Application method and device of transformer substation flexible bus construction blanking length calculation tool

Abstract

The invention discloses an application method and device of a transformer substation flexible bus construction blanking length calculation tool, and relates to the technical field of power systems. According to the main technical scheme, a flexible busbar construction blanking length calculation tool is set up in advance, a software setting window, a parameter setting window and a result processing window are provided on a main interface of the tool, and then an ANSYS application program path input by the software setting window is utilized to calculate the blanking length of flexible busbar construction. According to the method, the flexible busbar construction blanking length can be automatically output by embedding an executive program capable of realizing a simulation analysis model and processing by utilizing the executive program according to blanking parameter information and design constraint information input on a parameter setting window, and the output is visually presented on a result processing window. The method is automatic and convenient for users to use, the flexible bus construction blanking length meeting the working condition precision requirement is obtained, and greater safety guarantee is brought to the future operation management work of a transformer substation.

Description

Technical Field

[0001] The present application relates to the technical field of power systems, and in particular to an application method and device for a tool for calculating the cutting length of a substation soft busbar during construction. Background Art

[0002] In the primary system of substation, flexible busbar is widely used due to its flexible layout and simple operation and maintenance. The process quality of flexible busbar directly affects the safety level of daily operation and maintenance of substation. At the same time, sag is increasingly valued as an important control indicator of flexible conductor installation accuracy.

[0003] Nowadays, overhead conductors in stations generally have the characteristics of long and heavy metal insulator strings, short spans, small sag, and considerable height difference between hanging points on both sides. If such factors are not carefully considered, it will inevitably have a significant impact on the accuracy of sag measurement and deployment.

[0004] However, some construction workers make mistakes in cutting materials based on vague empirical formulas during the installation of such soft busbars, and frequently ignore the inherent connection between conductor sag and tension (too little sag increases conductor tension, while too much sag affects the safety distance), which ultimately causes the conductor or hardware, structure and other components to bear additional stress, reducing the safety distance to the ground, thus bringing major safety hazards to the future operation and management of the substation. Therefore, how to effectively determine the cutting length of soft busbar construction is a technical problem that needs to be solved urgently. Summary of the invention

[0005] In view of this, the present application provides an application method and device for a tool for calculating the cutting length of a substation soft busbar construction. The main purpose is to use automated simulation calculations to determine the cutting length of the soft busbar construction, which not only meets the accuracy requirements but also provides more convenient operation.

[0006] In order to achieve the above objectives, this application mainly provides the following technical solutions:

[0007] In a first aspect, the present application provides an application method of a tool for calculating the length of a substation soft busbar during construction, wherein the windows designed on the main interface of the tool at least include a software setting window, a parameter setting window, and a result processing window, and the method comprises:

[0008] Entering the ANSYS application path in the software setting window, the ANSYS application is an execution program based on the simulation analysis model of the soft busbar construction blanking length pre-established by ANSYS;

[0009] Inputting blanking parameter information and design constraint information in the parameter setting window, wherein the dimensions of the blanking parameter information at least include: cross-line hanging point information, soft busbar material property information, and hardware insulator string property information; the design constraint information at least includes: sag constraint information and precision constraint index;

[0010] After starting the tool, the ANSYS application is called according to the path to process the parameter information and the design constraint information, and the soft busbar construction cutting length is output on the result processing window.

[0011] The second aspect of the present application provides an application device for a tool for calculating the length of a substation soft busbar for construction, wherein the windows designed on the main interface of the tool at least include a software setting window, a parameter setting window and a result processing window, and the device includes:

[0012] A first input unit is used to input an ANSYS application path in the software setting window, wherein the ANSYS application is an execution program based on a simulation analysis model of the soft busbar construction blanking length pre-established by ANSYS;

[0013] A second input unit is used to input blanking parameter information and design constraint information in the parameter setting window, wherein the dimensions of the blanking parameter information at least include: cross-line hanging point information, soft busbar material property information, and hardware insulator string property information; the design constraint information at least includes: sag constraint information and precision constraint index;

[0014] A calling unit, configured to call the ANSYS application program to process the parameter information and the design constraint information according to the path after starting the tool;

[0015] The third input unit is used to output the cutting length of the soft busbar construction on the result processing window.

[0016] A third aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the application method of the substation soft busbar construction cutting length calculation tool as described above is implemented.

[0017] The fourth aspect of the present application provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the application method of the tool for calculating the cutting length for construction of a substation soft busbar as described above.

[0018] By means of the above technical solution, the technical solution provided by this application has at least the following advantages:

[0019] The present application provides an application method and device for a tool for calculating the cutting length of a substation soft busbar construction. The present application pre-builds a tool for calculating the cutting length of a soft busbar construction, and provides a software setting window, a parameter setting window and a result processing window on the main interface of the tool. Then, the ANSYS application path input in the software setting window is used, which is equivalent to nesting an execution program that can realize a simulation analysis model, and according to the cutting parameter information and design constraint information input in the parameter setting window, the cutting length of the soft busbar construction can be automatically output by processing using such an execution program, and the output is visualized in the result processing window.

