, or in sequential order, or that all depicted operations need to be performed to achieve the desired results. . In some environments, multitasking and parallel processing can be advantageous. Moreover, the distinction of various components in the above-described embodiments should not be construed as requiring such a distinction in all embodiments, and the described components may generally be integrated together into a single software product or packaged into multiple software products. It must be understood that it can be done.

As described above, the optimal embodiments are disclosed in the drawings and specifications. Although specific terms are used here, they are used only for the purpose of explaining the present invention and are not used to limit the meaning or scope of the present invention described in the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the attached patent claims.

200: simulation device 210: communication department
220: Processor 230: Memory
240: Display 10: Connection target distribution line

Claims (17)

As a simulation method for connecting distribution lines,
An operation to correct the power amount of the linked distribution line according to the difference in load of the linked transformer;
An operation of calculating impedance between the linked distribution lines;
An operation of determining the optimal path and optimal impedance for grid connection based on the calculated impedance;
An operation of calculating power flow by phase difference angle based on the determined optimal impedance; and
A simulation method for linking distribution lines, including an operation of determining whether linked operation of the linked distribution line is possible based on the power flow calculation result.
According to claim 1,
The operation of correcting the power amount of the linked distribution line is,
An operation of receiving the capacity of the linked transformer;
An operation of calculating the amount of power of a distribution line that is not connected to the grid from the connected transformer; and
A simulation method for connecting distribution lines, including an operation of correcting the amount of power of the distribution line to be connected using the calculated difference between the amount of power of the distribution line that is not connected to the grid and the capacity of the transformer to be connected.
According to claim 1,
The operation of determining the optimal path is,
A simulation method for distribution line connection, including the operation of determining an optimal path for the grid connection using a shortest path algorithm.
According to claim 1,
The operation of calculating the impedance between the linked distribution lines is,
An operation of receiving information to support distribution system operation from an external server; and
A simulation method for connecting distribution lines, including calculating impedance between the distribution lines to be connected based on the received information.
According to claim 4,
The information for supporting distribution system operation includes at least one of facility information, location information, geographic information, connection information, and line information. A simulation method for connecting distribution lines.
According to claim 1,
The operation of determining whether linked operation of the linked distribution line is possible,
A simulation method for linking distribution lines, comprising an operation of comparing the power flow calculation result with a threshold value and determining whether linked operation of the linked distribution line is possible.
In a computer-readable storage medium,
A computer-readable storage medium comprising a computer program that, when executed on a computer, performs the simulation method for interconnecting a distribution line according to any one of claims 1 to 6.
As a simulation device for connecting distribution lines,
A communication department that receives information to support distribution system operation from an external server; and
It includes a processor that determines whether linked operation is possible with the linked distribution line for system linking of the linked transformer based on the information received through the communication unit,
The processor,
Simulation for distribution line connection that corrects the power amount of the connection target distribution line according to the load difference of the connection target transformer, calculates the impedance between the connection target distribution lines, and determines the optimal path based on the calculated impedance. Device.
delete delete According to claim 8,
The processor is a simulation device for connecting a distribution line, wherein the processor calculates the optimal impedance based on the determined optimal path.
According to claim 11,
The processor is a simulation device for linking distribution lines, wherein the processor calculates power flow by phase difference angle based on the optimal impedance, and determines whether linked operation of the target distribution line is possible based on the calculated power flow.
According to claim 8,
The communication unit receives the capacity of the linked transformer,
The processor is a simulation device for linking a distribution line, wherein the processor corrects the amount of power of the target distribution line by using the difference between the capacity of the target transformer and the amount of power of a distribution line that is not connected to the grid in the target transformer.
According to claim 8,
The processor is a simulation device for distribution line connection that determines the optimal path using a shortest path algorithm.
According to claim 8,
The information for supporting distribution system operation includes at least one of facility information, location information, geographic information, connection information, and line information. A simulation device for connecting a distribution line.
According to claim 8,
A simulation device for linking distribution lines, further comprising a memory that stores information related to the linked transformer, information related to the linked distribution line, and information for supporting the distribution system operation.
According to claim 8,
A simulation device for linking distribution lines, further comprising a display that visualizes and outputs whether linked operation of the linked distribution line is possible.

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