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Finite element modeling and bearing method for line-tower coupling system of power transmission tower

A transmission tower, finite element technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as missing data, spending a lot of time and energy, and affecting the accuracy and precision of finite element analysis

Active Publication Date: 2012-12-26
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using the interface between finite element software and CAD software to directly introduce the CAD model of the coupling architecture of transmission towers often leads to model changes and too many nodes, so that missing data affects the accuracy and precision of finite element analysis.
However, it takes a lot of time and energy to directly use finite element software to establish a finite element model of the coupling system of transmission towers, and the process of abstracting the finite element model depends largely on experienced analysts.

Method used

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  • Finite element modeling and bearing method for line-tower coupling system of power transmission tower
  • Finite element modeling and bearing method for line-tower coupling system of power transmission tower
  • Finite element modeling and bearing method for line-tower coupling system of power transmission tower

Examples

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Effect test

example 1

[0036] Example 1: Finite element analysis of 110kvZGU linear tower line tower coupling system

[0037] 1. Establish the finite element model of the overall structure of the transmission tower. When entering the main interface of software operation, the user selects the type of frame from the model library and enters the model parameters. The user can input the relevant parameters of the model according to the example. After entering the relevant parameters and determining the finite element model of a single frame, follow the transmission tower For the actual shape of the overall structure, by changing the working plane, continue to follow the above steps to determine the finite element model of the next frame. This model applies the DZHG-1 diaphragm, fork-shaped diaphragm, rhombus-shaped diaphragm, tower legs with three equal fork-shaped outriggers, fork-shaped triangular supplementary boom tower body, fork-shaped tower body, and fork-shaped tower body. Side structure forms ...

example 2

[0041] Example 2: Finite element analysis of 220kv SJT corner tension tower line-tower coupling system

[0042] 1. Establish the finite element model of the overall structure of the transmission tower. When entering the main interface of software operation, the user selects the type of frame from the model library and enters the model parameters. The user can input the relevant parameters of the model according to the example. After entering the relevant parameters and determining the finite element model of a single frame, follow the transmission tower For the actual shape of the overall structure, by changing the working plane, continue to follow the above steps to determine the finite element model of the next frame. This model applies the DZHG-1 diaphragm, fork-shaped diaphragm, diamond-shaped diaphragm, cross diaphragm and other diaphragm forms, as well as the simplified diagram of the 332-type triangular supplementary material connecting legs, the fork-shaped triangular ...

example 3

[0046] Example 3: Finite element analysis of 500kv SJTZB42A wine glass single loop linear tower line tower coupling system

[0047] 1. Establish the finite element model of the overall structure of the transmission tower. When entering the main interface of software operation, the user selects the type of frame from the model library and enters the model parameters. The user can input the relevant parameters of the model according to the example. After entering the relevant parameters and determining the finite element model of a single frame, follow the transmission tower For the actual shape of the overall structure, by changing the working plane, continue to follow the above steps to determine the finite element model of the next frame. This model applies the DZHG-1 diaphragm, fork-shaped diaphragm, diamond-shaped diaphragm, cross diaphragm and other diaphragm forms, as well as the simplified diagram of the 332-type triangular supplementary material connecting legs, the for...

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Abstract

The invention relates to a finite element modeling and bearing method for a line-tower coupling system of a power transmission tower. In the method, a three dimensional CAD (Computer Aided Design) model of the whole structure component of the power transmission tower is actively simplified; a frame characteristic structure is extracted, and a finite element model base is established according to the frame characteristic structure; a single plane is gradually transited to multiple planes by transforming work planes according to the actual shape of the power transmission tower structure, and the single plane structure is gradually 'spliced' to form a multi-plane structure dynamically; a lead is subjected to parameter modeling by adopting an analysis and numerical value comprehensive method, and is combined with the power transmission tower model, so that the finite element model of the line-tower coupling system of the power transmission tower is finally determined; and wind speed, temperature and other parameters are input in a loader program to perform uniformly distributed load, and after the calculation is completed, a required result is analyzed and extracted automatically by virtue of the program. By utilizing the method, the finite element analyzing circle is effectively shortened, the computational mechanic theory of the line-tower coupling system of the power transmission tower is represented, and the finite element model is more accurate than the CAD model geometrically.

Description

technical field [0001] The invention relates to a finite element analysis method of a power transmission tower and a wire structure, in particular to a finite element modeling and force bearing method of a power transmission tower line-tower coupling system. Background technique [0002] The transmission tower is an important part of the overhead transmission line, which plays the role of supporting wires, ground wires and other accessories. According to its use in the line, transmission towers can be divided into straight towers, strain towers, corner towers, transposition towers, spanning towers and terminal towers. According to its structural form, self-supporting transmission towers can be divided into upper-shaped towers, bird-bone-shaped towers, cat-head-shaped towers, wine glass-shaped towers, dry-shaped towers, hexagonal-shaped towers, and umbrella-shaped towers. [0003] The function and structural form of transmission towers change with various factors such as lin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 李勃张都清张广成袁堂青
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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