[0020] Compared with the technical problem mentioned in the prior art that incorrect cutting is caused by manual calculation based on experience, the present application utilizes such a soft busbar construction cutting length calculation tool to realize automatic output of the cutting length. In addition, since the parameter setting window allows users to input specific information and specific constraint information according to actual working conditions, the solution provided by the present application is not only automated and convenient for users to use, but also obtains the soft busbar construction cutting length that meets the working condition accuracy requirements, bringing greater security to the future operation and management of the substation.

[0021] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0023] Figure 1 A flow chart of an application method of a tool for calculating the length of a flexible busbar for substation construction provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of a main interface of a tool provided in an embodiment of the present application;

[0025] Figure 3 A schematic diagram of the working principle of a tool provided in an embodiment of the present application;

[0026] Figure 4 The node coordinate system, outline and two-node positions of the LINK10 unit provided in the embodiment of the present application;

[0027] Figure 5A schematic diagram of constructing a simulation calculation process in a simulation analysis model for the blanking length of a soft busbar construction provided in an embodiment of the present application;

[0028] Figure 6 A schematic diagram of another simulation calculation process of blanking length provided in an embodiment of the present application;

[0029] Figure 7 A schematic diagram of the corresponding crimped wire of the tension clamp hardware exemplified in the embodiment of the present application;

[0030] Figure 8 A block diagram of the composition of an application device for a substation soft busbar construction cutting length calculation tool provided in an embodiment of the present application;

[0031] Fig. 9 A block diagram of the composition of another application device of a tool for calculating the cutting length for substation flexible busbar construction provided in an embodiment of the present application. DETAILED DESCRIPTION

[0032] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0033] The cutting length of the substation soft busbar refers to the length consisting of the wire feeding length and the outer package size. Usually, the calculation of the cutting length is based on the measured span, theoretical calculation, and measured hardware and insulator strings. A commonly used empirical formula is L1=L-2L0+△L, where L1 is the wire cutting length, L is the measured span, L0 is a certain fixed length (such as the length occupied by hardware, insulator strings, etc.), and △L is the calculated release, which takes into account the busbar design sag, the measured span, and the actual hardware, porcelain bottles, wires, and span release of the busbar on site.

[0034] However, the inventors have discovered through research that, in actual working conditions, overhead conductors within stations generally have the characteristics of long and heavy metal insulator strings, short spans, small sag, and considerable height differences between hanging points on both sides. If such factors are not carefully considered, it will inevitably have a significant impact on the accuracy of sag measurement and deployment.

[0035] In addition, some construction workers rely on vague empirical formulas to cut materials incorrectly during the installation of such soft busbars, and frequently ignore the intrinsic connection between conductor sag and tension (too little sag increases conductor tension, while too much sag affects the safety distance). This ultimately causes the conductors or hardware, structures and other components to bear additional stress, reducing the safety distance to the ground, thus posing a major safety hazard to the future operation and management of the substation.

[0036] Based on the above considerations, the present application embodiment provides an application method of a substation soft busbar construction cutting length calculation tool, such as Figure 1 As shown, the method is automated and more accurate in obtaining the length of the material for the construction of a soft busbar, and the embodiment of the present application provides the following specific steps:

[0037] 101. Enter the ANSYS application path in the software setting window. The ANSYS application is an execution program based on the simulation analysis model of the soft busbar construction cutting length pre-established by ANSYS.

[0038] The embodiment of the present application pre-builds a substation soft busbar construction cutting length calculation tool, and the main interface of the tool is designed to include at least: a software setting window, a parameter setting window and a result processing window.

[0039] Among them, the software setting window is mainly used to support the input of the application path, so as to realize the call of the specified application to assist the tool to realize the corresponding functions required. For example, the embodiment of the present application is to input the ANSYS application path, and the ANSYS application is an execution program based on the soft busbar construction cutting length simulation analysis model pre-established by ANSYS.

[0040] ANSYS software can integrate the analysis of multiple physical fields such as structure, fluid, electric field, magnetic field, acoustic field, etc. to provide users with comprehensive simulation solutions. The embodiment of the present application utilizes the parametric design language (hereinafter referred to as APDL) that comes with ANSYS software itself, and uses APDL to complete the entire process of soft busbar finite element analysis (such as geometric model establishment, meshing, loading solution, result extraction and processing), to pre-establish the execution program of the soft busbar construction cutting length simulation analysis model (that is, the "ANSYS application" referred to in the embodiment of the present application), thereby realizing the nesting of the "ANSYS soft busbar construction cutting length calculation process" into the tool.

