Jumper design system and method for digital 3D accurate parameter calculation

Abstract

The invention discloses a jumper design system and method for digital 3D accurate parameter calculation, and belongs to the technical field of power transmission line jumper calculation. The parameter input module is used for inputting basic parameters of jumper wire calculation; the model importing module is responsible for importing a three-dimensional iron tower model; the insulator chain mounting module is used for hanging an insulator chain on the imported three-dimensional iron tower model; a data processing module; calculating data of insulator parameters, load, wind pressure and windage yaw balance; the electrical clearance checking module is used for performing electrical clearance 3D checking on the jumper wire; the result display module is used for displaying a final calculation result, and presenting various parameters, the calculation result and an analysis chart of the jumper wire in a visual mode, so that a user can conveniently check and analyze; according to the scheme, various parameters and complex calculation logic are comprehensively considered, the related parameters of the jumper can be calculated more accurately, and the accuracy of jumper design is improved.

Description

Technical Field

[0001] The present invention relates to the field of jumper calculation for transmission lines, and particularly to a jumper design system and method for digitally calculating 3D precise parameters. Background Art

[0002] In the construction of transmission lines, as a key component connecting conductors of different towers, the accuracy and reliability of the jumper design directly affect the safe operation of the transmission line. Traditional jumper calculation methods often have problems with insufficient accuracy and cannot comprehensively consider the influence of various complex factors on the jumper, such as the stress conditions, wind deflection angles, and electrical clearances of different types of jumpers under different meteorological conditions and tower structures. Obviously, it can no longer meet the requirements of the digital development of the power grid in the new era.

[0003] With the continuous increase in the voltage level of transmission lines and the more severe external environmental conditions of power grid construction, higher requirements are put forward for the accuracy and efficiency of jumper calculation. Existing calculation methods are difficult to meet these requirements, resulting in problems such as insufficient electrical clearance between the jumper and the tower and uneven stress in actual projects, affecting the stability and safety of the transmission line.

[0004] In order to adapt to a more efficient and intelligent development mode, currently, both internationally and 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 services.

[0005] Therefore, there is an urgent need for a new jumper calculation method and system to improve the accuracy, efficiency, and reliability of jumper design. Summary of the Invention

[0006] The purpose of the present invention is to provide a jumper design system and method for digitally calculating 3D precise parameters in view of the above deficiencies, which solves the problems that traditional jumper calculation methods often have insufficient accuracy and cannot comprehensively consider the influence of various complex factors on the jumper.

[0007] The present invention is realized through the following solutions: A jumper design system for digitally calculating 3D precise parameters includes A parameter input module: used to input the basic parameters for jumper calculation, providing an interface that facilitates users to input various parameters to ensure the accuracy and integrity of the parameters.

[0008] A model import module: responsible for importing a three-dimensional tower model, supporting common three-dimensional model formats, and being able to quickly and accurately import the tower model into the system.

[0009] An insulator string mounting module: mounting an insulator string on the imported three-dimensional tower model to simulate the actual installation situation and provide a real scenario for subsequent calculations.

[0010] Data processing module; calculates parameters of insulators, loads, and wind pressures. Electrical clearance checking module: performs 3D electrical clearance checking on the jumper wire, and checks whether the electrical clearance between the jumper wire and the iron tower meets the requirements according to electrical safety standards. Result display module: displays the final calculation results, presenting various parameters, calculation results, and analysis charts of the jumper wire in an intuitive manner for easy viewing and analysis by users.

[0011] The data processing module may specifically include an insulator parameter calculation module, a load calculation module, a wind pressure calculation module, and a wind deflection balance calculation module: Among them, the insulator parameter calculation module is used to calculate various parameters of the strain insulator string, and accurate parameter values are obtained through mechanical and geometric analysis of the insulator string. The load calculation module is used to calculate the wind loads and tensions of the front and rear conductors, as well as the total horizontal and vertical loads of the jumper wire system; professional calculation formulas and algorithms are built into this module to quickly and accurately complete the load calculation. The wind pressure calculation module is used to calculate the wind pressure of the jumper wire string system according to the type of jumper wire, and corresponding calculation logics are adopted for different types of jumper wires to ensure the accuracy of the wind pressure calculation. The wind deflection balance calculation module is used to perform wind deflection balance calculation of the jumper wire system, implement complex iterative algorithms, and simulate the dynamic balance process of the jumper wire under the action of gravity and wind loads.

