Electric field distribution abnormity processing method and device, computer, storage medium and program product

Abstract

The invention discloses an electric field distribution abnormity processing method and device, a computer, a storage medium and a program product. The method comprises the following steps: constructing an electric field simulation model according to a high-voltage site plane layout diagram and a cross-section diagram in a transformer substation; constructing an ideal wire clamp model and an actual wire clamp model according to the T-joint corner wire clamp drawing and the actual measurement data; determining an electric field distribution abnormal area according to the electric field simulation model, the ideal wire clamp model and the actual wire clamp model; and determining a target processing measure according to the electric field abnormal region, wherein the target processing measure is used for adjusting the electric field distribution abnormal region into an electric field distribution normal region. The electric field simulation calculation model is established, the surface electric field intensity of the ideal wire clamp model and the surface electric field intensity of the actual wire clamp model are compared and calculated to determine the electric field distribution abnormal area and the abnormal reason, then the target treatment measure is determined according to the electric field abnormal area, and the efficiency of solving the electric field distribution abnormity is improved.

Description

Technical Field

[0001] The present application relates to the field of power transformation technology, and in particular to a method, device, computer, storage medium and program product for processing abnormal electric field distribution. Background Art

[0002] During the grid-connection process of the gas-insulated metal-enclosed switchgear (HGIS) in high-voltage open-type substations after bay expansion, abnormal electric field distribution often occurs at the double-split T-connected corner line at the top of the HGIS bushing.

[0003] The existing solution is to use the equalizing ring shielding technology, which sets a equalizing ring on the upper end of the original HGIS casing. The equalizing ring is a metal ring structure made of conductive material, usually located inside the insulator string, and forms a closed loop around the conductor. The electric field distribution of the T-connection corner line is improved by adding the equalizing ring, but this solution cannot accurately adjust the uneven electric field around the T-connection corner line, and the efficiency of solving the abnormal electric field distribution is low. Summary of the invention

[0004] The embodiments of the present application provide a method, device, computer, storage medium and program product for processing electric field distribution anomalies. By establishing an electric field simulation calculation model, the surface electric field strength of an ideal wire clamp model and an actual wire clamp model is compared and calculated to determine the abnormal electric field distribution area and the cause of the anomaly. Then, target processing measures are determined according to the abnormal electric field area, which is beneficial to improving the efficiency of solving the abnormal electric field distribution.

[0005] In a first aspect, an embodiment of the present application provides a method for processing an abnormal electric field distribution, the method comprising:

[0006] constructing an electric field simulation model according to the high voltage site plan layout diagram in the substation and the cross-sectional diagram;

[0007] Construct ideal clamp model and actual clamp model according to T-joint corner clamp drawing and actual measurement data;

[0008] Determine an abnormal area of ​​electric field distribution according to the electric field simulation model, the ideal wire clamp model and the actual wire clamp model;

[0009] A target processing measure is determined according to the abnormal electric field area, and the target processing measure is used to adjust the abnormal electric field distribution area to a normal electric field distribution area.

[0010] In a second aspect, an embodiment of the present application provides a device for processing abnormal electric field distribution, the device comprising:

[0011] A construction module, for constructing an electric field simulation model according to the high-voltage site plan layout and the cross-sectional view in the substation; and for constructing an ideal wire clamp model and an actual wire clamp model according to the T-connection angle wire clamp drawing and actual measurement data;

[0012] A determination module is used to determine the abnormal electric field distribution area according to the electric field simulation model, the ideal wire clamp model and the actual wire clamp model; and to determine the target processing measures according to the abnormal electric field area, wherein the target processing measures are used to adjust the abnormal electric field distribution area to the normal electric field distribution area.

[0013] In a third aspect, an embodiment of the present application provides a computer, including:

[0014] A memory, a processor, and an electric field distribution anomaly processing program stored in the memory and executable on the processor, wherein the electric field distribution anomaly processing program is configured to implement part or all of the steps described in any method in the first aspect.

[0015] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which an electric field distribution anomaly handling program is stored. When the electric field distribution anomaly handling program is executed by a processor, part or all of the steps described in any method in the first aspect are implemented.

[0016] In a fifth aspect, an embodiment of the present application provides a computer program product, wherein the computer program product includes a computer program, and the computer program is operable to cause a computer to execute some or all of the steps described in any method of the first aspect of the embodiment of the present application. The computer program product can be a software installation package.

[0017] By implementing the embodiments of the present application, firstly, an electric field simulation model is constructed according to the high-voltage site plan layout and the cross-sectional view in the substation; then, an ideal wire clamp model and an actual wire clamp model are constructed according to the T-connection angle wire clamp drawing and actual measurement data; then, the abnormal electric field distribution area is determined according to the electric field simulation model, the ideal wire clamp model and the actual wire clamp model; finally, target processing measures are determined according to the abnormal electric field area, and the target processing measures are used to adjust the abnormal electric field distribution area to a normal electric field distribution area. By establishing an electric field simulation calculation model, comparing and calculating the surface electric field strength of the ideal wire clamp model and the actual wire clamp model to determine the abnormal electric field distribution area and the abnormal cause, and then determining the target processing measures according to the abnormal electric field area, it is beneficial to improve the efficiency of solving the abnormal electric field distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0019] Figure 1 It is a schematic diagram of the architecture of an electric field distribution anomaly processing system provided in an embodiment of the present application;

