KR20230134173A - Method, server and computer program for generating a single-line diagram that provides convenience in calculating power demand and calculating protection coordination standards in a power system including distributed power - Google Patents

Abstract

A method for generating a single-line diagram that provides convenience for calculating power demand and protection cooperation standards in a power system including distributed power sources according to various embodiments of the present invention for realizing the above-described tasks is disclosed. The method includes generating a vertically structured systematic tree based on section information of a systematic diagram, generating relative coordinate information based on the systematic tree, and generating absolute coordinate information based on the relative coordinate information. and generating a single-line diagram based on the absolute coordinate information.

Description

A method of generating a single-line diagram that provides convenience in calculating power demand and protection cooperation standards in a power system including distributed power, server and computer program {METHOD, SERVER AND COMPUTER PROGRAM FOR GENERATING A SINGLE-LINE DIAGRAM THAT PROVIDES CONVENIENCE IN CALCULATING POWER DEMAND AND CALCULATING PROTECTION COORDINATION STANDARDS IN A POWER SYSTEM INCLUDING DISTRIBUTED POWER}

Various embodiments of the present invention relate to a method, server, and computer program for generating a single-line diagram that provides convenience for calculating power demand and protection cooperation standards in a power system including distributed power sources.

Today, the demand for electricity continues to increase due to economic growth and changes in lifestyles, and as social interest in global warming increases, demand for the use of new and renewable energy, a new energy source, is also increasing. In this environment, distributed power sources (or distributed power sources) are being connected to the distribution system in accordance with the government's policy to expand and distribute new and renewable energy.

As the utilization of distributed power sources increases, it is becoming possible to distribute and deploy them near areas where power is consumed, unlike large-scale centralized power sources such as thermal and nuclear power plants. Distributed power sources may include, for example, new energies such as fuel cells, liquefied natural gas gasification, and hydrogen energy, and renewable energies such as geothermal, bio, wave, hydro, wind, waste, solar, and solar energy.

Since power supply through distributed power sources is subject to many environmental factors and is difficult to supply consistently, it can mainly be linked to the power system, such as an energy storage system. Through this, the peak load of distribution facilities can be reduced during times of high power demand, and power can be supplied stably and efficiently. In addition, since it is small in size and placed near power consumption sites, it has the advantage of resolving imbalances in power plant locations.

However, the current distribution system infrastructure and operation method may have many limitations in accommodating multiple distributed power sources. Since the distribution system is a system designed and operated for the purpose of supplying power to loads, reverse currents that may occur when a power generation source is connected to the distribution system can cause various technical problems that were not considered in the existing distribution system. there is. In addition, when connected to a distributed power source, the impedance of the power source becomes small and, in the event of an accident, it may become difficult to detect the cause of the failure on the power source side or the distribution protection equipment side.

More specifically, the current distribution system is designed so that the line configuration and protection coordination system operate based on a unidirectional power flow, so when multiple distributed power sources that generate reverse currents are connected to the system, system reliability, electricity quality, etc. may cause problems. Additionally, when distributed power sources are connected, as supply/demand power calculations become more complex, it is difficult to determine actual power demand, and power factor calculations may also become more complicated.

In particular, in the distribution system, when a specific line breaks down, protection cooperation in the surrounding area can be important so that the nearest protection device is cut off and only the part connected to the protection device is blacked out. If protection cooperation is not properly implemented, problems may occur, such as judging a fault when it is in a normal state and blocking the line, or not blocking the line in a blocking situation. This problem can result in blocking not only the part connected to the protection device, but also the area itself, which can cause a lot of damage to power consumers.

In order for the protection device to operate during the protection coordination process, the reference point for blocking must be set through the maximum current and fault current at the installed point. In general, in the case of a one-way system, if you only know the length of the wire from the fault point to the breaker, you can calculate the impedance to determine the fault current. However, in the case of a distributed power supply, the formula is complex because it is calculated comprehensively by establishing a formula for each connected power source. And calculations can be difficult. For example, if about 50 to 60 distributed power sources with different patterns are connected, the calculation itself to determine the fault current may be very difficult.

Additionally, in the current distribution system, geographic information system (GIS) and power system information are not interconnected, making it difficult to integrate them to create a power network. For example, if geographic information and power system information do not match, there is a risk that incorrect information may be provided to managers who perform monitoring and management as the on-site information on distribution facilities and information on power demand forecasts do not match.

Therefore, in the industry, there may be a need for research and development on a data structure that facilitates simulation for load calculation and diagnosis even when distributed power sources are connected to the grid, and that integrates geographic information and power system information.

Republic of Korea registered patent 10-2254008

The problem to be solved by the present invention is to provide a one-line diagram that improves the convenience of calculating power demand and protection cooperation standards in a power system including distributed power sources.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned can be clearly understood by those skilled in the art from the description below.

In order to solve the above-described problems, a method for generating a single-line diagram that provides convenience for calculating power demand and protection cooperation standards in a power system including distributed power sources according to an embodiment of the present invention is disclosed. The method includes generating a vertically structured systematic tree based on section information of a systematic diagram, generating relative coordinate information based on the systematic tree, and generating absolute coordinate information based on the relative coordinate information. and generating a single-line diagram based on the absolute coordinate information.

In an alternative embodiment, the section information of the systematic diagram includes information related to the connection between one or more nodes, and the step of generating the systematic tree includes setting a node related to a reference point as the highest node, and using the highest node as a reference. Generating the lineage tree by connecting one or more nodes according to a hierarchical level, wherein one or more nodes included in the lineage tree include a parent node related to a parent node and a child node related to a child node of the parent node. may include.

In an alternative embodiment, the step of generating the lineage tree includes identifying whether a branch exists between connected nodes based on the section information, and if the branch exists, the branch is at the same level as the child node. It may include creating one or more sibling nodes in response to the branch.

In an alternative embodiment, the step of generating the relative coordinate information includes setting the highest node of the system tree as the origin, and generating a horizontal reference line by sequentially positioning child nodes connected to the highest node in the first horizontal direction. and, when a branch exists in each of the top node and the child nodes forming the horizontal baseline, sequentially connecting sibling nodes corresponding to the branch to the horizontal baseline.

In an alternative embodiment, the step of sequentially connecting the sibling nodes to the horizontal reference line includes, when a branch exists in lower nodes corresponding to each of the sibling nodes, each of the sibling nodes corresponding to the branch. It may include connecting the lower nodes in a direction perpendicular to the direction of progress.

In an alternative embodiment, the step of generating the relative coordinate information includes sibling nodes connected to each of the upper nodes located upward with respect to the horizontal reference line, connected in an upward direction with respect to each of the upper nodes, and , sibling nodes connected to each of the lower nodes located in the lower direction with respect to the horizontal reference line may be connected in the lower direction with respect to each of the lower nodes.

In an alternative embodiment, generating the relative coordinate information includes identifying an overlapping node related to whether two or more nodes overlap at the same coordinates, and if the overlapping node is identified, the two nodes included in the overlapping node Identifying the number of nodes connected to each of the overlapping nodes, comparing the number of nodes connected to each of the overlapping nodes, and determining movement of at least one node based on the comparison result, and moving the at least one node In this case, it may include the step of moving subordinate nodes of the node involved in the movement.

In an alternative embodiment, generating the relative coordinate information includes identifying an overlapping node related to whether two or more nodes overlap at the same coordinates, and if the overlapping node is identified, the two nodes included in the overlapping node Identifying coordinates corresponding to the starting point of each of the two or more nodes, comparing the identified coordinates corresponding to the starting point of each of the two or more nodes, and determining movement of at least one node based on the comparison result, and the at least one When the node of is moved, it includes the step of moving lower nodes of the node related to movement, and the coordinates corresponding to the starting point may be coordinates related to the starting point of the transition point located in the horizontal direction of each of the two or more nodes.

In an alternative embodiment, the step of generating the absolute coordinate information may include generating the absolute coordinate information based on the x-coordinate with the largest absolute value among the x-coordinates of each of the Obtaining a first correction point, obtaining a second correction point based on the y-coordinate with the largest absolute value among the y-coordinates of each of the nodes located in the upper direction with respect to the origin of the relative coordinate information, and the first It may include generating the absolute coordinate information by performing coordinate transformation on the relative coordinate information based on the correction point and the second correction point.

A computing device according to another embodiment of the present invention is disclosed. The computing device includes a memory that stores one or more instructions and a processor that executes one or more instructions stored in the memory, and the processor executes the one or more instructions to generate power including the above-described distributed power. The system can perform a method of generating a single-line diagram that provides convenience for power demand calculation and protection coordination standard calculation.

According to another embodiment of the present invention, a computer program stored in a computer-readable recording medium is disclosed. The computer program can be combined with a hardware computer to perform a method of generating a single-line diagram that provides convenience for calculating power demand and protection cooperation standards in a power system including distributed power.

Other specific details of the invention are included in the detailed description and drawings.

According to various embodiments of the present invention, it is possible to provide a single-line diagram that improves the convenience of calculating power demand and protection cooperation standards in a power system including distributed power sources.

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

1 is a conceptual diagram illustrating a system in which various aspects of a method for generating a single-line diagram that provides convenience for calculating power demand and protection coordination standards in a power system including distributed power sources related to an embodiment of the present invention can be implemented. shows.
Figure 2 shows a block diagram of a computing device that generates a single-line diagram that provides convenience for calculating power demand and protection coordination standards in a power system including distributed power sources related to an embodiment of the present invention.
Figure 3 shows a flowchart illustrating a method for generating a single-line diagram related to an embodiment of the present invention.
Figure 4 shows a flowchart illustrating a method for generating power analysis information related to an embodiment of the present invention.
Figure 5 shows a flowchart illustrating a method for matching system information between a distribution automation system and a geographic information system related to an embodiment of the present invention.
Figure 6 is an exemplary diagram illustrating a system diagram related to an embodiment of the present invention.
Figure 7 is an exemplary diagram showing a systematic diagram and a systematic tree related to an embodiment of the present invention.
Figure 8 is an exemplary diagram illustrating a system tree and relative coordinate information related to an embodiment of the present invention.
Figure 9 shows an exemplary diagram illustrating relative coordinate information related to an embodiment of the present invention.
Figure 10 is an exemplary diagram illustrating a forward tree and a reverse tree related to an embodiment of the present invention.
Figure 11 shows an exemplary diagram illustrating the process of generating a reverse system tree related to an embodiment of the present invention.
Figure 12 shows an exemplary diagram illustrating the process of generating a reverse system tree related to another embodiment of the present invention.
Figure 13 shows an exemplary diagram illustrating the process of generating a reverse system tree related to another embodiment of the present invention.
Figure 14 shows an exemplary diagram illustrating the process of generating a reverse system tree related to another embodiment of the present invention.
Figure 15 shows an exemplary diagram illustrating the process of generating a reverse system tree related to another embodiment of the present invention.
Figure 16 is an exemplary diagram illustrating a first single line diagram and a second single line diagram related to an embodiment of the present invention.
Figure 17 is an exemplary diagram illustrating first tree structure information and second tree structure information related to an embodiment of the present invention.
Figure 18 is an exemplary diagram illustrating a sub-tree cumulative score calculation process related to an embodiment of the present invention.
Figure 19 is an exemplary diagram illustrating a note count score calculation process related to an embodiment of the present invention.
Figure 20 is an exemplary diagram illustrating a process for modifying tree structure information related to an embodiment of the present invention.
Figures 21 and 22 are diagrams illustrating diagnostic result reports related to an embodiment of the present invention.
Figures 23 to 27 are diagrams illustrating analysis tools related to an embodiment of the present invention.

Various embodiments are now described with reference to the drawings. In this specification, various descriptions are presented to provide an understanding of the invention. However, it is clear that these embodiments may be practiced without these specific descriptions.

