An open point-based assisted analysis graph automatic visualization method for transfer

Abstract

This invention relates to an automatic visualization method for auxiliary analysis diagrams of power supply switching based on open points. The method includes the following steps: obtaining an operation point; determining a selection device based on the location of the operation point; searching for a list of possible open points based on the selection device; filtering from the list of possible open points to obtain a list of actual open points, wherein the open points are line-side disconnecting devices that are energized at both ends and in a separated state; and generating a visualization diagram with six perspectives based on the list of actual open points. Compared with the prior art, this invention has advantages such as ease of use.

Description

Technical Field

[0001] This invention relates to the field of power system technology, and in particular to an automatic visualization method for power transfer auxiliary analysis diagrams based on opening points. Background Technology

[0002] In existing applications related to feeder openings, personnel typically mark these openings by hanging signs on electrical diagrams. This method has three drawbacks: first, it lacks intelligent filtering, resulting in incomplete or excessive marking of openings; second, it cannot be synchronously marked after changes in operating conditions, often exhibiting a lag and failing to accurately reflect the feeder opening status; and third, the large number of graphic elements in the entire diagram makes it difficult to focus on local related diagrams. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a convenient automatic visualization method for auxiliary analysis diagrams based on opening points.

[0004] The objective of this invention can be achieved through the following technical solutions:

[0005] An automatic visualization method for supply transfer auxiliary analysis diagrams based on opening points includes the following steps:

[0006] Obtain an operation point, and determine a selection device based on the location of the operation point;

[0007] Based on the selected device, a list of possible opening points is obtained by searching. From the list of possible opening points, a list of actual opening points is obtained by filtering. The opening point is a line-side disconnecting device that is energized at both ends and in a separated state.

[0008] A visualization is generated based on the list of actual opening points, and the visualization is based on a pre-stored electrical system diagram.

[0009] Furthermore, obtaining a list of possible opening points based on the selected device specifically involves:

[0010] A local feeder search is performed on the side where the selected device is located, including breadth and depth searches, tracing back to the substation outgoing line, and searching for switching devices that separate the feeder edges to form the list of possible opening points.

[0011] Furthermore, obtaining the list of actual opening points by filtering from the list of possible opening points includes:

[0012] Perform a feeder analysis on the opposite side for each possible opening point in the list of possible opening points, and determine whether the substation outgoing line can be traced from the other terminal of the possible opening point to the opposite power supply side. If so, add the possible opening point as a real opening point to the list of real opening points.

[0013] Furthermore, filter conditions are overlaid during the search process, and opening points that meet the filter conditions are deleted from the list.

[0014] Furthermore, the filtering condition is that a filtering device exists on the search path.

[0015] Furthermore, the screening equipment includes multiple types of double-sided fuses, double-sided pole-mounted load switches, switches on the same busbar, switches in the same substation, and sectional switches in N-level switch stations.

[0016] Furthermore, the visualization diagrams include a basic diagram, an opening point topology diagram, a regularized electrical system single-line diagram, an in-situ balanced electrical system single-line diagram, a geographic electrical system single-line diagram, and an extracted feeder electrical system single-line diagram.

[0017] Furthermore, the basic diagram provides a visual cue for the feeder by highlighting, changing color, or flashing.

[0018] Furthermore, the method also includes:

[0019] When generating the visualization, an operable flashing point is displayed at each opening point. When an operation command is received for the flashing point, the local ring network diagram on the opposite side is automatically generated.

[0020] The present invention also provides a computer-readable storage medium including one or more programs executable by one or more processors of an electronic device, said one or more programs including instructions for performing the automatic visualization method for auxiliary analysis graphs as described above.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. This invention obtains the actual opening points through a screening method, enabling rapid automatic generation of visualization diagrams and improving ease of use.