[0041] 102. Input the cutting parameter information and design constraint information in the parameter setting window. The dimensions of the cutting parameter information include at least: cross-line hanging point information, soft busbar material property information, and hardware insulator string property information; the design constraint information includes at least: sag constraint information and accuracy constraint index.

[0042] The construction technology of the soft busbar requires that the sag value specified in the design must be met after it is in place, and the lowest point of the three-phase busbar must be on the same horizontal line. The factors that affect the accuracy of the establishment of the simulation model of the associated soft busbar and the calculation results of the sag and cutting length are at least: the height difference on both sides of the cross-line hanging point, the hanging point spacing, the weight and length of the hardware insulator string, the material properties of the soft busbar (weight per meter, cross-sectional area, elastic modulus, Poisson's ratio), the distance between the tail end of the steel core and the steel anchor hanging hole, and the crimping extension increment.

[0043] The embodiment of the present application provides a parameter setting window to the user, so that the user can input parameter information of influencing factors related to the "soft busbar construction cutting length" according to different working conditions, and also supports the user to input sag constraint information and accuracy constraint indicators, so that the results of this simulation analysis call meet the specified constraint requirements.

[0044] 103. After starting the tool, call the ANSYS application according to the path to process the parameter information and design constraint information, and output the soft busbar construction cutting length in the result processing window.

[0045] On the main interface of the tool in the embodiment of the present application, a result processing window is also provided for visually displaying the result data obtained when the tool is started to execute the simulation calculation process. The software setting window, parameter setting window and result processing window on the main interface of the tool are used to not only realize automated simulation calculation, but also realize secondary development according to the data information input by the user, so as to meet the requirements of different actual working conditions and different actual accuracy constraints.

[0046] As described above, the embodiment of the present application provides an application method of a tool for calculating the cutting length for construction of a substation soft busbar. Compared with the technical problem mentioned in the prior art of manual calculation based on experience leading to erroneous cutting, the present application utilizes such a tool for calculating the cutting length for construction of a soft busbar to realize automatic output of the cutting length. In addition, since the parameter setting window allows users to input specific information and specific constraint information according to actual working conditions, the solution provided by the present application is not only automated and convenient for users to use, but also can obtain the cutting length for construction of the soft busbar that meets the working condition accuracy requirements, thereby bringing greater security to the future operation and management of the substation.

[0047] Example 1, such as Figure 2 As shown, the embodiment of the present application provides a schematic diagram of the main interface on a tool, and on such a tool, such as Figure 3 , the embodiment of the present application also provides a schematic diagram of the working principle of a tool.

[0048] exist Figure 3In the embodiment of the present application, a computer programming language is used to draw the main interface, compile the ANSYS working directory, working name and other information (that is, applicable to actual working conditions), define variables, convert them into APDL language, and establish an interface for calling the ANSYS application, thereby using ANSYS to automatically run the solution and retain the result file. For such a result file, it can be visualized through the result processing window.

[0049] Below, in the embodiments of the present application, for the ANSYS application, it is an execution program for the simulation analysis model of the length of material cut for construction of the soft busbar based on the ANSYS pre-established. In some specific embodiments, the embodiments of the present application provide a detailed explanation of the construction of the simulation calculation process in the simulation analysis model of the length of material cut for construction of the soft busbar, including the following:

[0050] (1) Software and unit type selection;

[0051] Among the many commercial finite element software currently available on the market, there is more than one unit type that can be used to simulate the stress form of overhead wires in stations. Different unit types have a relatively large impact on modeling efficiency, calculation accuracy, calculation amount, memory space occupied, and the difficulty of post-processing. ANSYS software is selected for its strong modeling ability, meshing ability, solution ability, and post-processing ability.

[0052] The internal parts of the tension insulator string are connected by mutually hinged hardware, and the conductors are steel-core aluminum stranded wires with extremely low bending stiffness. Therefore, the final internal force is distributed along the axial direction, and the mechanical properties are mainly manifested as high flexibility and extremely strong geometric nonlinearity. The LINK10 unit in the ANSYS finite element software contains two nodes, each of which has three translational degrees of freedom (X, Y, Z) in the spatial system. The internally configured stiffness matrix parameters enable it to only withstand axial stress. Considering that the overhead line only exhibits tensile stress under the actual stress state, the main option KEYOPT(3) of the LINK10 unit needs to be set to 0. The node coordinate system, external contour and the order of the two nodes of the LINK10 unit are as follows: Figure 4 As shown, it fully complies with the stress characteristics of the tension insulator string and the flexible busbar. Figure 4 Here i and j are the end nodes of this unit, L0 is its initial length, and d is the deformation of the unit under the corresponding action.