As used herein, the terms “component,” “module,” “system,” and the like refer to a computer-related entity, hardware, firmware, software, a combination of software and hardware, or an implementation of software. For example, a component may be, but is not limited to, a process running on a processor, a processor, an object, a thread of execution, a program, and/or a computer. For example, both an application running on a computing device and the computing device can be a component. One or more components may reside within a processor and/or thread of execution. A component may be localized within one computer. A component may be distributed between two or more computers. Additionally, these components can execute from various computer-readable media having various data structures stored thereon. Components can transmit signals, for example, with one or more data packets (e.g., data and/or signals from one component interacting with other components in a local system, a distributed system, to other systems and over a network such as the Internet). Depending on the data being transmitted, they may communicate through local and/or remote processes.

Additionally, the term “or” is intended to mean an inclusive “or” and not an exclusive “or.” That is, unless otherwise specified or clear from context, “X utilizes A or B” is intended to mean one of the natural implicit substitutions. That is, either X uses A; X uses B; Or, if X uses both A and B, “X uses A or B” can apply to either of these cases. Additionally, the term “and/or” as used herein should be understood to refer to and include all possible combinations of one or more of the related listed items.

Additionally, the terms “comprise” and/or “comprising” should be understood to mean that the corresponding feature and/or element is present. However, the terms “comprise” and/or “comprising” should be understood as not excluding the presence or addition of one or more other features, elements and/or groups thereof. Additionally, unless otherwise specified or the context is clear to indicate a singular form, the singular terms herein and in the claims should generally be construed to mean “one or more.”

Those skilled in the art will additionally recognize that the various illustrative logical blocks, components, modules, circuits, means, logic, and algorithm steps described in connection with the embodiments disclosed herein may be implemented using electronic hardware, computer software, or a combination of both. It must be recognized that it can be implemented with To clearly illustrate the interchangeability of hardware and software, various illustrative components, blocks, configurations, means, logics, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented in hardware or software will depend on the specific application and design constraints imposed on the overall system. A skilled technician can implement the described functionality in a variety of ways for each specific application. However, such implementation decisions should not be construed as departing from the scope of the present invention.

The description of the presented embodiments is provided to enable anyone skilled in the art to use or practice the present invention. Various modifications to these embodiments will be apparent to those skilled in the art. The general principles defined herein may be applied to other embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the embodiments presented herein. The present invention is to be interpreted in the broadest scope consistent with the principles and novel features presented herein.

In this specification, a computer refers to all types of hardware devices including at least one processor, and depending on the embodiment, it may be understood as encompassing software configurations that operate on the hardware device. For example, a computer can be understood to include, but is not limited to, a smartphone, tablet PC, desktop, laptop, and user clients and applications running on each device.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

Each step described in this specification is described as being performed by a computer, but the subject of each step is not limited thereto, and depending on the embodiment, at least part of each step may be performed in a different device.

1 is a conceptual diagram illustrating a system in which various aspects of a method for generating a single-line diagram that provides convenience for calculating power demand and protection coordination standards in a power system including distributed power sources related to an embodiment of the present invention can be implemented. shows.

As shown in FIG. 1, a system according to embodiments of the present invention may include a server 100, a user terminal 20, an external server 30, and a network. The components shown in FIG. 1 are exemplary, and additional components may exist or some of the components shown in FIG. 1 may be omitted. The server 100, the user terminal 20, and the external server 30 according to embodiments of the present invention can mutually transmit and receive data for the system according to embodiments of the present invention through a network.

Networks according to embodiments of the present invention include Public Switched Telephone Network (PSTN), x Digital Subscriber Line (xDSL), Rate Adaptive DSL (RADSL), Multi Rate DSL (MDSL), and Very High Speed DSL (VDSL). ), UADSL (Universal Asymmetric DSL), HDSL (High Bit Rate DSL), and local area network (LAN) can be used.

In addition, the networks presented here include Code Division Multi Access (CDMA), Time Division Multi Access (TDMA), Frequency Division Multi Access (FDMA), Orthogonal Frequency Division Multi Access (OFDMA), Single Carrier-FDMA (SC-FDMA), and A variety of wireless communication systems, such as other systems, may be used.

The network according to embodiments of the present invention can be configured regardless of the communication mode, such as wired or wireless, and is composed of various communication networks such as a personal area network (PAN) and a wide area network (WAN). It can be. Additionally, the network may be the well-known World Wide Web (WWW), or may use wireless transmission technology used for short-distance communication, such as Infrared Data Association (IrDA) or Bluetooth. The techniques described herein can be used in the networks mentioned above, as well as other networks.

According to an embodiment of the present invention, the user terminal 20 may refer to any type of node(s) in the system that has a mechanism for communication with the server 100. The user terminal 20 is a terminal that can receive information related to the distribution system through information exchange with the server 100, and may refer to a terminal owned by a user. For example, the user terminal 20 may be a terminal related to a manager who monitors field information (status information, current, voltage, failure status) of distribution facilities in real time and remotely controls the distribution system based on this. For example, the user terminal 20 may receive power demand prediction information, failure prediction information, and real-time fault recovery information related to the distribution system.

User terminal 20 may refer to any type of entity(s) in the system that has a mechanism for communication with server 100. For example, these user terminals 20 include personal computers (PCs), notebooks (note books), mobile terminals, smart phones, tablet PCs, and wearable devices. etc., and may include all types of terminals that can access wired/wireless networks. Additionally, the user terminal 20 may include an arbitrary server implemented by at least one of an agent, an application programming interface (API), and a plug-in. Additionally, the user terminal 20 may include an application source and/or client application.

According to an embodiment of the present invention, the external server 30 may refer to a server that stores information necessary for the server 100. For example, the external server 30 may be a server related to a geographic information system (GIS). The external server 30 may refer to a server related to an information processing system that quantifies and processes various geographical information collected in the region, analyzes and synthesizes the information in various ways according to the user's needs, and provides it. For example, the external server 30 may store information about the locations of a plurality of switches included in the distribution line, utility pole numbers, open/closed status, connected lines, etc.

The external server 30 may be a digital device, such as a laptop computer, notebook computer, desktop computer, web pad, or mobile phone, equipped with a processor and equipped with memory and computing power. The external server 30 may be a web server that processes services. The types of servers described above are merely examples and the present invention is not limited thereto.

According to an embodiment of the present invention, the server 100 may perform analysis on a power network to which distributed power sources (or distributed power sources) are connected. Here, the analysis is related to monitoring of a power network to which distributed power sources are connected, and may include, for example, analysis of fault currents or analysis to compile protection cooperation methods of distributed power sources. For a more specific example, analysis of a power network may relate to information about power outages, information about power supply plans, information about protection cooperation, information about facility planning, and information about section load management. The detailed description of the analysis of the power network described above is merely an example, and the present invention is not limited thereto.

Distribution system infrastructure and operation methods (e.g., Distribution Automation System (DAS)) may have many limitations in accommodating multiple distributed power sources. Since the distribution system is a system designed and operated for the purpose of supplying power to loads, reverse currents may occur when additional power generation sources are connected to the distribution system. If the power flow from the substation to the load is unidirectional, the current flowing in the distribution line may change due to changes in the load, causing the voltage to fluctuate. Since the voltage monotonically decreases from the substation outlet to the end of the distribution line, voltage adjustment of the line can be relatively easily performed using the LDC (Line Drop Compensation) method and transformer tap adjustment. However, if distributed power is introduced in the middle of the distribution line and reverse currents occur in the power system, the voltage at the connection point increases, making it difficult to maintain an appropriate voltage. In other words, due to the connection of distributed power sources, voltage fluctuations may occur due to changes in the power current flow and reverse current flow in the distribution line.

In addition, when distributed power sources are connected, the impedance of the power source becomes small and, in the event of an accident, it may become difficult to detect the cause of the failure on the power source side or the distribution protection equipment side.

More specifically, the current distribution system is designed so that the line configuration and protection coordination system operate based on a unidirectional power flow, so when multiple distributed power sources that generate reverse currents are connected to the system, system reliability and electricity quality are affected. It can cause problems. Additionally, when distributed power sources are connected, as supply/demand power calculations become more complex, it is difficult to determine actual power demand, and power factor calculations may also become more complicated.

In particular, in the distribution system, when a specific line breaks down, protection cooperation in the surrounding area can be important so that the nearest protection device is cut off and only the part connected to the protection device is blacked out. If protection cooperation is not properly implemented, problems may occur, such as judging a fault when it is in a normal state and blocking the line, or not blocking the line in a blocking situation. This problem can result in blocking not only the part connected to the protection device, but also the area itself, which can cause a lot of damage to power consumers.

In order for the protection device to operate during the protection coordination process, the reference point for blocking must be set through the maximum current and fault current at the installed point. In general, in the case of a one-way system, if you only know the length of the wire from the fault point to the breaker, you can calculate the impedance to determine the fault current. However, in the case of distributed power, the formula is complex because it is calculated comprehensively by establishing a formula for each connected power source. Calculation can be difficult. For example, if about 50 to 60 distributed power sources with different patterns are connected, the calculation itself to determine the fault current may be very difficult.

The server 100 of the present invention can easily perform calculations on power demand and protection cooperation standards when connecting multiple distributed power sources in an existing distribution system. Specifically, the server 100 can generate and provide a single-line diagram reflecting the distributed power connected to the distribution line. Here, a single-line diagram may simply represent the existence of electrical devices and their interconnection relationships with a single line. For example, it may be intended to briefly display the connection status of generators, transformers, transmission and distribution lines, circuit breakers, etc. to display general and general information about the power system operation status. The server 100 can represent various distributed power sources included in the power system as a simple single-line diagram with the power source as the root. Since the single-line diagram in the present invention can flexibly reflect the distributed power connected to various locations, when using this single-line diagram, simulation for load calculation and various analyzes (e.g., simulation related to protection coordination) is easy. It can happen. In other words, the server 100 generates a single-line diagram that facilitates simulation for load calculation and various analyzes in response to a distribution line in which multiple distributed power sources are connected, and performs analysis based on this to perform various analyzes corresponding to the power network. Information can be provided. The method by which the server 100 generates a single-line diagram corresponding to a power system in which distributed power sources are linked and provides various analysis information corresponding to the power network based on the single-line diagram will be described later with reference to FIGS. 2 to 20. do.

Although only one server 100 is shown in FIG. 1, it is known in the art that more servers may also be included in the scope of the present invention and that the server 100 may include additional components. It will be clear to those who have the knowledge of. That is, the server 100 may be composed of a plurality of computing devices. In other words, a set of multiple nodes may constitute the server 100.

According to one embodiment of the present invention, the server 100 may be a server that provides cloud computing services. More specifically, the server 100 may be a type of Internet-based computing server that provides a cloud computing service that processes information not on the user's computer but on another computer connected to the Internet. The cloud computing service may be a service that stores data on the Internet and allows users to use it anytime, anywhere through Internet access without having to install necessary data or programs on their computer. The cloud computing service can be used to easily manipulate and manipulate data stored on the Internet. You can easily share and forward with a click. In addition, cloud computing services not only allow you to simply store data on a server on the Internet, but also allow you to perform desired tasks using the functions of applications provided on the web without having to install a separate program, and allow multiple people to view documents at the same time. It may be a service that allows you to work while sharing. Additionally, cloud computing services may be implemented in at least one of the following forms: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), Software as a Service (SaaS), virtual machine-based cloud server, and container-based cloud server. . That is, the server 100 of the present invention may be implemented in at least one form among the cloud computing services described above. The specific description of the cloud computing service described above is merely an example, and may include any platform for constructing the cloud computing environment of the present invention.

A detailed description of the method for analyzing a power network connected to distributed power sources in the present invention will be described later with reference to FIGS. 2 to 20.

Figure 2 is a hardware configuration diagram of a server that provides convenience for calculating power demand and protection cooperation standards in a power system including distributed power sources related to an embodiment of the present invention.