[0023] 2. This invention enables configurable intelligent access point analysis through filtering conditions, analyzes and summarizes load conditions in real time within seconds, automatically generates six types of diagrams within seconds, quickly expands to the opposite side, and displays feeder colors. It can provide as much information as possible with minimal operations, and has important application significance for business personnel's work on diagrams, distribution and dispatching, intelligent transfer, comparison of operating modes, and statistical analysis of distribution network structure qualification rate (access point index). Attached Figure Description

[0024] Figure 1 This is a flowchart of the method of the present invention;

[0025] Figure 2 This is a simplified schematic diagram of the minimum electric system island.

[0026] Figure 3The simplified diagram shows the results of the minimum electric system island reduction.

[0027] Figure 4 A schematic diagram illustrating the effect of orthogonalizing the electric field lines by drawing two branches out at 90 degrees from each other in the same quadrant.

[0028] Figure 5 A schematic diagram illustrating the effect of three branches in the same quadrant being drawn out at a 45-degree angle.

[0029] Figure 6 This is a schematic diagram illustrating the effect of bypassing the power station in the electrical system diagram.

[0030] Figure 7 This is a diagram illustrating the principle of grid-based obstacle avoidance.

[0031] Figure 8 Diagram showing the routing of electric lines before the convexity is eliminated;

[0032] Figure 9 Diagram showing the routing of electrical lines after convexity reduction;

[0033] Figure 10 A single-line electrical system diagram for a station with multiple sequentially connected buildings;

[0034] Figure 11 for Figure 10 A connected and extended layout diagram;

[0035] Figure 12 A single-line electrical system diagram for a station building with multiple reverse connections;

[0036] Figure 13 for Figure 12 A connected and extended layout diagram;

[0037] Figure 14 This is a schematic diagram of the branch angle index for a regular single-line graph;

[0038] Figure 15 This is a schematic diagram of the in-situ balancing branch angle placeholder index in section 3.7.2.

[0039] Figure 16 A rendering of the automatic vertical labeling effect for the outgoing line points of the power station;

[0040] Figure 17 Image showing the effect of automatic labeling along the direction for both pole transformer nameplate and electrical system number;

[0041] Figure 18 Flowchart for opening point analysis and filtering;

[0042] Figure 19 This is an overall rendering of the basic diagram;

[0043] Figure 20 This is a magnified view of a portion of the basic diagram;

[0044] Figure 21 A simplified topological diagram;

[0045] Figure 22 This is a single-line diagram of a regular feeder electrical system;

[0046] Figure 23 This is a single-line diagram of a balanced feeder electrical system.

[0047] Figure 24 This is a single-line diagram of the feeder geoelectric system;

[0048] Figure 25 This is a single-line diagram of the power system for a withdrawable feeder.

[0049] Figure 26 This is a local ring network diagram formed by unfolding on the opposite side. Detailed Implementation

[0050] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0051] Terminology Explanation

[0052] Opening point: Generally speaking, the opening point in this invention refers to the line-side disconnecting device that is energized at both ends and in a separated state, including pole-mounted circuit breakers, load switches in ring network (cabinet), bus tie sectionalizing switches in the first-level switch station, etc.

[0053] This side / opposite side: This side refers to the feed line analyzed by the device currently clicking the mouse; the opposite side refers to the feed line (or line) analyzed on the other side of the opening point.

[0054] Repulsion-Tension Balance Algorithm: The algorithm applies a spatial object equilibrium force model to the nodes of the power mapping components (power station / switching equipment / load equipment). There is repulsion between nodes and tension between adjacent nodes. Through multiple iterations, a positional balance (or a limited displacement range) is achieved.

[0055] Minimal electrical system island: A group of electrical connection devices enclosed by a conductor and the nearest disconnecting device (the one closest to the disconnecting device in each direction).

[0056] Orthogonalization: Orthogonalize the connecting lines (electrical lines) and intelligently bypass them as much as possible when entering and exiting the power station.

[0057] Intelligent bump reduction: The bumps and depressions of single-connection components (without branches, where the connecting line + component + connecting line produce a bump and depression shape) generated by orthogonalization are smoothed out as much as possible to increase the aesthetics of the graphic.