[0020] Figure 2 It is a flow chart of a method for handling abnormal electric field distribution provided in an embodiment of the present application;

[0021] Figure 3 It is a schematic diagram of a double-split T-joint corner wire clamp model provided in an embodiment of the present application;

[0022] Figure 4 is a schematic diagram of an ideal wire clamp model provided in an embodiment of the present application;

[0023] Figure 5 is a schematic diagram of an actual wire clamp model provided in an embodiment of the present application;

[0024] Figure 6 is a schematic diagram of electric field distribution of an ideal wire clamp model provided in an embodiment of the present application;

[0025] Figure 7 is a schematic diagram of electric field distribution of an actual wire clamp model provided in an embodiment of the present application;

[0026] Figure 8 It is a schematic diagram of the electric field distribution of a voltage grading ring and a wire clamp after adding a top shielding ring provided in an embodiment of the present solution;

[0027] Fig. 9 It is a schematic diagram of a voltage equalizing ring provided by an embodiment of the present application after adding a top shielding ring;

[0028] Fig.10 It is a structural schematic diagram of an electric field distribution anomaly processing device provided in an embodiment of the present application;

[0029] Fig.11 It is a structural diagram of a computer provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. According to the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0031] The terms "first", "second", "third", etc. in the specification, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0032] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] During the grid-connection process of the gas-insulated metal-enclosed switchgear (HGIS) in high-voltage open-type substations after bay expansion, abnormal electric field distribution often occurs at the double-split T-connected corner line at the top of the HGIS bushing.

[0034] The existing solution is to use the equalizing ring shielding technology, which sets a equalizing ring on the upper end of the original HGIS casing. The equalizing ring is a metal ring structure made of conductive material, usually located inside the insulator string, and forms a closed loop around the conductor. The electric field distribution of the T-connection corner line is improved by adding the equalizing ring, but this solution cannot accurately adjust the uneven electric field around the T-connection corner line, and the efficiency of solving the abnormal electric field distribution is low.

[0035] In response to the above problems, the embodiments of the present application provide a method, device, equipment, storage medium and program product for handling abnormal electric field distribution. First, an electric field simulation model is constructed based on the high-voltage site plan layout and the cross-sectional view in the substation; then, an ideal wire clamp model and an actual wire clamp model are constructed based on the T-connection angle wire clamp drawing and actual measurement data; then, the abnormal electric field distribution area is determined based on the electric field simulation model, the ideal wire clamp model and the actual wire clamp model; finally, target processing measures are determined based on the abnormal electric field area, and the target processing measures are used to adjust the abnormal electric field distribution area to a normal electric field distribution area. By establishing an electric field simulation calculation model, comparing and calculating the surface electric field strength of the ideal wire clamp model and the actual wire clamp model to determine the abnormal electric field distribution area and the abnormal cause, and then determining the target processing measures based on the abnormal electric field area, it is beneficial to improve the efficiency of solving the abnormal electric field distribution.

[0036] The electric field distribution anomaly processing method, device, equipment, storage medium and program product provided in the embodiments of the present application can be applied to Figure 1 In the electric field distribution anomaly treatment system shown in Figure 1 , Figure 1 It is a schematic diagram of the architecture of an electric field distribution anomaly processing system provided in an embodiment of the present application. The electric field distribution anomaly processing system 100 includes a terminal 101 and a server 102. The terminal 101 can communicate with the server 102 through a network. The terminal 101 refers to a device used by a user, such as a smart phone, a computer, etc. In this solution, the terminal 101 provides an interface for the user to interact with the electric field distribution anomaly processing system 100. The user can upload the high-voltage site plan layout, cross-sectional view, T-connection corner wire clamp drawings and actual measurement data and other related information in the substation through the terminal 101, and can also view the results of the electric field simulation model, the ideal wire clamp model, the actual wire clamp model, and the electric field distribution abnormal area. The terminal 101 also provides the selection and adjustment function of the target processing measures, allowing the user to determine the target processing measures for adjusting the electric field distribution abnormal area. The server 102 refers to a remote computer used to process a large number of computing tasks and store data. In this solution, the server 102 is responsible for building an electric field simulation model based on the high-voltage site plan and cross-sectional view in the substation uploaded by the terminal 101, and building an ideal clamp model and an actual clamp model in combination with the T-connection angle clamp drawing and actual measurement data. The server 102 uses these models to determine the abnormal area of ​​the electric field distribution and adjust the abnormal area to a normal area according to the target treatment measures. In addition, the server 102 is responsible for storing and managing all relevant data to ensure the stability and security of the system.

[0037] Based on this, the present application provides a method, device, equipment, storage medium and program product for processing electric field distribution anomalies. The present application is described in detail below in conjunction with the accompanying drawings.

[0038] See also Figure 2 , Figure 2 is a flow chart of a method for handling abnormal electric field distribution provided in an embodiment of the present application, such as Figure 2 As shown, the method comprises the following steps:

[0039] S201, constructing an electric field simulation model according to the high-voltage site plan layout diagram in the substation and the cross-sectional diagram.