Referring to FIG. 2, a server 100 (hereinafter referred to as “server ( 100)”) includes one or more processors 110, a memory 120 that loads a computer program 151 executed by the processor 110, a bus 130, a communication interface 140, and a computer program ( It may include a storage 150 for storing 151). Here, only components related to the embodiment of the present invention are shown in Figure 2. Accordingly, anyone skilled in the art to which the present invention pertains will know that other general-purpose components may be included in addition to the components shown in FIG. 2.

The processor 110 controls the overall operation of each component of the server 100. The processor 110 includes a Central Processing Unit (CPU), Micro Processor Unit (MPU), Micro Controller Unit (MCU), Graphic Processing Unit (GPU), or any other type of processor well known in the art of the present invention. It can be.

The processor 110 reads the computer program stored in the memory 120 and generates a single-line diagram that provides convenience for calculating power demand and protection cooperation standards in a power system including distributed power according to an embodiment of the present invention. Data processing can be performed for

According to one embodiment of the present invention, the processor 110 can typically process the overall operation of the server 100. The processor 110 provides or processes appropriate information or functions to the user or user terminal by processing signals, data, information, etc. input or output through the components discussed above or by running an application program stored in the memory 120. can do.

Additionally, the processor 110 may perform operations on at least one application or program for executing methods according to embodiments of the present invention, and the server 100 may include one or more processors.

In various embodiments, the processor 110 includes random access memory (RAM) (not shown) and read memory (ROM) that temporarily and/or permanently store signals (or data) processed within the processor 110. -Only Memory, not shown) may be further included. Additionally, the processor 110 may be implemented in the form of a system on chip (SoC) that includes at least one of a graphics processing unit, RAM, and ROM.

Memory 120 stores various data, commands and/or information. Memory 120 may load a computer program 151 from storage 150 to execute methods/operations according to various embodiments of the present invention. When the computer program 151 is loaded into the memory 120, the processor 110 can perform the method/operation by executing one or more instructions constituting the computer program 151. The memory 120 may be implemented as a volatile memory such as RAM, but the technical scope of the present disclosure is not limited thereto.

The bus 130 provides communication functions between components of the server 100. The bus 130 may be implemented as various types of buses, such as an address bus, a data bus, and a control bus.

The communication interface 140 supports wired and wireless Internet communication of the server 100. Additionally, the communication interface 140 may support various communication methods other than Internet communication. To this end, the communication interface 140 may be configured to include a communication module well known in the technical field of the present invention. In some embodiments, communication interface 140 may be omitted.

Storage 150 may store the computer program 151 non-temporarily. When performing a process for creating a single-line diagram through the server 100, the storage 150 can store various information necessary to provide a process for generating a single-line diagram.

The storage 150 is a non-volatile memory such as Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), flash memory, a hard disk, a removable disk, or a device well known in the technical field to which the present invention pertains. It may be configured to include any known type of computer-readable recording medium.

The computer program 151, when loaded into the memory 120, may include one or more instructions that cause the processor 110 to perform methods/operations according to various embodiments of the present invention. That is, the processor 110 can perform the method/operation according to various embodiments of the present invention by executing the one or more instructions.

In one embodiment, the computer program 151 includes steps of generating a system tree in the form of a vertical structure based on section information of the system diagram, generating state coordinate information based on the system tree, and absolute coordinates based on relative coordinate information. A method for generating a single-line diagram that provides convenience for power demand calculation and protection cooperation standard calculation in a power system including distributed power including generating information and generating a single-line diagram based on absolute coordinate information. It may contain one or more instructions to be executed.

The steps of the method or algorithm described in connection with embodiments of the present invention may be implemented directly in hardware, implemented as a software module executed by hardware, or a combination thereof. The software module may be RAM (Random Access Memory), ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), Flash Memory, hard disk, removable disk, CD-ROM, or It may reside on any type of computer-readable recording medium well known in the art to which the present invention pertains.

The components of the present invention may be implemented as a program (or application) and stored in a medium in order to be executed in conjunction with a hardware computer. Components of the invention may be implemented as software programming or software elements, and similarly, embodiments may include various algorithms implemented as combinations of data structures, processes, routines or other programming constructs, such as C, C++, , may be implemented in a programming or scripting language such as Java, assembler, etc. Functional aspects may be implemented as algorithms running on one or more processors. Hereinafter, with reference to FIGS. 3 to 20, a method of analyzing a power network linked to distributed power performed by the server 100 will be described.

Figure 3 shows a flowchart illustrating a method for generating a single-line diagram related to an embodiment of the present invention. The order of the steps shown in FIG. 3 may be changed as needed, and at least one step may be omitted or added. That is, the following steps are only an example of the present invention, and the scope of the present invention is not limited thereto.

According to one embodiment of the present invention, the server 100 may obtain the schematic diagram 10. In one embodiment, schematic diagram 10 may be a power schematic diagram relating to a power network including distributed power sources. The power system diagram 10 may refer to data showing the power system in a drawing to control and manage the flow of electricity in order to maintain the smooth flow of electricity and the quality of electricity. For example, the power system diagram 10 may include linkage information between various nodes, as shown in FIG. 6 . For example, it may include section information about the section that exists between one node and another node. The system diagram shown in FIG. 6 is only an example for understanding the present invention, and the system diagram presented in the present invention is not limited to the system diagram shown in FIG. 6.

Obtaining the schematic diagram 10 according to an embodiment of the present invention may involve receiving or loading the schematic diagram stored in the memory 120. Additionally, obtaining a schematic may involve receiving or loading data from another storage medium, another computing device, or a separate processing module within the same computing device based on wired/wireless communication means.

According to an embodiment of the present invention, the server 100 may generate a vertically structured system tree based on section information of the system diagram 10 (S110).

In one embodiment, section information of the schematic diagram 10 may include information related to connections between one or more nodes. For example, referring to FIG. 7, the schematic diagram 10 may show the connection relationship of each node from the substation (i.e., CB). One or more nodes included in the system diagram 10 may be the first to fifth nodes. In this case, it can be identified through the schematic diagram 10 that the first node is connected to the second node, the second node is connected to the third node, and the third node is connected to each of the fourth to sixth nodes. . Here, the connection from the substation to the fourth node corresponds to the distribution trunk line, and the third node to the fifth node and the third node to the sixth node may correspond to the branches. The trunk line may be an important part of the primary distribution line that is connected to the feeder line and extends to the vicinity of the center of the receiving point depending on the distribution state of the load, and branch lines may branch from the trunk line. The server 100 may extract section data of nodes connected to each other in the system diagram 10 and create a system tree 200 based on this.

More specifically, the server 100 may create the system tree 200 by setting the node related to the reference point as the highest node and connecting one or more nodes according to the hierarchical level based on the highest node. Here, the reference point, for example, relates to the starting point of the system that transmits power to the power demand source, and may mean a substation installed to change the properties of voltage or current in the process of transmitting power. That is, as shown in FIG. 7, the server 100 may generate a vertically structured grid tree 200 based on connection information on each node based on the substation.

According to an embodiment, one or more nodes included in the lineage tree 200 may include a parent node related to a parent node and a child node related to a child node of the parent node. For example, referring to FIG. 7, the first node may be the parent node of the second node, and the second node may be a child node of the first node.

According to one embodiment, the server 100 may identify whether a branch exists between connected nodes based on section information of the schematic diagram 10. A branch relates to a branch line connected to a main line, and may mean that one node is connected to at least two or more nodes. For example, referring to FIG. 7, the third node may be connected to each of the fourth to sixth nodes. In this case, the connection between the third node and the fourth node may correspond to a trunk line, and the connection between the third node and the fifth node and the connection between the third node and the sixth node may each correspond to a branch. That is, the server 100 can determine that a branch exists in the third node by identifying that the third node is connected to two or more nodes.

When the server 100 identifies that a branch exists between connected nodes, it may create one or more sibling nodes corresponding to the branch at the same level as the child node. More specifically, the third node is the parent node of each of the fourth to sixth nodes, and may be a node corresponding to a branch. In this case, the server 100 may create one or more sibling nodes corresponding to each of the fourth, fifth, and sixth nodes, which are child nodes of the third node. In this case, sibling nodes of the fourth node may be the fifth node and the sixth node. That is, the fourth to sixth nodes may be sibling nodes formed at the same level (eg, the same height) as shown in FIG. 7.

According to one embodiment, each of one or more nodes may include point structure information. Here, the point structure information includes first information related to the node ID, second information related to the child node connection link, third information related to the sibling node connection link, fourth information related to the parent node connection link, and additional parent node connection link. May include relevant fifth information. In an additional embodiment, the point structure information, when related to an underground line, may further include connection link information related to the terminal number.

According to one embodiment of the present invention, the server 100 may generate relative coordinate information 300 based on the system tree 200 (S120). The server 100 may generate relative coordinate information 300 related to the display on the two-dimensional coordinates of the nodes based on the system tree 200 generated based on the system diagram 10.

Specifically, the server 100 may set the highest node of the system tree 200 as the origin. For example, in the system tree 200, each node may be connected through a vertical structure according to a hierarchical level based on a reference point. In this case, the reference point of the system tree is related to the system starting point and may be related to the substation. That is, the server 100 may set the best node related to the system starting point (that is, the node related to the reference point (eg, substation)) as the origin. The origin is related to the center point on two-dimensional coordinates and may mean (0, 0).

Additionally, the server 100 may generate a horizontal reference line by sequentially positioning child nodes connected to the top node in a first horizontal direction (eg, to the right, a direction in which the x-coordinate is positive). The horizontal reference line may be related to the distribution trunk of the grid.

To be described in more detail with reference to FIG. 8 , (a) of FIG. 8 illustrates an exemplary lineage tree 200 . As shown in (a) of Figure 8, the highest node exists as a parent node, the first node exists as a child node, the first node exists as a parent node, the second node exists as a child node, and the second node exists as a child node. There are 3rd and 4th nodes as sibling nodes of the node. That is, the first node includes two branches (related to the third node and the fourth node). When attempting to convert the system tree 200 corresponding to (a) of FIG. 8 into relative coordinate information 300, the server 100 creates an origin based on the highest node. That is, node 0 can be set to (0, 0). Thereafter, the horizontal reference line 310 can be created by sequentially connecting child nodes connected to the top node in the first horizontal direction. Specifically, the server 100 may create a horizontal reference line 310 based on the trunk of the system tree. In other words, as shown in (b) of FIG. 8, the highest node (i.e., node 0) is the origin, and the first and second nodes corresponding to the edges are moved in the horizontal direction (i.e., x-axis direction). You can create a horizontal reference line by connecting them sequentially. In other words, the server 100 can create a horizontal baseline by setting the first node connected to the top node to (1, 0) and the second node connected to the first node to (2, 0). .

If a branch exists in each of the top node and child nodes forming the horizontal baseline, the server 100 may sequentially connect sibling nodes corresponding to the branch to the horizontal baseline. For example, referring to FIG. 8, the third node and the fourth node may be sibling nodes of the second node. As shown in (b) of FIG. 8, the server 100 may display each of the third and fourth nodes by connecting them to the first node forming the horizontal reference line 310. In an embodiment, the server 100 may connect one or more sibling nodes corresponding to a branch perpendicular to the horizontal reference line 310. For example, as shown in (b) of FIG. 8, the server 100 may connect each of the third and fourth nodes to the horizontal reference line 310 (i.e., the first node) in the vertical direction. The server 100 connects the third node to the upper direction of the first node and displays it as (1, -1), and connects the fourth node to the lower side of the first node to display it as (1, 1), Relative coordinate information 300 corresponding to the system tree can be generated. That is, when the server 100 has two branches in the same node, the first branch can be connected by rotating in a 90-degree direction, and the second branch can be connected by rotating in a 180-degree direction with the first branch.