[0058] Small equipment group (pole transformer group): It is usually a simple combination of two types of equipment: pole-mounted fuse + pole transformer, or pole-mounted fuse + user point. It occupies little space and can be added to the final step of automatic mapping.

[0059] "One point, six diagrams": "One point" has two meanings: one is "opening point", and the other is "clicking the mouse on the diagram". "Six diagrams" are based on the topology analysis results and realize the automatic generation and display of six types of diagrams, namely, the basic diagram, the opening point topology simplified diagram, the regularized power system single-line diagram, the in-situ balanced power system single-line diagram, the geographic power system single-line diagram, and the extracted feeder power system single-line diagram.

[0060] like Figure 1 As shown, this embodiment provides an automatic visualization method for auxiliary analysis diagrams of power transfer based on open points, including the following steps: Step S1, obtaining an operation point and determining a selection device based on the location of the operation point; Step S2, searching for a list of possible open points based on the selection device, and filtering from the list of possible open points to obtain a list of actual open points, wherein the open point is a line-side disconnecting device that is energized at both ends and in a separated state; Step S3, generating a visualization diagram based on the list of actual open points, wherein the visualization diagram is generated based on a pre-stored electrical system diagram. This method can automatically analyze open points and generate visualization diagrams after receiving an operation point, which has important application significance for business personnel's work on the diagram, distribution dispatching and emergency response, intelligent power transfer, comparison of operating modes, and statistical analysis of distribution network structure qualification rate (open point index).

[0061] 1. Reference to electrical diagram drawing techniques

[0062] The visualization portion of this method employs the electric field diagram generation method disclosed in patent application 202110025337.8, such as obtaining the electric field diagram based on minimum electric field island simplification, repulsive tension balance, electric field line orthogonalization, intelligent de-convexity, small device combination, and automatic annotation algorithms. Key technologies involved include:

[0063] (1) Simplification of the minimum electric system island

[0064] A minimum electrical island refers to a set of topologically connected equipment, including a group of switching devices, incoming and outgoing lines to the station, and the end of the line. The island's edge includes switching devices, the end of the line, or the incoming point to the next station. Figure 2 As shown.

[0065] The single-line diagram of the in-situ balanced feeder system is simplified according to geographical orientation, so that the subsequent location balancing algorithm can be completed as quickly as possible and crossovers can be minimized.

[0066] However, in a regular feeder electrical system single-line diagram, a basic horizontal and vertical direction is maintained, so it automatically expands according to the direction of the guiding equipment. If a branch occurs, it automatically guides the diagram according to the branch angle index in the directions of three 90-degree angles and four 45-degree angles.

[0067] The rule for simplifying the minimum electrical system island is to merge unbranched conductor segments, cable segments, and auxiliary connecting lines of the same equipment type on a line to form a single electrical system segment. Cable segments are simplified and merged together; overhead conductor segments are simplified and merged together. For example... Figure 3 As shown, there are no branches or disconnecting devices between poles 9 and 12 on the line, so it can be simplified to a single electrical line.

[0068] (2) Repulsion-Tension Balance Algorithm

[0069] According to mechanical modeling, for any topological graph, there are weights (mass or charge) between nodes, repulsive forces between nodes, and tensile forces between adjacent nodes through electric field lines. After multiple iterations of motion, a relatively ideal positional equilibrium state will be reached.

[0070] (3) Orthogonalization of electric field lines

[0071] After achieving overall tension balance, to ensure relatively straight and vertical wiring, the electrical lines need to be orthogonalized. Orthogonalization of electrical lines specifically includes the following steps:

[0072] 1) Before each cycloid, perform an angle placeholder index and avoid the already occupied angles. Right angles in the same quadrant are given priority. Once a right angle is occupied, a 45-degree angle is used.