[0053] (2) Determination of calculation parameters;

[0054] The construction technology of the soft busbar requires that the sag value specified in the design must be met after it is in place, and the lowest point of the three-phase busbar must be on the same horizontal line. The factors that affect the accuracy of the soft busbar simulation model establishment and sag and cutting length calculation results are: the height difference on both sides of the cross-line hanging point, the hanging point spacing, the weight and length of the hardware insulator string, the soft busbar material properties (weight per meter, cross-sectional area, elastic modulus, Poisson's ratio), the distance between the steel core tail and the steel anchor hanging hole, and the crimping extension increment.

[0055] The measurement of the busbar span requires accuracy. When there is no height difference, it is the distance between the hanging holes of the crossbeam conductors in the span. In actual engineering, there is often a difference in elevation between the hanging points at both ends of the span, and the accuracy of the measurement is easily affected by factors such as the external environment and the instrument itself. If these adverse effects are ignored, it will be impossible to provide accurate data on the conductor cutting length. For this reason, the embodiment of the present application uses a mature global positioning system with a measurement accuracy of 1mm. It can quickly collect the spatial coordinates of the target point and accurately calculate the horizontal distance, height difference, and slope distance between any target points. Each span should be measured 3 times and the average value should be taken.

[0056] The length of the hardware insulator string corresponds to the center distance between the U-shaped ring at the end of the insulator string and the two bolt holes at the other end of the hanging plate. Some material parameters are shown in Table 1. In order to ensure that the calculation parameters of the established finite element model and the insulator string assembled on site are consistent as much as possible, the weight and length of the assembled insulator string are first measured on site before the simulation model is established. There are two methods for measuring the length of the tension insulator string: the first is to assemble and tension the ruler in the ground channel steel, in which the rubber to protect the insulator should be padded in the channel steel; the second is to use a lifting machinery to lift the ruler vertically after assembly. When measuring the size, experienced full-time personnel should be responsible to ensure that the strength of the ruler for each phase remains the same; when positioning the ruler, the center of the hole of the hanging point must be used as the standard, and records should be kept. This project uses the second method. Through actual measurement, the length of the insulator string is 4.386m and the weight is 446.7kg.

[0057] Table 1: Material parameters of tension insulator string

[0058] serial number name model Length / mm Weight / kg 1 U-shaped hanging ring U-30 130 3.75 2 PH type hanging ring PH-30 180 2.59 3 LV type joint plate LV-3040 110 21.7 4 Z-type cladding Z-16 90 2.38 5 QP ball head hanging ring QP-16 60 0.50 6 Suspension insulator XWP2-160 155 10.2 7 WS type bowl head hanging plate WS-16 95 2.64 8 LV type joint plate LV-30 100 26.5 9 NYH tension clamp NYH-1440 760 11.8 10 Double Split Spacer MRJ-51 / 200 2.2

[0059] Calculated section A of steel core in conductor NAHLGJQ-1440 / 120 钢 =117mm2, calculated cross section of aluminum conductor A 铝 =1439mm2, equivalent elastic modulus E eq =65.2GPa, linear density ρ=5.478kg / m (the converted density considering the weight of the spacer rod), linear expansion coefficient α=20.5×10-6 / ℃, and the cross-sectional area of ​​the hardware related to the insulator string is assigned a real constant according to the effective bearing area.

[0060] Before using the wire cutter, temporary wire ties should be added to the ends to prevent loose strands, and the cross section should be flush and perpendicular to the axis. Use a vernier caliper to measure the steel anchor depth of each tension clamp, and a dedicated person should keep records. After crimping, the quality inspector will check the bending degree of the clamp. If the bending is large, it needs to be straightened to reduce its impact on the free form of the wire.

[0061] (3) Ideas for establishing simulation models;

[0062] The general idea of ​​model establishment is: create several bar unit models at the chord position between the hanging points; combine the material properties, set the unit material properties (elastic modulus, linear density, linear expansion coefficient, Poisson's ratio), real constants (effective cross-sectional area, initial strain) in the finite element model; apply self-weight load along the soft busbar shape, and continuously update the finite element model according to the node displacement; set the error of the iterative calculation result to 0.1%, and then set the convergence condition, that is, the design sag, to automatically iterate (N times), and the calculation result of the feedback of the loop termination corresponds to the final shape of the insulator string conductor that meets the design sag; then return to the N-1 iteration state, and count the total length of the corresponding unit of the conductor. Special attention should be paid to the treatment of the crimping part of the soft busbar and the tension clamp, and finally determine the construction cutting length of the soft busbar lxl = le-lc-lj-Δl, where: le is the total length of the unit; lc is the length of the hardware insulator string; lj is the distance between the tail end of the steel core and the steel anchor hanging hole; Δl is the crimping extension increment value.