According to an additional embodiment, when there are three or more branches in the same node, the server 100 can connect the third branch by rotating it in a 45-degree direction, the fourth branch can be connected by rotating it in a 315-degree direction, and five The first branch can be connected by rotating in a direction of 225 degrees, and the sixth branch can be connected by rotating in a direction of 135 degrees. The server 100 can generate relative coordinate information 300 by sequentially connecting branches of the same node through angular rotation as described above, thereby schematically minimizing interference between each node.

According to one embodiment, when a branch exists in the child nodes corresponding to each of the sibling nodes, the server 100 may connect the child nodes in a direction perpendicular to the progress direction of each sibling node in response to the branch. For a specific example, referring to FIG. 8, although not shown in FIG. 8, a fifth node and a sixth node may be connected to the fourth node. In this case, the 6th node may correspond to a branch to the 4th node. First, the server 100 can set the fifth node to the lower direction of the fourth node according to the existing progress direction. That is, the coordinates of the fifth node can be set to (1, 2). The server 100 may connect the sixth node in a direction perpendicular to the existing progress direction of the node in response to the fourth node corresponding to the branch. For example, the coordinates of the sixth node are set to (2, 1), and may be connected to the fourth node (eg, (1, 1)) so as to be parallel to the horizontal reference line 310. That is, the server 100 may determine the display direction of the branched passage to be 90 degrees (i.e., vertical direction) from the direction before branching. Accordingly, when a branch for each node occurs, a schematic diagram corresponding to the branch may be possible. In other words, it can be easier to identify a branch based on connection information perpendicular to the direction of progress.

In one embodiment, the server 100 may connect sibling nodes connected to each of the upper nodes located upward with respect to the horizontal reference line in the upper direction with respect to each of the upper nodes. Additionally, the server 100 may connect sibling nodes connected to each of the lower nodes located in the lower direction with respect to the horizontal reference line in the lower direction with respect to each of the lower nodes.

To explain in more detail, when a branch occurs in nodes located in the upper direction based on the horizontal reference line (i.e., when a sibling node is included among the upper nodes), the existing direction (or connection direction) of the upper node You can set the coordinates of sibling nodes in the vertical direction. For a specific example, referring to FIG. 9, upper nodes related to the 7th node, 8th node, 9th node, 10th node, and 11th node may exist in the upper direction of the horizontal reference line. Here, the second node may be a branch, and accordingly, the ninth node may be positioned in a direction perpendicular to the direction of progress of the seventh node. Additionally, an 11th node may exist as a branch of the 9th node. In this case, the 11th node corresponding to the branch (i.e., the 11th node, which is a sibling node of the 10th node) may need to be connected to the 9th node in a direction perpendicular to the existing direction of progress. In other words, in principle, the 11th node may be connected to the 9th node in the direction of the 4th node. However, the server 100 may be characterized in that branches connected to sibling nodes of upper nodes are connected in an upward direction. That is, the server 100 can ensure that the 11th node is connected to the 9th node in the upper direction rather than the lower direction.

Conversely, sibling nodes connected to each of the lower nodes located in the lower direction with respect to the horizontal reference line may be connected to the lower direction with respect to each of the lower nodes.

In summary, the server 100 sets the connection direction in connecting sibling nodes (or branches) related to each of the upper nodes and lower nodes (that is, the sibling nodes of the upper nodes are connected in the upper direction, and the lower nodes are connected in the upper direction). By processing nodes' sibling nodes to be connected in the lower direction, it is possible to prevent child nodes from overlapping with the horizontal baseline during the process of expressing (or converting) relative coordinate information. In other words, the above-described configuration has the advantage of generating relative coordinate information so that overlap with the horizontal reference line is minimized.

According to an embodiment of the present invention, when overlap occurs in the process of generating relative coordinate information, the server 100 may reset the coordinates of at least one node among nodes related to the overlap.

More specifically, the server 100 may identify overlapping nodes related to whether two or more nodes overlap at the same coordinates. Overlapping nodes may be two or more nodes recorded on one coordinate during the process of generating relative coordinate information based on a system tree.

According to an embodiment, when an overlapping node is identified, the server 100 may identify the number of nodes connected to each of two or more nodes included in the overlapping node. The server 100 may compare the number of nodes connected to each overlapping node and determine movement of at least one node based on the comparison result. In this case, the server 100 may determine a node related to movement based on the identified location of the overlapping node.

For a more specific example, the server 100 may identify whether the overlapping node is located in at least one of the upper direction and the lower direction based on the horizontal reference line. When the overlapping node is located upward with respect to the horizontal reference line, the server 100 may identify the number of nodes connected in the upward direction to each node corresponding to the overlapping node. For example, the first node of the overlapping node may have 4 nodes connected in the upward direction, and the second node may have 3 nodes connected in the upward direction. In this case, the server 100 may determine to move the second node, which has a relatively small number of nodes connected in the upward direction among the overlapping nodes, in the upward direction.

For another example, when the overlapping node is located in the downward direction based on the horizontal reference line, the server 100 may identify the number of nodes connected in the upward direction to each node corresponding to the overlapping node. For example, the third node of the overlapping nodes may have two nodes connected in the upward direction, and the fourth node may have four nodes connected in the upward direction. In this case, the server 100 may determine to move the third node, which has a relatively small number of nodes connected in the downward direction among the overlapping nodes, in the downward direction.

As another example, the server 100 may identify the number of nodes connected laterally to each node corresponding to the overlapping node. For example, the fifth node of the overlapping nodes may have one node connected to the left, and the sixth node may have two nodes connected to the left. In this case, the server 100 may determine movement to the fifth node, which has a relatively small number of nodes connected in the left direction among the overlapping nodes. The specific numerical description of the number of nodes connected to each node described above is only an example, and the present invention is not limited thereto.

In other words, the server 100 may determine a node containing fewer lower-level nodes in the upper and lateral directions among nodes corresponding to overlapping nodes as the node to be moved. In this case, if the overlapping node is in the upward direction based on the horizontal baseline, the node determined to be moved can be moved in the upward direction. If the overlapping node is in the downward direction based on the horizontal baseline, the node determined to be moved can be moved in the upward direction. can be moved in the downward direction. Additionally, among overlapping nodes, a node containing fewer child nodes in the lateral direction (left or right) may be moved to the right (i.e., the direction of progress when generating relative coordinate information). Additionally, when at least one node among overlapping nodes is moved, the server 100 may move subordinate nodes of the node related to the movement. For example, if the first node among the overlapping nodes is moved upward (that is, the y-coordinate is moved by -1), the y-coordinates of all subordinate nodes of the first node can be moved by -1.

In other words, when overlap between nodes is identified, the server 100 can move a node containing a small number of child nodes to other coordinates. In other words, the possibility of additional overlap can be reduced by moving a node with relatively few child nodes. Additionally, in the process of moving at least one of the overlapping nodes, the server 100 may allow movement to a point where the probability of overlapping occurrence is minimal depending on the location of the overlapping node. That is, the server 100 may move at least one node among the nodes included in the overlapped node in the direction in which relative coordinate information is generated (at least one of the upper, lower, and right directions) according to the location of each overlapped node. .

According to one embodiment of the present invention, when an overlapping node is identified, the server 100 may identify coordinates corresponding to the starting point of each of two or more nodes included in the overlapping node. Coordinates corresponding to the starting point may be coordinates related to the starting point of the passing point located in the horizontal direction of each of two or more nodes. The server 100 may compare the identified coordinates corresponding to the starting points of each of two or more nodes and determine the movement of at least one node based on the comparison result. In this case, the server 100 may determine a node related to movement based on the identified location of the overlapping node.

For a specific example, the overlapping node may be located in an upward direction based on the horizontal reference line and may include a first node and a second node. In this case, the coordinates related to the starting point of the first node may be (3, -2), and the coordinates related to the starting point of the second node may be (1, -1). The server 100 can identify the y-coordinate related to the starting point of the transit point corresponding to each node, and move the node related to the side with the relatively small y-coordinate (i.e., located more upward) in the upward direction. That is, the server 100 can move the first node among the overlapping nodes upward.

For another example, the overlapping node may be located in a downward direction based on the horizontal reference line and may include a third node and a fourth node. In this case, the coordinates related to the starting point of the third node may be (5, 3), and the coordinates related to the starting point of the fourth node may be (1, 4). The server 100 can identify the y-coordinate related to the starting point of the passage corresponding to each node, and move the node related to the side with the relatively smaller y-coordinate (i.e., lower) in the downward direction. That is, the server 100 can move the fourth node among the overlapping nodes in the downward direction.

For another example, the server 100 may include a fifth node and a sixth node as overlapping nodes. In this case, the coordinates related to the starting point of the passage of the 5th node may be (2, -1), and the coordinates related to the starting point of the passage of the 6th node may be (3, -2). The server 100 can identify the x-coordinate related to the starting point of the transition point corresponding to each node, and move the node related to the side with the relatively large x-coordinate (i.e., located further to the right) in the right direction. That is, the server 100 can move the sixth node among the overlapping nodes to the right.

That is, when overlap between nodes is identified, the server 100 may move at least one node to another coordinate based on the coordinates corresponding to the starting point of the transit point. In this case, if the overlapping node is upward based on the horizontal reference line, the node with a higher starting point (i.e., smaller y-coordinate) can be moved upward. Additionally, if the overlapping node is in the downward direction based on the horizontal reference line, the node whose starting point is lower (i.e., has a larger y-coordinate) can be moved in the downward direction. Additionally, regardless of whether it is above or below the horizontal reference line, a node (i.e., a node further to the right) with a larger starting point x position of each transition point of the overlapping node can be moved to the right. That is, according to the location of each overlapping node, the server 100 moves at least one node among the nodes included in the overlapping node in the direction of generating relative coordinate information (at least one direction among the upper, lower, and right directions) so that the overlap is resolved. It can be moved.

According to an embodiment of the present invention, the server 100 may generate absolute coordinate information based on relative coordinate information (S130). Generating absolute coordinate information may be to change all negative numbers in relative coordinate information to positive numbers.

Specifically, the server 100 may obtain the first correction point based on the x-coordinate with the largest absolute value among the x-coordinates of each of the nodes located in the second horizontal direction with respect to the origin of the relative coordinates. Here, the second horizontal direction may mean the left direction (i.e., the direction in which the x coordinate becomes negative). For example, relative coordinate information may have edges connected in the right direction (i.e., the direction in which the x coordinate becomes positive) based on the origin (0, 0). In an embodiment, depending on the branching of the trunk line, a node may be created with a negative x-coordinate, either on the upper or lower right side with respect to the horizontal reference line. In this case, the server 100 may obtain the first correction point based on the leftmost x-coordinate based on the origin.

Additionally, the server 100 may obtain the second correction point based on the y-coordinate with the largest absolute value among the y-coordinates of each of the nodes located in the upper direction with respect to the origin of the relative coordinate information.

That is, the server 100 determines the correction points (i.e., the first correction point and the second correction point) related to the x and y coordinates related to negative numbers based on the coordinate with the largest absolute value (i.e., the 2 correction points) can be obtained.

The server 100 may generate absolute coordinate information by performing coordinate transformation on the relative coordinate information based on the first correction point and the second correction point. In other words, in order to change a negative number (left or top) into a positive number in the relative coordinate information, the server 100 may move the negative number to the right and bottom by the largest absolute value. Accordingly, absolute coordinates can be generated with the upper left corner of the screen as the origin.

According to one embodiment of the present invention, the server 100 may generate a single-line diagram based on absolute coordinate information (S140).