[0073] 2) For electrical lines between purely off-site equipment, orthogonality of the electrical lines is achieved by straightening, bending, and regularizing the lines;

[0074] 3) Orthogonalize the power station outgoing lines. Consider the layout of the other end of the incoming and outgoing lines (above and below the power station) in eight directions around the power station. There are 16 possible configurations for each incoming / outgoing point. Consider bypassing the power station from above or below. For example, if the outgoing line connecting to the power station is below the power station, and the coordinates of the other end of the line are at the upper left corner, then add two nodes near the power station. One node extends out of the power station from below, and the other node turns to the left at a right angle, extending beyond the left side of the station frame. This completes the bypass from the lower left of the power station and connects to the upper left end. The bypass methods for other directions are similar. Figures 4-6 As shown.

[0075] (4) Mesh obstacle avoidance

[0076] Based on the number of device nodes, the mapping area is divided into an M*N square grid, aiming to retain only one node per grid. The number of nodes within a grid is determined; if multiple nodes exist within the same grid, excess device nodes are pushed to surrounding grids to further balance node distribution.

[0077] Obstacle avoidance should be prioritized for power plant-type grid obstacle avoidance, followed by obstacle avoidance for switching equipment and transformer-type equipment. For example... Figure 7 As shown, the breaking device is a fixed-length edge / point and can be within one grid, but different breaking devices cannot be within one grid.

[0078] (5) Intelligent bump reduction

[0079] The orthogonalization process introduced earlier will inevitably create repetitive points and loops in some complex power lines (such as those connecting power stations at both ends), resulting in some "bumps". The purpose of this step is to remove repetitive points, eliminate loops, remove obvious abrupt points, and perform vertical truncation.

[0080] The de-protrusion treatment of electrical wires is used to compress electrical wires (protruding parts) containing protrusions. The types of electrical wires containing protrusions include: 1) terminal electrical wires; 2) electrical wires + electrical wires with local parallel extensions; 3) electrical wires + breaks + electrical wires with local parallel extensions or loops.

[0081] By having the program identify this "protruding" wiring pattern, and after pattern recognition, the program performs anti-protrusion processing as much as possible, compressing it to a harmonious position. During the compression process, it checks for overlap of existing equipment to make the electrical diagram more aesthetically pleasing. The effects before and after anti-protrusion are as follows: Figures 8-9 As shown.

[0082] (6) Station building connection and extension layout

[0083] If a single feeder line connects to too many substations, in the automatic rule-based mapping mode, without a good guidance scheme (manual guidance provides a preview effect, which avoids this situation), the substations will be crisscrossed (especially when substations are connected to each other in a "skewer" manner), resulting in a messy single-line diagram of the entire power system.

[0084] The key to the interconnected and extended layout of station buildings is to calculate a directional control line based on the direction of the triangular arrows at the entry and exit points and the direction of the axis of the next power station's incoming line, forming a "string of candied hawthorns" in one direction, such as... Figures 10-13 As shown.

[0085] Sequentially connected stations: The outgoing line point of a power station is adjacent to the incoming line point of the next power station, and they are connected in one direction.

[0086] Reverse-sequence series stations: The outgoing line point of a power station is not adjacent to the incoming line point of the next power station, and other incoming or outgoing line points are crossed in between.

[0087] (7) Angle placeholder index

[0088] Angular positioning mainly addresses the issue of balanced layout, avoiding excessive overlap or clustering of devices in one direction, thus achieving relative balance.

[0089] The electrical line branch layout automatically expands according to the direction of the guiding equipment. If multiple branches occur, the system automatically guides the mapping based on the branch angle index, following three 90-degree and four 45-degree directions (straight-line movement prioritizes), such as... Figure 14 As shown.

[0090] If multiple branches appear, the graph is automatically guided to form a map based on the branch angle index, following three 90-degree and four 45-degree directions (straight-line movement is prioritized). Since it's a balancing process in place, branches may be in the same direction; in this case, a 45-degree angle is used to guide the graph outwards, avoiding element overlap. Figure 15 As shown.

