Power distribution network topology simplification and single line diagram automatic generation method and system, and medium

Abstract

The invention relates to a power distribution network topology simplification and single line diagram automatic generation method and system, and a medium. The method comprises the following steps: analyzing a distribution network line CIM model file; generating simplified equipment information; determining a connection relationship between the topological structure of the power distribution network and the equipment; determining a trunk line; searching a transformer connected with each connection node on the main line, determining branch lines, and combining the branch lines; simplifying in-station equipment of a switching station, a ring main unit, a box-type substation and a power distribution station, and generating a simplified connection relation; calculating line segment information, including circuit breakers / load switches on a main line, segment capacity and branch capacity, so that dispatchers can quickly know the running state of the power distribution network; according to the power distribution network single line diagram generation method and device, the simplified power distribution network line single line diagram is automatically generated, and a foundation is laid for intelligent management of the power distribution network, rapid fault positioning, efficient access of new energy and optimized operation.

Description

Technical Field

[0001] The present application relates to the technical field of automatic generation of distribution network single-line diagrams, and in particular to a method, system, and medium for simplifying distribution network topology and automatically generating single-line diagrams. Background Art

[0002] Distribution network equipment and topology information is typically stored in a homologous system as CIM model files. Wiring algorithms are then used to map the equipment and lines, resulting in a distribution network wiring diagram. This wiring diagram is a crucial reference for grid operation and maintenance. By displaying equipment using standardized symbols, maintenance personnel can intuitively understand the distribution network topology. However, with the continuous expansion of electricity consumption, distribution network structures are becoming increasingly complex. The presence of numerous disconnectors, fuses, and towers results in cluttered wiring diagrams. To simplify wiring diagrams, it is often necessary to simplify line equipment, leaving only key equipment such as circuit breakers and transformers. This is then drawn as a single-line diagram, automatically counting key line switches, the number of connected users, and the capacity. However, due to the inherent complexity of the lines and the large number of connected devices, existing homologous system line single-line diagrams lack intuitiveness and are difficult for personnel to understand. Furthermore, manual counting of key line switches, the number of connected users, and the capacity is required. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide a method, system and medium for simplifying the distribution network topology and automatically generating a single-line diagram. By parsing the CIM file and extracting the distribution network topology structure and key operating equipment, the complex power grid topology relationship can be accurately grasped to generate a simplified distribution network single-line diagram and output key line information, thereby guiding the efficient implementation of distribution network operation and maintenance production work and strongly supporting the rapid development of distribution network digitalization.

[0004] To achieve the above objectives, this application provides the following technical solutions:

[0005] In a first aspect, an embodiment of the present application provides a method for simplifying distribution network topology and automatically generating a single-line diagram, the method comprising the following steps:

[0006] Parse the distribution network line CIM model file and extract the device and connection relationship information in the model file;

[0007] Based on the equipment and connection relationship information in the model file, the circuit breaker, load switch, and transformer information are extracted, and the conductors and disconnector devices are merged and simplified to generate simplified equipment information;

[0008] Use the simplified device information to construct an undirected graph to determine the distribution network topology and the connection relationship between devices;

[0009] Determine the trunk line based on the connection relationship between the substation feeder outgoing line and the tie switch in the distribution network topology and the connection relationship between the equipment;

[0010] Find the transformer connected to each connection node on the main line, determine the branch lines, and merge the branch lines;

[0011] Simplify the equipment in switch stations, ring network cabinets, box-type substations, and distribution stations, and generate simplified connection relationships;

[0012] Calculate line segment information, including main line circuit breakers / load switches, segment capacity, and branch capacity;

[0013] Draw the distribution network single-line diagram based on the simplified equipment information and connection relationships.

[0014] The device and connection relationship information in the model file is used to extract the circuit breaker, load switch, and transformer information, merge and simplify the conductors and disconnector devices, and generate simplified device information. The steps are as follows:

[0015] Equipment information in the CIM file is classified. Circuit breakers and load switches are key operating equipment in distribution network scheduling, while transformers are user information. These two types of equipment information are retained. Switchyards, ring main units, box-type substations, and distribution stations are retained as equipment station information. Non-operable equipment such as conductors, disconnectors, and fuses are simplified.

[0016] When merging devices, if two line devices are directly connected and there is no other device at the connection point, the two line devices will be merged. If both connection points of a line device are connected to two or more other switchgear, transformers, or line devices, the line device will be retained separately.