[0063] Based on the above (1)-(3), the embodiment of the present application takes a 500kV substation 2×NAHLGJQ-1440 cross-line as an example, and constructs a simulation calculation process in the simulation analysis model of the length of the soft busbar during construction, such as Figure 5 As shown, comprising steps: 201-206;

[0064] 201. Define unit type;

[0065] 202. Measure the real constants of the conductor and generate parameters;

[0066] 203. Define the material properties of the conductor and generate parameters;

[0067] 204. Establishing a chord geometry model;

[0068] 205. Assign string attributes and generate a finite element model;

[0069] 206. Apply displacement constraints and inertia loads;

[0070] 207. Perform iterative solution based on preset sag constraint information and preset accuracy constraint index;

[0071] 208. Based on the iterative solution, the cutting length of the soft busbar construction is calculated.

[0072] At present, there are many kinds of mature finite element analysis tools circulating in the market. ANSYS software, as one of the many tools, has the advantages of generality and high efficiency in modeling, solving and result processing and is widely used. The embodiment of the present application is to obtain a soft busbar that meets the designed sag shape through the ANSYS tool. The direct iteration method can be used to obtain the construction cutting length of the soft busbar in combination with various parameters measured on site. Specifically, the following simulation calculation process examples (such as (1)-(9)) are used. Figure 6 ),as well as Figure 7 The schematic diagram of the wire crimping corresponding to the tension clamp hardware shown in the figure further elaborates on each of the above steps (201-208).

[0073] (1) Define the unit type. ANSYS provides users with a variety of structural unit types to analyze different stress conditions. The unique bilinear stiffness matrix characteristics of the LINK10 unit make it an axial tension-only or compression-only rod unit. Its tension-only characteristics can be used to simulate the actual stress conditions of the wire. The LINK10 unit is defined in advance through the "ET" command.

[0074] (2) Measure the real constants of the conductor and generate parameters. The real constants in this article refer to the cross-sectional area and initial strain value of the conductor. The cross-sectional area of ​​the steel core aluminum stranded wire is obtained by the diameter measurement method, that is, on the same cross section perpendicular to the steel core aluminum stranded wire, use a vernier caliper to measure in mutually perpendicular directions, and measure three points at both ends and the middle. Finally, take the average value as the diameter d of the steel core aluminum stranded wire. The cross-sectional area is calculated according to the formula πd 2 / 4. Set an arbitrary small initial strain (in this example, set it to 10 -6 ) is to obtain solution stability. Since the stress in the wire is generated by the load, a larger initial strain cannot be used. In ANSYS, this parameter can be generated through the "R, nset, r1, r2" command.

[0075] (3) Define the material properties of the conductor and generate parameters. If you want to get ideal calculation results, you must make the established model variables highly consistent with the actual parameters of the conductor. The material properties of the LINK10 unit can define these key parameters (elastic modulus, linear density, linear expansion coefficient, Poisson's ratio). Because the steel-core aluminum stranded wire is composed of two materials, steel core and aluminum core, but the cross-sectional area and elastic modulus of the two are different, in order to ensure the accuracy of modeling and calculation results in ANSYS, the elastic modulus of the two materials must be equivalently transformed. The equivalent elastic modulus is calculated according to the cross-sectional area and corresponding elastic modulus of the two materials according to the formula Calculation: The linear density of steel core aluminum stranded wire and insulator string is obtained by measuring and weighing. If the conductor is designed as a double-split conductor, the two conductors are mostly connected by spacers and evenly distributed, so the total weight of the spacers can be evenly distributed to the steel-core aluminum stranded wire; the determination of the linear expansion coefficient of the steel-core aluminum stranded wire needs to comprehensively consider the elastic coefficient of the steel wire, the steel-aluminum cross-section ratio and the expansion coefficient of the steel wire, and calculate it by weighted average method; Poisson's ratio is also an important physical parameter of the steel-core aluminum stranded wire, reflecting the elastic constant of the lateral deformation of the material, usually set to 0.3. Elastic modulus, linear density, linear expansion coefficient, and Poisson's ratio are respectively completed in ANSYS through the commands "MP,ex", "MP,dens", "MP,alpx", and "MP,prxy".

[0076] (4) Establish a chord geometry model. The so-called chord is the straight line segment between the hanging points on both sides of the conductor. The three-dimensional coordinate parameters of the hanging points on both sides are obtained by the following method: Use global positioning measurement technology to accurately obtain 3 to 5 sets of coordinate data of the hanging points, and then calculate the arithmetic mean as the final result. After the insulator string is assembled, it is lifted off the ground by a crane, and then the technical specialist measures its length 3 to 5 times, and the arithmetic mean is used as the final length of the insulator string. The chord between the hanging points AB is divided into three sections, which correspond to the length of the left insulator string, the length of the steel core aluminum stranded wire, and the length of the right insulator string from left to right. In ANSYS, the "L" command is used to complete the establishment based on the key points at both ends of the line segment.