[0091] (8) Automatic annotation

[0092] The metadata configuration includes the labeling attributes, size, color, and arrangement of the equipment. After completing the small equipment composition diagram, the labeling position and angle are automatically calculated based on the metadata configuration information of the labeled equipment, line equipment length, angle, etc., such as vertical labeling of substation outgoing lines and angle extension direction labeling of distribution transformers, completing equipment labeling in one go. The text drawing content includes the local / opposite side station, line, switchgear, load (pole transformer, distribution transformer, user point), and ideally, the line opening point should also indicate the pole number information. Figure 16 and Figure 17 As shown.

[0093] 2. Analysis and screening of opening points

[0094] In this method, the rules for generating the actual open point list include analysis rules and line open point selection rules. The analysis rules are as follows: on the local side, trace back from the selected equipment to the power supply side to the substation outgoing switch; on the opposite side, analyze from the other terminal of the open point to the power supply side on the opposite side to the substation outgoing switch. The line open point selection rules are as follows: fuses and disconnect switches are not considered open points [model configurable]; based on filtering conditions, "open points" on both sides' paths that are powered by fuses, powered by pole-mounted load switches, pass through N-level switch stations, are on the same busbar, or are on the same substation can be filtered.

[0095] The process of obtaining the list of actual opening points specifically includes: performing a feeder search on the side where the selected device is located, including breadth-first search and depth-first search, tracing back to the substation outgoing line, searching for switching devices where the feeder edges are separated, and forming the list of possible opening points; performing feeder analysis on the opposite side for each possible opening point in the list of possible opening points, determining whether it is possible to trace back to the substation outgoing line from the other terminal of the possible opening point to the opposite power supply side, and if so, adding the possible opening point as an actual opening point to the list of actual opening points.

[0096] In the preferred embodiment, after obtaining the list of possible opening points and the list of actual opening points, each opening point is further filtered. In this embodiment, the filtering conditions for opening points are set, and those that meet the filtering conditions are considered "false opening points". Specifically, the filtering conditions set in this embodiment include five sets of combined filtering conditions: "filtering double-sided fuses", "filtering double-sided pole-mounted load switches", "filtering the same busbar", "filtering the same substation", and "analyzing N-level switch stations". The filtering equipment can include multiple opening points that meet the conditions in real time.

[0097] like Figure 18 As shown, after overlaying the filtering conditions, the opening point analysis needs to be performed once for both the uplink and downlink. Based on the clicked device, the opening point analysis algorithm is first used to perform a breadth-depth search to find the feeder outlet. Simultaneously, it is checked whether the path meets the filtering conditions. If a filtering device is found, the analysis needs to be performed again from the feeder outlet switch to form a corresponding structure of filtering device -> opening point.

[0098] After analyzing the initial opening point, the same combination of conditions is used to analyze the feeder on the other side. If there is also a screening and filtering device that meets the conditions, it is a "false opening"; otherwise, it is a "true opening". The distinction between true and false openings depends on the screening conditions used in the work. In actual work, "filtering double-sided fuses", "filtering double-sided pole-mounted load switches", and "filtering the same busbar" are usually selected. The most reliable opening point is analyzed and used first. Only when no other option is available is the condition gradually relaxed, and the next most reliable opening point is selected.

[0099] The information contained in the list of actual opening points obtained in this embodiment mainly includes: outgoing line on this side, voltage level, main feeder to which it belongs, substation to which it belongs, line to which it belongs, load details supplied by the main feeder (pole transformer / distribution transformer / user point), line opening point, line name on the opposite side, main feeder to which it belongs on the opposite side, substation on the opposite side, load details supplied by the opposite side (pole transformer / distribution transformer / user point).

[0100] After obtaining the actual opening points, the opening points of each 10kV feeder within the specified range can be analyzed, and the opening point qualification rate can be calculated. Based on the requirement that pure cable lines have at least one opening and mixed lines have at least three openings (these indicators can be adjusted according to management needs), the qualification rate of the feeder structure can be statistically analyzed to identify weak feeders.

[0101] 3. Visualization chart

[0102] After completing the opening point analysis, this method can automatically generate and display six types of diagrams: basic diagram, opening point topology diagram, regularized power system single-line diagram, in-situ balanced power system single-line diagram, geographic power system single-line diagram, and extracted feeder power system single-line diagram.

