A digital 3D precise calculation parameter jumper design system and method

Abstract

The application discloses a kind of digital 3D accurate calculation parameter jumper design system and method, belong to transmission line jumper calculation technical field;Including parameter input module: for input jumper calculation basic parameter;Model import module: responsible for importing three-dimensional iron tower model;Insulator string mounting module: hang insulator string on imported three-dimensional iron tower model;Data processing module;The data of insulator parameter, load, wind pressure, wind deviation balance are calculated;Electrical clearance checking module: 3D checking is carried out to jumper for electrical clearance;Result display module: show final calculation result, in intuitive way present jumper each parameter, calculation result and analysis chart, facilitate user to view and analyze;The scheme can more accurately calculate the related parameters of jumper by comprehensively considering various parameters and complex calculation logic, improve the accuracy of jumper design.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of power transmission line jumper calculation, in particular to a digital 3D precise parameter calculation jumper design system and method. BACKGROUND

[0002] In the construction of power transmission lines, jumpers are key components that connect the conductors of different towers. The accuracy and reliability of their design directly affect the safe operation of the power transmission line. Traditional jumper calculation methods often have insufficient precision and cannot fully consider various complex factors affecting jumpers, such as the stress of different types of jumpers under different weather conditions and tower structures, wind deflection angles, and electrical clearances. Obviously, it cannot meet the needs of the digital development of the new era power grid.

[0003] With the continuous improvement of the voltage level of power transmission lines and the increasingly harsh external environmental conditions of power grid construction, higher requirements are placed on the accuracy and efficiency of jumper calculation. The existing calculation methods cannot meet these needs, leading to problems such as insufficient electrical clearance between jumpers and towers, uneven stress, and affecting the stability and safety of power transmission lines in actual engineering.

[0004] In order to adapt to a more efficient and intelligent development model, currently, whether internationally or domestically, the development trend of the power grid is reflected in promoting the digital and intelligent transformation of the power grid, and assisting the digital transformation of traditional power grid businesses.

[0005] Therefore, a new jumper calculation method and system are needed to improve the accuracy, efficiency, and reliability of jumper design. SUMMARY

[0006] The purpose of the present application is to provide a digital 3D precise parameter calculation jumper design system and method to solve the problem of insufficient precision in traditional jumper calculation methods and the inability to fully consider various complex factors affecting jumpers.

[0007] The present application is achieved by the following scheme:

[0008] A digital 3D precise parameter calculation jumper design system, comprising

[0009] Parameter input module: used for inputting basic parameters for jumper calculation, providing an interface for users to input various parameters, ensuring the accuracy and completeness of the parameters.

[0010] Model import module: responsible for importing three-dimensional tower models, supporting common three-dimensional model formats, and quickly and accurately importing tower models into the system.

[0011] Insulator string hanging module: hang insulator strings on the imported three-dimensional tower model, simulate the actual installation situation, and provide a real scene for subsequent calculation.

[0012] Data processing module: calculate the parameters of insulators, loads, and wind pressure.

[0013] Electrical gap checking module: perform 3D checking of electrical gap for jumpers, check whether the electrical gap between jumpers and towers meets the requirements according to electrical safety standards.

[0014] Result display module: display the final calculation results, present the parameters, calculation results, and analysis charts of jumpers in an intuitive way, and facilitate user viewing and analysis.

[0015] The data processing module can specifically include an insulator parameter calculation module, a load calculation module, a wind pressure calculation module, and a wind deflection balance calculation module.

[0016] The insulator parameter calculation module is used to calculate the parameters of strain insulator strings, and accurate parameter values are obtained through mechanical and geometric analysis of the insulator strings.

[0017] The load calculation module is used to calculate the wind load and tension of front and rear conductors, as well as the total horizontal and vertical load of the jumper system. This module has built-in professional calculation formulas and algorithms, which can quickly and accurately complete load calculation.

[0018] The wind pressure calculation module is used to calculate the wind pressure of the jumper string system according to the type of jumpers. Different types of jumpers use corresponding calculation logic to ensure the accuracy of wind pressure calculation.