In an embodiment, a single-line diagram may be a simplified, single-line representation of the existence of electrical devices and their interconnection relationships. For example, it may be intended to briefly display the connection status of generators, transformers, transmission and distribution lines, circuit breakers, etc. to display general and general information about the power system operation status. The server 100 can represent various distributed power sources included in the power system as a simple single-line diagram with the power source as the root. This single-line diagram has the advantage of being able to more easily perform simulations for load calculations and various analyzes (for example, simulations related to protection coordination) because it can flexibly reflect distributed power connected to various locations. That is, the server 100 can generate a single-line diagram by extracting only the switches according to the open/closed state based on the absolute coordinate information. In other words, a single-line diagram can be created by resetting the parent-child node relationship of the system tree according to the open/closed state of each node and creating a system tree according to the open/closed state based on this. For example, if there is an independent section that is not connected to the CB as the switch is turned off, the corresponding independent section is not supplied with power, so it can be excluded from the disconnection diagram creation process. A single-line diagram showing only these switches not only improves user readability, but can also be useful for power outages (reports), supply plan review, protection cooperation review, facility planning, and section load management.

Figure 4 shows a flowchart illustrating a process for generating power analysis information related to an embodiment of the present invention. The order of the steps shown in FIG. 4 may be changed as needed, and at least one step may be omitted or added. That is, the following steps are only an example of the present invention, and the scope of the present invention is not limited thereto.

According to one embodiment of the present invention, the server 100 may generate power analysis information through analysis of the system tree. Power analysis information is analysis information related to the power network in which distributed power sources are connected, for example, information on power outages, information on power supply plans, information on protection cooperation, information on facility plans, and section load management. It may contain at least one piece of information.

Specifically, the server 100 may obtain a schematic diagram 10 related to a power network including distributed power (S210). The schematic diagram 10 may be a power schematic diagram related to a power network including distributed power. The power system diagram 10 may refer to data showing the power system in a diagram to control and manage the flow of electricity in order to maintain the smooth flow of electricity and the quality of electricity.

Obtaining the schematic diagram 10 according to an embodiment of the present invention may involve receiving or loading the schematic diagram stored in the memory 120. Additionally, obtaining a schematic may involve receiving or loading data from another storage medium, another computing device, or a separate processing module within the same computing device based on wired/wireless communication means.

According to an embodiment of the present invention, the server 100 may generate a vertically structured system tree based on section information of the system diagram (S220). In one embodiment, section information of the schematic diagram 10 may include information related to connections between one or more nodes. More specifically, the server 100 may create the system tree 200 by setting the node related to the reference point as the highest node and connecting one or more nodes according to the hierarchical level based on the highest node. In one embodiment, the reference point may be related to at least one of a substation and a fault point.

According to an embodiment, one or more nodes included in the lineage tree 200 may include a parent node related to a parent node and a child node related to a child node of the parent node.

According to one embodiment, the server 100 may identify whether a branch exists between connected nodes based on section information of the schematic diagram 10. A branch relates to a branch line connected to a main line, and may mean that one node is connected to at least two or more nodes. When the server 100 identifies that a branch exists between connected nodes, it may create one or more sibling nodes corresponding to the branch at the same level as the child node.

According to one embodiment, the lineage tree may include at least one of a pure lineage tree and a linked lineage tree. Specifically, the server 100 may create a pure system tree with the substation as the top node. Additionally, the server 100 may create a reverse system tree with the failure point as the highest node. That is, the server 100 may generate at least one of a forward tree and a reverse tree.

In an embodiment, as shown in FIG. 10, the pure system tree may be a system tree with the substation as the top node. This forward tree can be used to analyze malfunctions of protection devices. Additionally, the reverse system tree may be a system tree with the failure point as the highest node. This reverse system tree can be used to analyze the malfunction of protection devices and analyze fault currents.

In more detail, a protection device may refer to a device that automatically cuts off the power supply when a distribution line is in an abnormal state (eg, failure) by detecting a failure to protect the line. For example, protection devices may include earth leakage circuit breakers, reclosers, CBs, etc.

Although such a protection device has a failure, the failure state cannot be detected, so there may be a failure related to at least one of non-operation in which the protection device does not operate and malfunction in which an unnecessary operation is performed.

According to the embodiment, malfunction may increase confusion in identifying the fault section due to unnecessary operation of the protection device and may cause a delay in fault recovery. For example, in the event of a line failure, the protection device installed on the load side of the fault section should not operate, but if the fault current generated from the distributed power source connected to the load side of the protection device is greater than the set value, there is a risk that a malfunction may occur in which protection devices that do not need to operate are blocked. There is.

The server 100 may create a reverse system tree based on the system diagram to analyze malfunctions of protection devices. To this end, the server 100 can analyze the distributed power connection location based on the failure point. Additionally, the server 100 can search for a location to add distributed power to the reverse grid tree.

More specifically, the server 100 can determine where the distributed power source is connected to the failure point. For example, the distributed power source may be connected to the point of failure, connected to the load side of the point of failure, or connected to the power side of the point of failure. That is, the server 100 can identify that the distributed power source is connected to at least one of the fault point, the load side of the fault point, and the power side of the fault point. Additionally, the server 100 can determine whether the distributed power source is related to at least one of low voltage and high voltage.

In an embodiment, the server 100 may determine the connection location of the distributed power in the reverse system tree based on the location to which the distributed power is connected and whether the distributed power is low or high voltage.

In detail, as shown in FIG. 11, when there is a low-voltage distributed power source linked to the point of failure (i.e., when the low-voltage distributed power source is linked to the point of failure), the server 100 connects the low-voltage distributed power source to the point of failure. You can create a reverse systematic tree by setting it as a branch of merit.

According to one embodiment, as shown in FIG. 12, when a high-voltage distributed power source is connected to the load side of the fault point, the server 100 sets the distributed power source as a branch of the fault point to create a reverse system tree. You can.

In one embodiment, when the distributed power source connected to the load side of the fault point is low voltage, as shown in FIG. 12, one more node may be added between the low voltage distributed power sources connected to the fault point. .

In addition, as shown in FIG. 13, it is connected to the load side of the fault point, but if it must be inserted into an already registered branch (i.e., in the case of the power side of an already registered distributed power source), the server 100 connects to the corresponding distributed power source. A reverse system tree can be created by setting as a branch between the fault point and the pre-registered distributed power source.

In addition, as shown in FIG. 14, when the main line connection point of the distributed power is on the load side of the main line connection point of the fault point, the server 100 sets the main line connection point of the fault point as the main line of the reverse system tree and connects the distributed power main line to the load side. You can create a reverse system tree by setting connection points as branches.

According to one embodiment of the present invention, when the distributed power source is linked to the power source side of the fault point, the server 100 inserts the distributed power source into the upper node of the node registered as the power source side of the distributed power source, as shown in FIG. 15. This allows you to create a reverse system tree.

As described above, the server 100 can determine the connection location of the distributed power in the reverse system tree based on the location where the distributed power is connected and whether the distributed power is low voltage or high voltage. That is, the server 100 can display the linked location of distributed power sources in the process of generating a reverse system tree based on the fault point, and thus, it is possible to generate subsequent power analysis information.

According to embodiments, malfunction may affect the entire line because the fault is not resolved. In the case of such non-operation, it may occur because the fault current is smaller than the set value at which the protection device operates. Accordingly, the set value for fault detection may need to be larger than the maximum load current at the point of installation of the protection device.

Specifically, the server 100 may generate a pure system tree based on the system diagram in order to analyze the malfunction of the protection device. To this end, the server 100 can analyze the distributed power connection location based on the substation. Additionally, the server 100 can search for a location to add distributed power to the pure grid tree. In an embodiment, the process by which the server 100 creates a pure tree may be the same as the process performed in S110 of FIG. 3 . That is, the server 100 may create a system tree based on section data of nodes connected to each other in the system diagram.

In other words, when the server 100 wants to generate power analysis information related to malfunction of the protection device, it can generate a reverse system tree based on the failure point, and if it wants to generate power analysis information related to malfunction of the protection device, In this case, a pure system tree can be created based on the substation. In particular, in the process of creating a reverse system tree based on a fault point, the server 100 can link and display distributed power in the reverse system tree according to the connection location of the distributed power and whether it is high voltage or low voltage. This can generate analysis information related to the malfunction of protection devices in a power network where multiple distributed power sources are connected. For example, as the calculation of fault current becomes easier based on the reverse system tree generated based on the fault point, meaningful information related to the malfunction of the protection device (e.g., obtaining the reference point for blocking through the fault current) can be obtained. .

According to one embodiment of the present invention, the server 100 may generate power analysis information through analysis of the system tree (S230). The server 100 may generate relative coordinate information based on the system tree. Additionally, the server 100 may generate absolute coordinate information based on relative coordinate information. Additionally, the server 100 may generate a single-line diagram based on absolute coordinate information. Among the features related to the process in which the server 100 generates a single-line diagram based on the system tree, refer to the content described in FIG. 4 for features that overlap with the features described above in relation to FIG. 3, and the description thereof is omitted here. Let's do it.

In one embodiment, server 100 may generate a single-line diagram based on a system tree. Here, the phylogenetic tree may include at least one of a forward phylogenetic tree and a reverse phylogenetic tree. The server 100 can generate a forward system single-line diagram based on the forward system tree, and can generate a reverse system single-line diagram based on the reverse system tree.

Additionally, the server 100 may generate power analysis information through analysis of a single-line diagram generated based on the system tree. The server 100 can generate power analysis information through analysis of the forward system single-line diagram corresponding to the forward system tree, and generate power analysis information through analysis of the reverse system single-line diagram corresponding to the reverse system tree. You can. In an embodiment, the server 100 may calculate the current, power demand power factor, power demand, etc. in response to each switch included in the power network based on at least one of the forward system single-line diagram and the reverse system single-line diagram. Based on this, power analysis information can be generated including at least one of information about power outages, information about power supply plans, information about protection cooperation, information about facility plans, and information about section load management.

According to an embodiment of the present invention, the server 100 may generate power analysis information through analysis of a single-line diagram. Specifically, the server 100 can calculate the magnitude and direction of the current corresponding to each switch included in the power network, and based on this, obtain information about power demand from the switch current.

The presence of a current value in a specific switch may mean that power consumption or generated power exists after the switch. In other words, the current value measured at the switch may indicate the load (demand or generation) situation after the switch.

In the present invention, the power network based on power analysis is one in which distributed power sources are connected. As supply/demand calculations according to the direction of the current become more complex, it is difficult to determine the actual power demand, and power factor calculation can also be complicated. there is. In general, the unidirectional switch current (i.e., the switch current when distributed power is not connected) can be calculated through the following equation.

Switchgear current =

That is, the switch current when the distributed power source is not connected can be calculated through the composite value of the active current and reactive current flowing from the switch.

When distributed power is connected to the load side of the switch, the switch current may be the composite value of the current obtained by subtracting the distributed power generation amount from the demand power, as shown in the equation below.

Switchgear current =

In addition, when the distributed power supply is not connected, the total power demand of the line can be calculated through the sum of the power demand of high-voltage customers and low-voltage customers, and can be expressed through the following equation.

Line demand power =

Additionally, if the distributed power source is not connected, the power factor ( ) can be calculated through the following equation.

Power factor ( ) = = active power /

However, if there are low-voltage customers after the switch, it may be difficult to determine the low-voltage demand power (i.e., low-voltage demand active power and low-voltage demand reactive power), making it difficult to calculate switch current, total demand power, and power factor.

According to one embodiment of the present invention, the server 100 can calculate the switch current, power factor, and power demand even when distributed power sources are connected.

In one embodiment, when there are no low-voltage customers after the switch, the server 100 may calculate the switch current using the following equation.

Switchgear current =

In the above equation, high voltage may refer to active and reactive power related to high voltage demand, and DR may refer to the amount of power generation from distributed power. That is, if there are no low-voltage customers, the switch current may be the composite value of the current obtained by subtracting the power generation of the distributed power source from the high-voltage demand power of the server 100.