[0077] (5) Assign string attributes and generate a finite element model. In the previous process, the geometric and physical parameters of the steel core aluminum stranded wire and the insulator string have been established. By using the "LATT, mat, real, type" command, these parameters and unit types can be assigned to the corresponding string, and the establishment of the solid model is completed. However, this string solid model cannot be directly used in the calculation and must be converted into a finite element model. Finally, the meshing command "LESIZE" is used to automatically decompose the solid model, thereby establishing a finite element model that can be used for calculation.

[0078] (6) Apply displacement constraints and inertia loads. The ends of the insulator string are usually connected to the ears of the structure beam using U-shaped hanging rings. Since there is no bending moment effect at this support, it should be treated as a hinge, that is, the nodes corresponding to the hanging points of the insulator string model have zero degrees of freedom in the X, Y, and Z directions. This is achieved in ANSYS using the "D, node, all" command. After the installation of the entire span of the soft busbar, the influence of wind load is not considered (consistent with the design sag condition), and it is only subject to the vertical downward gravity acceleration. The "ACEL,,9.8" command in ANSYS can be used to complete the gravity loading. The "TREF" command is used to define the ambient temperature during the installation of the soft busbar.

[0079] (7) Perform iterative solution based on the preset sag constraint information and the preset accuracy constraint index.

[0080] According to 3.5.16 of GB50149-2010 Specification for Construction and Acceptance of Busbar Installations for Electrical Installations, "the allowable deviation of busbar slack is +5% to -2.5%". Before operating this program, you can pre-set the error accuracy of 1‰ as a mandatory condition for the end of iteration. After the first solution is completed, use the "do" and "if" loop statements to extract the maximum sag of the conductor, and then calculate its error with the designed sag; if this error is not less than 1‰, use the "UPGEOM" command to add the displacement obtained from the analysis to the nodes of the finite element model and update the geometry of the finite element model, and then continue to automatically perform the loading solution step; if this error is less than 1‰, the iterative solution is terminated.

[0081] (8) Return to the N-1 iteration state and count the total length of the unit. If the entire solution process completes the iteration and terminates for the Nth time, the sag result for the Nth time meets the accuracy requirements. Because the wires involved in the Nth calculation will have a slight relaxation due to the influence of gravity load, if the embodiment of the present application wants to find out the initial state of the wire before being affected by gravity, it is necessary to return to the N-1th node state and regard the total length of the unit at this stage as the total length of the entire span of the wire. The actual operation process is as follows: After the iterative solution is terminated, enter the general post-processing module and use the "*GET,eleng,elem,i,leng" command to extract the length l of the i-th Link unit. ei , and then use the "do" loop to accumulate the lengths of all cells l e , this value is the total length of the entire span conductor that meets the design sag requirements.

[0082] (9) Calculate the length l of the soft busbar xl .

[0083] The total length of the wire l e It consists of 4 parts: ① The length of the metal insulator string l c ; ② Distance between the end of the steel core and the steel anchor hanging hole l j ; ③ crimping extension increment value Δl; ④ soft busbar cutting length l xl The length of the hardware insulator string and the total length of the conductor are obtained in the above steps 4 and 8 respectively. If the embodiment of the present application further calculates the distance l between the tail end of the steel core and the steel anchor hole, j , the crimping extension increment Δl can be used to calculate the cutting length l of the soft busbar xl = l e -l c -l j -Δl.

[0084] Distance between the end of the steel core and the steel anchor hole l jIt cannot be directly measured. In the embodiment of the present application, the total length L of the tension clamp can be measured with a steel ruler, and then the wire with the aluminum core stripped off is inserted into the crimping tube, and the end of the wire is marked. Then the wire is slowly pulled out of the crimping tube, and the length l from the end of the wire steel core to the marked part is measured. g , then we can indirectly find l j =Ll g , and re-measure and check with a depth gauge.

[0085] Under normal working conditions, the conductor is usually subjected to tens of thousands of Newtons of tension, which is mainly provided by the gripping force of the tension clamp and ultimately transmitted to the insulator string. Therefore, in actual construction, special attention is paid to the crimping process of the conductor. During the crimping process, due to the lateral constraints of the rigid mold, the conductor is bound to stretch in the longitudinal direction. If the influence of this crimping extension increment Δl is ignored, the sag of the conductor will definitely be too large, so Δl must also be included in the calculation of the entire soft busbar unloading length process. The embodiment of the present application can accurately infer the actual value of Δl through the following method: before crimping the wire, the embodiment of the present application marks the crimping area and measures the original length of the crimping section with a steel ruler; then, after the crimper completes the crimping operation according to the operating instructions, the length of the marked section is measured again; the difference between these two lengths is the crimping extension increment Δl.

