Power distribution network maintenance temporary jump simulation analysis method, device, equipment and medium

Abstract

The application relates to the technical field of power distribution automation, and discloses a power distribution network maintenance temporary jump simulation analysis method, device, equipment and medium, which are used for automatically determining optimal temporary jump points, performing temporary jump simulation, visually presenting temporary jump line operation data, improving maintenance work efficiency, avoiding misoperation, and reducing safety hazards. The power distribution network maintenance temporary jump simulation analysis method comprises the following steps: acquiring a power supply point set in an influence range of a target to-be-maintained line and real-time monitoring data of each block on the target to-be-maintained line; determining an optimal temporary jump point pair corresponding to each temporary power supply block according to the real-time monitoring data of each block and the power supply point set; performing temporary jump simulation analysis according to the optimal temporary jump point pair corresponding to each temporary power supply block, so as to obtain temporary jump line operation data; and generating a visual interface according to the temporary jump line operation data.

Description

Technical Field

[0001] This invention relates to the field of power distribution automation technology, and in particular to a method, device, equipment and medium for simulation analysis of temporary jump connections during power distribution network maintenance. Background Technology

[0002] As a crucial component of the power grid, the distribution network directly serves electricity users and is closely intertwined with the daily lives and production of the general public. It is a vital infrastructure for ensuring and improving people's livelihoods and represents the most direct indicator of users' perception and experience of power grid services. In recent years, regional and urban electricity loads have increased, while the construction of new power lines has been severely hampered. Scheduling power outages for maintenance on power lines has always been a challenge for regional and urban backbone power networks. Incomplete transmission networks in adjacent areas prevent the effective transfer of power loads, especially during periods of low temperatures and heavy loads in winter, which places immense pressure on the normal operation of these lines.

[0003] During temporary power outages and maintenance of distribution automation systems, especially when distributed energy storage in the transformer substation is insufficient, temporary power supply from other power sources is needed to ensure continued operation of equipment during line maintenance. However, manually selecting temporary jumper points has limitations. It cannot fully assess the actual conditions of the downstream transformer substations, such as required load and load rate, leading to problems like poor point selection, time-consuming and labor-intensive processes, and low efficiency. Furthermore, it cannot estimate the line status after the temporary jumper connection; the real-time line operation is only displayed by sending remote signaling data from the terminal equipment after the actual temporary jumper operation, which is prone to errors and safety hazards. Summary of the Invention

[0004] This invention provides a method, device, equipment, and medium for simulating and analyzing temporary jumpers during power distribution network maintenance. It avoids the problems caused by manually selecting temporary jumper points, which cannot fully assess the needs of downstream transformer areas and result in poorly selected temporary jumper points. Furthermore, it avoids the inability to determine the operating status of the line after the temporary jumper operation before the operation, which can easily lead to misoperation and safety hazards.

[0005] The first aspect of this invention provides a simulation analysis method for temporary jump connections during distribution network maintenance, comprising: acquiring a set of power supply points within the influence range of a target line under maintenance and real-time monitoring data of each transformer substation on the target line under maintenance; determining the optimal temporary jump connection point pair corresponding to each temporary power supply substation based on the real-time monitoring data of each substation and the set of power supply points; performing temporary jump connection simulation analysis based on the optimal temporary jump connection point pair corresponding to each temporary power supply substation to obtain temporary jump connection line operation data; and generating a visualization interface based on the temporary jump connection line operation data.

[0006] A second aspect of the present invention provides a simulation analysis device for temporary jump connections during distribution network maintenance, comprising: an acquisition module for acquiring a set of power supply points within the influence range of a target line under maintenance and real-time monitoring data of each transformer substation on the target line under maintenance; a processing module for determining the optimal temporary jump connection pair corresponding to each temporary power supply substation based on the real-time monitoring data of each substation and the set of power supply points; an analysis module for performing temporary jump connection simulation analysis based on the optimal temporary jump connection pair corresponding to each temporary power supply substation to obtain temporary jump connection line operation data; and a visualization module for generating a visualization interface based on the temporary jump connection line operation data.

[0007] A third aspect of the present invention provides a temporary jumper simulation analysis device, comprising: a memory and at least one processor, wherein the memory stores instructions; the at least one processor invokes the instructions in the memory to cause the temporary jumper simulation analysis device to execute the above-described distribution network maintenance temporary jumper simulation analysis method.

[0008] A fourth aspect of the present invention provides a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the above-described simulation analysis method for temporary jump-connection during power distribution network maintenance.

[0009] In this embodiment of the invention, the optimal temporary jumper point is determined automatically and accurately, improving maintenance efficiency, reducing misoperation, and mitigating safety hazards. Simulation analysis predicts line operation and generates a real-time visual interface, allowing staff to intuitively understand the line status, reducing the possibility of misoperation, further lowering safety hazards, and significantly improving the accuracy and reliability of maintenance work. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of an embodiment of the simulation analysis method for temporary jumper connections during power distribution network maintenance in this invention.

[0011] Figure 2 This is a schematic diagram of another embodiment of the simulation analysis method for temporary jumper connections during power distribution network maintenance in this invention.

[0012] Figure 3 This is a schematic diagram of an embodiment of the simulation analysis device for temporary jump connections during power distribution network maintenance in this invention.

[0013] Figure 4 This is a schematic diagram of another embodiment of the power distribution network maintenance temporary jumper simulation analysis device in this invention.

[0014] Figure 5 This is a schematic diagram of one embodiment of the temporary jumper simulation analysis device in this invention. Detailed Implementation

[0015] This invention provides a method, device, equipment, and medium for simulating and analyzing temporary jump connections during power distribution network maintenance. It is used to automatically determine the optimal temporary jump connection point, perform temporary jump connection simulation, and visualize the operation data of the temporary jump connection line, thereby improving maintenance efficiency, avoiding misoperation, and reducing safety hazards.

