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首页> 外文会议>International conference on computer and electrical engineering >Calculation of Electric Field Distribution along AC Transmission Lines Porcelain Insulators Based on Electric Field Symmetry Analysis
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Calculation of Electric Field Distribution along AC Transmission Lines Porcelain Insulators Based on Electric Field Symmetry Analysis

机译：基于电场对称分析的AC传输线瓷绝缘子电场分布计算

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摘要

The electric field of transmission lines insulators is open field. Open field calculation must demarcate the border. It's a boundary value problem. The calculation accuracy of open field is in contradiction to computational complexity. According to symmetry property analysis the computational complexity can be reduced. The real and imaginary parts of three-phase voltage phasors have symmetry property respectively. Based on the symmetry property and symmetrical structure of three-phase electric power system, the electric field computation module could be reduced to only 1/4 of the general model, so the computational complexity could be reduced greatly. In order to analyze the electric field distribution along the insulators, the computation module included insulators, transmission lines, tower, floor, and 90m interspaces around the insulators. The numerical calculation method was FEM. The calculation results were consistent with the factual electric field distribution. The method could be used for modeling of other three-phase electric field. The advantage of the model was the computational complexity was lower than other FEM with truncation boundary conditions, but the calculation accuracy was equal.
机译：传输线绝缘体的电场是开放的场。开场场计算必须划分边框。这是一个边界值问题。开放场的计算精度与计算复杂性矛盾。根据对称性分析，可以减少计算复杂性。三相电压相量的真实和虚部分别具有对称性。基于三相电力系统的对称性和对称结构，电场计算模块可以减少到一般模型的1/4，因此可以大大减少计算复杂性。为了分析沿着绝缘体的电场分布，计算模块包括绝缘体，传输线，塔，地板和绝缘体周围的90m间隙。数值计算方法是有关的。计算结果与事实电场分布一致。该方法可用于建模其他三相电场。该模型的优点是计算复杂性低于具有截短边界条件的其他有限元件，但计算精度相等。

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