Additionally, in one embodiment, when there is a low-voltage customer after the switch, the server 100 may calculate the switch current (I _sw ) using the following equation.

I _sw =

These formulas can be organized as follows.

For convenience of organization, each power is expressed as follows in the formula.

High-pressure active power: , high-pressure reactive power: , distributed power active power: , distributed power reactive power: , low-pressure active power: = and low-pressure reactive power: =

(I _sw ) ² =

(I _sw ) ² = [Formula 1]

here, In the power factor calculation solution process as follows, k( ) - It can be defined as:

Specifically, the power factor can be solved using the following equation.

Power factor ( ) =

-> = /

-> 1 + = -> 1 + =

-> = x

-> = x =

∴ = = k( ) -

in other words, = k( ) - It can be defined as, which can be applied to [Formula 1] and organized as the following formulas.

(I _sw ) ² =

=

Where, C = , and D = It can be.

(I _sw ) ^{2 =} = (1+

-> (1+ = 0 [Formula 2]

According to the embodiment, it is possible to determine whether there is a forward current or a reverse current through a root formula based on [Equation 2].

ax ² + bx + c = 0

(Formula of roots) =

In a specific embodiment, the server 100 may determine a positive flow when one result of performing a root formula based on [Equation 2] is a positive number and the other is a negative number. Specifically, the server 100 determines that the variable value corresponding to the formula is >0, If <0, it can be determined as pure algae.

In this case, the server 100, By substituting each variable corresponding to (i.e., low-pressure demand active power) can be calculated, and the calculated based on (i.e., low-voltage demand reactive power) is calculated ( = )can do.

In another embodiment, the server 100 may determine a reverse flow if all result values, as a result of performing the root formula based on [Equation 2], are positive numbers. Specifically, the server 100 determines that the variable value corresponding to the formula is >0, If >0, it can be judged as reverse current.

In this case, the server 100 By substituting each variable corresponding to (i.e., low-pressure demand active power) can be calculated, and the calculated based on (i.e., low-voltage demand reactive power) is calculated ( = )can do.

In summary, the server 100 can determine whether there is a forward flow or a reverse flow based on the result of performing the root formula based on [Equation 2]. In addition, when the server 100 determines that it is a pure algae, If the low-pressure power demand (effective and invalid) is calculated based on and determined to be a reverse current, Based on the formula, low-voltage power demand (effective and reactive) can be calculated.

The server 100 can calculate low-pressure demand power (i.e., low-pressure demand active power and low-pressure demand reactive power) in response to each situation of forward and reverse flow, and thus can calculate the total demand power and power factor of the line. .

As described above, even when a distributed power source is connected, the server 100 can determine the direction of the switch current and calculate the power factor and demand power accordingly. In other words, it is possible to calculate the active and reactive currents related to low-voltage demand and determine who supplies power at the switch location, so the load status related to the location can be determined. Additionally, the server 100 may generate power analysis information based on the calculated information. Power analysis information is analysis information related to the power network in which distributed power sources are connected, for example, information on power outages, information on power supply plans, information on protection cooperation, information on facility plans, and section load management. It may contain at least one piece of information.

Figure 5 shows a flowchart illustrating a method for matching system information between a distribution automation system and a geographic information system related to an embodiment of the present invention. The order of the steps shown in FIG. 5 may be changed as needed, and at least one step may be omitted or added. That is, the following steps are only an example of the present invention, and the scope of the present invention is not limited thereto.

A series of facilities that produce and supply electricity to users is called a power system (or power network). The power system is composed of various facilities, and can largely be composed of power generation facilities, transmission facilities, substation facilities, and distribution facilities. The power automation system may include a system that remotely monitors and controls the facilities that make up the power system.

These power automation systems include the Energy Management System (EMS), which controls the demand, supply, and transportation of all energy, and the Supervisory Control And Data (SCADA) system, which monitors and controls transmission and substation facilities. Acquisition), Distribution Automation System (DAS), which is responsible for facility management and operation of the distribution system, and Automatic Meter Reading (AMR), which remotely reads the customer's meter.

In an embodiment, the distribution system (or distribution automation system) currently in operation in Korea can remotely monitor and control only the switches installed in the distribution line. Meanwhile, an intelligent distribution system can refer to a system capable of remote monitoring and control of all power facilities from the substation to the distribution system and consumers. The intelligent distribution system manages high and low voltage distribution facilities based on GIS and can perform integrated distribution operation functions by linking distributed power with systems such as SCADA, DAS, AMR, and TCS (Trouble Call System). For example, transformers, voltage controllers, and electric quality controllers with built-in diagnostic sensors can enable optimized operation of the distribution system, such as minimizing distribution system losses, load equalization, voltage and reactive power control, and electricity quality management.

However, in the current intelligent distribution system, geographic information system (GIS) and power system information are not interconnected, so it may be difficult to integrate them to create and manage a distribution system (i.e., power network). Accordingly, the server 100 of the present invention uses a geographic information system (GIS) and a distribution automation system (DAS) to implement a distribution line integrated operation functional distribution intelligence system that links distributed power with systems such as SCADA, DAS, AMR, and TCS. ) You can check and harmonize the liver system.

According to one embodiment of the present invention, the server 100 may generate first tree structure information by converting the first single-line diagram related to the distribution automation system into a tree structure (S310). The distribution automation system may include a comprehensive system that can reduce the outage section and shorten the outage time by acquiring and monitoring field information of distribution facilities in real time through electrical and electronic communication devices and controlling them remotely. Monitoring and control of distribution line switches can be performed through the distribution automation system.

The first single-line diagram may be a single-line diagram generated through information acquired in real time in the field through a distribution automation system, for example, as shown in (a) of FIG. 16. In an embodiment, the distribution automation system may be characterized by registering the system based on user input. That is, the first single-line diagram generated through information obtained from the distribution automation system may be generated based on the system registered based on the user's input. The server 100 may convert this first single-line diagram into a tree structure and generate first tree structure information. For example, the server 100 may generate a first tree structure as shown in (a) of FIG. 17 based on the first single-line diagram shown in (a) of FIG. 16.

According to an embodiment of the present invention, the server 100 may generate second tree structure information by converting a second single-line diagram related to a geographic information system (GIS) into a tree structure (S320). A geographic information system may include an information system that processes and manages geographic information, that is, spatially distributed information. The server 100 may convert this second single-line diagram into a tree structure and generate second tree structure information. For example, the server 100 may generate a second tree structure as shown in (b) of FIG. 17 based on the second single-line diagram shown in (b) of FIG. 16.

The tree structure may be a structure in which a node related to a reference point is the top node, and one or more nodes are connected downward according to the hierarchical level based on the top node. One or more nodes may include a parent node related to a parent node and child nodes related to child nodes of the parent node.

According to an embodiment, the system information included in each system may include information on at least one of distribution line ID, line name, computerized number, device type, terminal number, open/closed status, and automation status.

According to one embodiment, the reason why the server 100 changes each single-line diagram (i.e., the first single-line diagram and the second single-line diagram) into each tree structure may be to compare and match each system information. there is. That is, the server 100 can inspect or compare the systems of each system by changing each single-line diagram into each tree structure.

According to one embodiment, the first single-line diagram related to the distribution automation system (DAS) is registered in the system based on the user's input (i.e., the user's manual work), as described above, and is thus registered in the system of each system. It can be a standard for comparison. In other words, the second single-line diagram can be modified based on the first single-line diagram.

According to an embodiment of the present invention, the server 100 performs a comparison of the first tree structure information and the second tree structure information, and according to the comparison result, system information related to at least one of the distribution automation system and the geographic information system. can be modified (S330).

Specifically, the server 100 may perform a comparison of each tree structure information corresponding to each connected hierarchical level, starting from the highest node of each tree structure information. That is, the server 100 can compare the connection information of each tree structure information in order based on the substation CB.

According to an embodiment, the server 100 may perform comparison of each tree structure information based on whether a branch exists at a corresponding level of each tree structure information.

Comparison can be performed by checking whether a branch exists at the same location (i.e., at the same level) corresponding to each of the first tree structure information and the second tree structure information. According to embodiments, identifying the presence or absence of a branch may be important for comparing child nodes on each structure. For example, when a branch exists at the same level, since the nodes each of the nodes corresponding to the branch includes as lower nodes are different, comparison of the lower nodes may be performed depending on whether there is a branch.

In one embodiment, if there is no branch in both the first tree structure information and the second tree structure information corresponding to the same level, the server 100 may move to a lower level and perform comparison. That is, if there is no branch, comparison between nodes can be performed at the same level corresponding to each tree structure, and if there is a match, it can be moved to the next level and comparison of nodes between each tree structure can be performed.

In other words, if there is no branch in both the first tree structure information and the second tree structure information (i.e., both sibling nodes do not exist with respect to the position (level)), the lineage matches, and the following nodes A sequential comparison can be performed.

If a branch exists in both the first tree structure information and the second tree structure information corresponding to the same level, the server 100 adjusts the branch information of the second tree structure information based on the branch information of the first tree structure information. You can. That is, if sibling nodes exist at the same location (level) in the system of each system, the server 100 can adjust the branch information of the second tree structure information based on the branch information of the first tree structure information. there is. In other words, the branch information of the second tree structure information can be adjusted based on the corresponding branch information of the first tree structure information. In the embodiment, the first tree structure information is related to the distribution automation system (DAS) in which the system is registered based on the user's input (i.e., the user's manual work), so it can be a standard for comparing the systems of each system.

Specifically, the server 100 may adjust the branch information of the second tree structure information based on a comparison between the cumulative sub-tree scores corresponding to each tree structure information at the corresponding level. That is, the server 100 may calculate the cumulative sub-tree scores of each node corresponding to each branch, and adjust the branch information of the second tree structure information based on the calculated cumulative sub-tree scores. In other words, the server 100 may compare the accumulated sub-tree scores and adjust the second tree structure information to correspond to the same accumulated sub-tree score.

For a specific example, referring to FIG. 17, the first tree structure information and the second tree structure information indicate that the edges and branches do not match at the fourth level where the third node, fifth node, and ninth node are located. Able to know. That is, the second tree structure information may need to be modified based on the edges and branches indicated in the first tree structure information. To this end, the server 100 calculates a cumulative sub-tree score corresponding to each node located at a level where a branch exists, and converts the second tree structure information to the first tree through comparison of the calculated cumulative sub-tree scores. It can be modified to correspond to structural information.

For example, in the first tree structure information, the cumulative sub-tree score of the third node located on the leftmost level of level 4 may be 4, the cumulative sub-tree score of the fifth node may be 15, and the cumulative sub-tree score of the ninth node may be 15. The subtree cumulative score may be 15. Additionally, in the second tree structure information, the accumulated sub-tree score of the 5th node located on the leftmost side of the 4th level may be 15, the accumulated sub-tree score of the 3rd node may be 4, and the sub-tree of the 9th node may be 4. The cumulative score may be 15. In this case, the server 100 may compare the accumulated sub-tree scores corresponding to each node of each tree structure information and modify the second tree structure information to correspond to the first tree structure information. That is, the server 100 may move the third node with a cumulative sub-tree score of 4 to the leftmost in the second tree structure, and position the fifth node with a cumulative sub-tree score of 15 in the middle. In other words, the server 100 may modify the second tree structure information so that the cumulative scores of each subtree are sorted as 4, 15, and 15, based on the first tree structure information. That is, edges and branches incorrectly expressed in the second tree structure information can be displayed correctly. The detailed numerical description of the cumulative sub-tree scores of nodes included in each tree structure described above is only an example, and the present invention is not limited thereto.