[0016] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” or “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0017] For ease of understanding, the specific process of the embodiments of the present invention is described below. Please refer to [link / reference]. Figure 1 One embodiment of the simulation analysis method for temporary patch connections during power distribution network maintenance in this invention includes:

[0018] 101. Obtain the set of power supply points within the influence range of the target line under maintenance and the real-time monitoring data of each transformer substation on the target line under maintenance.

[0019] It is understood that the executing entity of this invention can be a power distribution network maintenance temporary jumper simulation analysis device, a power distribution automation system, a terminal, or a server; the specific implementation is not limited here. This embodiment of the invention will be illustrated using a power distribution automation system as the executing entity.

[0020] The power distribution automation system of this embodiment includes a memory, a processor, and a display. The memory stores instructions, and the processor calls the instructions in the memory to enable the temporary jump connection simulation analysis device to execute the power distribution network maintenance temporary jump connection simulation analysis method of this embodiment. The display is used to show a visualization interface generated based on the temporary jump connection line operation data.

[0021] Before acquiring the set of power supply points within the influence range of the target line under maintenance and the real-time monitoring data of each transformer area on the target line under maintenance, the distribution automation system determines the real-time feeder cross-section of the current feeder diagram as a temporary feeder cross-section; on the temporary feeder cross-section, it identifies the target line under maintenance and creates a temporary jumper task.

[0022] In this embodiment, the real-time monitoring data of each transformer area can be obtained through the monitoring service of the distribution automation system. The distribution automation system monitors the real-time data sent by distribution terminals such as feeder terminal units (FTU), smart converging units (SCU), and transformer terminal units (TTU) in each transformer area and stores it in a record table for the distribution automation system to comprehensively evaluate the temporary jump-connection task.

[0023] In this embodiment, the real-time monitoring data for each transformer area includes at least the power load within the transformer area and the equipment information of each transformer area. It may also include data such as the distributed energy storage status within the transformer area, the rated current of each transformer area, and the geographical location information of the transformer area.

[0024] The power point set in this embodiment includes at least one power point corresponding to each transformer substation. That is, the power point set is a set composed of each power point corresponding to multiple transformer substations. The power point set includes multiple power points and information about each power point. The power points are used to supply power to the transformer substations during maintenance. One power point can supply power to one or more temporary power supply transformer substations. The information about each power point includes power point equipment information, power point energy information, power point geographical location information, etc., such as power point switching equipment, equipment rated current, and remaining power of the switching equipment.

[0025] 102. Determine the optimal temporary jumper pair for each temporary power supply area based on the real-time monitoring data and power point set of each transformer substation.

[0026] Specifically, based on real-time monitoring data of each transformer substation, at least one temporary power supply substation within the affected area of ​​the target line under maintenance is identified. Power point matching is performed on the power supply point set based on the power demand of each temporary power supply substation during maintenance, resulting in a target temporary power supply point for each substation. The remaining power of the target temporary power supply point is greater than the power required by the substation during maintenance. Power point switching equipment is screened from the target temporary power supply points based on the rated current of each substation, resulting in target power point switching equipment for each substation. The rated current of the target power point switching equipment is greater than the rated current of the substation. The target power point switching equipment and the substation transformer switching equipment for each temporary power supply substation are then determined as the optimal temporary jumper pair for each temporary power supply substation.

[0027] In this embodiment, the temporary power supply area is used to indicate the area within the substation where the distributed energy storage is insufficient to meet the required load of the substation during maintenance. That is, the temporary power supply area needs to be connected to a temporary power point through jumpers to ensure the normal power demand within the substation. There may be one or more temporary power supply areas within the scope of the maintenance of the target line under maintenance. The temporary jumper task in this embodiment needs to perform temporary jumper simulation analysis on all temporary power supply areas within the scope of the maintenance of the target line under maintenance.

[0028] In this embodiment, the optimal temporary jumper point pair corresponding to each temporary power supply area includes two switching devices, namely the target power point switching device corresponding to the temporary power supply area and the distribution transformer switching device within the temporary power supply area.

[0029] Optionally, if any temporary power supply area is matched with multiple power sources, meaning there are multiple power sources with remaining power sufficient to meet the power demand during the area's maintenance, the nearest power source to the temporary power supply area can be selected based on geographical location information as the target temporary power source for that area. This avoids unnecessary losses caused by excessively long jumper lines. Alternatively, the power source with the lowest line load rate can be selected as the target temporary power source for that area to improve power supply reliability.

[0030] Optionally, determine the target temporary power supply point corresponding to each temporary power supply area, and use a breadth-first search algorithm to topologically traverse all devices within the power supply range of the target temporary power supply point, select the switchgear whose rated current is greater than the rated current required by the area and is the closest, and obtain the target power supply point switchgear corresponding to each temporary power supply area.

[0031] Understandably, if the remaining power of a temporary power supply point meets the power demand during the maintenance period of a transformer substation, one temporary power supply point can supply power to one or more temporary power supply substations. That is, the remaining power of the temporary power supply point meets the power demand of all the temporary power supply substations it needs to supply during the maintenance period. It can be selected to supply power to multiple temporary power supply substations to reduce dependence on multiple independent power supply points and reduce the complexity and maintenance cost of the overall system. Under appropriate circumstances, a temporary power supply substation can also be supplied by one or more temporary power supply points. In order to reduce the number of temporary jumpers and the complexity and maintenance cost of the overall system, this embodiment uses the example of a temporary power supply substation being supplied by one temporary power supply point for explanation.

