Typical Failure Analysis and Design Improvement of Spout for 40.5 kV Switchgear in Operation

PAN Yifan; JIANG Jiongting; LIU Yuchun; TAN Dongxian

doi:10.13296/j.1001-1609.hva.2020.11.013

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Typical Failure Analysis and Design Improvement of Spout for 40.5 kV Switchgear in Operation

更新时间：2025-04-26

- Typical Failure Analysis and Design Improvement of Spout for 40.5 kV Switchgear in Operation
- High VoltageApparatus Vol. 56, Issue 11, Pages: 78-83(2020)
- 作者机构：
  
  1. 国网盐城供电公司
  2. 国网宁波供电公司
  3. 上海雷博司电气股份有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.11.013
  CLC： TM591
- Published：2020
- 稿件说明：
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[1]潘一璠,姜炯挺,刘玉春,谭东现.在运40.5 kV开关柜用触头盒的典型故障分析与设计改善[J].高压电器,2020,56(11):78-83.

PAN Yifan, JIANG Jiongting, LIU Yuchun, et al. Typical Failure Analysis and Design Improvement of Spout for 40.5 kV Switchgear in Operation[J]. High voltageapparatus, 2020, 56(11): 78-83.
[1]潘一璠,姜炯挺,刘玉春,谭东现.在运40.5 kV开关柜用触头盒的典型故障分析与设计改善[J].高压电器,2020,56(11):78-83. DOI： 10.13296/j.1001-1609.hva.2020.11.013.

PAN Yifan, JIANG Jiongting, LIU Yuchun, et al. Typical Failure Analysis and Design Improvement of Spout for 40.5 kV Switchgear in Operation[J]. High voltageapparatus, 2020, 56(11): 78-83. DOI： 10.13296/j.1001-1609.hva.2020.11.013.

摘要

对在运40.5 kV空气绝缘开关柜用触头盒的典型故障失效机理进行详细的分析

根据在运触头盒存在的设计缺陷并结合运行工况

对现有触头盒进行结构设计改善和环氧树脂材料耐电痕性改善

提出了一种新型双屏蔽触头盒设计方案和相应的绝缘性能评估试验项目与试验方法。根据新设计方案制作的产品

各项性能测试结果都符合设计要求。新型双屏蔽触头盒已量产和投运多年

无任何异常。

Abstract

A detailed analysis of the typical failure mechanism of the contact box for 40.5 kV air-insulated switchgear in operation is carried out.According to the design defects existing in the contact box and the operating conditions

the structural design of the existing contact box is improved and the epoxy resin material has improved tracking resistance

and a new double shielded contact box design scheme and corresponding insulation performance evaluation test items and test methods are proposed.According to the new design scheme

all performance test results meet the design requirements.The new double shielded contact box has been mass-produced and put into operation for many years without any abnormalities.

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