[0019] The wind deflection balance calculation module is used to perform wind deflection balance calculation of the jumper system, and implement complex iterative algorithms to simulate the dynamic balance process of jumpers under the action of gravity and wind load.

[0020] The scheme also discloses a digital 3D precise parameter calculation jumper design method, which includes the following steps:

[0021] Step S1: input the basic parameters required for jumper calculation, and import a three-dimensional tower model, and hang insulator strings on the model.

[0022] Step S2: calculate the wind load and tension of front and rear conductors.

[0023] Step S3: calculate the parameters of strain insulator strings.

[0024] Step S4: calculate the wind pressure of the jumper string system according to the type of jumpers.

[0025] Step S5: perform wind deflection balance calculation of the jumper system, and solve the iterative logic of the jumper system in a dynamic balance state under the combined action of gravity and wind load.

[0026] Step S6: Electrical gap 3D checking is performed on the jumper, and a three-dimensional result is output.

[0027] In step S1, the basic parameters include meteorological parameters, tower structure parameters and insulator string parameters; in step S4, the jumper type is divided into soft jump or hard jump, wherein the soft jump is further divided into straight jump, single jump string and double jump string.

[0028] When the jumper type is hard jump, step S4 includes the following steps:

[0029] Step S41: the horizontal load calculation formula is:

[0030] Pzh=jumping wire wind pressure x front and back side horizontal span x cos(ω)+(jumping string wind pressure+steel pipe wind pressure+matching conductor wind pressure) / conductor division number+front and back side jumper tension x sin(ω);

[0031] Wherein, Pzh represents the horizontal load; ω represents the angle between the jumper span and the cross arm vertical line;

[0032] Step S42: the vertical load calculation formula is:

[0033] Pzv=total weight of the jumper system+conductor single weight x front and back side jumper vertical span;

[0034] Wherein, Pzv represents the vertical load.

[0035] When the jumper type is soft jump, not only the wind deflection angle needs to be calculated, but also the pull deflection angle needs to be calculated, and the iteration is carried out to make it reach the balanced state; in the iteration process, according to the calculated coordinate points of the two ends of the jumper, the jumper span l, the height difference h, the height difference angle β, the sag initial value f0, the angle ω between the jumper span and the cross arm vertical line are calculated, and then the tension and the line length L are calculated, and the sag value is adjusted constantly until the error of the front and back wind deflection angles meets the given error requirement.

[0036] In step S5, the iteration logic of the jumper system under the comprehensive action of gravity and wind load in the dynamic balance state is solved, and the stress and deformation of the jumper in actual operation are simulated.

[0037] In step S5, the calculation formula is:

[0038]

[0039] Wherein, represents the jumper line length; represents the jumper stress; represents the jumper specific load; l represents the jumper span h represents the height difference.

[0040] In step S6: the electrical gap 3D checking of the jumper is specifically, when the electrical gap checking of the jumper is carried out, the electrical gap of the jumper with the tower under different working conditions is checked according to the relevant electrical safety standards, and whether the safety requirements are met is judged.

[0041] The meteorological parameters include data under high-temperature working conditions, low-temperature working conditions, icing working conditions, annual average working conditions, strong wind working conditions, internal overvoltage working conditions, external overvoltage working conditions, and live-line maintenance working conditions.

[0042] The insulator string parameters include the length of the insulator string, the length of the hanging point side fitting, the length of the conductor string fitting, the height of the grading ring, and the V-string included angle of the jumper.

[0043] The tower structure parameters include the tower head height of the tower, the conductor hanging point position, the layer height of the upper, middle and lower phases or poles, the layer height of the left, middle and right phases or poles, the bottle mouth width, the distance from the bottle mouth to the tower head cross arm, the cross arm slope, the cross arm length, the cross arm width, and the tower body slope.

[0044] As described above, due to the adoption of the above technical solutions, the beneficial effects of the present application are:

[0045] 1) Precise calculation: by comprehensively considering various parameters and complex calculation logic, the related parameters of the jumper can be more accurately calculated, and the accuracy of the jumper design is improved.