[0017] If the line device is connected to a switch device or a transformer, merge the line device to the corresponding port of the switch device or transformer and update the connection relationship.

[0018] The simplified device information is used to construct an undirected graph to determine the distribution network topology and the connection relationship between devices, specifically:

[0019] According to the undirected graph construction principle, the connection nodes between devices are regarded as points and the devices are regarded as edges to construct an undirected graph of the topological structure of distribution network equipment.

[0020] Determining the trunk line according to the connection relationship between the substation feeder outgoing line and the tie switch in the distribution network topology and the connection relationship between the devices is specifically divided into the following steps:

[0021] Find the switchgear on the outgoing feeder line of the substation, use the switchgear as the starting device of the main line, and the connection node corresponding to the switchgear as the starting point of the main line search;

[0022] Determine the terminal switch device of the main line according to the tie switch list, and use the connection node of the tie switch as the end point of the main line search;

[0023] In the undirected graph of the distribution network equipment topology structure, a depth-first search algorithm is used to find the connection path between the starting device and each end device. The obtained connection path is used as the main line. If the number of tie switches is greater than 1, the same paths in multiple main lines are merged.

[0024] The method of finding the transformer connected to each connection node on the main line, determining the branch line, and merging the branch lines is specifically divided into the following steps:

[0025] Remove the edge where the main line is located from the undirected graph to form a branch undirected graph;

[0026] Taking each connection node of the main line as the starting point, find the transformer connected to the node in the branch line undirected graph as the branch load of the node;

[0027] Merge the branch load paths of the same main line node to restore the distribution network topology.

[0028] The simplification of the equipment in the switch station, ring network cabinet, box-type substation, and distribution station to generate the simplified connection relationship is specifically divided into the following steps:

[0029] For each switchgear, transformer, and line equipment, determine its affiliation. If it belongs to a switch station, ring main unit, box-type substation, or distribution station, mark the equipment as an internal device of the corresponding station equipment.

[0030] For a station device, the connection nodes of all its subordinate devices are regarded as station device connection nodes. If a node is connected to two or more subordinate devices, the node is an internal node, otherwise it is an external node. All internal nodes are merged into a virtual internal connection node.

[0031] The calculation of line segment information, including main line circuit breakers / load switches, segment capacity, and branch capacity, is specifically divided into the following steps:

[0032] For the switchgear on the main line, if the switchgear does not belong to the station equipment, the two adjacent switchgears are directly regarded as the line load segment, and all transformers connected in the load segment belong to the segment load;

[0033] For station equipment on the main line, all transformers connected to its internal nodes are considered station loads;

[0034] For each branch line, the first switchgear on the branch line is the branch switchgear, and all transformers connected from the branch switchgear to the end of the line are the branch loads corresponding to the branch switchgear.

[0035] In the second aspect, an embodiment of the present application provides a distribution network topology simplification and single-line diagram automatic generation system, including a memory and a processor, wherein the memory includes a program of a distribution network topology simplification and single-line diagram automatic generation method, and the above steps are implemented when the program of the distribution network topology simplification and single-line diagram automatic generation method is executed by the processor.

[0036] In a third aspect, an embodiment of the present application provides a computer-readable storage medium, which stores program code. When the program code is executed by a processor, the steps of the distribution network topology simplification and single-line diagram automatic generation method as described above are implemented.

[0037] In a fourth aspect, an embodiment of the present application provides an electronic device, including:

[0038] Memory for storing computer programs;

[0039] The processor is configured to execute the steps of the method for simplifying the distribution network topology and automatically generating a single-line diagram as described above when executing the computer program stored in the memory.

[0040] Compared with the existing technology, the beneficial effects of the present invention are: it can effectively simplify distribution network equipment, generate a clear and concise distribution network single-line diagram, effectively improve the efficiency of the operation and maintenance team in generating and updating the single-line diagram, and provide a reference for the distribution network operation and scheduling work. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 This is the overall process of a method for simplifying distribution network topology and automatically generating a single-line diagram provided by an embodiment of the present invention.

[0043] Figure 2 It is a single-line diagram of a homologous system of an actual distribution network line.

[0044] Figure 3 This is a simplified single-line diagram of a distribution network provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0046] The terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0047] The terms "first," "second," etc. are only used to distinguish one entity or operation from another entity or operation, and are not to be understood as indicating or implying relative importance, nor are they to be understood as requiring or implying any actual relationship or order between these entities or operations.

