Calculation and Prevention of Internal Fault Arc in Medium Voltage Switchgear

LI Ling; LIU Chengxue

doi:10.13296/j.1001-1609.hva.2014.09.023

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Calculation and Prevention of Internal Fault Arc in Medium Voltage Switchgear

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- Calculation and Prevention of Internal Fault Arc in Medium Voltage Switchgear
- High VoltageApparatus Vol. 50, Issue 9, Pages: 131-138(2014)
- 作者机构：
  
  库柏(宁波)电气有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2014.09.023
  CLC： TM591
- Published：2014
- 稿件说明：
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[1]李玲,刘成学.中压开关柜内部故障电弧计算及防护措施[J].高压电器,2014,50(09):131-138.

LI Ling, LIU Chengxue. Calculation and Prevention of Internal Fault Arc in Medium Voltage Switchgear[J]. High voltageapparatus, 2014, 50(9): 131-138.
[1]李玲,刘成学.中压开关柜内部故障电弧计算及防护措施[J].高压电器,2014,50(09):131-138. DOI： 10.13296/j.1001-1609.hva.2014.09.023.

LI Ling, LIU Chengxue. Calculation and Prevention of Internal Fault Arc in Medium Voltage Switchgear[J]. High voltageapparatus, 2014, 50(9): 131-138. DOI： 10.13296/j.1001-1609.hva.2014.09.023.

摘要

中压开关柜内部故障电弧引发的事故是较为严重的常见事故之一

笔者总结了现场事故发生的原因

经过分析计算和试验研究

提出了防止内部故障发生及结构改进的措施

研究表明

合理改进开关柜的外壳结构可有效避免事故的扩大

加装弧光保护装置可有效减少电弧对开关柜的损伤。

Abstract

The causes of some accidents induced by internal fault arc in medium voltage switchgears are analyzed.And an approach for improving the cabinet structure to prevent the internal arc fault is hence proposed via calculation and test of onsite internal fault arc. Experiment demonstrates that improving the structure of the switchgear shell can effectively avoid accident expansion

and adding arc protection device can clearly reduce the damage to switchgear shell.

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