[0103] Basic Diagram: On the diagram operated by the mouse (usually an electrical system diagram or geographical map), the feeders are highlighted based on the analysis results, and their opening points are clearly marked. As the field of view becomes clearer and zoomed in, detailed statistical information of the feeders on this side and the feeders on the opposite side can be listed on the diagram. The basic diagram in this embodiment is as follows. Figure 19 and Figure 20 As shown.

[0104] Simplified Topology Diagram: This diagram omits intermediate connecting devices and directly shows the power supply line from this side -> (through) the opening point -> (towards) the power supply line from the opposite side. It includes text labels for the load summary of each feeder and the information of the opening point, and is generated automatically. The simplified diagram is concise and intuitive, clearly illustrating the connection relationships between feeders and between power stations.

[0105] To ensure visual appeal, the topology diagram is drawn in layers. The first layer represents the power supply lines on this side, the second layer represents the opening points, and the third layer represents the power supply lines on the opposite side. Text information is labeled to the right of the graphic elements. The height and width of the graphic elements and text labels need to be calculated to ensure even distribution of graphics and text on the topology diagram. Each device element on the diagram can be located on the geographic map, and simplified electrical lines can also be located across stations to find the shortest path on the geographic map. The simplified diagram in this embodiment is as follows: Figure 21 As shown.

[0106] The standard feeder system single-line diagram automatically iterates and adds elements starting from the feeder outgoing switch, following the minimum system island. It retains key elements such as substation equipment, line switching equipment, branches, pole transformers and users, and important operating poles. The main line direction is determined, and the layout is extended according to horizontal and vertical rules, with automatic labeling. The diagram is aesthetically pleasing and includes all key graphic elements. The standard feeder system single-line diagram in this embodiment is as follows: Figure 22 As shown.

[0107] The algorithms used in the rule-based single-line diagram include minimum electrical system island simplification, grid obstacle avoidance, station building series extension layout, small equipment group supplementation, and automatic annotation algorithm.

[0108] In-situ balanced feeder electrical system single-line diagram: This diagram falls between a regular electrical system single-line diagram and a geographic electrical system single-line diagram. The coordinates of the graphic elements are close to their geographical locations. The equipment mapping follows the mapping specifications and orthogonalization process of a regular electrical system single-line diagram, and a certain degree of layout balancing has been implemented. The graphic is relatively regular, and all key graphic elements are complete. The balanced feeder electrical system single-line diagram in this embodiment is as follows: Figure 23 As shown.

[0109] Feeder Geographic Power System Single-Line Map: Based on the power system equipment on this side, data is extracted from the geographic map to form a separate geographic power system single-line map, similar to the generation principle of the geographic power system map, and the outgoing lines on the opposite side are marked. This map's layout is consistent with the geographic... Figure 1 To achieve the desired effect, no simplifications are made; the graphic elements are presented in their most complete form. The feeder geographic electrical system single-line diagram in this embodiment is as follows: Figure 24 As shown.

[0110] Extracted Feeder System Single-Line Diagram: Based on the results of the opening point analysis, the current feeder elements are extracted from the existing conventional large-scale power system diagram. This type of diagram relies on the existing conventional large-scale power system diagram, and its advantage is that it conforms to the original routing and layout of the conventional power system diagram, extracting only the target feeder. Operational personnel are familiar with interpreting the diagram and scheduling routes. The feeder geographic power system single-line diagram in this embodiment is as follows: Figure 25 As shown.

[0111] In another specific embodiment, the method further includes: when generating the visualization diagram, an operable flashing point is displayed at each opening point, and when an operation command is obtained for the flashing point, an expanded local ring network diagram on the opposite side is automatically generated.

