Ground wire positioning method, medium and system based on one graph of power grid

Abstract

The invention discloses a grounding wire positioning method, medium and system based on a graph of a power grid, and the method comprises the steps: taking the graph of the power grid as a basis, and constructing a mathematical model for hanging a grounding wire in a topological structure of the power grid in advance; the method comprises the following steps: acquiring operation information, and inputting the operation information into a pre-constructed mathematical model to generate information of a grounding wire needing to be hooked, specifically, determining an overhaul tower: analyzing a tower Tj needing to be overhauled from the input operation information; searching for adjacent power transmission lines: traversing the power transmission line set L, and finding out all power transmission lines connected with the tower Tj; determining grounding wire hanging positions: according to safety regulations and maintenance requirements of a power grid, determining positions where grounding wires need to be hung; and generating ground wire information: generating the ground wire information to be hooked, wherein the ground wire information comprises a hooked tower, a position and a state. According to the invention, the operation efficiency and safety can be obviously improved.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of power grids, and in particular to a grounding wire positioning method, medium and system based on a power grid map. Background Art

[0002] A grid map is an important carrier for mapping the physical grid in digital space. It is the basic support for the digitalization of grid production, operation and business operations. It can visualize the relationship between grid equipment and safety protection equipment. The grounding wire is the lifeline and a safety short-circuit device to prevent power failure and harm to power equipment and operators. Equipment perception transmits real-time data on the status of grid equipment and safety protection equipment to ensure timely discovery of problems. Artificial intelligence algorithm analysis can realize the relationship between equipment and safety tools during grid maintenance, issue early warnings for violations of safety regulations, and form a safety protection system.

[0003] As safety management and control requirements become increasingly stringent, on-site safety inspections are evolving towards preventing safety issues in advance. Establishing the relationships between power grid equipment and the locations of safety protection equipment on a power grid map and using artificial intelligence algorithms to reflect problems where these relationships violate safety agreements is an important step in realizing a new type of power grid.

[0004] The increase in the proportion of new energy in the construction of new power systems and the widespread access to power electronic equipment have made the operation of the power grid complex, and there are problems such as data dispersion in the business management of power grid companies. In order to solve these problems, the concept of "one map for the power grid" is proposed. With the rapid development of distributed power sources and the large-scale access of energy storage and control devices, the power grid structure is becoming more and more complex, and the interweaving of the main and distribution networks is becoming increasingly apparent. "One map for the power grid" calculates key operating indicators of large power grids online, evaluates power grid security risks in real time, and can effectively support the safe and reliable operation of large power grids. For example, in extreme weather conditions, relying on the static topology of one map of the power grid, integrating the operating data of equipment such as the measurement center, accurate fault analysis and command operations can be achieved, helping to improve the efficiency of emergency repairs. It provides a strong guarantee for the safe and stable operation of large power grids.

[0005] When performing power outage maintenance in the power system, ground wires must be connected at each end of the work area and on the branch lines that may supply power to the power outage line. In power grid operations, connecting ground wires is an important measure to ensure the safety of workers and prevent accidental electric shock. Traditional methods rely on manual on-site inspections, judgments and operations, which are not only inefficient, but also prone to misjudgment or omissions due to human factors, increasing operational risks. With the development of smart grid technology, how to use digital means to optimize operating processes and improve risk management has become an urgent problem to be solved.

[0006] For a long time, grounding wires, as important tools for safety protection, still use the traditional management model, relying on the operator's record on the record sheet, and the use of the work site is the responsibility of the person in charge of the work, who must fill out the work ticket. The registration of grounding wires in and out of the warehouse is cumbersome, and it is impossible to remotely monitor the connection status of grounding wires at the construction site, which is a blind spot in power equipment management and construction supervision. Once there are many work sites, the management personnel lack real-time information on the site, and the management of grounding wires is in a blind spot. Frequent use of grounding wires can easily lead to the phenomenon of wrong hanging and removal, missing hanging and missing removal, and then cause malicious misoperation incidents such as power transmission with grounding wires, which seriously threatens personal safety and the stability of power grid operation. Summary of the invention

[0007] In view of the technical problems existing in the prior art, the present invention provides a grounding wire positioning method, medium and system based on a power grid map to improve operating efficiency and safety.