[0048] This embodiment is achieved through the following technical solutions: a method for simplifying the distribution network topology and automatically generating a single-line diagram, the main implementation process is as shown in the attached Figure 1 As shown, the following steps are included:

[0049] S1. Parse the distribution network line CIM model file and extract key information such as the device and connection relationship in the model file;

[0050] S2. Extract key information such as circuit breakers, load switches, and transformers, merge and simplify equipment such as conductors and disconnectors, and generate simplified equipment information;

[0051] S2.1. Classify device information. Circuit breakers and load switches are considered switchgear, and transformers are considered user terminals. Each device exists independently. Non-operable devices such as conductors, disconnectors, and fuses are combined and operated as line devices. Disconnectors and fuses are treated as zero-length conductors.

[0052] S2.2. Start the search from any device with only one terminal. The connection node corresponding to the terminal of the device is used as the starting point. The connection devices are divided into the following four cases: 1) If the number of devices connected to the connection node is 1, skip the node; 2) If the number of devices connected to the node is 2, and the next device connected is a line device, merge the next device into the current device, and use the other terminal of the next device as the new terminal after the merger of the current device, and use the connection node as the new starting node; 3) If the number of devices connected to the node is 2, and the next device connected is a switch device or transformer, end the current device search; 3) If the number of devices connected to the node is greater than 2, end the current device search;

[0053] S2.3. Repeat S2.2 until all devices are traversed;

[0054] S2.4. Match the simplified connection terminals with each device to generate simplified device information;

[0055] S3. Use the simplified device information to construct an undirected graph to determine the distribution network topology and the connection relationship between devices;

[0056] S3.1. Build an undirected graph G by treating all connected nodes as nodes and devices as edges.

[0057] S4. Determine the main line based on the connection relationship between the substation feeder outgoing line and the tie switch;

[0058] S4.1. The distribution network is usually a tree structure. Therefore, in this embodiment, starting from the substation, the substation feeder outgoing line in the CIM file is determined. The switch corresponding to the feeder is the main line starting device, and the corresponding connection node is the main line starting node;

[0059] S4.2. In this embodiment, first, information about all tie switches in a certain area is obtained. The tie switches included in the distribution network are determined based on the feeders in the current CIM file. The connection path from the substation outgoing line switch to the tie switch is considered the main line, and the tie switch is the terminal device of the main line.

[0060] S4.3. In this embodiment, based on the undirected graph G obtained after device simplification, a depth-first algorithm is used to search for connectivity paths from the starting device to the end device. All devices passing through are considered mainline devices, and the connecting nodes are considered mainline nodes. If multiple paths exist between the starting switch and the same end device, the longest path is selected as the mainline.

[0061] S5. Find the transformer connected to each connection node on the main line, determine the branch lines, and merge the branch lines;

[0062] S5.1. Remove the edges corresponding to the main line equipment from the undirected graph G to construct a branch undirected graph G';

[0063] S5.2. Starting from any connection node on the main line, use a depth-first search algorithm to search for a transformer connected to the connection node on the main line in the branch undirected graph G'. If a connection path exists, it is used as the branch load of the connection node;

[0064] S5.3. Merge branches on the same connection node, with the longest path as the main branch. The first switch on the main branch is the branch switch. Merge other branches with the main branch in sequence. If there is only one transformer at the end of the switch on the branch, and no other switch between the transformer and the switch, define that device as the user boundary switch.

[0065] S5.4. Repeat step S5.3 until all branches on the node are merged;

[0066] S5.5. Repeat steps S5.2, S5.3, and S5.4 until all branches are processed;

[0067] S6. Simplify the equipment in the switch station, ring main unit, box-type substation, and distribution station, and generate simplified connection relationships;

[0068] S6.1. For each switchgear, transformer, and line device, determine its subordinate relationship and define a station house list ZF_list. If the device belongs to a station house, mark the device and record the connection node of the device in the station house as a station house connection node.

[0069] S6.2. For each connection node in the station building, if all devices connected to the node belong to the station building, the node is considered an internal virtual node of the station building; if the device connected to the node is not in the station building, the connection node is considered an external node;

[0070] S6.3. Determine the location of the station building with the virtual node as the center of the station building, and connect it to other devices through the external nodes of the station building to establish a connection relationship;

[0071] S7. Calculate line segment information, including "circuit breaker / load switch - circuit breaker, load switch" on the main line, segment capacity, branch capacity, etc.

[0072] S7.1. For switchgear on the main line, starting from the starting device, if two consecutive switchgears do not belong to any station building, the conductors, connecting nodes, and branches between the two switchgears together constitute a line segment. The total capacity of the transformers connected in this line segment is calculated to facilitate the dispatcher to understand the line load situation.

