Structure Design and Electric Field Simulation Research on 500kV Anti-icing Flash Insulator with Lightning Protection Function

WU Wei; JIANG Zhenglong; LU Jiazheng; FANG Zhen; HU Jianping; WANG Bowen

doi:10.13296/j.1001-1609.hva.2018.01.002

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Structure Design and Electric Field Simulation Research on 500kV Anti-icing Flash Insulator with Lightning Protection Function

更新时间：2025-04-26

- Structure Design and Electric Field Simulation Research on 500kV Anti-icing Flash Insulator with Lightning Protection Function
- High VoltageApparatus Vol. 54, Issue 1, Pages: 9-15(2018)
- 作者机构：
  
  国网湖南省电力公司防灾减灾中心电网输变电设备防冰减灾国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.01.002
  CLC： TM216
- Published：2018
- 稿件说明：
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[1]吴伟,蒋正龙,陆佳政,方针,胡建平,王博闻.具有防雷功能的500kV防冰闪绝缘子结构设计及电场仿真研究[J].高压电器,2018,54(01):9-15.

WU Wei, JIANG Zhenglong, LU Jiazheng, et al. Structure Design and Electric Field Simulation Research on 500kV Anti-icing Flash Insulator with Lightning Protection Function[J]. High voltageapparatus, 2018, 54(1): 9-15.
[1]吴伟,蒋正龙,陆佳政,方针,胡建平,王博闻.具有防雷功能的500kV防冰闪绝缘子结构设计及电场仿真研究[J].高压电器,2018,54(01):9-15. DOI： 10.13296/j.1001-1609.hva.2018.01.002.

WU Wei, JIANG Zhenglong, LU Jiazheng, et al. Structure Design and Electric Field Simulation Research on 500kV Anti-icing Flash Insulator with Lightning Protection Function[J]. High voltageapparatus, 2018, 54(1): 9-15. DOI： 10.13296/j.1001-1609.hva.2018.01.002.

摘要

雷击和覆冰是输电线路面临的两大自然灾害

严重威胁电网的稳定运行。文中将避雷器和绝缘子结合

通过绝缘段雷电冲击和工频闪络试验

设计出一种新的500kV防冰防雷复合绝缘子

并利用有限元法对该500kV防冰防雷复合绝缘子电场分布进行仿真计算

研究了清洁和覆冰工况。结果表明:局部高场强区域集中在高压段、绝缘段和避雷段交界处

最大场强为18.1kV/cm

满足现场运行要求;结合间隙雷电冲击试验

采用带1.8 m均压环间隙的绝缘段和避雷器串联具有较好的防雷保护效果。

Abstract

Lightning and ice-coating are two natural disasters faced by transmission line

serious threat to the stableoperation of power grid. Combined arrester with insulation

the paper design a kind of 500kV lightning and icingprotection composite insulator with the method of lightning impulse and AC flashover test;in addition

the electricalfield analyzes on 500kV lightning and icing protection composite insulator is made by finite element method. Thestudy on clean and icing conditions found that the local high field strength region focus on high voltage section as wellas the junction between insulation section and lightning protection section;meanwhile

the maximum field strength is18.1kV/cm

which meet the requirements of the field operation. By means of gap lightning impulse tests

it can obtaina better lightning protection effect when an insulation segment with 1.8 meters corona ring gap is in series with arrester.

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