[0040] Among them, the high-voltage site plan is a schematic diagram that draws the various equipment in the substation (such as transformers, switchgear, etc.) in a certain proportion in the horizontal direction. The high-voltage site plan shows the relative position, connection method, and line direction of the various equipment in the substation. The cross-sectional view refers to the cross-sectional schematic diagram observed after the substation is cut from the vertical direction. The cross-sectional view shows the distribution of equipment at different levels or positions in the substation, including equipment size, installation location, and connection method. The electric field simulation model is the result of modeling and simulation analysis of the actual high-voltage site using computer technology. The electric field simulation model is based on the parameters and geometric shape data provided in the high-voltage site plan and cross-sectional view, and uses numerical calculation methods to simulate and predict the potential distribution in the entire area under given conditions.

[0041] Among them, building an electric field simulation model includes the following steps: first, obtain the high-voltage site plan layout and cross-sectional view in the substation. The high-voltage site plan layout and cross-sectional view can be paper or electronic, containing information such as the location of the equipment, connection method, and line direction. Then, according to the actual situation, determine the boundary conditions that need to be considered in the simulation model, such as grounding conditions, conductor type, etc. At the same time, set material parameters, such as the relative dielectric constant of the insulating medium. Then, according to the information provided by the high-voltage site plan layout and cross-sectional view, draw a geometric model in the simulation software, draw each device in proportion in two-dimensional space, and ensure that its position and size are consistent with the actual. Finally, use the simulation software to construct an electric field simulation model for calculation. By solving physical equations such as Maxwell's equations, the potential distribution and electric field strength at different points can be obtained.

[0042] For example, the double-split T-connection angle wire clamp of the casing is taken as the research object, and the electric field distribution of each hardware surface at the top of the casing is calculated. Among them, the modeling and simulation focus on the relevant factors that affect the electric field distribution of the wire clamp. Specifically, the relevant factors include the structural size, apparent state, installation location, operating environment, and the distance between the surrounding adjacent live equipment (for example: pole tower, jumper, and the top of the adjacent HGIS). It is completely modeled in detail based on the actual object, and the factors that have little effect on the electric field distribution are fuzzy fitted.

[0043] Among them, see Figure 3 , Figure 3 is a schematic diagram of a double-split T-joint corner wire clamp model provided in an embodiment of the present application, such as Figure 3As shown, the model of the T-connected double-split angle clamp is SSY-1600NC-400 (200x300), and the wire model is 2×JNRLH1 K-1600. The terminal board is 30mm thick, 200mm wide, and extends 220mm beyond the equalizing ring. The center diameter of the HGIS casing equalizing ring is 500mm, the pipe diameter is 100mm, and the distance between the two rings is 310mm. The top of the double-split T-connected angle clamp is composed of a 75mm diameter C-shaped elbow and a 100mm diameter angle welded together, and the top of the double-split T-connected angle clamp extends 350mm beyond the equalizing ring.

[0044] Among them, a single bay finite element electric field simulation calculation model is established based on the substation plan, switch bay cross-section diagram, and double-split T-connection angle clamp drawings. Based on engineering experience and the mutual shielding relationship between electrodes, the internal structure of HGIS, gantry V-type insulator string, bushing shed, adjacent bays, etc. are simplified to simplify the calculation model while meeting the calculation accuracy requirements.

[0045] S202: construct an ideal wire clamp model and an actual wire clamp model according to the T-joint corner wire clamp drawing and actual measurement data.

[0046] Among them, the focus of the electric field simulation calculation is on the double-split T-connection corner clamp. Detailed modeling of this position can obtain the ideal clamp model and the actual clamp model.

[0047] In a possible implementation, the step of constructing an ideal wire clamp model and an actual wire clamp model according to the T-joint corner wire clamp drawing and actual measurement data includes:

[0048] An ideal wire clamp model is constructed according to the T-joint corner wire clamp drawing using three-dimensional modeling software; the ideal wire clamp model is adjusted according to the actual measurement data to obtain an actual wire clamp model.

[0049] The steps of constructing the ideal wire clamp model and the actual wire clamp model are as follows: obtain the design drawings of the T-joint angle wire clamp, which can be paper or electronic, determine the material parameters used in the ideal wire clamp model according to the design requirements, such as conductor material, insulation material, etc., and then draw the three-dimensional model of the ideal wire clamp in the simulation software according to the geometric shape and size information provided by the T-joint angle wire clamp drawings to obtain the ideal wire clamp model. At the same time, conduct on-site measurements, record the geometric shape and size information of the actual wire clamp and the material parameters used by the actual wire clamp, and redraw the three-dimensional model of the actual wire clamp in the simulation software to obtain the actual wire clamp model.

[0050] The simulation software may be AutoCAD, SolidWorks, CATIA, Creo Parametric, Blender and other software, and there is no restriction on the simulation software here.

[0051] Specifically, see Figure 4 and Figure 5 , Figure 4 is a schematic diagram of an ideal wire clamp model provided in an embodiment of the present application, Figure 5 is a schematic diagram of an actual wire clamp model provided in an embodiment of the present application, such as Figure 4 and Figure 5 As shown, the corner welding part structure of the actual wire clamp model of the double-split T-joint corner wire clamp is a hexagonal prism, the corner welding part structure of the ideal wire clamp model is a cylinder, and the welding ends of the actual wire clamp model are truncated cone structures, so the edge curvature of the actual wire clamp model is larger than that of the ideal wire clamp model.