[0112] In practice, daily power distribution management often involves work on feeders on opposite sides, such as planned power outages, load transfers, and emergency repairs. Therefore, expanding the feeders on the opposite side of the opening point is crucial. Based on the current feeder, expanding the feeders on the opposite side to form a local ring network diagram is highly beneficial for personnel to clearly understand the local power grid situation. Specifically, this embodiment uses an "opening flashing point" attached to the opening point, continuously flashing to indicate its location. Double-clicking the "opening flashing point" allows for easy and quick automatic generation of the opposite feeders, using different colors to color the expanded feeders, one color for each feeder, resulting in very clear feeder boundaries. The local ring network diagram of this embodiment is shown below. Figure 26 As shown.

[0113] If the above methods are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a 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 described in the various embodiments of this 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.

[0114] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An open point based assisted analysis graph automatic visualization method for switching, characterized in that, The method comprises the following steps: An operation point is obtained, and a selection device is determined according to the position of the operation point; A possible opening point list is searched based on the selection device, and a real opening point list is obtained by screening from the possible opening point list, the opening point being a line side opening device with two charged ends and in a separated state; Six kinds of visualized graphs are generated according to the real opening point list; The screening to obtain the real opening point list from the possible opening point list comprises: For each possible opening point in the possible opening point list, opposite side feeder line analysis is performed to determine whether the opposite side power supply side can be traced to the transformer substation outgoing line from the other terminal of the possible opening point, and if yes, the possible opening point is added to the real opening point list as a real opening point.

2. The method of claim 1, wherein, The searching to obtain the possible opening point list based on the selection device specifically comprises: A local side feeder line search is performed on the side where the selection device is located, including a breadth search and a depth search, to trace to the transformer substation outgoing line, search for the opening device separated at the edge of the feeder line, and form the possible opening point list.

3. The method of claim 1 or 2, wherein, In the searching process, a screening and filtering condition is superimposed, and the opening point meeting the screening and filtering condition is deleted from the list.

4. The method of claim 3, wherein, The screening and filtering condition is that there is a screening device on the search path.

5. The method of claim 4, wherein, The screening device comprises multiple devices such as double-sided fuses, double-sided pole load switches, same busbars, same transformer substations and N-stage switch station sectional switches.

6. The method of claim 1, wherein, The visualized graphs comprise basic graphs, opening point topology graphs, regularized power system single-line graphs, original ground balance type power system single-line graphs, geographical power system single-line graphs and extracted feeder power system single-line graphs. The basic graph is a power system graph or a geographical graph. The topology graph is a graph formed by omitting intermediate connection devices and directly pointing from the local side power supply outgoing line to the opposite side power supply outgoing line through the opening point, and the load summary information of each feeder line and the information of the opening point are labeled in the graph by words. The regularized power system single-line graph is formed by starting from the feeder outgoing line switch, automatically iterating and adding according to the minimum power system island, retaining the in-station devices, the opening devices on the line, the branches, the pole transformers and the users, the important operating poles, determining the main line direction, extending and arranging according to the rule of horizontal and vertical, and completing automatic labeling. The original ground balance type power system single-line graph is between the regularized power system single-line graph and the geographical power system single-line graph, the coordinates of the graph elements in the graph are close to the geographical positions, the device mapping is according to the mapping specification and orthogonalization processing of the regularized power system single-line graph, and the layout is balanced. The geographical power system single-line graph is formed by extracting data from the geographical graph according to the local side power system devices, and the opposite side outgoing line is indicated in the graph. The extracted feeder power system single-line graph is formed by extracting the current feeder graph elements from the existing conventional large power system graph according to the analysis result of the opening point.

7. The method of claim 6, wherein the method further comprises: The basic graph prompts the feeder line by one of highlighting, changing color and flickering.

8. The method of claim 1, wherein the method further comprises: The method further comprises: When the visualized graph is generated, a flickering point operable at each opening point is displayed, and when an operation instruction for the flickering point is obtained, a local looped network graph is automatically expanded.

9. A computer-readable storage medium, characterized in that, including one or more programs for execution by one or more processors of an electronic device, the one or more programs including instructions for performing the method of claim 1-8.

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