[0012] This solution also discloses a jumper wire design method for digitally 3D precisely calculating parameters, including the following steps: Step S1: Input the basic parameters required for jumper wire calculation, import the 3D iron tower model, and hang the insulator string on the model. Step S2: Calculate the wind loads and tensions of the front and rear conductors. Step S3: Calculate the parameters of the strain insulator string. Step S4: Calculate the wind pressure of the jumper wire string system according to the type of jumper wire. Step S5: Perform wind deflection balance calculation of the jumper wire system, and solve the iterative logic for the jumper wire system to be in a dynamically balanced state under the combined action of gravity and wind loads. Step S6: Perform 3D electrical clearance checking on the jumper wire and output 3D results.

[0013] In step S1, the basic parameters include meteorological parameters, structural parameters of the iron tower, and insulator string parameters; in step S4, the types of jumper wires are divided into soft jumps or hard jumps, and among them, soft jumps are further divided into straight jumps, single jump strings, and double jump strings.

[0014] When the type of jumper wire is a hard jump, step S4 includes the following steps: Step S41: The horizontal load calculation formula is as follows; Pzh = jumper wind pressure × front and back side horizontal span × cos(ω) + (jumper string wind pressure + steel pipe wind pressure + supporting conductor wind pressure) / number of conductor splits + front and back side jumper tension × sin(ω); Among them, Pzh represents the horizontal load; ω represents the angle between the jumper span and the crossarm vertical line; Step S42: The vertical load calculation formula is as follows; Pzv = total weight of the jumper system + single weight of the conductor × front and back side vertical span of the jumper; Among them, Pzv represents the vertical load.

[0015] When the jumper type is a soft jumper, not only the wind deflection angle needs to be calculated, but also the tension deflection angle needs to be calculated, and it is iterated to reach the equilibrium state; during the iteration process, according to the calculated coordinate points at both ends of the jumper, calculate the jumper span l, height difference h, height difference angle β, initial sag value f0, and the angle ω between the jumper span and the crossarm vertical line, and then calculate the tension and line length L, and continuously adjust the sag value until the wind deflection angle error between the previous and the next time meets the given error requirement.

[0016] In step S5, specifically, by solving the iterative logic of the jumper system being in a dynamic equilibrium state under the combined action of gravity and wind load, the stress and deformation conditions of the jumper during actual operation are simulated.

[0017] In step S5, the calculation formula is as follows;

[0018] Among them, represents the jumper line length; represents the jumper stress; represents the specific load of the jumper; l represents the jumper span, and h represents the height difference.

[0019] In step S6: The 3D electrical clearance check of the jumper is specifically as follows. When conducting the electrical clearance check of the jumper, according to relevant electrical safety standards, check the electrical clearance between the jumper and the tower under different working conditions to determine whether it meets the safety requirements.

[0020] Meteorological parameters include data under high temperature conditions, low temperature conditions, ice-covered conditions, annual average conditions, strong wind conditions, internal overvoltage conditions, external overvoltage conditions, and live maintenance conditions; Insulator string parameters include insulator length, length of the suspension side fitting, length of the conductor string fitting, height of the grading ring, and the included angle of the jumper V string; Tower structure parameters include the tower head height of the tower, conductor suspension point position, floor heights of the upper, middle, and lower phases or poles, floor heights of the left, middle, and right phases or poles, bottle mouth width, distance from the bottle mouth to the tower head crossarm, crossarm slope, crossarm length, crossarm width, and tower body slope.

[0021] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows: 1) Precise calculation: By comprehensively considering various parameters and complex calculation logics, it is possible to calculate the relevant parameters of the jumper more precisely, improving the accuracy of jumper design.