[0052] It can be seen that in this example, the 3D modeling software is used to construct the ideal wire clamp model according to the T-joint corner wire clamp drawing, and then the ideal wire clamp model is adjusted according to the actual measurement data to obtain the actual wire clamp model, which is beneficial to improve the accuracy of the constructed wire clamp model; at the same time, the 3D modeling software can display the constructed ideal wire clamp model and the actual wire clamp model in the form of images, which is conducive to visual display.

[0053] S203, determining an abnormal area of ​​electric field distribution according to the electric field simulation model, the ideal wire clamp model and the actual wire clamp model.

[0054] Among them, after constructing the ideal wire clamp model and the actual wire clamp model, the electric field analysis of the ideal wire clamp model and the actual wire clamp model is performed through the electric field simulation model, and the calculation results of the ideal wire clamp model and the actual wire clamp model at the same point are compared, and their differences are evaluated. For example, if it is found that the electric field intensity or potential distribution of the actual wire clamp model is significantly higher than that of the ideal wire clamp model at certain positions, and the difference exceeds the set threshold, the area with the difference is determined to be an abnormal area.

[0055] In a possible implementation, determining the abnormal electric field distribution area according to the electric field simulation model, the ideal wire clamp model, and the actual wire clamp model includes:

[0056] The first electric field distribution of the ideal wire clamp model is determined according to the electric field simulation model and the ideal wire clamp model; the second electric field distribution of the actual wire clamp model is determined according to the electric field simulation model and the actual wire clamp model; and the abnormal electric field distribution area is determined by comparing the first electric field distribution with the second electric field distribution.

[0057] Among them, the loading boundary conditions of each device in the simulation calculation model are based on the actual operating conditions of each device in the 500kV substation, and the three-phase loading voltage in the substation is defined as: Ua, Ub, Uc. When simulating the surface electric field of the double-split T-connected angle clamp of the A-phase bushing, the highest operating phase voltage peak of the A-phase loading system is 449.018kV, and the highest operating phase voltage peak of the B-phase and C-phase loading systems is half of the negative peak of the A-phase, that is,

[0058] Among them, see Figure 6 and Figure 7 , Figure 6 is a schematic diagram of electric field distribution of an ideal wire clamp model provided in an embodiment of the present application, Figure 7 is a schematic diagram of the electric field distribution of an actual wire clamp model provided in an embodiment of the present application, such as Figure 6 and Figure 7 As shown, the ideal wire clamp model is used to calculate the electric field strength on the surface of the hardware at the upper end of the bushing through the three-phase voltage peak loading scheme. The unit of electric field strength is kV / mm. The corners of the double-split T-connected corner clamp and the edge curvature of the corner welding part are large, and the surface electric field is concentrated. The maximum electric field strength value on the surface of the double-split T-connected corner clamp is 2.6kV / mm, and the maximum electric field strength value on the outer edge of the corner welding tail is 3.2kV / mm, which exceeds the field strength control value of 2kV / mm. The maximum electric field strength values ​​on the upper and lower grading rings are 1.87kV / mm and 1.74kV / mm, respectively, which meet the field strength control value of 2kV / mm for the substation hardware. The actual wire clamp model is used to calculate the electric field strength on the surface of the hardware at the upper end of the bushing through the three-phase voltage peak loading scheme. The actual double-split T-connection corner clamp model has a hexagonal prism structure in the center of the corner welding part, and the tail forms a truncated cone with thin sides and thick middle. The equivalent curvature of the tail edge is larger than that of the ideal model, and the surface field strength is higher. The maximum electric field strength at the edge of the truncated cone is 4kV / mm. In addition, the maximum electric field strength at the corner of the double-split T-connection corner clamp is 2.6kV / mm, which exceeds the field strength control value of 2kV / mm. The maximum electric field strength values ​​of the upper and lower grading rings are 1.88kV / mm and 1.74kV / mm, respectively, which meet the field strength control value of 2kV / mm for substation hardware.

[0059] It can be seen that in this example, in this scheme, the abnormal area is determined by comparing the different electric field distribution results obtained by the ideal wire clamp model and the actual wire clamp model in the simulation environment, which is conducive to quickly determining the abnormal electric field distribution area and facilitating subsequent analysis of the abnormal electric field distribution area.

[0060] S204, determining target processing measures according to the abnormal electric field area.

[0061] The target processing measure is used to adjust the abnormal electric field distribution area to a normal electric field distribution area.

[0062] In a possible implementation, determining a target treatment measure according to the abnormal electric field area includes:

[0063] The abnormal cause of the abnormal electric field area is determined by finite element analysis; and the target treatment measures are determined according to the abnormal cause.