[0073] S7.2. For station buildings on the main line, calculate the capacity of all internal transformers in the station building as the station building load capacity;

[0074] S7.3. For branch lines, calculate the total capacity of the transformers connected to all nodes from the branch switch to the end of the distribution network line as the total capacity of the branch, which is controlled by the branch switch. Among them, branches that meet any of the following three conditions are large branches, and the rest are small branches: 1) the total capacity of the branch exceeds 5000kVA; 2) the total length of the branch line exceeds 2km; 3) the number of transformers is greater than 5;

[0075] S8. Draw a single-line diagram of the distribution network based on the simplified equipment information and connection relationships;

[0076] S8.1. Starting from the starting device, draw the devices on the main lines and branch lines in sequence, with the longest main line as the horizontal distribution. The remaining main lines are extended from the first main line to both sides. If the device is internal to the station building, only the station building is drawn, and all internal nodes of the station building share the same virtual node position. Switchgear and conductors are not drawn separately.

[0077] S8.2. When drawing, use the recursive data model to determine the node position. When two components overlap, extend the tree branch where the current original component is located in the vertical direction of the current direction to ensure the beauty of the drawing result. The drawing result is as shown in the attached figure. Figure 3 shown.

[0078] An embodiment of the present application provides a distribution network topology simplification and single-line diagram automatic generation system, including a memory and a processor, wherein the memory includes a program of a distribution network topology simplification and single-line diagram automatic generation method, and when the program of the distribution network topology simplification and single-line diagram automatic generation method is executed by the processor, the steps of the distribution network topology simplification and single-line diagram automatic generation method as described above are implemented.

[0079] An embodiment of the present application provides a computer-readable storage medium storing program code. When the program code is executed by a processor, the steps of the method for simplifying the distribution network topology and automatically generating a single-line diagram are implemented as described above.

[0080] An embodiment of the present application provides an electronic device, comprising: a memory for storing a computer program;

[0081] The processor is configured to execute the steps of the method for simplifying the distribution network topology and automatically generating a single-line diagram as described above when executing the computer program stored in the memory.

[0082] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0083] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0084] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0085] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0086] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0087] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0088] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can be implemented using any method or technology to store information. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase-change RAM (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory computer-readable media such as modulated data signals and carrier waves.

[0089] The above description is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A method for simplifying distribution network topology and automatically generating a single-line diagram, characterized in that: The method comprises the following steps: Parse the distribution network line CIM model file and extract the device and connection relationship information in the model file; Based on the equipment and connection relationship information in the model file, the circuit breaker, load switch, and transformer information are extracted, and the conductors and disconnector devices are merged and simplified to generate simplified equipment information; Use the simplified device information to construct an undirected graph to determine the distribution network topology and the connection relationship between devices; Determine the trunk line based on the connection relationship between the substation feeder outgoing line and the tie switch in the distribution network topology and the connection relationship between the equipment; Find the transformer connected to each connection node on the main line, determine the branch lines, and merge the branch lines; Simplify the equipment in switch stations, ring network cabinets, box-type substations, and distribution stations, and generate simplified connection relationships; Calculate line segment information, including main line circuit breakers / load switches, segment capacity, and branch capacity; Draw the distribution network single-line diagram based on the simplified equipment information and connection relationships.

2. A method for simplifying distribution network topology and automatically generating a single-line diagram according to claim 1, characterized in that: The device and connection relationship information in the model file is used to extract the circuit breaker, load switch, and transformer information, merge and simplify the conductors and disconnector devices, and generate simplified device information. The steps are as follows: Equipment information in the CIM file is classified. Circuit breakers and load switches are key operating equipment in distribution network scheduling, while transformers are user information. These two types of equipment information are retained. Switchyards, ring main units, box-type substations, and distribution stations are retained as equipment station information. Non-operable equipment such as conductors, disconnectors, and fuses are simplified. When merging devices, if two line devices are directly connected and there is no other device at the connection point, the two line devices will be merged. If both connection points of a line device are connected to two or more other switchgear, transformers, or line devices, the line device will be retained separately. If the line device is connected to a switch device or a transformer, merge the line device to the corresponding port of the switch device or transformer and update the connection relationship.