[0086] In some specific embodiments, the embodiments of the present application also design a file window on the main interface of the tool and provide an import function on the window. Based on the touch import function, the import tool corresponds to a pre-associated file template, such as different working conditions pre-filled in an Excel file, and the corresponding cutting parameter information and design constraint information for each working condition. After such an Excel file is imported into the tool, batch processing of different working conditions can be directly realized by calling the ANSYS application, so as to use the tool output to obtain the soft busbar construction cutting length that should be executed in each working condition. Accordingly, the import function on the file window is used to realize batch processing to obtain the soft busbar construction cutting length corresponding to different actual working conditions, so as to meet the actual needs of different working conditions through batch processing.

[0087] In some specific embodiments, the embodiments of the present application can also associate different result report templates in the result processing window in advance, for example: use Office software to establish a calculation result report template in advance, define important parameters (such as span, height difference, design sag) and result data (cutting length, calculated sag), and the name of the picture to be exported, and then add the target library of Office Word, update the parameters and calculation results of this calculation model to the corresponding area of ​​the report template through reference, loop variable replacement, and With function, and then save it to the corresponding working directory with the project name. In the above, in response to selecting a specified target result report template from different result report templates, the intermediate data and result data involved in the entire data processing process on the tool are processed according to the data storage type and format on the target result report template to add the corresponding data information to the target result report template. Since different result report templates are pre-designed according to data review requirements, the result report template can be used to push and display data information to users in a more friendly and visual way.

[0088] Furthermore, as a response to the above Figure 1 , 5 In order to realize the method shown, an embodiment of the present application provides an application device for a tool for calculating the cutting length for construction of a substation soft busbar, wherein the windows designed on the main interface of the tool at least include a software setting window, a parameter setting window, and a result processing window. This device embodiment corresponds to the aforementioned method embodiment. For ease of reading, this device embodiment will no longer repeat the details of the aforementioned method embodiment one by one, but it should be clear that the device in this embodiment can correspond to all the contents of the aforementioned method embodiment. This device is used to determine the cutting length for construction of a soft busbar by automated simulation calculation, specifically as follows Figure 8 As shown, the device comprises:

[0089] A first input unit 31 is used to input an ANSYS application path in the software setting window, wherein the ANSYS application is an execution program based on a simulation analysis model of the soft busbar construction blanking length pre-established by ANSYS;

[0090] The second input unit 32 is used to input blanking parameter information and design constraint information in the parameter setting window, wherein the dimensions of the blanking parameter information at least include: cross-line hanging point information, soft busbar material property information, and hardware insulator string property information; the design constraint information at least includes: sag constraint information and precision constraint index;

[0091] A calling unit 33, configured to call the ANSYS application to process the parameter information and the design constraint information according to the path after starting the tool;

[0092] The third input unit 34 is used to output the soft busbar construction cutting length on the result processing window.

[0093] In some specific embodiments, Fig. 9 As shown, the device includes: a construction unit 35; the construction unit 35 is specifically used for:

[0094] A simulation calculation process is constructed in the simulation analysis model of the cutting length of the soft busbar construction, including:

[0095] Define the unit type;

[0096] Measure the real constants of the conductor and generate parameters;

[0097] Define the material properties of the wire and generate parameters;

[0098] Establishing the geometric model of the string;

[0099] Assign string properties and generate finite element models;

[0100] Apply displacement constraints and inertia loads;

[0101] Perform iterative solution based on preset sag constraint information and preset accuracy constraint indicators;

[0102] According to the iterative solution, the cutting length of the soft busbar construction is calculated.

[0103] In some specific embodiments, Fig. 9 As shown, the main interface is also designed to have a file window and an import function is provided on the file window, and the device also includes:

[0104] An import unit 36, configured to import a file template pre-associated with the tool based on touching the import function, wherein the file template pre-enters blanking parameter information and design constraint information corresponding to different working conditions;

[0105] The third output unit 34 is further used to process the cutting parameter information and the design constraint information by calling the ANSYS application after starting the tool, and output the soft busbar construction cutting length corresponding to different working conditions.

[0106] In some specific embodiments, Fig. 9 As shown, different result report templates are associated with the result processing window; the device further includes: an adding unit 37; the adding unit 37 is specifically used to:

[0107] In response to selecting a target result report template from the different result report templates, intermediate data and result data in a data processing process of calling the ANSYS application are processed to be added to the target result report template.

[0108] In summary, the application device of the substation soft busbar construction cutting length calculation tool includes a processor and a memory. The above-mentioned first input unit, second input unit, calling unit and third input unit are all stored in the memory as program units, and the processor executes the above-mentioned program units stored in the memory to realize the corresponding functions.

[0109] The processor contains a kernel, which calls the corresponding program unit from the memory. One or more kernels can be set, and the length of the soft busbar construction cutting material can be determined by adjusting the kernel parameters through automatic simulation calculation, which not only meets the accuracy requirements, but also provides more convenient operation.

[0110] An embodiment of the present application provides a storage medium having a program stored thereon, which implements an application method of a tool for calculating the cutting length of a substation soft busbar construction when the program is executed by a processor.