[0032] 103. Perform temporary jumper simulation analysis based on the optimal temporary jumper point corresponding to each temporary power supply area to obtain temporary jumper line operation data.

[0033] The temporary jumper line operation data in this embodiment includes the temporary jumper line operation status of each temporary power supply area, which can determine the line status after the temporary jumper operation is performed. The temporary jumper line operation data can include one or more simulation situations among the energized status of each device terminal, the set of devices within the power supply range, and the set of upstream and downstream devices.

[0034] Optionally, temporary jumper simulation analysis is performed based on the optimal temporary jumper point pairs corresponding to each temporary power supply area to obtain temporary jumper line operation data, including: connecting the optimal temporary jumper point pairs corresponding to each temporary power supply area to obtain a temporary wiring diagram; performing temporary jumper topology analysis on the temporary wiring diagram to determine the energized state of each equipment terminal to obtain temporary jumper line operation data.

[0035] Specifically, the temporary jumper topology analysis of the temporary wiring diagram is performed to determine the energized state of each device terminal, and the temporary jumper line operation data is obtained by: traversing each connection point in the temporary wiring diagram, determining the electrical island corresponding to each connection point, and setting the energized state of each device terminal in the connection point within the island according to the energized state corresponding to the target electrical island, wherein each connection point includes at least two device terminals.

[0036] Optionally, temporary jumper simulation analysis is performed based on the optimal temporary jumper point pairs corresponding to each temporary power supply area to obtain temporary jumper line operation data, including: connecting the optimal temporary jumper point pairs corresponding to each temporary power supply area to obtain a temporary wiring diagram; performing power supply range topology analysis on the temporary wiring diagram to determine the set of equipment within the power supply range, and obtaining temporary jumper line operation data.

[0037] Specifically, the power supply range topology analysis of the temporary wiring diagram is performed to determine the set of equipment within the power supply range, and the temporary jumper line operation data is obtained by: traversing each connection point in the temporary wiring diagram and determining the electrical island corresponding to each connection point; if it is a live island, then obtaining each connection point within the live island; determining each device terminal corresponding to each connection point within the island, and constructing the set of equipment within the power supply range based on the equipment to which each device terminal belongs.

[0038] Optionally, temporary jumper simulation analysis is performed based on the optimal temporary jumper point pairs corresponding to each temporary power supply area to obtain temporary jumper line operation data, including: connecting the optimal temporary jumper point pairs corresponding to each temporary power supply area to obtain a temporary wiring diagram; performing power traceability topology analysis on the temporary wiring diagram to determine the upstream and downstream equipment sets, and obtaining temporary jumper line operation data.

[0039] Specifically, a power tracing topology analysis is performed on the temporary wiring diagram to determine the upstream and downstream equipment sets, obtaining the temporary jumper line operation data, including: selecting any two devices as the starting and ending devices in the temporary wiring diagram; starting from the starting device, a search is performed, with the tripping device as the boundary, to obtain the target path from the starting device to the power supply point, and each switch on the target path is marked as an upstream device, obtaining the upstream equipment set; starting from the ending device, a search is performed, with the tripping device and the starting device as the boundary; if the searched switch contains a temporary jumper, the device on the other side of the jumper is obtained and the switch is marked as a downstream device; if the searched switch does not contain a temporary jumper, the device on the other side of the connection point is obtained and the switch is marked as a downstream device; thus obtaining the downstream equipment set.

[0040] 104. Generate a visualization interface based on the operation data of temporary jumper lines.

[0041] This embodiment uses dynamic topology coloring based on the temporary jumper line operation data to visually present the simulation analysis results of the temporary jumper line operation mode.

[0042] In this embodiment of the invention, by monitoring data and power supply point sets in real time, the load demand of downstream transformer areas is comprehensively assessed, and the optimal temporary jumper point is automatically and accurately determined, improving maintenance efficiency, avoiding the time-consuming and labor-intensive nature of manual point selection and the risk of potential misoperation, and reducing safety hazards. Simulation analysis predicts line operation and generates a real-time visual interface to intuitively display the line status, assisting staff in making accurate judgments and operations, reducing safety hazards, improving power supply reliability, and providing strong decision support for power grid dispatching.

[0043] Please see Figure 2 Another embodiment of the simulation analysis method for temporary jumpers during power distribution network maintenance in this invention includes:

[0044] 201. Obtain the set of power supply points within the influence range of the target line under maintenance and the real-time monitoring data of each transformer substation on the target line under maintenance.

[0045] Step 201 can be performed by referring to step 101, and will not be repeated here.

[0046] 202. Based on the real-time monitoring data of each transformer substation, determine at least one temporary power supply substation during the maintenance period of the target line to be inspected.

[0047] Specifically, based on the distributed energy storage situation of the transformer substations within the affected area of ​​the target line to be repaired, the transformer substations that need temporary power supply are statistically analyzed, and at least one temporary power supply transformer substation is identified.

[0048] 203. Determine the temporary power supply point corresponding to each temporary power supply area in the power supply point set.

[0049] Specifically, the outgoing switches of each initial power point in the power point set are traversed to obtain the remaining power of each initial power point; a candidate power point set is determined based on the remaining power of each initial power point and the minimum power load corresponding to each temporary power supply area; and a temporary power point corresponding to each temporary power supply area is determined from the candidate power point set according to the preset power point selection criteria.