The sub-tree cumulative score may be calculated by summing the tree scores of child nodes. Specifically, if there are no sibling nodes, or even if there are sibling nodes, if the node is located at the leftmost level in the same level of the tree structure, the tree score is based on the parent node score corresponding to the parent node and the currently corresponding level score. can be created. Additionally, if the node includes a sibling node on the left side corresponding to the same level of the tree structure, it may be generated based on the current level score and the tree score of the sibling node located on the left side. The cumulative sub-tree score can be calculated by summing the tree scores of each sub-node including itself.

For a specific example, referring to (a) of FIG. 18, the T node is the highest node and has no parent node, so the tree score may be '1'. The server 100 may calculate the tree score as '3' (i.e., 1+2) based on the score of the parent node corresponding to the first node being '1' and the current level being '2'. The server 100 may calculate the tree score as '6' (i.e., 3+3) based on the score of the parent node corresponding to the second node being '3' and the current level being '3'. In addition, the server 100 sets the tree score to '9' (i.e., 3+6) based on the current level of the third node being '3' and the score of the sibling node located on the left being '6'. It can be calculated as: Additionally, the server 100 may calculate the tree score as '10' (that is, 10) based on the score of the parent node corresponding to the fourth node being '6' and the current level being '4'. In this case, the server 100 may calculate the cumulative sub-tree score by adding up the tree scores corresponding to each node. The server 100 may calculate the cumulative server tree score as 29 (i.e., 1+3+6+9+10).

In one embodiment, the server 100 determines that there is no branch in the first tree structure information corresponding to the same level and that there is a branch in the second tree structure information, or that there is a branch in the first tree structure information corresponding to the same level. If a branch exists but does not exist in the second tree structure information, the cumulative sub-tree score for each branch of each tree structure information can be checked to identify a matching branch in which the cumulative sub-tree scores match each other. The server 100 may perform a check on matching branches corresponding to the same level and process branches that are not matching branches as inconsistent. That is, the server 100 may perform a check only in response to matching branches and treat all remaining branches (i.e., branches with different cumulative subtree scores) as inconsistent.

That is, the server 100 can identify matching branches in response to whether a branch has occurred by introducing the concept of a sub-tree cumulative score corresponding to each node included in each tree structure information. Additionally, the server 100 can modify each tree structure information based on matching branches, thereby matching the lineages in each system.

In a further embodiment, the subtree cumulative score may include a node count score for additional verification of matching branches. The node count score may be calculated for additional verification of matching branches.

For example, depending on the number of cases, the branch type may be different, but the same cumulative subtree score may be calculated. In other words, as duplication occurs in some cases, if a match is determined simply through the subtree cumulative score, there may be a possibility of determining that the nodes are the same even if they are different nodes.

For a more specific example, referring to FIG. 18, the branch types of each tree structure may be different, but the calculated cumulative sub-tree scores may be the same. Specifically, the cumulative subtree score corresponding to the tree structure corresponding to (b) of FIG. 18 may be 29. Specifically, the T node is the highest node and has no parent node, so the tree score may be '1'. The server 100 may calculate the tree score as '3' (i.e., 1+2) based on the score of the parent node corresponding to the first node being '1' and the current level being '2'. The server 100 calculates the tree score as '5' (i.e., 2+3) based on the current level of '2' corresponding to the second node and the score of the sibling node located on the left being '3'. You can. Additionally, the server 100 calculates the tree score as '8' (i.e., 5+3) based on the tree score of the parent node corresponding to the third node being '5' and the current level being '3'. You can. Additionally, the server 100 calculates the tree score as '12' (i.e., 8+4) based on the tree score of the parent node corresponding to the fourth node being '8' and the current level being '4'. You can. In this case, the server 100 may calculate the cumulative sub-tree score by adding up the tree scores corresponding to each node. The server 100 can calculate the cumulative server tree score as 29 (i.e., 1+3+5+8+12).

That is, each of (a) and (b) of FIG. 18 has a different branch form, but may have the same cumulative subtree score. If the server 100 performs a comparison between system tree information corresponding to each system based only on the subtree cumulative score, there is a risk that an error may occur. Accordingly, the server 100 can calculate a node count score for performing additional verification.

The node count score can be calculated through the sum of the first tree scores calculated for each of the lower nodes, with itself as the top node. Here, the first tree score is added by a first set value in relation to the hierarchical level based on the top node of each tree structure information, and a second score in relation to one or more sibling nodes corresponding to the same level of each tree structure information. It may be characterized as being determined by adding up a set value.

Here, the first set value and the second set value may be related to different place values. For example, if the first set value is a number related to the ones place (eg, 1), the second set value may be a number related to the hundreds place (eg, 100).

For a more specific example, referring to (a) of FIG. 19, the T node is the highest node and may have a first tree score of '1'. The server 100 calculates the first tree score as '2' based on the score of the parent node corresponding to the first node being '1' and adding the first set value (e.g., 1) according to the level. You can. The server 100 may calculate the first tree score as '3' based on the score of the parent node corresponding to the second node being '2' and adding the first set value according to the level. In addition, the server 100 sets the first tree score to '103' based on adding a second set value to the first tree score of the sibling node based on including a sibling node on the left side corresponding to the third node. It can be calculated. Additionally, the server 100 may calculate the first tree score as '4' based on the score of the parent node corresponding to the fourth node being '3' and adding the first set value according to the level.

In this case, the server 100 may calculate the node count score by adding up the first tree scores corresponding to each node. The server 100 can calculate the node count score as 113 (i.e., 1+2+3+103+4).

Additionally, referring to (b) of FIG. 19, the T node is the highest node and may have a tree score of '1'. The server 100 calculates the first tree score as '2' based on the score of the parent node corresponding to the first node being '1' and adding the first set value (e.g., 1) according to the level. You can. The server 100 calculates the first tree score as '102' based on adding a second set value to the first tree score of the sibling node based on including a sibling node on the left side corresponding to the second node. You can. Additionally, the server 100 may calculate the first tree score as '103' based on the score of the parent node corresponding to the third node being '102' and adding the first set value according to the level. Additionally, the server 100 may calculate the first tree score as '104' based on the score of the parent node corresponding to the fourth node being '103' and adding the first set value according to the level.

In this case, the server 100 may calculate the node count score by adding up the first tree scores corresponding to each node. The server 100 can calculate the node count score as 312 (i.e., 1+2+102+103+104).

That is, referring to (a) and (b) of FIG. 19, when the subtree cumulative score is used to identify a matching branch between tree structure information corresponding to each system, even if the branch shape is different, it is recognized as the same branch. There may be a possibility. On the other hand, when using the node count score, since each type of branch has a different output value, errors can be prevented in the process of identifying matching branches.

According to an embodiment, when identifying a matching branch, the server 100 may identify a node count score corresponding to each tree structure information. The server 100 may determine whether the matching branch is appropriate through comparison between node count scores corresponding to each tree structure information.

That is, the server 100 can identify matching branches in response to whether a branch has occurred by introducing the concept of a sub-tree cumulative score corresponding to each node included in each tree structure information. Additionally, if the subtree cumulative scores match, the server 100 may perform additional verification using the node count score to identify matching branches. Additionally, the server 100 may modify each tree structure information based on matching branches.

Specifically, as shown in FIG. 20, the server 100 may adjust the branch information of the second tree structure information based on the branch information of the first tree structure information to make the systems in each system consistent. Accordingly, since geographic information and power system information can be interconnected, a distribution system (i.e., power network) can be created and managed by integrating them. In other words, it can be possible to implement an integrated distribution line operation function distribution intelligence system that links distributed power with systems such as SCADA, DAS, AMR, and TCS.

According to one embodiment of the present invention, the server 100 may generate a diagnosis result report based on comparison of first power system information related to the distribution automation system and second power system information related to the geographic information system.

The diagnosis result report is information to make the user aware of the difference between power system information corresponding to each system, and may be generated based on a comparison result between power system information related to each system. The diagnosis result report may include information related to differently recorded power system information. For example, the diagnosis result report may include information to make the user aware that different utility pole numbers are recorded in each of the distribution automation system and the geographic information system in relation to the first switch located in a specific section.

For a specific example, the diagnosis result report may include a first power system information display area (S10) and a second power system information display area (S20), as shown in FIG. 21. In this case, the diagnosis result report may be characterized in that separate highlights are applied to correspond to different system information.

Referring to FIG. 21, in the case of the first power system information display area (S10) related to the distribution automation system, the computerized number is recorded as '3795B571' corresponding to the electric pole number 'Chunggi 214', but the number related to the geographic information system is recorded as '3795B571'. 2In the case of the power system information display area (S20), the computerized number may be unrecorded (null) corresponding to the same utility number 'Chunggi 214'. In this case, the server 100 can identify that the recorded information on each system information display area is different and apply highlighting to the unrecorded portion, as shown in FIG. 21. This highlighting allows users to easily identify discrepancies between the two systems.

For another example, referring to FIG. 21, in the second power system information display area (S20), a plurality of utility pole numbers below the pole number 'Chunggi S115' and information corresponding to each pole number are recorded, but the first power system information display area (S20) In the power system information display area (S10), information corresponding to the utility pole number 'Chunggi S115' and pole numbers below the corresponding column may not be recorded (S30). Through these diagnostic result reports, users can easily identify information that has not been recorded on each system, i.e., missing information.

For another example, the diagnosis result report includes information about different computerized numbers in each of the first power system information display area (S10) and the second power system information display area (S20), as shown in FIG. 22. It may be characterized in that a highlighting mark is applied correspondingly. For example, since the computerized number has to be manually entered into the system by the user, errors may occur during the input process. In the diagnosis result report, when the computerized numbers recorded in relation to each system are entered differently, each display area can be provided by highlighting the differently recorded computerized numbers so that they can be easily identified. .

For example, if the above diagnosis result report is not provided, manual processing is inevitable because the user must manually search or identify the pole number in each system and compare information on both systems.

As described above, the server 100 includes power system information corresponding to each of the distribution automation system and the geographic information system, and provides a diagnosis result report that allows the user to more easily identify different information. It can provide convenience in managing systems by matching them.

According to one embodiment of the present invention, the server 100 may provide an analysis tool related to power analysis information. Specifically, the server 100 is an analysis tool that visually easily displays information about power analysis information, receives setting values for performing various simulations on a power network, calculates the resulting results, and provides them to the user. can be provided. This analysis tool may be related to a user interface for receiving setting value input from the user, calculating and displaying the corresponding output value. A more detailed description of the analysis tool will be described later with reference to FIGS. 23 to 27.

According to one embodiment, the analysis tool may display a single-line diagram generated corresponding to the power network. As an example, a single-line diagram displayed through an analysis tool may be as shown in FIG. 23. In an embodiment, the single-line diagram shown in (a) of FIG. 23 may be a single-line diagram related to a distribution automation system, and the single-line diagram shown in (b) of FIG. 23 may be a single-line diagram related to a geographic information system. there is. As shown in FIG. 23, the server 100 can compare and display single-line diagrams related to each system through an analysis tool. Referring to FIG. 23, it can be seen that the different parts of the two systems are visually recognized as they are displayed through a single line diagram. In other words, by expressing system data related to each system with the same data structure (eg, single-line diagram), system structure comparison between each system can be facilitated. Accordingly, the user can compare the discrepancies in each system relatively easily by comparing the single-line diagrams corresponding to the two systems.

According to one embodiment, the analysis tool may allow various visual expressions when displaying and providing a single-line diagram. Visual expression is intended to help users more intuitively perceive the connection characteristics of the system, and may refer to visual information expressed on a single-line diagram.

For a specific example, each switch may be expressed in a different shape on a single-line diagram depending on the operation method. Referring to FIG. 24, in the case of a switch that can be turned on/off remotely, it is indicated by a circle on the single-line diagram, and in the case of a switch that can be turned on/off manually, it can be indicated by a square.

For another example, a switch that is on in the grid can be displayed in green color, and a switch that is off in the grid can be displayed in red color.