[0046] 2) High reliability: the jumper system is calculated and checked in multiple aspects to ensure that the jumper can meet the safe operation requirements under different working conditions, and the reliability of the jumper design is improved.

[0047] 3) Efficiency improvement: the design cycle is shortened from 2-4 weeks of traditional manual modeling to 10 minutes.

[0048] 4) Error rate reduction: more than 90% of human errors such as insufficient safety distance are avoided through the rule engine. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 The connection relationship diagram of the system in the present application;

[0050] Figure 2 The working flowchart of the method in the present application. DETAILED DESCRIPTION

[0051] All features disclosed in this specification, or the steps of all methods or processes disclosed, can be combined in any manner, except where mutually exclusive.

[0052] Any feature in the disclosure of the specification (including any accompanying claims, abstract) can be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. That is, unless expressly stated otherwise, every feature is one of alternative possibilities among others.

[0053] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a predetermined orientation, be constructed and operated in a predetermined orientation, and therefore cannot be understood as a limitation on the present application.

[0054] In addition, the terms "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features referred to. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features.

[0055] Embodiment 1

[0056] As Figure 1 shown, the present application provides a technical solution:

[0057] A digital 3D precise calculation parameter jumper design system, comprising a parameter input module: for inputting basic parameters of jumper calculation, providing an interface for users to input various parameters, ensuring the accuracy and integrity of the parameters.

[0058] Model import module: responsible for importing three-dimensional tower model, supporting common three-dimensional model formats, and quickly and accurately importing tower model into the system.

[0059] Insulator string mounting module: mounting insulator string on the imported three-dimensional tower model, simulating the actual installation situation, and providing a real scene for subsequent calculation.

[0060] Data processing module; calculate the parameters of insulator, load and wind pressure;

[0061] Electrical clearance checking module: 3D checking of electrical clearance of jumper, checking whether the electrical clearance of jumper and tower meets the requirements according to electrical safety standards.

[0062] Result display module: display the final calculation results, present the parameters, calculation results and analysis charts of the jumper in an intuitive way, and facilitate user to view and analyze.

[0063] The data processing module can specifically include an insulator parameter calculation module, a load calculation module, a wind pressure calculation module and a wind deflection balance calculation module: The data processing module can specifically include an insulator parameter calculation module, a load calculation module, a wind pressure calculation module and a wind deflection balance calculation module:

[0064] The insulator parameter calculation module is configured to calculate parameters of the strain insulator string, and accurate parameter values are obtained through mechanical and geometric analysis of the insulator string;

[0065] The load calculation module is configured to calculate wind load and tension of the front and rear conductors, and total horizontal and vertical load of the jumper system. The module has built-in professional calculation formulas and algorithms, and can quickly and accurately complete load calculation;

[0066] The wind pressure calculation module is configured to calculate the wind pressure of the jumper string system according to the type of the jumper. Different types of jumpers adopt corresponding calculation logic to ensure the accuracy of wind pressure calculation;

[0067] The wind deflection balance calculation module is configured to calculate the wind deflection balance of the jumper system, and implement a complex iterative algorithm to simulate the dynamic balance process of the jumper under the action of gravity and wind load.

[0068] Embodiment 2

[0069] As shown in Figure 2 The present application provides a technical solution:

[0070] A digital 3D precise calculation parameter jumper design method: specifically comprising the following steps:

[0071] Step S1: input the basic parameters required for jumper calculation, and import a three-dimensional tower model, and hang the insulator string on the model.

[0072] Specifically, the data includes conductor type, wind speed, wind direction, air temperature, icing and other meteorological parameters, insulator length, material, type and size of fittings, tower height, cross arm size, slope and other tower structure parameters. Import the three-dimensional tower model. The three-dimensional model can intuitively display the structure of the tower and the installation position of the jumper, providing more accurate basis for subsequent calculation and analysis. After importing the model, hang the string on the model to simulate the actual jumper installation situation;

[0073] Step S2: calculate the wind load and tension of the front and rear conductors.

