Accidents Analyses of Porcelain Post Insulators of 220 kV Tubular Busbar

LI Xin; HE Zhiqiang; SHAN Zhouping; LIU Xingwen; DUAN Jianjia

doi:10.13296/j.1001-1609.hva.2015.05.037

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Accidents Analyses of Porcelain Post Insulators of 220 kV Tubular Busbar

更新时间：2025-04-26

- Accidents Analyses of Porcelain Post Insulators of 220 kV Tubular Busbar
- High VoltageApparatus Vol. 51, Issue 5, Pages: 199-204(2015)
- 作者机构：
  
  国网湖南省电力公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2015.05.037
  CLC： TM216
- Published：2015
- 稿件说明：
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[1]李欣,何智强,单周平,刘兴文,段建家.220kV管母用瓷支柱绝缘子运行事故分析[J].高压电器,2015,51(05):199-204.

LI Xin, HE Zhiqiang, SHAN Zhouping, et al. Accidents Analyses of Porcelain Post Insulators of 220 kV Tubular Busbar[J]. High voltageapparatus, 2015, 51(5): 199-204.
[1]李欣,何智强,单周平,刘兴文,段建家.220kV管母用瓷支柱绝缘子运行事故分析[J].高压电器,2015,51(05):199-204. DOI： 10.13296/j.1001-1609.hva.2015.05.037.

LI Xin, HE Zhiqiang, SHAN Zhouping, et al. Accidents Analyses of Porcelain Post Insulators of 220 kV Tubular Busbar[J]. High voltageapparatus, 2015, 51(5): 199-204. DOI： 10.13296/j.1001-1609.hva.2015.05.037.

摘要

管型母线用瓷支柱绝缘子运行环境恶劣

断裂事故时有发生

及时查清事故原因并提出解决方法

对于保障电网安全可靠稳定运行具有重要的意义。笔者通过对5起220 kV管母用瓷支柱绝缘子运行事故的简要介绍

分析了这几起事故的异同特点

根据现场调查和试验分析

从瓷质质量、设计选型、安装方式、运行维护等全过程角度

对可能导致220 kV管母用瓷支柱绝缘子断裂的原因做了详细分析

指出了瓷质欠佳、抗弯强度不足、固定金具选型不当、管母固定方式错误、大风天气是造成220 kV管母用瓷支柱绝缘子断裂的主要原因

并提出了预防管母用瓷支柱绝缘子断裂的方法。

Abstract

To reveal fracture accidents of porcelain post insulators of a tubular busbar for safe

stable and reliable operation of a power system

five accidents of porcelain post insulators of a 220 kV tubular busbar are analyzed.Field investigations and experimental analyses are conducted to analyze the features of these accidents

and possible causes are discussed in detail with respect to porcelain quality

type selection

installation

operation

and maintenance. It is concluded that the major causes of the fracture accidents of the porcelain post insulators include poor quality of porcelain material

insufficient bending strength

wrong fixing mode of the tubular busbar

improper selection of busbar support type

and sustained heavy wind. Moreover

some corresponding countermeasures against the fracture accidents of the post porcelain insulators are given.

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