[0008] In order to solve the above technical problems, the technical solution proposed by the present invention is:

[0009] A method for locating a ground wire based on a power grid map comprises the following steps:

[0010] Based on a diagram of the power grid, a mathematical model for grounding wires in the power grid topology is pre-built;

[0011] Obtain operation information and input it into the pre-built mathematical model to generate the grounding wire information that needs to be hung, specifically:

[0012] Determine the tower to be repaired: Analyze the input operation information to determine the tower T that needs to be repaired j ;

[0013] Find adjacent transmission lines: traverse the transmission line set L and find the adjacent transmission lines to the tower T. j All connected transmission lines;

[0014] Determine the location of the ground wire: According to the safety regulations and maintenance requirements of the power grid, determine where the ground wire needs to be hung;

[0015] Generate grounding wire information: Generate the grounding wire information that needs to be hung, including the hanging pole tower, location and status.

[0016] Preferably, when constructing a mathematical model of the grounding wire in the power grid topology, each element of the power grid is defined and its position is described.

[0017] Preferably, the definition of each element of the power grid specifically includes:

[0018] Substation: represented by a set S, where S i represents the i-th substation, i∈N *;

[0019] Transmission towers: represented by a set T, where T j represents the jth transmission tower, j∈N * ;

[0020] Distributed power generation: represented by a set D, where D i Represents the i-th distributed generation, connected to the grid through a transmission line, i∈N * ;

[0021] Transmission lines: represented by a set L, where L k represents the kth transmission line connected to the substation or tower, k∈N * , the transmission line can be represented by an ordered pair (a, b), where a, b∈S∪T∪D, representing the two endpoints connected by the line;

[0022] Grounding wire: represented by a set G, where G m Represents the mth ground wire, m∈N * The grounding wire is represented as a triple (t, p, s), where t∈T represents the mounted tower, p represents the mounting position, and s represents the state of the grounding wire.

[0023] Preferably, the positions of the elements of the power grid are described as follows:

[0024] For substations and towers, two-dimensional coordinates (x, y) are used to describe their geographical locations or relative coordinates are used to describe their locations in the grid topology.

[0025] For transmission lines, the coordinates of the start and end points are used to describe their direction;

[0026] For the ground wire, in addition to describing the coordinates of the tower to which it is mounted, the specific location p of the mounting is also described and refined through additional parameters.

[0027] Preferably, when determining the position of the hanging ground wire, determine whether the distance between each candidate point and the target point, the angle between the line connecting the candidate point and the target point and the positive x-axis, and the relative angle between the line connecting the candidate point and the target point and a reference direction meet the constraints; and use the candidate point that meets the above constraints as the final hanging ground wire position.

[0028] Preferably, when the final location of the grounding wire is obtained, the coordinate information of the grounding wire is updated in a map of the power grid.

[0029] Preferably, each candidate point is a pole tower, and the target point is the position of the grounding wire in a map of the power grid.

[0030] The present invention also discloses a computer program product, comprising a computer program, wherein the computer program executes the steps of the method described above when executed by a processor.

[0031] The present invention further discloses a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the method described above are executed.

[0032] The present invention also discloses a grounding wire positioning system based on a power grid map, comprising a memory and a processor connected to each other, wherein a computer program is stored in the memory, and when the computer program is run by the processor, the steps of the method described above are executed.

[0033] Compared with the prior art, the advantages of the present invention are:

[0034] The present invention establishes a regional power grid topology model based on a power grid map. After inputting basic information such as the work content and work area through a human-computer interaction interface, an artificial intelligence algorithm is used to conduct a comprehensive analysis of the input work information and the power grid topology structure. According to the analysis results, potential risk points for electric shock and specific locations where grounding wires need to be hung are intelligently identified and intuitively displayed in a power grid map, thereby significantly improving work efficiency and safety.