[0050] In this embodiment, the preferred power supply point can be selected as the temporary power supply point by screening the power supply point that supplies the most transformer substations and / or has the lowest line loss and / or lowest line load rate. Specifically, determining the temporary power supply point corresponding to each temporary power supply transformer substation in the candidate power supply point set according to the preset preferred power supply point conditions includes: if the candidate power supply point set includes at least two candidate power supply points, then determining the number of available transformer substations corresponding to each candidate power supply point based on the remaining power of each candidate power supply point and the power demand of each temporary power supply transformer substation; determining the line loss and line load rate corresponding to each candidate power supply point; and determining the power supply point that supplies the most transformer substations, has the lowest line loss, and has the lowest line load rate as the optimal power supply point based on the number of available transformer substations, line loss, and line load rate corresponding to each candidate power supply point.

[0051] 204. Determine the target power point switching equipment for each temporary power supply area based on the temporary power point corresponding to each temporary power supply area.

[0052] The power point switching equipment within the power supply range is determined based on the temporary power point corresponding to each temporary power supply area; the equipment within the power supply range is traversed using a breadth-first search algorithm to determine the switching equipment whose rated current is greater than the rated current required by the area and is the closest to it, thus obtaining the target power point switching equipment.

[0053] Specifically, any temporary power supply area is designated as the target temporary power supply area, and the power point switching equipment within the power supply range is determined based on the temporary power supply point corresponding to each temporary power supply area, resulting in an initial set of switching equipment corresponding to the target temporary power supply area. From the initial set of switching equipment, power point switching equipment with rated current greater than the rated current of the area is selected, resulting in a candidate set of switching equipment corresponding to the target temporary power supply area. From the candidate set of switching equipment, the power point switching equipment closest to the target temporary power supply area is determined, resulting in the target power point switching equipment corresponding to the target temporary power supply area. The temporary power supply points corresponding to each temporary power supply area are traversed to obtain the target power point switching equipment corresponding to each temporary power supply area.

[0054] 205. Determine the optimal temporary jumper pair for each temporary power supply area by matching the target power point switchgear with the distribution transformer switchgear of each temporary power supply area.

[0055] This embodiment connects the optimal temporary jumper point pair via temporary jumper wires, enabling power supply to the temporary power supply area during maintenance of the temporary power supply point, thus ensuring normal power supply during the maintenance period of the temporary power supply area.

[0056] 206. Based on the optimal temporary jumper points corresponding to each temporary power supply area, perform temporary jumper topology analysis to determine the energized state of each device terminal.

[0057] The first and second device terminals are determined based on the device terminals of the optimal temporary jumper points corresponding to each temporary power supply area. The first device terminal belongs to the first connection point, and the second device terminal belongs to the second connection point. The first device terminal is added to the second connection point, and the second device terminal is added to the first connection point. If the target device to which the first device terminal belongs is in a closed state, the connection point where the terminal on the opposite side of the target device is located and the first connection point form a target electrical island. The energized state of each device terminal in the connection point within the island is set according to the energized state corresponding to the target electrical island.

[0058] Specifically, if the target device to which the first device terminal belongs is in a closed state, then forming a target electrical island by connecting the connection point of the opposite terminal of the target device with the first connection point includes: if the target device to which the first device terminal belongs is in a closed state, then obtaining the opposite terminal of the target device in the closed state, and forming an electrical island node by connecting the connection point of the opposite terminal with the first connection point, traversing each connection point to the target electrical island.

[0059] Specifically, the energization status of each device terminal in the connection point within the island is set according to the energization status of the target electrical island, including: if the device to which the opposite terminal or the first device terminal belongs is a power generation device, then the target electrical island is marked as energized; if the device to which the opposite terminal or the first device terminal belongs is a grounding device, then the target electrical island is marked as grounded; the energization status of the target electrical island is set to all device terminals in the connection point within the island, thus obtaining the energization status of each device terminal.

[0060] In this embodiment, the target power point switchgear and the distribution transformer switchgear are connected by a temporary jumper. The device terminals connected to both ends of the temporary jumper are defined as the first device terminal and the second device terminal, respectively. That is, the first device terminal corresponding to the target power point switchgear and the second device terminal corresponding to the distribution transformer switchgear.

[0061] 207. Based on the optimal temporary jumper point corresponding to each temporary power supply area, perform topology analysis of the power supply range to determine the set of equipment within the power supply range.

[0062] Connect the optimal temporary jumper points corresponding to each temporary power supply area to obtain a temporary wiring diagram; determine any device on the temporary wiring diagram as the target device and determine the target connection point where the target device is located; if the target electrical island corresponding to the target connection point is a live island, obtain each island connection point within the target electrical island; determine each device terminal corresponding to each island connection point, and construct a power supply range device set according to the device to which each device terminal belongs.

[0063] 208. Based on the optimal temporary jumper point corresponding to each temporary power supply area, perform power traceability topology analysis to determine the upstream and downstream equipment sets.

[0064] Connect the optimal temporary jumper points corresponding to each temporary power supply area to obtain a temporary wiring diagram; select any two devices on the temporary wiring diagram to obtain the starting device and the ending device; starting from the starting device, search for the corresponding switching devices from the starting device to the power supply point using a preset depth-first search algorithm with the tripping device as the boundary to obtain the upstream device set; starting from the ending device, search for the switching devices using a preset depth-first search algorithm with the tripping device and the upstream device as the boundary to obtain the downstream device set.

[0065] Optionally, starting from the starting device, a preset depth-first search algorithm is used to search for the corresponding switching devices from the starting device to the power supply point, with the tripping device as the boundary, to obtain the upstream device set. This includes: starting from the starting device, using the depth-first search algorithm with the tripping device as the boundary, searching for the path to the power supply, taking out the switches in the path in sequence, marking them as upstream devices, and obtaining the upstream device set.

