• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2014, Vol. 35 ›› Issue (11): 73-78.doi: 10.3969/j.issn.1000-7229.2014.11.012

• 输配电技术 • 上一篇    下一篇

覆冰220 kV四伞裙复合绝缘子电场分布仿真分析

蒋志敏1,陈天翔1,韩强2   

  1. 1.福建省高电压重点实验室(厦门理工学院),福建省厦门市 361024;2.许继(厦门)智能电器设备有限公司,福建省厦门市 361101
  • 出版日期:2014-11-01
  • 作者简介:蒋志敏(1989)女,硕士研究生,研究方向为高电压与绝缘技术; 陈天翔(1966),男,教授,研究方向为电力设备绝缘在线监测技术; 韩强(1975),男,教授级高工,从事高压电器产品研发。
  • 基金资助:

    厦门市重大科技项目(3502Z20111008)。

Simulation Analysis of Electric Field Distribution of 220 kV Icing Composite Insulator with Four Sheds

JIANG Zhimin, CHEN Tianxiang, HAN Qiang   

  1. 1. Key Laboratory for High Voltage,Xiamen University of Technology, Xiamen 361024, Fujian Province, China;2. XuJi(Xiamen)Intelligent Switchgear Manufacturing Co., Ltd., Xiamen 361101, Fujian Province, China
  • Online:2014-11-01

摘要:

针对国内外缺乏对覆冰220 kV四伞裙复合绝缘子电场分布研究的现状,利用Ansoftmaxwell有限元分析软件模拟分析了不同冰凌长度、均压环参数和位置对220 kV四伞裙复合绝缘子电场分布的影响。结果表明:(1)湿冰状态下冰凌与伞裙间隙1 mm时,冰凌桥接复合绝缘子不会发生放电现象,非桥接且系统过电压时有放电危险;(2)均压环能够显著改善高压端与第一大伞间的电场分布;(3)均压环与金具连接点垂直距离为0 mm,外径306 mm、管径36 mm时高压端和高压端附近冰凌间隙最大场强达到较好配合。

关键词: 覆冰, 四伞裙, 复合绝缘子, 冰凌长度, 均压环, 仿真分析

Abstract:

Aiming at the few investigation of 220 kV icing composite insulator with four sheds at home and abroad, this paper analyzed the influence of icicle length and grading ring parameter, position on the electric field distribution of 220 kV icing composite insulator with four sheds with using the finite element analysis software Ansoftmaxwell. The results show that: (1) under the icing condition, when the gap between wet iced and large shed is 1 mm, the composite insulator bridged with icicle will not discharge when its large sheds, but it will have discharge risk under over voltage when the composite insulator is not bridged with icicle; (2) grading ring can significantly improve the electric field distribution between high voltage side and the first large shed; (3) the electric field distribution of the gap between high voltage terminal and nearby icicle can match best when grading ring’s vertical distant from fitting connection point is 0 mm, its outer diameter is 306 mm and pipe diameter is 36 mm.

Key words: icing, four sheds, composite insulator, length of icicle, grading ring, simulation analysis