3. The method for simplifying distribution network topology and automatically generating a single-line diagram according to claim 1, characterized in that: The simplified device information is used to construct an undirected graph to determine the distribution network topology and the connection relationship between devices, specifically: According to the undirected graph construction principle, the connection nodes between devices are regarded as points and the devices are regarded as edges to construct an undirected graph of the topological structure of distribution network equipment.

4. The method for simplifying distribution network topology and automatically generating a single-line diagram according to claim 1, characterized in that: Determining the trunk line according to the connection relationship between the substation feeder outgoing line and the tie switch in the distribution network topology and the connection relationship between the devices is specifically divided into the following steps: Find the switchgear on the outgoing feeder line of the substation, use the switchgear as the starting device of the main line, and the connection node corresponding to the switchgear as the starting point of the main line search; Determine the terminal switch device of the main line according to the tie switch list, and use the connection node of the tie switch as the end point of the main line search; In the undirected graph of the distribution network equipment topology structure, a depth-first search algorithm is used to find the connection path between the starting device and each end device. The obtained connection path is used as the main line. If the number of tie switches is greater than 1, the same paths in multiple main lines are merged.

5. The method for simplifying distribution network topology and automatically generating single-line diagram according to claim 1, characterized in that: The method of finding the transformer connected to each connection node on the main line, determining the branch line, and merging the branch lines is specifically divided into the following steps: Remove the edge where the main line is located from the undirected graph to form a branch undirected graph; Taking each connection node of the main line as the starting point, find the transformer connected to the node in the branch line undirected graph as the branch load of the node; Merge the branch load paths of the same main line node to restore the distribution network topology.

6. The method for simplifying distribution network topology and automatically generating a single-line diagram according to claim 1, characterized in that: The simplification of the equipment in the switch station, ring network cabinet, box-type substation, and distribution station to generate the simplified connection relationship is specifically divided into the following steps: For each switchgear, transformer, and line equipment, determine its affiliation. If it belongs to a switch station, ring main unit, box-type substation, or distribution station, mark the equipment as an internal device of the corresponding station equipment. For a station device, the connection nodes of all its subordinate devices are regarded as station device connection nodes. If a node is connected to two or more subordinate devices, the node is an internal node, otherwise it is an external node. All internal nodes are merged into a virtual internal connection node.

7. The method for simplifying distribution network topology and automatically generating a single-line diagram according to claim 1, characterized in that: The calculation of line segment information, including main line circuit breakers / load switches, segment capacity, and branch capacity, is specifically divided into the following steps: For the switchgear on the main line, if the switchgear does not belong to the station equipment, the two adjacent switchgears are directly regarded as the line load segment, and all transformers connected in the load segment belong to the segment load; For station equipment on the main line, all transformers connected to its internal nodes are considered station loads; For each branch line, the first switchgear on the branch line is the branch switchgear, and all transformers connected from the branch switchgear to the end of the line are the branch loads corresponding to the branch switchgear.

8. A distribution network topology simplification and single-line diagram automatic generation system, characterized in that: The method comprises a memory and a processor, wherein the memory comprises a program for a method for simplifying the topology of a distribution network and automatically generating a single-line diagram, and when the program for the method for simplifying the topology of a distribution network and automatically generating a single-line diagram is executed by the processor, the following steps are implemented: Parse the distribution network line CIM model file and extract the device and connection relationship information in the model file; Based on the equipment and connection relationship information in the model file, the circuit breaker, load switch, and transformer information are extracted, and the conductors and disconnector devices are merged and simplified to generate simplified equipment information; Use the simplified device information to construct an undirected graph to determine the distribution network topology and the connection relationship between devices; Determine the trunk line based on the connection relationship between the substation feeder outgoing line and the tie switch in the distribution network topology and the connection relationship between the equipment; Find the transformer connected to each connection node on the main line, determine the branch lines, and merge the branch lines; Simplify the equipment in switch stations, ring network cabinets, box-type substations, and distribution stations, and generate simplified connection relationships; Calculate line segment information, including main line circuit breakers / load switches, segment capacity, and branch capacity, so that dispatchers can quickly understand the operating status of the distribution network; Draw the distribution network single-line diagram based on the simplified equipment information and connection relationships.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores program code, and when the program code is executed by a processor, the steps of the method for simplification of distribution network topology and automatic generation of single-line diagrams according to any one of claims 1 to 7 are implemented.

10. An electronic device, characterized in that: include: Memory for storing computer programs; The processor is configured to execute the steps of the method for simplification of distribution network topology and automatic generation of single-line diagrams according to any one of claims 1 to 7 when executing the computer program stored in the memory.

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