Influence of Fitting Structure on Local Electric Field Intensity Around Pantograph Supporting Insulators of Electric Multiple Units

REN Limiao; MA Jianqiao; XU Jinyang; WANG Bixia; SUN Cheng

doi:10.13296/j.1001-1609.hva.2019.08.030

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Influence of Fitting Structure on Local Electric Field Intensity Around Pantograph Supporting Insulators of Electric Multiple Units

更新时间：2025-04-26

- Influence of Fitting Structure on Local Electric Field Intensity Around Pantograph Supporting Insulators of Electric Multiple Units
- High VoltageApparatus Vol. 55, Issue 8, Pages: 212-217(2019)
- 作者机构：
  
  1. 兰州交通大学自动化与电气工程学院
  2. 北京交通大学
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2019.08.030
  CLC： TM216
- Published：2019
- 稿件说明：
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[1]任丽苗,马建桥,徐金阳,王碧霞,孙成.金具结构对动车组受电弓支柱绝缘子附近区域电场分布的影响分析[J].高压电器,2019,55(08):212-217.

REN Limiao, MA Jianqiao, XU Jinyang, et al. Influence of Fitting Structure on Local Electric Field Intensity Around Pantograph Supporting Insulators of Electric Multiple Units[J]. High voltageapparatus, 2019, 55(8): 212-217.
[1]任丽苗,马建桥,徐金阳,王碧霞,孙成.金具结构对动车组受电弓支柱绝缘子附近区域电场分布的影响分析[J].高压电器,2019,55(08):212-217. DOI： 10.13296/j.1001-1609.hva.2019.08.030.

REN Limiao, MA Jianqiao, XU Jinyang, et al. Influence of Fitting Structure on Local Electric Field Intensity Around Pantograph Supporting Insulators of Electric Multiple Units[J]. High voltageapparatus, 2019, 55(8): 212-217. DOI： 10.13296/j.1001-1609.hva.2019.08.030.

摘要

动车组车顶受电弓支柱绝缘子高压侧金具结构会影响绝缘子表面电场强度的分布均匀度

电场不均匀会造成绝缘子闪络频次增加。为此

基于静电场理论

联合Solidworks软件和有限元软件静电场模块仿真分析了金具结构对绝缘子附近空气域及绝缘子表面电位、电场分布变化的影响

优化设计金具结构并试验验证其效果。研究结果表明

现有连接方式下高压侧金具连接处附近场强分布不均匀

优化后的连接金具可有效降低局部区域电位梯度

电位梯度的降低有助于减小闪络故障的发生频次。文中研究结果可为后续动车组受电弓绝缘子结构优化设计及试验验证提供参考。

Abstract

The metal fitting structure on high voltage side of the EMU（electric multiple units）roof pantograph post insulator affects the distribution uniformity of the electric field intensity on the insulator surface

and the uneven electric field may lead to the increase of the flashover frequency on the insulator.In this study

the software Solidworks and the electrostatic field module of finite element software are employed to simulate and analyze the influences of the metal fitting structure on the air domain near the insulator

as well as the surface potential and electric field distribution on the insulator

on the basis of the electrostatic field theory.The structure of the fitting is optimized and the effect is verified by experiments.The results show that the electric field intensity distribution at the fitting joint on high voltage side is uneven under the existing connection mode

and the optimized connecting fittings can effectively reduce the local potential gradient to decrease the frequency of flashover faults.This study may provide a reference for structural optimization design and experimental verification of pantograph insulators in EMU.

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