[0066] Optionally, starting from the endpoint device, a depth-first search algorithm is used to search for switching devices, with the tripping device and upstream device as boundaries, to obtain the downstream device set. This includes: starting from the endpoint device, using the depth-first search algorithm, with the tripping device and upstream device as boundaries, searching all switches; if the searched device does not contain a jumper, obtaining the device on the other side of the connection point; if the searched device contains a jumper, obtaining the device on the other side of the jumper, marking the switch as downstream, and obtaining the downstream device set.

[0067] 209. The energized status, power supply range of the equipment set, and upstream and downstream equipment set corresponding to each equipment terminal are determined as the temporary jumper line operation data.

[0068] This embodiment conducts a comprehensive simulation analysis based on the determined optimal temporary jumper point, and provides accurate temporary jumper line operation data from multiple perspectives, including the energized state of each device terminal, the set of devices within the power supply range, and the sets of upstream and downstream devices.

[0069] 210. Generate a visualization interface based on the operation data of temporary jumper lines.

[0070] In response to user interaction commands, target coloring data is determined in the temporary jumper circuit operation data; the simulation operation results of the temporary jumper circuit are generated based on the target coloring data and displayed on the visualization interface.

[0071] In one feasible implementation, the target coloring data includes the energized state corresponding to each device terminal. The simulation results of the temporary jumper circuit are generated based on the target coloring data and displayed on the visualization interface. This includes: performing dynamic topology coloring based on the energized state corresponding to each device terminal; if any device terminal is an energized terminal, then the energized terminal is colored with a first preset color; if any device terminal is a de-energized terminal, then the de-energized terminal is colored with a second preset color; and traversing each device terminal to obtain the simulation results of the temporary jumper circuit, which are then displayed on the visualization interface.

[0072] After generating a visualization interface based on the temporary jumper line operation data, the process also includes storing the temporary jumper line operation data when the temporary jumper line task ends.

[0073] In this embodiment of the invention, by using real-time monitoring data to select temporary power supply points that meet the minimum power load of downstream distribution areas and combining them with the switching equipment of each distribution transformer in each area, the optimal temporary jump connection point is determined. This improves maintenance efficiency, avoids the time-consuming and labor-intensive nature of manual point selection and the risk of potential misoperation, and reduces safety hazards. Through temporary jump connection topology analysis, power supply range topology analysis, and power traceability topology analysis, the operation of temporary jump connections is simulated and analyzed. The operation status of temporary jump connection lines is comprehensively and intuitively visualized from multiple perspectives, including the energized state of equipment terminals, power supply range, and upstream and downstream equipment sets. This assists staff in making accurate judgments and operations, reduces safety hazards, improves power supply reliability, and provides strong decision support for power grid dispatching.

[0074] The above describes the simulation analysis method for temporary patch connections during distribution network maintenance in the embodiments of the present invention. The following describes the simulation analysis device for temporary patch connections during distribution network maintenance in the embodiments of the present invention. Please refer to [link / reference]. Figure 3 One embodiment of the distribution network maintenance temporary jumper simulation analysis device of the present invention includes:

[0075] The acquisition module 301 is used to acquire the set of power points within the influence range of the target line to be inspected and the real-time monitoring data of each transformer area on the target line to be inspected.

[0076] Processing module 302 is used to determine the optimal temporary jumper point pair for each temporary power supply area based on the real-time monitoring data and power point set of each area;

[0077] Analysis module 303 is used to perform temporary jump connection simulation analysis based on the optimal temporary jump connection point pair corresponding to each temporary power supply area, and obtain temporary jump connection line operation data;

[0078] The visualization module 304 is used to generate a visualization interface based on the operation data of the temporary jumper line.

[0079] In this embodiment of the invention, by monitoring data and power supply point sets in real time, the load demand of downstream transformer areas is comprehensively assessed, and the optimal temporary jumper point is automatically and accurately determined, improving maintenance efficiency, avoiding the time-consuming and labor-intensive nature of manual point selection and the risk of potential misoperation, and reducing safety hazards. Simulation analysis predicts line operation and generates a real-time visual interface to intuitively display the line status, assisting staff in making accurate judgments and operations, reducing safety hazards, improving power supply reliability, and providing strong decision support for power grid dispatching.

[0080] Please see Figure 4 Another embodiment of the distribution network maintenance temporary jumper simulation analysis device in this invention includes:

[0081] The acquisition module 301 is used to acquire the set of power points within the influence range of the target line to be inspected and the real-time monitoring data of each transformer area on the target line to be inspected.

[0082] Processing module 302 is used to determine the optimal temporary jumper point pair for each temporary power supply area based on the real-time monitoring data and power point set of each area;

[0083] Analysis module 303 is used to perform temporary jump connection simulation analysis based on the optimal temporary jump connection point pair corresponding to each temporary power supply area, and obtain temporary jump connection line operation data;

[0084] The visualization module 304 is used to generate a visualization interface based on the operation data of the temporary jumper line.

[0085] Optionally, the processing module 302 is specifically used for:

[0086] The first determining unit 3021 is used to determine at least one temporary power supply area during the maintenance of the target line under maintenance based on the real-time monitoring data of each area.

[0087] The filtering unit 3022 is used to determine the temporary power point corresponding to each temporary power supply area in the power point set;

[0088] The second determining unit 3023 is used to determine the target power point switching equipment corresponding to each temporary power supply area based on the temporary power point corresponding to each temporary power supply area.

[0089] The third determining unit 3024 is used to determine the target power point switchgear and the distribution transformer switchgear of each temporary power supply area as the optimal temporary jumper point pair for each temporary power supply area.

[0090] Optionally, the filtering unit 3022 is specifically used to: traverse the outgoing switches of each initial power point in the power point set to obtain the remaining power of each initial power point;

[0091] The set of candidate power points is determined based on the remaining power of each initial power point and the minimum power load corresponding to each temporary power supply area.