[0064] Among them, Finite Element Analysis (FEA) is a numerical calculation method used to solve the mathematical models of continuous medium mechanics and other physical problems. It converts complex practical engineering problems into discrete finite elements and obtains approximate solutions to the problems by approximating and solving these elements. Specifically, the steps of finite element analysis are as follows:

[0065] Establish a geometric model. According to the actual engineering problem, use CAD software or other modeling tools to create a three-dimensional model that accurately describes the system's geometry, size, and boundary conditions. The geometric model can include structures, fluids, or electric fields. Meshing. Divide the geometric model into many small units, called finite elements. Different types of finite elements, such as linear, triangular, quadrilateral, or hexahedron, can be used to deal with various types of problems. Meshing determines the accuracy and efficiency of the calculation results. Define material properties. Define the characteristic parameters of the material used in the corresponding area in each finite element, such as elastic coefficient, density, thermal conductivity, etc. These parameters can be determined based on experimental data or known standard values. Set boundary conditions. Set the correct boundary conditions for the model and define the loading conditions, such as force, temperature, etc. Boundary conditions may include constraints, applied loads or pressures, and temperature gradients. Solve equations. Based on the selected material properties and applied loading conditions, establish a set of equations on each finite element and use numerical methods to discretize them. Among them, a common method is to use the Galerkin method to generate a stiffness matrix and iteratively solve a sparse linear system of equations to obtain results such as displacement, stress, or field variables.

[0066] It can be seen that in this example, the finite element analysis method is adopted, and the continuous structure is discretized into a finite number of units using numerical methods. Then, each unit is calculated and solved, so that the electric field distribution of the system can be obtained, which is conducive to accurately locating the abnormal electric field area and finding out the specific cause of the abnormality.

[0067] In a possible implementation, the determining the abnormal cause of the abnormal electric field region by finite element analysis includes:

[0068] Numerical calculations are performed on the abnormal electric field area through finite element analysis and the electric field simulation model to obtain multiple physical quantities of the abnormal electric field area; the abnormal physical quantities are determined by comparing the multiple physical quantities of the abnormal electric field area with the multiple physical quantities of the normal electric field area; and the abnormal cause of the abnormal electric field area is determined based on the abnormal physical quantities.

[0069] Among them, several important physical quantities can be selected for comparison in the normal area and the abnormal area, such as electric field strength, potential, charge density, etc. By comparing the differences of these physical quantities in the two areas, the abnormal physical quantities can be determined, and then the abnormal reasons for the abnormal electric field area can be determined based on the abnormal physical quantities.

[0070] For example, by comparison, it is found that the electric field strength in the abnormal area is significantly higher than that in the normal area, and there is an obvious local charge concentration phenomenon, which may indicate that the abnormality is caused by leakage caused by aging or damage of local insulating materials.

[0071] For example, since the surface of the hardware of the actual T-joint corner wire clamp is rough and there are weld lines on the outer edge of the corner weld, a rectangular weld line with a length of 9mm, a width of 4mm, a height of 0.5mm, and a top radius of 0.3mm was established on the outer edge of the corner weld of the double-split T-joint corner wire clamp to conduct finite element analysis. The radius of curvature of the weld line at the corner weld of the wire clamp is extremely small, and the electric field distortion is serious. The maximum electric field on the surface of the wire clamp is 9.08kV / mm, which is much higher than the electric field strength of 4kV / mm when there is no weld line. Therefore, when there are weld lines on the surface of the double-split T-joint corner wire clamp, corona discharge is more likely to occur. It is determined that the cause of the corona discharge phenomenon of the T-joint corner wire clamp is that the uneven electric field causes the local field strength to be too high.

[0072] It can be seen that in this example, through numerical calculation, multiple physical quantities of the electric field abnormal area, such as electric field strength, potential, charge density, etc., can be obtained. Then, by comparing multiple physical quantities in the normal area and the abnormal area, the specific physical quantity where the abnormality occurs can be identified, which is conducive to quickly determining the electric field abnormal area.

[0073] In a possible implementation, determining a target processing measure according to the abnormal cause includes:

[0074] It is detected that the abnormal reason for the abnormal electric field area is that the uneven electric field of the T-joint corner clamp causes the local field strength to be too high. The target processing measures are determined to be polishing and wiping the surface of the T-joint corner clamp, and / or installing a shielding ring on the top of the T-joint corner clamp.

[0075] Among them, it is determined that the abnormal cause of the abnormal electric field area is that the uneven electric field of the T-joint corner clamp causes the local field strength to be too high. In view of the corona discharge phenomenon at the corner welding part of the double-split T-joint corner clamp, it is necessary to improve the surface characteristics of the hardware. The surface can be made as smooth as possible by grinding and wiping. In addition, the structure of the equalizing ring on the top of the HGIS casing can also be optimized.

[0076] Specifically, the structural optimization method of the pressure equalizing ring at the top of the HGIS casing is to install a shielding ring on the top of the line clamp, see Fig. 9 , Fig. 9 is a schematic diagram of a voltage equalizing ring with a top shielding ring added provided in an embodiment of the present application, such as Fig. 9 As shown in the figure, the shielding ring on the top of the voltage-equalizing ring has a diameter of 120mm, a center diameter of 800mm, and a distance of 610mm from the original voltage-equalizing ring. This ensures that the wire clamp is within the shielding range of the shielding ring, effectively reducing and improving the surface electric field of the double-split T-connection corner wire clamp.