[0035] The present invention graphically displays the analysis results in a grid map, marking the locations where ground wires need to be connected; it also provides interactive functions, allowing operators to view detailed information, such as ground wire type, recommended connection method, etc.; it supports the generation of operation instructions and ground wire connection task lists for easy on-site execution; and finally, based on the full verification and feedback mechanism, before connecting the ground wire, the system verifies to ensure that the selected location meets safety regulations to avoid misoperation. After the operation is completed, on-site feedback is collected, and the algorithm model is continuously optimized to improve the accuracy of the analysis and judgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of a power grid diagram of the present invention.

[0037] Figure 2 The figure is a flow chart of a positioning method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0039] like Figure 1-Figure 2 As shown, the grounding wire positioning method based on a power grid map according to an embodiment of the present invention includes the following steps:

[0040] Based on a diagram of the power grid, a mathematical model for grounding wires in the power grid topology is pre-built;

[0041] Obtain operation information and input it into the pre-built mathematical model to generate the grounding wire information that needs to be hung, specifically:

[0042] Determine the tower to be repaired: Analyze the input operation information to determine the tower T that needs to be repaired j ;

[0043] Find adjacent transmission lines: traverse the transmission line set L and find the adjacent transmission lines to the tower T. j All connected transmission lines;

[0044] Determine the location of the ground wire: According to the safety regulations and maintenance requirements of the power grid, determine where the ground wire needs to be hung; this usually requires considering the transmission lines on both sides of the maintenance tower and the substations and distributed power sources that may be involved;

[0045] Generate grounding wire information: Generate the grounding wire information that needs to be hung, including the hanging pole tower, location and status.

[0046] Specifically, when a mathematical model of grounding wires in a power grid topology is pre-built, the elements of the power grid are defined and their positions are described. Specifically: Definition of power grid elements:

[0047] Substation: It is represented by a set S, where S i represents the i-th substation, i∈N * ;

[0048] Transmission tower: represented by a set T, where T j represents the jth transmission tower, j∈N * ;

[0049] Distributed Resources: represented by a set D, where D i Represents the i-th distributed generation, connected to the grid through a transmission line, i∈N * ;

[0050] Transmission line (Line): represented by a set L, where L k represents the kth transmission line connected to the substation or tower, k∈N * , the transmission line can be represented by an ordered pair (a, b), where a, b∈S∪T∪D, representing the two endpoints connected by the line;

[0051] Grounding Line: It is represented by a set G, where G m Represents the mth ground wire, m∈N *The grounding wire can be represented as a triple (t, p, s), where t∈T represents the mounted tower, p represents the mounting position (such as a certain side of the tower or a certain height), and s represents the state of the grounding wire (such as mounted, not mounted, etc.).

[0052] Specifically, the location description:

[0053] For substations and towers, two-dimensional coordinates (x, y) can be used to describe their geographical locations, or relative coordinates can be used to describe their locations in the power grid topology.

[0054] For a transmission line, its direction can be described using the coordinates of the start and end points;

[0055] For the ground wire, in addition to describing the coordinates of the tower to which it is mounted, it is also necessary to describe the specific location p of the mounting, which can be refined by additional parameters (such as height, direction, etc.);

[0056] For example: Substation S1 coordinates (x1, y1), tower T2 coordinates (x2, y2) and substation S1 through transmission line L1 = (S 1, Grounding wire G1 = (T2, left side, already connected) means that a grounding wire has been connected to the left side of tower T2.

[0057] Specifically, the operation information includes: if a certain tower needs to be repaired, it can be expressed as: tower repair information (T j , maintenance), where T j Indicates towers that require maintenance.

[0058] Specifically, the specific process of determining the location of the grounding wire is as follows:

[0059] 1. Input data

[0060] Target point coordinates: Given a target point (the location information of the grounding wire in a power grid map), its coordinates are (x0, y0);

[0061] Candidate point set: Provide a set of candidate points (the towers near the grounding line), the coordinates of each candidate point are (xi,yi), where i = 1,2,...,n;

[0062] Distance threshold d: Set a distance threshold to filter candidate points within a certain range from the target point;

[0063] Direction range (θmin, θmax): Set a direction range to filter candidate points in a specific direction. The direction is expressed as the angle between the line connecting the target point and the positive x-axis, with the counterclockwise direction being positive.