[0022] 2) High reliability: Conduct multi-faceted calculations and checks on the jumper system to ensure that the jumper can meet the requirements of safe operation under different working conditions, enhancing the reliability of jumper design. High efficiency and convenience: The design of the system realizes the automation and process flow of the calculation process, improving the calculation efficiency and facilitating the use by engineering personnel.

[0023] 3) Efficiency improvement: The design cycle is shortened from 2 - 4 weeks of traditional manual modeling to within 10 minutes.

[0024] 4) Error rate reduction: More than 90% of human oversights, such as insufficient safety distance, are avoided through the rule engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a connection relationship diagram of the system in the present invention; Figure 2 It is a working flow chart of the method in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] All features disclosed in this specification, or all steps in any disclosed method or process, except mutually exclusive features and / or steps, can be combined in any manner.

[0027] Any feature disclosed in this specification (including any additional claims, abstract) can be replaced by other equivalent or features with similar purposes, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is only an example of a series of equivalent or similar features.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a predetermined orientation, be constructed and operated in a predetermined orientation, and therefore should not be construed as a limitation of the present invention.

[0029] In addition, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features.

[0030] Embodiment 1 As Figure 1 shown, the present invention provides a technical solution: A jumper design system for digitally 3D accurately calculating parameters, including a parameter input module: used to input the basic parameters for jumper calculation, providing an interface that facilitates users to input various parameters, and ensuring the accuracy and integrity of the parameters.

[0031] A model import module: responsible for importing a three-dimensional tower model, supporting common three-dimensional model formats, and being able to quickly and accurately import the tower model into the system.

[0032] An insulator string mounting module: hanging an insulator string on the imported three-dimensional tower model, simulating the actual installation situation, and providing a real scenario for subsequent calculations.

[0033] A data processing module; calculating the parameters of insulator parameters, loads, and wind pressures; An electrical clearance checking module: performing 3D electrical clearance checking on the jumper, and checking whether the electrical clearance between the jumper and the tower meets the requirements according to electrical safety standards.

[0034] A result display module: displaying the final calculation results, presenting the various parameters, calculation results, and analysis charts of the jumper in an intuitive manner, facilitating users to view and analyze.

[0035] The data processing module may specifically include an insulator parameter calculation module, a load calculation module, a wind pressure calculation module, and a wind deflection balance calculation module: Among them, the insulator parameter calculation module is used to calculate the various parameters of the strain insulator string, and obtain accurate parameter values through mechanical and geometric analysis of the insulator string; The load calculation module is used to calculate the wind loads and tensions of the front and rear conductors, as well as the total horizontal and vertical loads of the jumper system; this module incorporates professional calculation formulas and algorithms, and 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 type of jumper, and adopts corresponding calculation logics for different types of jumpers to ensure the accuracy of wind pressure calculation; The wind deflection balance calculation module is used to perform wind deflection balance calculation of the jumper system, implement complex iterative algorithms, and simulate the dynamic balance process of the jumper under the action of gravity and wind loads.

[0036] Embodiment 2 As Figure 2 shown, the present invention provides a technical solution: A method for digitally 3D accurately calculating parameters of a jumper design: specifically including the following steps: Step S1: Input the basic parameters required for jumper calculation, import a three-dimensional tower model, and hang an insulator string on the model.

[0037] Specifically, the data includes wire models, meteorological parameters such as wind speed, wind direction, air temperature, and icing, insulator string parameters such as the length and material of insulators and the type and size of fittings, and tower structure parameters such as the height, cross-arm size, and slope of the tower. Import the 3D tower model, and the 3D model can intuitively display the structure of the tower and the installation position of the jumper, providing a more accurate basis for subsequent calculations and analyses. After importing the model, hang the strings on the model to simulate the actual jumper installation situation; Step S2: Calculate the wind loads and tensions of the front and rear conductors.