[0092] Based on the preset power point selection criteria, the temporary power point corresponding to each temporary power supply area is determined from the candidate power point set.

[0093] Optionally, the second determining unit 3023 is specifically used to: determine any temporary power supply area as the target temporary power supply area, and determine the power point switching equipment within the power supply range according to the temporary power point corresponding to each temporary power supply area, so as to obtain the initial set of switching equipment corresponding to the target temporary power supply area;

[0094] In the initial set of switching equipment, power point switching equipment with rated current greater than the rated current of the transformer area is selected to obtain the set of candidate switching equipment corresponding to the target temporary power supply transformer area.

[0095] In the candidate set of switching equipment, determine the power point switching equipment that is closest to the target temporary power supply area, and obtain the target power point switching equipment corresponding to the target temporary power supply area;

[0096] Iterate through the temporary power supply points corresponding to each temporary power supply area to obtain the target power supply point switching equipment for each temporary power supply area.

[0097] Optionally, the analysis module 303 includes:

[0098] Temporary jumper topology unit 3031 is used to perform temporary jumper topology analysis based on the optimal temporary jumper point pair corresponding to each temporary power supply area to determine the energized state of each device terminal.

[0099] The power supply range topology unit 3032 is used to perform power supply range topology analysis based on the optimal temporary jumper point pair corresponding to each temporary power supply area to determine the power supply range equipment set.

[0100] The power traceability topology unit 3033 is used to perform power traceability topology analysis based on the optimal temporary jumper point pair corresponding to each temporary power supply area to determine the upstream and downstream equipment set.

[0101] The fourth determining unit 3034 is used to determine the energized state, power supply range equipment set, and upstream and downstream equipment set corresponding to each equipment terminal as temporary jumper line operation data.

[0102] Optionally, the temporary jumper topology unit 3031 is specifically used to: determine the first device terminal and the second device terminal according to the device terminals of the optimal temporary jumper point pair corresponding to each temporary power supply area, wherein the first device terminal belongs to the first connection point and the second device terminal belongs to the second connection point;

[0103] Connect the first device terminal to the second connection point, and connect the second device terminal to the first connection point;

[0104] If the target device to which the first device terminal belongs is in a closed state, then the connection point of the terminal on the opposite side of the target device and the first connection point are combined to form a target electrical island;

[0105] The energization state of each device terminal in the connection point within the island is set according to the energization state corresponding to the target electrical island.

[0106] Optionally, the power supply range topology unit 3032 is specifically used to: connect the optimal temporary jumper points corresponding to each temporary power supply area to obtain a temporary wiring diagram;

[0107] Identify any device on the temporary wiring diagram as the target device, and determine the target connection point where the target device is located;

[0108] If the target electrical island corresponding to the target connection point is a charged island, then obtain the connection points within each island of the target electrical island;

[0109] Determine the connection point within each island to correspond to each device terminal, and construct a power supply range device set based on the device to which each device terminal belongs.

[0110] Optionally, the power traceability topology unit 3033 is specifically used to: connect the optimal temporary jumper points corresponding to each temporary power supply area to obtain a temporary wiring diagram;

[0111] Select any two devices on the temporary wiring diagram to obtain the starting device and the ending device;

[0112] Starting from the starting device, according to the preset depth-first search algorithm, with the tripping device as the boundary, search for the corresponding switching devices from the starting device to the power supply point to obtain the upstream device set;

[0113] Starting from the endpoint device, a search for switching devices is performed using a preset depth-first search algorithm, with the tripping device and upstream device as boundaries, to obtain the set of downstream devices.

[0114] Optionally, visualization module 304 includes:

[0115] The fifth determining unit 3041 is used to determine the target coloring data in the temporary jumper line operation data in response to user interaction instructions;

[0116] Display unit 3042 is used to generate simulation results of temporary jumper circuits based on target coloring data and display them on the visualization interface.

[0117] Optionally, the display unit 3042 is specifically used for: performing dynamic topology coloring according to the power-on state of each device terminal;

[0118] If any device terminal is a live terminal, then the live terminal is colored using a first preset color;

[0119] If any device terminal is a power-off terminal, then the power-off terminal is colored using a second preset color;

[0120] The simulation results of the temporary jumper circuit are obtained by iterating through each device terminal and displayed on the visualization interface.

[0121] Optionally, the distribution network maintenance temporary jumper simulation analysis device also includes: a task creation module 305, used to determine the real-time feeder cross-section of the current feeder diagram as a temporary feeder cross-section; determine the target line to be maintained on the temporary feeder cross-section, and create a temporary jumper task.

[0122] Optionally, the distribution network maintenance temporary jump connection simulation analysis device also includes: a data storage module 306, used to store the temporary jump connection line operation data when the temporary jump connection task is completed.

[0123] In this embodiment of the invention, by using real-time monitoring data to select temporary power supply points that meet the minimum power load of downstream distribution areas and combining them with the switching equipment of each distribution transformer in each area, the optimal temporary jump connection point is determined. This improves maintenance efficiency, avoids the time-consuming and labor-intensive nature of manual point selection and the risk of potential misoperation, and reduces safety hazards. Through temporary jump connection topology analysis, power supply range topology analysis, and power traceability topology analysis, the operation of temporary jump connections is simulated and analyzed. The operation status of temporary jump connection lines is comprehensively and intuitively visualized from multiple perspectives, including the energized state of equipment terminals, power supply range, and upstream and downstream equipment sets. This assists staff in making accurate judgments and operations, reduces safety hazards, improves power supply reliability, and provides strong decision support for power grid dispatching.