[0064] Angle range (αmin, αmax): Set an angle range to filter candidate points whose angles with the target point are within a specific range.

[0065] 2. Calculate distance

[0066] For each candidate point (xi, yi), calculate the Euclidean distance di between it and the target point (x0, y0), the formula is: di = √((xi-x0)^2+(yi-y0)^2);

[0067] 3. Determine distance constraints

[0068] The calculated distance di is compared with the set distance threshold d; if di≤d, the candidate point meets the distance constraint and proceeds to the next step of judgment; otherwise, the candidate point is excluded.

[0069] 4. Calculate the direction angle

[0070] For candidate points that meet the distance constraint, calculate the angle θi between the line connecting the candidate point and the target point and the positive x-axis. The formula is: θi = arctan2(yi-y0,xi-x0); where arctan2 is the inverse tangent function, which can return the correct angle value, including quadrant information.

[0071] 5. Determine direction constraints

[0072] The calculated angle θi is compared with the set direction range (θmin, θmax); if θmin≤θi≤θmax, the candidate point meets the direction constraint and proceeds to the next step of judgment; otherwise, the candidate point is excluded.

[0073] 6. Calculate the angle of the line connecting the target point

[0074] For candidate points that meet the distance and direction constraints, the relative angle αi between the line connecting the candidate point and the target point and a reference direction (such as the positive x-axis) is calculated. This angle can be defined and calculated according to actual needs.

[0075] 7. Determine angle constraints

[0076] The calculated relative angle αi is compared with the set angle range (αmin, αmax); if αmin≤αi≤αmax, the candidate point meets the angle constraint and is retained as the final screening result; otherwise, the candidate point is excluded.

[0077] 8. Output results

[0078] Output the coordinates of all candidate points (towers) that meet the distance, direction and angle constraints;

[0079] 9. In a power grid map, the coordinate information of the grounding wire is updated to the coordinate information of the selected candidate points (towers).

[0080] In specific applications, it is assumed that the input tower maintenance information (T j , maintenance), the positioning process is as follows:

[0081] 1. Determine the tower to be inspected as T2;

[0082] 2. Find the transmission line connected to T2 and find L1=(S 1, T2) and L2=(T 2, T3);

[0083] 3. According to safety regulations, it was decided to hang ground wires on both sides of T2, namely G1 = (left side of T2, to be hung) and G1 = (left side of T2, to be hung);

[0084] 4. Generate grounding wire information and add it to the grounding wire set G.

[0085] The present invention establishes a regional power grid topology model based on a power grid map. After inputting basic information such as the work content and work area through a human-computer interaction interface, an artificial intelligence algorithm is used to conduct a comprehensive analysis of the input work information and the power grid topology structure. According to the analysis results, potential risk points for electric shock and specific locations where grounding wires need to be hung are intelligently identified and intuitively displayed in a power grid map, thereby significantly improving work efficiency and safety.

[0086] The present invention graphically displays the analysis results in a grid map, marking the locations where ground wires need to be connected; it also provides interactive functions, allowing operators to view detailed information, such as ground wire type, recommended connection method, etc.; it supports the generation of operation instructions and ground wire connection task lists for easy on-site execution; and finally, based on the full verification and feedback mechanism, before connecting the ground wire, the system verifies to ensure that the selected location meets safety regulations to avoid misoperation. After the operation is completed, on-site feedback is collected, and the algorithm model is continuously optimized to improve the accuracy of the analysis and judgment.

[0087] The model of the present invention can determine the location where the ground wire needs to be hung by defining the grid elements and their positional relationships, combined with the input operation information. The model can be further expanded and optimized to adapt to more complex grid structures and maintenance needs; at the same time, for the convenience and accuracy in practical applications, the ground wire involved in the present invention has been digitally transformed, and can be combined with the geographic information system (GIS) and power system software for positioning and visual analysis.