[0038] Specifically, for the calculation of wind loads, factors such as wind speed, wind direction, the windward area of the conductor, and the aerodynamic coefficient need to be considered, and it is obtained through professional calculation formulas. The calculation of tension is related to the material, length, sag, and the load borne by the conductor, and is solved according to the principles of mechanics; Step S3: Calculate the parameters of the strain insulator string, including the wind pressures on the front and rear sides, wind deflection angles, tilt angles, and coordinates. Wind pressure affects the force on the insulator string, and the wind deflection angle and tilt angle reflect the attitude changes of the insulator string under the action of wind loads and gravity; Step S4: According to the type of jumper (soft jumper or hard jumper, and soft jumpers are further divided into straight jumpers, single jump strings, and double jump strings), calculate the wind pressure of the jumper string system. Due to the differences in structure and mechanical characteristics between soft jumpers and hard jumpers, there are differences in wind pressure calculation; Step S5: Conduct wind deflection balance calculation for the jumper system, and solve the iterative logic for the jumper system to be in a dynamically balanced state under the combined action of gravity and wind loads. This is one of the key steps of this method. By solving the iterative logic for the jumper system to be in a dynamically balanced state under the combined action of gravity and wind loads, the stress and deformation conditions of the jumper during actual operation are simulated. During the calculation process, when considering a soft jumper, not only the wind deflection angle needs to be calculated, but also the pull deflection angle needs to be calculated, and it is made to reach a balanced state through iteration. During the iteration process, according to the calculated coordinate points at both ends of the jumper, calculate the jumper span l, height difference h, height difference angle β, initial sag value (f0 = 0.15×l), the angle ω between the jumper span and the perpendicular line of the cross-arm, and then calculate the tension and wire length L, and continuously adjust the sag value until the wind deflection angle error between the previous and the next time meets the given error requirement. This can ensure the accuracy and reliability of the calculation results, making the jumper design more in line with the actual operation situation; Step S6: Conduct 3D electrical clearance verification for the jumper under various working conditions and output 3D results. According to relevant electrical safety standards, check the electrical clearance between the jumper and the tower under different working conditions to determine whether it meets the safety requirements. This step is an important link to ensure the safe operation of the transmission line, ensuring that the jumper will not cause safety accidents such as discharge due to insufficient electrical clearance under various conditions.

[0039] The specific steps of step S4 include the following steps: Step S41: The horizontal load calculation formula is; Pzh = jumper wind pressure × horizontal span before and after × cos(ω) + (jumper string wind pressure + steel pipe wind pressure + supporting conductor wind pressure) / number of conductor splits + tension of jumper before and after × sin(ω); Among them, Pzh represents the horizontal load; ω represents the included angle between the jumper span and the perpendicular line of the cross arm; Step S42: The vertical load calculation formula is; Pzv = total weight of the jumper system (including the single weight of the supporting conductor) + single weight of the conductor × vertical span of the jumper before and after; Among them, Pzv represents the vertical load; In some possible implementation manners, the specific steps of step S5 include the following steps: Step S51: The calculation formula is;

[0040] Among them, represents the jumper wire length; represents the jumper stress; represents the specific weight of the jumper; l represents the jumper span; h represents the height difference.

[0041] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A jumper design system for digital 3D precise calculation parameters, characterized in that: It includes a parameter input module: used to input the basic parameters for jumper calculation; A model import module: responsible for importing a three-dimensional iron tower model; An insulator string hanging module: hanging an insulator string on the imported three-dimensional iron tower model; A data processing module; calculates data such as insulator parameters, loads, wind pressures, and wind deflection balances; An electrical clearance verification module: performs 3D electrical clearance verification on the jumper; A result display module: displays the final calculation results, presenting various parameters, calculation results, and analysis charts of the jumper in an intuitive manner for convenient viewing and analysis by users.

2. The jumper design system for digitally 3D precisely calculating parameters according to claim 1, wherein: The data processing module specifically includes an insulator parameter calculation module, a load calculation module, a wind pressure calculation module, and a wind deflection balance calculation module: Among them, the insulator parameter calculation module is used to calculate various parameters of the strain insulator string, and accurate parameter values are obtained through mechanical and geometric analysis of the insulator string; The load calculation module is used to calculate the wind loads and tensions of the front and rear conductors, as well as the total horizontal and vertical loads of the jumper system; This module has built-in calculation formulas and algorithms, and 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, and adopts corresponding calculation logics for different types of jumpers to ensure the accuracy of wind pressure calculation; The wind deflection balance calculation module is used to perform wind deflection balance calculation of the jumper system, implement complex iterative algorithms, and simulate the dynamic balance process of the jumper under the action of gravity and wind loads accurately.