[0111] An embodiment of the present application provides a processor, which is used to run a program, wherein the application method of a tool for calculating the cutting length of a substation soft busbar construction executed when the program is run.

[0112] The present application also provides a computer program product, which, when executed on a data processing device, is suitable for executing a program of initializing the application method steps of a tool for calculating the length of material cut for construction of a soft busbar in an upper substation.

[0113] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes 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.

[0114] In a typical configuration, the device includes one or more processors (CPU), memory and bus. The device may also include input / output interface, network interface and the like.

[0115] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip. The memory is an example of a computer-readable medium.

[0116] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0117] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0118] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0119] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. An application method of a tool for calculating the length of a substation flexible busbar during construction, characterized in that: The windows designed on the main interface of the tool at least include a software setting window, a parameter setting window and a result processing window, and the method includes: Entering the ANSYS application path in the software setting window, the ANSYS application is an execution program based on the simulation analysis model of the soft busbar construction blanking length pre-established by ANSYS; Inputting blanking parameter information and design constraint information in the parameter setting window, wherein the dimensions of the blanking parameter information at least include: cross-line hanging point information, soft busbar material property information, and hardware insulator string property information; the design constraint information at least includes: sag constraint information and precision constraint index; After starting the tool, the ANSYS application is called according to the path to process the parameter information and the design constraint information, and the soft busbar construction cutting length is output on the result processing window.

2. The method according to claim 1, characterized in that: A simulation calculation process is constructed in the simulation analysis model of the cutting length of the soft busbar construction, including: Define the unit type; Measure the real constants of the conductor and generate parameters; Define the material properties of the wire and generate parameters; Establishing the geometric model of the string; Assign string properties and generate finite element models; Apply displacement constraints and inertia loads; Perform iterative solution based on preset sag constraint information and preset accuracy constraint indicators; According to the iterative solution, the cutting length of the soft busbar construction is calculated.

3. The method according to claim 1, characterized in that The main interface is also designed to have a file window and an import function is provided on the file window, and the method further includes: Based on touching the import function, importing the file template pre-associated with the tool, wherein the file template pre-enters the blanking parameter information and design constraint information corresponding to different working conditions; After starting the tool, the cutting parameter information and the design constraint information are processed by calling the ANSYS application program, and the cutting lengths of the soft busbar construction corresponding to different working conditions are output.

4. The method according to any one of claims 1 to 3, characterized in that Associating different result report templates on the result processing window; In response to selecting a target result report template from the different result report templates, intermediate data and result data in a data processing process of calling the ANSYS application are processed to be added to the target result report template.

5. An application device for calculating the length of a material cut for a substation flexible busbar construction, characterized in that: The windows designed on the main interface of the tool at least include a software setting window, a parameter setting window and a result processing window, and the device includes: A first input unit is used to input an ANSYS application path in the software setting window, wherein the ANSYS application is an execution program based on a simulation analysis model of the soft busbar construction blanking length pre-established by ANSYS; A second input unit is used to input blanking parameter information and design constraint information in the parameter setting window, wherein the dimensions of the blanking parameter information at least include: cross-line hanging point information, soft busbar material property information, and hardware insulator string property information; the design constraint information at least includes: sag constraint information and precision constraint index; A calling unit, configured to call the ANSYS application program to process the parameter information and the design constraint information according to the path after starting the tool; The third input unit is used to output the cutting length of the soft busbar construction on the result processing window.

6. The device according to claim 5, characterized in that: The device comprises: a construction unit; the construction unit is specifically used for: Define the unit type; Measure the real constants of the conductor and generate parameters; Define the material properties of the wire and generate parameters; Establishing the geometric model of the string; Assign string properties and generate finite element models; Apply displacement constraints and inertia loads; Perform iterative solution based on preset sag constraint information and preset accuracy constraint indicators; According to the iterative solution, the cutting length of the soft busbar construction is calculated.

7. The device according to claim 5, characterized in that The main interface is also designed to have a file window and an import function is provided on the file window, and the device further includes: An import unit, used for importing a file template pre-associated with the tool based on touching the import function, wherein the file template pre-enters blanking parameter information and design constraint information corresponding to different working conditions; The third output unit is also used to process the cutting parameter information and the design constraint information by calling the ANSYS application after starting the tool, and output the soft busbar construction cutting length corresponding to different working conditions.

8. The device according to any one of claims 5 to 7, characterized in that Associating different result report templates on the result processing window; the device further comprises: an adding unit; the adding unit is specifically used for: In response to selecting a target result report template from the different result report templates, intermediate data and result data in a data processing process of calling the ANSYS application are processed to be added to the target result report template.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the application method of the substation flexible busbar construction cutting length calculation tool according to any one of claims 1 to 4 is implemented.

10. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, an application method of a tool for calculating the length of a substation flexible busbar for construction is implemented as described in any one of claims 1 to 4.

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