[0088] The present invention also discloses a computer program product, including a computer program, which executes the steps of the above method when executed by a processor. The present invention further discloses a computer-readable storage medium, on which a computer program is stored, which executes the steps of the above method when executed by a processor. The present invention also discloses a grounding wire positioning system based on a power grid map, including a memory and a processor connected to each other, on which a computer program is stored, which executes the steps of the above method when executed by a processor. The product, medium and system of the present invention correspond to the above method and also have the advantages described in the above method.

[0089] The present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by hardware related to computer program instructions. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned method embodiment when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. Computer-readable storage media include: any entity or device that can carry computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium. The memory is used to store computer programs and / or modules, and the processor implements various functions by running or executing computer programs and / or modules stored in the memory, and calling data stored in the memory. The memory may include high-speed random access memory and may also include non-volatile memory, such as a hard disk, an internal memory, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0090] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims

1. A grounding wire positioning method based on a power grid map, characterized in that: The following steps are involved: Based on a diagram of the power grid, a mathematical model for grounding wires in the power grid topology is pre-built; Obtain operation information and input it into the pre-built mathematical model to generate the grounding wire information that needs to be hung. The specific process is as follows: Determine the tower to be repaired: Analyze the input operation information to determine the tower T that needs to be repaired j ; Find adjacent transmission lines: traverse the transmission line set L and find the adjacent transmission lines to the tower T. j All connected transmission lines; Determine the location of the ground wire: According to the safety regulations and maintenance requirements of the power grid, determine where the ground wire needs to be hung; Generate grounding wire information: Generate the grounding wire information that needs to be hung, including the hanging pole tower, location and status.

2. The method for locating ground wires based on a power grid map according to claim 1, characterized in that: When constructing a mathematical model of grounding wires in a power grid topology, each element of the power grid is defined and its position is described.

3. The method for locating ground wires based on a power grid map according to claim 2, characterized in that: The definition of each element of the power grid includes: Substation: represented by a set S, where S i represents the i-th substation, i∈N * ; Transmission towers: represented by a set T, where T j represents the jth transmission tower, j∈N * ; Distributed power generation: represented by a set D, where D i Represents the i-th distributed generation, connected to the grid through a transmission line, i∈N * ; Transmission lines: represented by a set L, where L k represents the kth transmission line connected to the substation or tower, k∈N * , the transmission line can be represented by an ordered pair (a, b), where a, b∈S∪T∪D, representing the two endpoints connected by the line; Grounding wire: represented by a set G, where G m Represents the mth ground wire, m∈N * The grounding wire is represented as a triplet (t, p, s), where t∈T represents the mounted tower, p represents the mounting position, and s represents the state of the grounding wire.

4. The method for locating ground wires based on a power grid map according to claim 2, characterized in that: The positions of the elements of the power grid are described as: For substations and towers, two-dimensional coordinates (x, y) are used to describe their geographical locations or relative coordinates are used to describe their locations in the grid topology. For transmission lines, the coordinates of the start and end points are used to describe their direction; For the ground wire, in addition to describing the coordinates of the tower to which it is mounted, the specific location p of the mounting is also described and refined through additional parameters.

5. The method for locating a ground wire based on a power grid map according to any one of claims 1 to 4, characterized in that: When determining the location of the hanging ground wire, determine whether the distance between each candidate point and the target point, the angle between the line connecting the candidate point and the target point and the positive x-axis, and the relative angle between the line connecting the candidate point and the target point and a reference direction meet the constraints; the candidate point that meets the above constraints is used as the final location of the hanging ground wire.

6. The method for locating ground wires based on a power grid map according to claim 5, characterized in that: When the final location of the grounding wire is obtained, the coordinate information of the grounding wire is updated in a power grid map.

7. The method for locating ground wires based on a power grid map according to claim 5, characterized in that: Each candidate point is a pole tower, and the target point is the position of the grounding wire in a map of the power grid.

8. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are performed.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the computer program performs the steps of the method according to any one of claims 1 to 7.

10. A grounding wire locating system based on a power grid map, comprising a memory and a processor connected to each other, wherein a computer program is stored in the memory, characterized in that: When the computer program is executed by a processor, the computer program performs the steps of the method according to any one of claims 1 to 7.

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