[0124] above Figure 3 and Figure 4 The temporary jump connection simulation analysis device for power distribution network maintenance in this embodiment of the invention is described in detail from the perspective of modular functional entities. The temporary jump connection simulation analysis device in this embodiment of the invention is described in detail from the perspective of hardware processing.

[0125] See Figure 5 As shown, the temporary jumper simulation analysis device includes a processor 500 and a memory 501. The memory 501 stores machine-executable instructions that can be executed by the processor 500. The processor 500 executes the machine-executable instructions to implement the self-testing method of the inverter circuit described above.

[0126] Furthermore, Figure 5 The temporary jumper simulation analysis device shown also includes a bus 502 and a communication interface 503. The processor 500, the communication interface 503 and the memory 501 are connected through the bus 502.

[0127] The memory 501 may include high-speed random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Communication between this system network element and at least one other network element is achieved through at least one communication interface 503 (which can be wired or wireless), such as the Internet, wide area network, local area network, or metropolitan area network. The bus 502 may be an ISA bus, PCI bus, or EISA bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 5 The symbol is represented by a single double-headed arrow, but this does not mean that there is only one bus or one type of bus.

[0128] The processor 500 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method can be completed by the integrated logic circuitry in the hardware of the processor 500 or by instructions in software form. The processor 500 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this disclosure. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this disclosure can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 501. The processor 500 reads the information in memory 501 and, in conjunction with its hardware, completes the method steps of the aforementioned embodiment.

[0129] The present invention also provides a computer-readable storage medium, which can be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium. The computer-readable storage medium stores instructions that, when executed on a computer, cause the computer to perform the steps of the simulation analysis method for temporary jump-connection during power distribution network maintenance.

[0130] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0131] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0132] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A simulation analysis method for temporary patch connections during distribution network maintenance, characterized in that, The simulation analysis method for temporary jump connections during power distribution network maintenance includes: Obtain the set of power points within the influence range of the target line to be inspected and the real-time monitoring data of each transformer station on the target line to be inspected; Based on the real-time monitoring data of each transformer area and the set of power supply points, determine the optimal temporary jumper point pair corresponding to each temporary power supply transformer area; Based on the optimal temporary jumper point pair corresponding to each temporary power supply area, a temporary jumper simulation analysis is performed to obtain the temporary jumper line operation data. A visualization interface is generated based on the temporary jumper line operation data; The step of determining the optimal temporary jumper point pair corresponding to each temporary power supply area based on the real-time monitoring data of each transformer substation and the set of power supply points includes: Based on the real-time monitoring data of each transformer substation, at least one temporary power supply substation is determined during the maintenance period of the target line to be inspected. Determine the temporary power point corresponding to each temporary power supply area from the set of power points; Determine the target power point switching equipment for each temporary power supply area based on the temporary power point corresponding to each temporary power supply area. The target power point switchgear corresponding to each temporary power supply area and the distribution transformer switchgear of each temporary power supply area are determined as the optimal temporary jumper point pair for each temporary power supply area. The temporary jumper simulation analysis is performed based on the optimal temporary jumper point pair corresponding to each temporary power supply area to obtain temporary jumper line operation data, including: Based on the optimal temporary jumper point pair corresponding to each temporary power supply area, the energized state of each device terminal is determined by performing temporary jumper topology analysis. The set of devices within the power supply range is determined by performing a topology analysis of the optimal temporary jumper points corresponding to each temporary power supply area. Based on the optimal temporary jumper point pair corresponding to each temporary power supply area, a power traceability topology analysis is performed to determine the upstream and downstream equipment sets. The energized state of each device terminal, the set of devices within the power supply range, and the set of upstream and downstream devices are determined as the temporary jumper line operation data.

2. The simulation analysis method for temporary patch connections during distribution network maintenance according to claim 1, characterized in that, The step of determining the temporary power point corresponding to each temporary power supply area in the set of power points includes: Iterate through the outgoing switches of each initial power point in the set of power points to obtain the remaining power of each initial power point; The set of candidate power points is determined based on the remaining power of each initial power point and the minimum power load corresponding to each temporary power supply area. Based on preset power point preference criteria, the temporary power point corresponding to each temporary power supply area is determined from the set of candidate power points.

3. The simulation analysis method for temporary patch connections during distribution network maintenance according to claim 1, characterized in that, The step of determining the target power point switching equipment corresponding to each temporary power supply area based on the temporary power point corresponding to each temporary power supply area includes: Any temporary power supply area is determined as the target temporary power supply area, and the power point switching equipment within the power supply range is determined according to the temporary power point corresponding to each temporary power supply area, so as to obtain the initial set of switching equipment corresponding to the target temporary power supply area. In the initial set of switching devices, power point switching devices with rated currents greater than the rated current of the distribution area are selected to obtain the candidate set of switching devices corresponding to the target temporary power supply distribution area. From the set of candidate switching devices, determine the power point switching device that is closest to the target temporary power supply area, and obtain the target power point switching device corresponding to the target temporary power supply area; Iterate through the temporary power supply points corresponding to each temporary power supply area to obtain the target power supply point switching equipment for each temporary power supply area.

4. The simulation analysis method for temporary jump connections during distribution network maintenance according to claim 1, characterized in that, The step of determining the energized state of each device terminal by performing temporary jumper topology analysis based on the optimal temporary jumper points corresponding to each temporary power supply area includes: The first and second equipment terminals are determined based on the equipment terminals of the optimal temporary jumper point corresponding to each temporary power supply area. The first equipment terminal belongs to the first connection point, and the second equipment terminal belongs to the second connection point. Connect the first device terminal to the second connection point, and connect the second device terminal to the first connection point; If the target device to which the first device terminal belongs is in a connected state, then the connection point where the terminal on the opposite side of the target device is located and the first connection point are combined to form a target electrical island; Set the energized state of the target electrical island to the energized state of each device terminal in the connection point within the island.