As another example, the current value corresponding to each switch can be displayed and provided on a single line diagram. In this case, the corresponding current value of each switch can be expressed as a negative or positive number depending on the direction of the current. For example, in the case of a switch corresponding to reverse current, the current value can be displayed as a negative number.

For an additional example, it is possible to determine who supplies power at a specific location on a single-line diagram and display different colors for each section of the line. For example, referring to Figure 24, in the case of line supply, the color of the line is displayed in blue, and in the case of distributed power supply, the color of the line is displayed in green, and simultaneous supply (i.e., supply of both line and distributed power) In this case, the preferred color can be displayed in orange. In other words, it can be easier to identify supplied power by analyzing customer distribution and distributed power output and displaying a single-line diagram through different visual expressions for each section.

In addition, as shown in Figure 24, information related to current, voltage, switch name, demand source, etc. can be displayed in connection with each section. The detailed description of the single-line diagram display method or visual expression described above is only an example to aid understanding of the present invention, and the present invention is not limited to the above description.

This visual representation allows users to perceive information about the system situation more intuitively.

According to one embodiment of the present invention, the analysis tool can provide various simulation functions based on a single line diagram. For example, the analysis tool may provide simulation functions related to changes in distribution line demand, provide simulation functions related to new facility construction, or provide simulation functions related to distributed power fault current analysis and protection coordination.

In an embodiment, the analysis tool may receive demand change information related to a specific switch related to a user's input, and may perform a simulation related to demand change based on the demand change information. For example, a user can select a specific distributed power source from a single-line diagram and input a changed setting value for the amount of power generation (e.g., an increased amount of power generation compared to the existing amount) to the corresponding distributed power source. The analysis tool can perform a simulation to monitor whether overvoltage occurs due to an increase in power generation based on the changed settings input by the user. In other words, by using an analysis tool, it is possible to detect whether overvoltage or undervoltage occurs as the amount of distributed power generation changes (increases or decreases) in relation to a specific section.

Additionally, in embodiments, the analysis tool may perform simulations to analyze the ripple effects associated with changes to the system. For example, a simulation related to the analysis of ripple effects due to system changes may be a simulation that can be used when the system changes due to line failure, work, or new line construction. Referring to FIG. 25, the user can input a switch selection setting value for system change in response to a specific section. In this case, the set value may include information about whether the switch is on the power side or the load side, information about the switching load, information about the amount of power generation, and information about the current. Based on information input from the user, the analysis tool can perform simulations related to the ripple effects that may occur in the surrounding area when the system changes in response to a specific section.

Additionally, in embodiments, the analysis tool may provide simulations related to new facility construction. Simulations related to new facility installation may be intended to test current, voltage and tidal current fluctuations in advance when new customers are connected to the line. Simulations related to new facility construction can be used to review new expansion supply plans and high-voltage distributed power connection technology.

Referring to Figures 26 and 27, the analysis tool can provide an input window related to adding new equipment, and can perform simulation based on settings values input from the user through the input window. For example, when a specific section is selected on a single-line diagram and settings for customer name, power, and distance are entered, the analysis tool selects 'new customer' as a single line based on the corresponding settings, as shown in Figure 27. It can be displayed by connecting to a specific section on the road and provide information on system characteristics according to the connection. That is, as shown in FIG. 27, simulation results related to tidal current analysis results can be provided. In the above description, the establishment of a new high-voltage customer was explained as an example, but simulations related to the establishment of new facilities may further include simulations related to the establishment of more diverse facilities (for example, the establishment of a new high-voltage distributed power source).

Additionally, in embodiments, the analysis tool may perform simulations related to distributed power fault current analysis. Simulation related to fault current analysis may be a simulation that calculates fault current by assuming a fault in an arbitrary facility. The analysis tool can perform simulations related to protection coordination. Simulations related to protection coordination may include simulations related to analysis of non-operation and malfunction of protection devices by distributed power sources. Non-operation of a protection device may mean that a failure has occurred but the protection device does not operate, and malfunction of a protection device may mean performing an unnecessary operation.

For example, in the case of analysis of protection device inoperability due to distributed power, it may be a simulation to calculate the fault current assuming a high-resistance ground fault at the end of the line and check whether the potential protection device closest to the fault point operates. . In addition, for example, in the case of analysis of protection device malfunction due to distributed power, a simulation is performed to calculate the fault current by assuming a failure in the protection device (power side or load side) and confirm whether the protection device operates by the distributed power supply on the load side. It can be. The specific description of the simulation method related to the above-described malfunction and non-operation is only an example, and the present invention is not limited thereto.

As described above, the server 100 can easily display a power network in which distributed power is connected through an analysis tool through a single-line diagram to improve user readability, and various simulation functions based on the single-line diagram. can be provided. In other words, through simulation using analysis tools, information related to various grid connection situations, including distributed power, can be provided, thereby improving user convenience.

The steps of the method or algorithm described in connection with embodiments of the present invention may be implemented directly in hardware, implemented as a software module executed by hardware, or a combination thereof. The software module may be RAM (Random Access Memory), ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), Flash Memory, hard disk, removable disk, CD-ROM, or It may reside on any type of computer-readable recording medium well known in the art to which the present invention pertains.

The components of the present invention may be implemented as a program (or application) and stored in a medium in order to be executed in conjunction with a hardware computer. Components of the invention may be implemented as software programming or software elements, and similarly, embodiments may include various algorithms implemented as combinations of data structures, processes, routines or other programming constructs, such as C, C++, , may be implemented in a programming or scripting language such as Java, assembler, etc. Functional aspects may be implemented as algorithms running on one or more processors.

Those skilled in the art will understand that various illustrative logical blocks, modules, processors, means, circuits and algorithm steps described in connection with the embodiments disclosed herein can be used in electronic hardware, (for convenience) It will be understood that the implementation may be implemented by various forms of program or design code (referred to herein as “software”) or a combination of both. To clearly illustrate this interoperability of hardware and software, various illustrative components, blocks, modules, circuits and steps have been described above generally with respect to their functionality. Whether this functionality is implemented as hardware or software depends on the specific application and design constraints imposed on the overall system. A person skilled in the art may implement the described functionality in various ways for each specific application, but such implementation decisions should not be construed as departing from the scope of the present invention.

The various embodiments presented herein may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term “article of manufacture” includes a computer program, carrier, or media accessible from any computer-readable device. For example, computer-readable media include magnetic storage devices (e.g., hard disks, floppy disks, magnetic strips, etc.), optical disks (e.g., CDs, DVDs, etc.), smart cards, and flash memory. Includes, but is not limited to, devices (e.g., EEPROM, cards, sticks, key drives, etc.). Additionally, various storage media presented herein include one or more devices and/or other machine-readable media for storing information. The term “machine-readable media” includes, but is not limited to, wireless channels and various other media capable of storing, retaining, and/or transmitting instruction(s) and/or data.

It is to be understood that the specific order or hierarchy of steps in the processes presented is an example of illustrative approaches. It is to be understood that the specific order or hierarchy of steps in processes may be rearranged within the scope of the present invention, based on design priorities. The appended method claims present elements of the various steps in a sample order but are not meant to be limited to the particular order or hierarchy presented.

The description of the presented embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention is not limited to the embodiments presented herein, but is to be construed in the broadest scope consistent with the principles and novel features presented herein.

Claims (11)

A method performed on one or more processors of a computing device, comprising:
Generating a system tree in the form of a vertical structure based on section information of the system diagram;
generating relative coordinate information based on the system tree;
generating absolute coordinate information based on the relative coordinate information; and
generating a single-line diagram based on the absolute coordinate information;
Including,
A method of generating a single-line diagram that provides convenience in calculating power demand and protection coordination standards in a power system including distributed power.
According to paragraph 1,
The section information of the above system diagram is,
Contains information related to connections between one or more nodes,
The step of generating the system tree is,
generating the system tree by setting a node related to a reference point as a top node and connecting one or more nodes according to hierarchical levels based on the top node;
Includes,
One or more nodes included in the system tree,
Containing a parent node related to a parent node and a child node related to a child node of the parent node,
A method of generating a single-line diagram that provides convenience in calculating power demand and protection coordination standards in a power system including distributed power.
According to paragraph 2,
The step of generating the system tree is,
Identifying whether a branch exists between connected nodes based on the section information; and
If the branch exists, creating one or more sibling nodes corresponding to the branch at the same level as the child node;
Including,
A method of generating a single-line diagram that provides convenience in calculating power demand and protection coordination standards in a power system including distributed power.
According to paragraph 1,
The step of generating the relative coordinate information is,
Setting the highest node of the system tree as the origin;
generating a horizontal reference line by sequentially positioning child nodes connected to the top node in a first horizontal direction; and
When a branch exists in each of the top node and the child nodes forming the horizontal baseline, sequentially connecting sibling nodes corresponding to the branch to the horizontal baseline;
Including,
A method of generating a single-line diagram that provides convenience in calculating power demand and protection coordination standards in a power system including distributed power.
According to paragraph 4,
The step of sequentially connecting the sibling nodes to the horizontal reference line is,
When a branch exists in the lower nodes corresponding to each of the sibling nodes, connecting the lower nodes in a direction perpendicular to the direction in which each of the sibling nodes progresses corresponding to the branch;
Including,
A method of generating a single-line diagram that provides convenience in calculating power demand and protection coordination standards in a power system including distributed power.
According to clause 4,
The step of generating the relative coordinate information is,
Sibling nodes connected to each of the upper nodes located upward with respect to the horizontal reference line are connected in an upward direction with respect to each of the upper nodes,
Sibling nodes connected to each of the lower nodes located in the lower direction with respect to the horizontal reference line are connected in the lower direction with respect to each of the lower nodes,
A method of generating a single-line diagram that provides convenience in calculating power demand and protection coordination standards in a power system including distributed power.
According to clause 4,
The step of generating the relative coordinate information is,
Identifying overlapping nodes related to whether two or more nodes overlap at the same coordinates;
When the overlapping node is identified, identifying the number of nodes connected to each of two or more nodes included in the overlapping node;
Comparing the number of nodes connected to each of the overlapping nodes and determining movement of at least one node based on the comparison result; and
When the at least one node is moved, moving subordinate nodes of the node related to the movement;
Including,
A method of generating a single-line diagram that provides convenience in calculating power demand and protection coordination standards in a power system including distributed power.
According to paragraph 4,
The step of generating the relative coordinate information is,
Identifying overlapping nodes related to whether two or more nodes overlap at the same coordinates;
When the overlapping node is identified, identifying coordinates corresponding to the starting point of each of two or more nodes included in the overlapping node;
Comparing identified coordinates corresponding to the starting points of each of the two or more nodes, and determining movement of at least one node based on the comparison result; and
When the at least one node is moved, moving subordinate nodes of the node related to the movement;
Includes,
The coordinates corresponding to the starting point are coordinates related to the starting point of the transit point located in the horizontal direction of each of the two or more nodes,
A method of generating a single-line diagram that provides convenience in calculating power demand and protection coordination standards in a power system including distributed power.
According to paragraph 1,
The step of generating the absolute coordinate information is,
Obtaining a first correction point based on the x-coordinate with the largest absolute value among the x-coordinates of each of the nodes located in a second horizontal direction with respect to the origin of the relative coordinate information;
Obtaining a second correction point based on the y-coordinate with the largest absolute value among the y-coordinates of each node located upward with respect to the origin of the relative coordinate information; and
generating the absolute coordinate information by performing coordinate transformation on the relative coordinate information based on the first correction point and the second correction point;
Including,
A method of generating a single-line diagram that provides convenience in calculating power demand and protection coordination standards in a power system including distributed power.
A memory that stores one or more instructions; and
a processor executing one or more instructions stored in the memory;
Including,
The processor executes the one or more instructions,
A computing device that performs the method of claim 1.
A computer program combined with a computer as hardware and stored in a computer-readable recording medium so as to perform the method of claim 1.