[0077] Among them, see Figure 8 , Figure 8 Schematic diagram of the electric field distribution of a voltage grading ring and a wire clamp after adding a top shielding ring provided in the embodiment of the present solution, such as Figure 8 As shown in the figure, after the voltage-equalizing ring is modified and equipped with a top shielding ring, the analysis is continued based on the single-interval finite element simulation calculation model, and the model is loaded with the three-phase voltage peak value to calculate the surface electric field intensity of the top hardware of the bushing at the A-phase potential peak. At this time, the corner welding part and the corner of the double-split T-connected corner wire clamp are shielded by the top shielding ring, and the surface electric field is greatly reduced. At this time, the maximum electric field intensity value of the corner welding part is 0.85kV / mm, and the maximum electric field intensity value at the corner is 0.75kV / mm, which is much lower than the corona initiation field intensity. When there are weld lines in the corner welding part, the weld lines are also shielded by the top shielding ring, and the maximum surface electric field intensity is only 2.1kV / mm, which is lower than the corona initiation field intensity. In addition, the maximum electric field intensity value of the shielding ring surface is 1.92kV / mm, and the maximum electric field intensity values ​​of the upper and lower voltage-equalizing ring surfaces are 1.38kV / mm and 1.55kV / mm, respectively, which meet the substation hardware field intensity control value of 2kV / mm.

[0078] It can be seen that in this embodiment, it is clear that the reason why the T-joint corner wire clamp produces corona discharge is when the uneven electric field causes the local field strength to be too high. By improving the apparent characteristics of the hardware and adding a shielding ring on the basis of the original voltage-equalizing ring, the electric field strength around the wire clamp is improved. After implementation, the electric field around the wire clamp is much lower than the corona initiation field strength, and the shielding ring has a good shielding effect.

[0079] In a possible implementation, the method further includes:

[0080] When the abnormal electric field distribution area is detected, a first prompt message is sent, wherein the first prompt message is used to inform the user of the abnormal electric field distribution area, the cause of the abnormal electric field distribution area, and target processing measures.

[0081] The first prompt information is sent to the user via email, text message, mobile application push notification, online platform message, and phone notification, and the first prompt information may be text information or graphic information.

[0082] Among them, the user can set in advance the sending channel or method of the first prompt information corresponding to different abnormal areas or abnormal reasons. For example, the user can set the abnormal reason to be aging of insulating materials, and the first prompt information is sent via SMS, and the first prompt information is a pure text message.

[0083] For example, when monitoring the electric field distribution of a switchgear in a substation, finite element analysis found that a local area A had a high electric field strength and obvious local discharge. At this time, the first prompt message is sent, which is: "Dear user, after analyzing the substation switchgear, it was found that the equipment you manage has the following problems: abnormal area A is located near the switchgear. The abnormality is caused by leakage due to aging of the nearby insulating materials. In order to solve this problem, please take the following target processing measures: Check whether the nearby insulating materials are damaged, cracked or contaminated. If necessary, please replace or repair the affected parts in time."

[0084] It can be seen that in this example, by sending detailed first prompt information to users, they can quickly understand the abnormal area and its cause, and guide them to take corresponding treatment measures to solve the problem.

[0085] See also Fig.10 , Fig.10 is a schematic diagram of the structure of an electric field distribution anomaly processing device provided in an embodiment of the present application, such as Fig.10 As shown, the electric field distribution abnormality processing device 1000 includes:

[0086] The construction module 1001 is used to construct an electric field simulation model according to the high-voltage site plan layout and the cross-sectional view in the substation; and to construct an ideal wire clamp model and an actual wire clamp model according to the T-connection angle wire clamp drawing and actual measurement data;

[0087] The determination module 1002 is used to determine the abnormal electric field distribution area according to the electric field simulation model, the ideal wire clamp model and the actual wire clamp model; and to determine the target processing measures according to the abnormal electric field area, and the target processing measures are used to adjust the abnormal electric field distribution area to the normal electric field distribution area.

[0088] In one possible implementation, in terms of constructing an ideal wire clamp model and an actual wire clamp model based on T-joint corner wire clamp drawings and actual measurement data, the construction module 1001 is specifically used to: use three-dimensional modeling software to construct an ideal wire clamp model based on the T-joint corner wire clamp drawings; adjust the ideal wire clamp model based on the actual measurement data to obtain the actual wire clamp model.

[0089] In one possible implementation, in terms of obtaining a pre-trained first question-answering model based on question-answering training data, the construction module 1001 is specifically used to: obtain question-answering training data by combining push information and question-answering information, wherein the push information includes push background information, push process information, and push object information; and perform supervised fine-tuning training on the initial question-answering model based on the question-answering training data to obtain a first question-answering model.

[0090] In one possible implementation, in terms of determining the abnormal electric field distribution area based on the electric field simulation model, the ideal wire clamp model and the actual wire clamp model, the determination module 1002 is specifically used to: determine the first electric field distribution of the ideal wire clamp model based on the electric field simulation model and the ideal wire clamp model; determine the second electric field distribution of the actual wire clamp model based on the electric field simulation model and the actual wire clamp model; and determine the abnormal electric field distribution area by comparing the first electric field distribution with the second electric field distribution.

[0091] In a possible implementation, in terms of determining target processing measures according to the abnormal electric field area, the determination module 1002 is specifically used to: determine the abnormal cause of the abnormal electric field area through finite element analysis; and determine the target processing measures according to the abnormal cause.