[0074] Specifically, the data includes wind speed, wind direction, wind area of the conductor, and aerodynamic coefficient, which are considered in the calculation of wind load. The professional calculation formula is used to obtain the wind load. The calculation of tension is related to the material, length, sag of the conductor and the load, which is solved according to the principle of mechanics;

[0075] Step S3: calculate the parameters of the strain insulator string, including front and rear wind pressure, wind deflection angle, inclination angle and coordinates. Wind pressure affects the stress of the insulator string, and wind deflection angle and inclination angle reflect the attitude change of the insulator string under the action of wind load and gravity;

[0076] Step S4: Calculate the jumper string system wind pressure according to the jumper type (soft jump or hard jump, soft jump is further divided into straight jump, single jump string and double jump string). Soft jump and hard jump are different in wind pressure calculation due to the difference in structure and mechanical properties;

[0077] Step S5: Perform wind deflection balance calculation of the jumper system to solve the iterative logic of the jumper system in a dynamic balance state under the combined action of gravity and wind load, which is one of the key steps of the method. By solving the iterative logic of the jumper system in a dynamic balance state under the combined action of gravity and wind load, the stress and deformation of the jumper in actual operation are simulated. In the calculation process, when considering soft jump, not only the wind deflection angle needs to be calculated, but also the pull deflection angle needs to be calculated, and the balance state is achieved through iteration. In the iteration process, according to the calculated coordinates of the two ends of the jumper, the span l, the height difference h, the height difference angle β, the initial value of sag (f0=0.15×l), the angle ω between the jumper span and the vertical line of the cross arm are calculated, and then the tension and the length L are calculated. The sag value is adjusted constantly until the wind deflection angle error of the previous and the next time meets the given error requirement. In this way, the accuracy and reliability of the calculation results can be ensured, and the jumper design can be more in line with the actual operation situation;

[0078] Step S6: Perform 3D check of the electrical clearance of the jumper under various working conditions and output the three-dimensional results. According to the relevant electrical safety standards, the electrical clearance between the jumper and the tower under different working conditions is checked to determine whether it meets the safety requirements. This step is an important link to ensure the safe operation of the power transmission line and to ensure that the jumper will not cause discharge and other safety accidents due to insufficient electrical clearance under various conditions.

[0079] The step S4 specifically includes the following steps:

[0080] Step S41: The horizontal load calculation formula is:

[0081] Pzh= jumper wind pressure × horizontal span of front and back sides × cos(ω) + (jumper string wind pressure + steel pipe wind pressure + supporting conductor wind pressure) / conductor division number + front and back jumper tension × sin(ω);

[0082] Wherein, Pzh represents the horizontal load;

[0083] ω represents the angle between the jumper span and the vertical line of the cross arm;

[0084] Step S42: The vertical load calculation formula is:

[0085] Pzv= total weight of the jumper system (including the weight of the supporting conductor) + conductor weight × vertical span of front and back jumpers;

[0086] Wherein, Pzv represents the vertical load;

[0087] In some possible implementation manners, the step S5 specifically includes the following steps.

[0088] Step S51: the calculation formula is:

[0089]

[0090] wherein, L represents the jumper wire length;

[0091] σ represents the jumper stress;

[0092] ρ represents the jumper specific load;

[0093] l S represents the jumper span;

[0094] h H represents the height difference.