5. The simulation analysis method for temporary patch connections during distribution network maintenance according to claim 1, characterized in that, The process of determining the set of devices within the power supply range through topology analysis based on the optimal temporary jumper points corresponding to each temporary power supply area includes: Connect the optimal temporary jumper points corresponding to each temporary power supply area to obtain the temporary wiring diagram; Identify any device on the temporary wiring diagram as the target device, and determine the target connection point where the target device is located; If the target electrical island corresponding to the target connection point is a charged island, then obtain each island connection point within the target electrical island; Identify each device terminal corresponding to each connection point within each island, and construct a power supply range device set based on the device to which each device terminal belongs.

6. The simulation analysis method for temporary jump connections during distribution network maintenance according to claim 1, characterized in that, The process of determining the upstream and downstream equipment sets by performing power traceability topology analysis based on the optimal temporary jumper points corresponding to each temporary power supply area includes: Connect the optimal temporary jumper points corresponding to each temporary power supply area to obtain the temporary wiring diagram; Select any two devices on the temporary wiring diagram to obtain the starting device and the ending device; Starting from the starting device, according to the preset depth-first search algorithm, with the circuit breaker device as the boundary, search for the corresponding switching devices from the starting device to the power supply point to obtain the upstream device set; Starting from the endpoint device, a search for switching devices is performed using a preset depth-first search algorithm, with the tripping device and the upstream device as boundaries, to obtain a set of downstream devices.

7. The simulation analysis method for temporary jump connections during distribution network maintenance according to claim 1, characterized in that, The step of generating a visualization interface based on the temporary jumper line operation data includes: In response to user interaction commands, target coloring data is determined from the temporary jumper line operation data; The simulation results of the temporary jumper circuit are generated based on the target coloring data and displayed on the visualization interface.

8. The simulation analysis method for temporary jump connections during distribution network maintenance according to claim 7, characterized in that, The target coloring data includes the energized state corresponding to each device terminal. The step of generating simulation results for temporary jumper circuits based on the target coloring data and displaying them on the visualization interface includes: Dynamic topology coloring is performed based on the electrical state of each device terminal. If any device terminal is a live terminal, then the live terminal is colored with a first preset color; If any device terminal is a power-off terminal, then the power-off terminal is colored using a second preset color; The simulation results of the temporary jumper circuit are obtained by iterating through each device terminal and displayed on the visualization interface.

9. The simulation analysis method for temporary patch connections during distribution network maintenance according to any one of claims 1-8, characterized in that, Before acquiring the set of power points within the influence range of the target line under maintenance and the real-time monitoring data of each transformer substation on the target line under maintenance, the following steps are also included: The real-time feeder section of the current feeder diagram is designated as the temporary feeder section; Identify the target line to be repaired on the temporary feeder section and create a temporary jumper task.

10. The simulation analysis method for temporary jump connections during distribution network maintenance according to claim 9, characterized in that, After generating the visualization interface based on the temporary jumper line operation data, the method further includes: When the temporary jumper task ends, the operation data of the temporary jumper line is stored.

11. A simulation analysis device for temporary patch connections during power distribution network maintenance, characterized in that, The power distribution network maintenance temporary jump connection simulation analysis device includes: The acquisition module is used to acquire the set of power points within the influence range of the target line to be inspected and the real-time monitoring data of each transformer area on the target line to be inspected. The processing module is used to determine the optimal temporary jumper point pair corresponding to each temporary power supply area based on the real-time monitoring data of each area and the set of power supply points; The analysis module is used to perform temporary jumper simulation analysis based on the optimal temporary jumper point pair corresponding to each temporary power supply area, and obtain temporary jumper line operation data. The visualization module is used to generate a visualization interface based on the operation data of the temporary jumper line; The processing module includes: The first determining unit is used to determine at least one temporary power supply area during the maintenance of the target line to be inspected based on the real-time monitoring data of each area. The filtering unit is used to determine the temporary power point corresponding to each temporary power supply area in the set of power points; The second determining unit is used to determine the target power point switching equipment corresponding to each temporary power supply area based on the temporary power point corresponding to each temporary power supply area. The third determining unit is used to determine the target power point switching equipment and the distribution transformer switching equipment of each temporary power supply area as the optimal temporary jump point pair for each temporary power supply area. The analysis module includes: The temporary jumper topology unit is used to perform temporary jumper topology analysis based on the optimal temporary jumper point pair corresponding to each temporary power supply area to determine the energized state of each device terminal; The power supply range topology unit is used to determine the set of power supply range devices by performing power supply range topology analysis based on the optimal temporary jumper points corresponding to each temporary power supply area. The power traceability topology unit is used to perform power traceability topology analysis based on the optimal temporary jumper point pair corresponding to each temporary power supply area to determine the upstream and downstream equipment sets. The fourth determining unit is used to determine the energized state of each device terminal, the set of devices within the power supply range, and the set of upstream and downstream devices as temporary jumper line operation data.

12. A temporary jumper simulation analysis device, characterized in that, The temporary jumper simulation analysis device includes: a memory and at least one processor, wherein the memory stores instructions; The at least one processor invokes the instructions in the memory to cause the temporary jumper simulation analysis device to execute the distribution network maintenance temporary jumper simulation analysis method as described in any one of claims 1-10.

13. A computer-readable storage medium storing instructions thereon, characterized in that, When the instruction is read and executed, it performs the simulation analysis method for temporary jump connection during distribution network maintenance as described in any one of claims 1-10.

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