[0092] In a possible implementation, in terms of determining the abnormal cause of the abnormal electric field area through finite element analysis, the determination module 1002 is specifically used to: perform numerical calculations on the abnormal electric field area through finite element analysis and the electric field simulation model to obtain multiple physical quantities of the abnormal electric field area; determine the abnormal physical quantity by comparing the multiple physical quantities of the abnormal electric field area with the multiple physical quantities of the normal electric field area; and determine the abnormal cause of the abnormal electric field area based on the abnormal physical quantity.

[0093] In one possible implementation, in terms of determining the target processing measures based on the cause of the abnormality, the determination module 1002 is specifically used to: detect that the cause of the abnormal electric field abnormal area is that the uneven electric field of the T-joint corner clamp causes the local field strength to be too high, determine the target processing measures to be polishing and wiping the surface of the T-joint corner clamp, and / or, install a shielding ring on the top of the T-joint corner clamp.

[0094] In a possible implementation, the determination module 1002 is also used to: upon detecting the existence of the abnormal electric field distribution area, send a first prompt message, wherein the first prompt message is used to inform the user of the abnormal electric field distribution area, the cause of the abnormal electric field distribution area, and target processing measures.

[0095] It is worth noting that the specific functional implementation of the electric field distribution abnormality processing device 1000 can be found in the above Figure 1 The description of the method for handling anomaly in electric field distribution shown in the figure, for example, the construction module 1001 is used to implement the relevant contents of executing S201-S202, and the determination module 1002 is used to implement the relevant contents of executing S203-S204. Each unit or module in the device for handling anomaly in electric field distribution 1000 can be respectively or completely combined into one or several other units or modules to constitute, or one (some) of the units or modules can also be further divided into multiple smaller units or modules in function to constitute, which can achieve the same operation without affecting the realization of the technical effect of the embodiment of the present invention. The above-mentioned units or modules are divided according to logical functions. In practical applications, the function of one unit (or module) is realized by multiple units (or modules), or the function of multiple units (or modules) is realized by one unit (or module).

[0096] According to the description of the above method embodiment and related device embodiment, please refer to Fig.11 , Fig.11 It is a structural diagram of a computer 1100 provided in an embodiment of the present application. Fig.11 The computer 1100 shown includes a processor 1101, a memory 1102, a communication interface 1103 and a bus 1104. The processor 1101, the memory 1102 and the communication interface 1103 are connected to each other through the bus 1104.

[0097] Optionally, the memory 1102 is a ROM, a static storage device, a dynamic storage device or a RAM.

[0098] The memory 1102 can store executable program codes. When the executable program codes stored in the memory 1102 are executed by the processor 1101, the processor 1101 and the communication interface 1103 are used to execute the executable program codes. Figure 2 The various steps of the method for handling abnormal electric field distribution in the illustrated embodiment.

[0099] The processor 1101 adopts a general CPU, a microprocessor, an application-specific integrated circuit ASIC, a GPU or one or more integrated circuits to execute relevant programs to execute the electric field distribution anomaly processing method of the method embodiment of the present application.

[0100] The processor 1101 can also be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the electric field distribution anomaly processing method of the present application can be completed by the hardware integrated logic circuit or software instructions in the processor 1101. Optionally, the processor 1101 is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component. The processor can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor is a microprocessor or the processor is any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application can be directly embodied as a hardware decoding processor to execute, or the hardware and software modules in the decoding processor are combined and executed. The optional software module is located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register or other mature storage media in the art. The storage medium is located in the memory 1102, and the processor 1101 reads the information in the memory 1102, and combines its hardware to complete the functions required to be executed by the modules included in an electric field distribution anomaly processing device 1000 of an embodiment of the present application, or executes the electric field distribution anomaly processing method of the method embodiment of the present application.

[0101] The communication interface 1103 uses a transceiver or other related device such as, but not limited to, a transceiver.

[0102] The bus 1104 may include a path for transmitting information between various components of the computer 1100 (eg, the memory 1102 , the processor 1101 , and the communication interface 1103 ).

[0103] It should be noted that although Fig.11 The computer 1100 shown only shows a memory, a processor, and a communication interface, but in the specific implementation process, those skilled in the art should understand that the computer 1100 also includes other devices necessary for normal operation. At the same time, according to specific needs, those skilled in the art should understand that the computer 1100 may also include hardware devices for implementing other additional functions. In addition, those skilled in the art should understand that the computer 1100 may also include only the devices necessary for implementing the embodiments of the present application, and does not necessarily include Fig.11 All devices shown in .

[0104] An embodiment of the present application provides a computer-readable storage medium, in which a computer program for electronic data exchange is stored. The computer program includes execution instructions, and the execution instructions are used to execute part or all of the steps of any one of the electric field distribution anomaly processing methods recorded in the above-mentioned electric field distribution anomaly processing method embodiments. The above-mentioned computer includes an electronic terminal device.

[0105] An embodiment of the present application provides a computer program product, wherein the computer program product includes a computer program, and the computer program can be operated to enable a computer to perform part or all of the steps of any one of the electric field distribution anomaly processing methods recorded in the above method embodiments. The computer program product can be a software installation package.