[0095] The above merely describes preferred embodiments of the present application but not for the purpose of limiting the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A digital 3D jumper design method with precise parameter calculation, characterized by: A jumper design system based on digital 3D precise parameter calculation includes a parameter input module for inputting basic jumper calculation parameters; a model import module for importing 3D tower models; an insulator string mounting module for mounting insulator strings on the imported 3D tower models; a data processing module for calculating insulator parameters, loads, wind pressure, and windage balance; and an electrical clearance verification module for performing 3D electrical clearance verification on jumpers. Result display module: displays the final calculation results, presenting the various parameters, calculation results and analysis charts of the jumper in an intuitive way, making it convenient for users to view and analyze; The method comprises the following steps: Step S1: Input the basic parameters required for jumper calculation, import a 3D tower model, and hang insulator strings on the model; the basic parameters include meteorological parameters, tower structural parameters, and insulator string parameters; in step S4, the jumper type is classified as soft jump or hard jump, where soft jump is further divided into direct jump, single jump string, and double jump string; Step S2: Calculate the wind load and tension of the front and rear conductors; Step S3: Calculating parameters of the tension insulator string; Step S4: Calculate the wind pressure of the jumper string system according to the jumper type; when the jumper type is soft jumper, not only the wind deflection angle but also the pull deflection angle need to be calculated, and the equilibrium state is reached through iteration; during the iteration process, based on the calculated coordinate points at both ends of the jumper, calculate the jumper span l, height difference h, height difference angle β, sag initial value f0, and the angle ω between the jumper span and the vertical line of the crossarm, then calculate the tension and line length L, and continuously adjust the sag value until the wind deflection angle errors meet the given error requirements; When the jumper type is hard jump, step S4 includes the following steps: Step S41: The horizontal load calculation formula is: Pzh = jumper wind pressure × front and rear horizontal spacing × cos(ω) + (jumper string wind pressure + steel pipe wind pressure + supporting conductor wind pressure) / number of conductor splits + front and rear jumper tension × sin(ω); Where, Pzh represents the horizontal load; ω represents the angle between the jumper span and the vertical line of the crossarm; Step S42: The vertical load calculation formula is: Pzv = total weight of jumper system + weight of single conductor × vertical distance between front and rear jumpers; Where, Pzv represents the vertical load; Step S5: performing windage balance calculation on the jumper system, and solving the iterative logic of the jumper system being in a dynamic equilibrium state under the combined effects of gravity and wind loads; Step S6: Perform 3D electrical clearance verification on the jumper and output the three-dimensional results; specifically, when performing 3D electrical clearance verification on the jumper, the electrical clearance between the jumper and the tower is checked under different working conditions according to relevant electrical safety standards to determine whether it meets safety requirements.

2. The jumper design method with digital 3D precise parameter calculation according to claim 1, characterized in that: The data processing module specifically includes an insulator parameter calculation module, a load calculation module, a wind pressure calculation module, and a windage balance calculation module. The insulator parameter calculation module is used to calculate various parameters of the tension insulator string, and obtains accurate parameter values ​​through mechanical and geometric analysis of the insulator string. The load calculation module is used to calculate the wind load and tension of the front and rear side conductors, as well as the total horizontal and vertical loads of the jumper system. This module has built-in calculation formulas and algorithms, which can quickly and accurately complete load calculations. The wind pressure calculation module is used to calculate the wind pressure of the jumper string system according to the jumper type. The corresponding calculation logic is used for different types of jumpers to ensure the accuracy of the wind pressure calculation. The windage balance calculation module is used to perform windage balance calculations on the jumper system, implement complex iterative algorithms, and simulate the dynamic balance process of the jumper under the action of gravity and wind loads.

3. The jumper design method of digital 3D precise parameter calculation according to claim 2, characterized in that: In step S5, specifically, the iterative logic of solving the dynamic equilibrium state of the jumper system under the combined effects of gravity and wind load is used to simulate the stress and deformation of the jumper in actual operation.

4. The jumper design method with digital 3D precise parameter calculation according to claim 3, characterized in that: In step S5, the calculation formula is: in, Indicates the jumper wire length; Indicates jumper stress; It indicates the jumper load ratio; l indicates the jumper spacing; h indicates the height difference.

5. The jumper design method of digital 3D precise parameter calculation according to claim 4, characterized in that: Meteorological parameters include data under high temperature conditions, low temperature conditions, icing conditions, annual average conditions, strong wind conditions, internal conditions, external conditions, and live maintenance conditions; Insulator string parameters include insulator length, length of hardware on the hanging point side, length of conductor string hardware, height of grading ring, and V-string angle of jumper wire; The structural parameters of the tower include the tower head height, the position of the conductor hanging point, the floor heights of the upper, middle and lower phases or poles, the floor heights of the left, middle and right phases or poles, the bottle mouth width, the distance from the bottle mouth to the tower head crossarm, the crossarm slope, the crossarm length, the crossarm width and the tower body slope.

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