3. A jumper design method for digital 3D precise calculation parameters, based on the jumper design system for digital 3D precise calculation parameters described in claim 1 or 2, characterized in that: It includes the following steps: Step S1: Input the basic parameters required for jumper calculation, import the three-dimensional iron tower model, and hang an insulator string on the model; Step S2: Calculate the wind loads and tensions of the front and rear conductors; Step S3: Calculate the parameters of the strain insulator string; Step S4: Calculate the wind pressure of the jumper string system according to the jumper type; Step S5: Perform wind deflection balance calculation of the jumper system, and solve the iterative logic for the jumper system to be in a dynamically balanced state under the combined action of gravity and wind loads; Step S6: Perform 3D electrical clearance verification on the jumper and output three-dimensional results.

4. The jumper design method for digital 3D precise calculation parameters according to claim 3, characterized in that: In step S1, the basic parameters include meteorological parameters, structural parameters of the iron tower, and insulator string parameters; in step S4, the jumper types are divided into soft jumps or hard jumps, and among them, the soft jumps are further divided into straight jumps, single jump strings, and double jump strings.

5. The jumper design method for digital 3D precise calculation parameters according to claim 4, characterized in that: When the jumper type is a hard jump, step S4 includes the following steps: Step S41: The horizontal load calculation formula is; Pzh = jumper wind pressure × front and rear horizontal spacings × cos(ω) + (jumper string wind pressure + steel pipe wind pressure + supporting conductor wind pressure) / number of conductor splits + front and rear jumper tensions × sin(ω); Among them, Pzh represents the horizontal load; ω represents the angle between the jumper span and the crossarm vertical line; Step S42: The vertical load calculation formula is; Pzv = total weight of the jumper system + single weight of the conductor × front and rear vertical spacings of the jumper; Among them, Pzv represents the vertical load.

6. The jumper design method for digitally 3D precisely calculating parameters according to claim 4, characterized in that: When the jumper type is soft jumper, not only the wind deflection angle needs to be calculated, but also the pull deflection angle needs to be calculated, and iteration is used to make it reach the equilibrium state. During the iteration process, according to the calculated coordinate points at both ends of the jumper, the jumper span l, height difference h, height difference angle β, initial sag value f0, and the angle ω between the jumper span and the perpendicular line of the crossarm are calculated, and then the tension and wire length L are calculated. The sag value is continuously adjusted until the error of the wind deflection angle between the previous and the next time meets the given error requirement.

7. The jumper design method for digitally precise 3D calculation parameters according to claim 3 or 4, characterized in that In step S5, specifically, the iterative logic of the jumper system being in a dynamic equilibrium state under the combined action of gravity and wind load is solved to simulate the stress and deformation conditions of the jumper during actual operation.

8. The jumper design method for digitally precise 3D calculation parameters according to claim 7, characterized in that, In step S5, the calculation formula is; Among them, represents the jumper wire length; represents the jumper wire stress; represents the specific loading of the jumper wire; l represents the span of the jumper wire, and h represents the height difference.

9. The jumper design method for digitally calculating precise 3D parameters according to claim 3, characterized in that In step S6: The specific content of the 3D check of the electrical clearance of the jumper is that when checking the electrical clearance of the jumper, according to 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.

10. The jumper design method for digital 3D precise calculation parameters 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 overvoltage conditions, external overvoltage conditions, and live maintenance conditions; Insulator string parameters include insulator length, length of the fitting on the hanging point side, length of the fitting of the conductor string, height of the grading ring, and the included angle of the V-string of the jumper; Tower structure parameters include the tower head height of the tower, conductor hanging point position, layer heights of the upper, middle, and lower phases or poles, layer heights of the left, middle, and right phases or poles, bottle mouth width, distance from the bottle mouth to the tower head crossarm, crossarm slope, crossarm length, crossarm width, and tower body slope.

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