[0106] It should be noted that, for the sake of simplicity, for any of the aforementioned embodiments of the method for handling abnormal electric field distribution, they are all described as a series of action combinations, but those skilled in the art should be aware that this application is not limited by the described order of actions, because according to this application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by this application.

[0107] The above is a detailed introduction to the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application's method, device, equipment, storage medium and program product for handling anomalies in electric field distribution. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, based on the idea of ​​the present application's method, device, equipment, storage medium and program product for handling anomalies in electric field distribution, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

[0108] The present application is described with reference to the flowcharts and / or block diagrams of the methods, hardware products, and computer program products of the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0109] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1The memory may include: a flash disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0110] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art may understand and implement other variations of the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude multiple situations. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0111] A person skilled in the art can understand that all or part of the steps in the various methods of any of the above-mentioned methods for handling anomaly in electric field distribution can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable memory, and the memory can include: a flash drive, a read-only memory (English: Read-Only Memory, abbreviated as: ROM), a random access memory (English: Random Access Memory, abbreviated as: RAM), a disk or an optical disk, etc.

[0112] It can be understood that any product that is controlled or configured to execute the processing method of the flowchart described in an embodiment of an electric field distribution anomaly processing method of the present application, such as the device and computer program product of the above flowchart, falls within the scope of the related products described in the present application.

[0113] Obviously, those skilled in the art can make various changes and modifications to the electric field distribution anomaly processing method, device, equipment, storage medium and program product provided by the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

1. A method for processing abnormal electric field distribution, characterized in that: The method comprises: constructing an electric field simulation model according to the high voltage site plan layout diagram in the substation and the cross-sectional diagram; Construct ideal clamp model and actual clamp model according to T-joint corner clamp drawing and actual measurement data; Determine an abnormal area of ​​electric field distribution according to the electric field simulation model, the ideal wire clamp model and the actual wire clamp model; A target processing measure is determined according to the abnormal electric field area, and the target processing measure is used to adjust the abnormal electric field distribution area to a normal electric field distribution area.

2. The method according to claim 1, characterized in that The method of constructing an ideal wire clamp model and an actual wire clamp model according to the T-joint corner wire clamp drawing and actual measurement data includes: Use 3D modeling software to build an ideal wire clamp model based on the T-joint corner wire clamp drawing; The ideal wire clamp model is adjusted according to the actual measurement data to obtain an actual wire clamp model.

3. The method according to claim 1, characterized in that The determining of the abnormal electric field distribution area according to the electric field simulation model, the ideal wire clamp model and the actual wire clamp model includes: Determine a first electric field distribution of the ideal wire clamp model according to the electric field simulation model and the ideal wire clamp model; Determine a second electric field distribution of the actual wire clamp model according to the electric field simulation model and the actual wire clamp model; The abnormal electric field distribution area is determined by comparing the first electric field distribution and the second electric field distribution.

4. The method according to claim 1, characterized in that The step of determining target processing measures according to the abnormal electric field area includes: Determine the abnormal cause of the abnormal electric field region by finite element analysis; Determine the target treatment measures based on the cause of the abnormality.

5. The method according to claim 4, characterized in that The determining of the abnormal cause of the abnormal electric field region by finite element analysis includes: Performing numerical calculation on the abnormal electric field region through finite element analysis and the electric field simulation model to obtain multiple physical quantities of the abnormal electric field region; Determining the abnormal physical quantity by comparing the multiple physical quantities in the abnormal electric field region with the multiple physical quantities in the normal electric field region; The abnormal cause of the abnormal electric field region is determined based on the abnormal physical quantity.

6. The method according to claim 4, characterized in that Determining a target processing measure according to the abnormal cause includes: It is detected that the abnormal reason for the abnormal electric field area is that the uneven electric field of the T-joint corner clamp causes the local field strength to be too high. The target processing measures are determined to be polishing and wiping the surface of the T-joint corner clamp, and / or installing a shielding ring on the top of the T-joint corner clamp.

7. The method according to any one of claims 1 to 6, characterized in that: The method further comprises: When the abnormal electric field distribution area is detected, a first prompt message is sent, wherein the first prompt message is used to inform the user of the abnormal electric field distribution area, the cause of the abnormal electric field distribution area, and target processing measures.

8. A device for processing abnormal electric field distribution, characterized in that: The device comprises: A construction module, for constructing an electric field simulation model according to the high-voltage site plan layout and the cross-sectional view in the substation; and for constructing an ideal wire clamp model and an actual wire clamp model according to the T-connection angle wire clamp drawing and actual measurement data; A determination module is used to determine the abnormal electric field distribution area according to the electric field simulation model, the ideal wire clamp model and the actual wire clamp model; and to determine the target processing measures according to the abnormal electric field area, wherein the target processing measures are used to adjust the abnormal electric field distribution area to the normal electric field distribution area.

9. A computer, characterized in that: The computer comprises: A memory, a processor, and an executable program code stored in the memory and executable on the processor, wherein the processor executes the steps of the method for handling abnormal electric field distribution according to any one of claims 1 to 7 when executing the executable program code.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores an electric field distribution anomaly processing program, and the electric field distribution anomaly processing program includes execution instructions, and the execution instructions are used to execute the steps of the electric field distribution anomaly processing method according to any one of claims 1 to 7.

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