Analysis and Precaution of a 66kV Capacitor Failure

LI Sheng-chuan1; GAO Dian-ying2

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Analysis and Precaution of a 66kV Capacitor Failure

更新时间：2024-09-14

- Analysis and Precaution of a 66kV Capacitor Failure
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 30, Issue 3, Pages: 51-56(2009)
- 作者机构：
  
  1. 辽宁省电力有限公司
  2. 鞍山供电公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM531.3
- Published：2009，
- 稿件说明：
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[1]李胜川,高殿滢.一起66kV电容器故障的分析及预防措施[J].电力电容器与无功补偿,2009,30(03):51-56.

LI SHENG-CHUAN1, GAO DIAN-YING2. Analysis and Precaution of a 66kV Capacitor Failure. [J]. Power capacitor & reactive power compensation, 2009, 30(3): 51-56.
[1]李胜川,高殿滢.一起66kV电容器故障的分析及预防措施[J].电力电容器与无功补偿,2009,30(03):51-56. DOI：

LI SHENG-CHUAN1, GAO DIAN-YING2. Analysis and Precaution of a 66kV Capacitor Failure. [J]. Power capacitor & reactive power compensation, 2009, 30(3): 51-56. DOI：

摘要

论述了一起66 kV电容器组故障的现象、设备损坏情况

通过对电容器解体分析

结合故障录波图、外熔断器运行状况、保护定值的整定等方面对电容器故障的原因进行认真分析、论证

确定了本次事故是由于电容器制造方面存在缺陷而在运行中击穿

但外熔断器未能快速熔断引起重燃

同时保护定值整定违反规程而导致切除故障时间过长

造成单台故障演变成事故、损坏设备增多、损失扩大。针对本次事故所暴露出的问题

从电容器组的设备选型、接线方式、熔断器形式及保护整定等方面提出了相应的措施和建议

对电容器的安全运行有一定的参考价值。

Abstract

This article elaborates a 66 kV capacitor bank breakdown and damage.Through disassembling the capacitor and combining with the fault wave chart

condition of the outer fuse and the protection setting value

the fault causes are analyzed carefully and concluded that breakdown happened during operation due to some defects existed during manufacturing.Meanwhile

the outer fuse could not burning off in time and the protection setting value was not correct are the other two important factors of such fault

which resulted in fault expansion.Aiming to the problems in such fault

some measures and suggestions are given through aspects such as type and connection mode of the capacitor

type of the fuse and protection setting.It has certain reference to the capacitors safe operation.

关键词

并联电容器继电保护接线方式故障

Keywords

Shunted capacitorrelay protectionconnection modefault

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