Analysis of Breakdown in Capacitance Voltage Divider Component of 500 kV CVT

WU Dong-wen; ZHOU Hong-gang

doi:10.14044/j.1674-1757.pcrpc.2011.06.016

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Analysis of Breakdown in Capacitance Voltage Divider Component of 500 kV CVT

更新时间：2024-09-14

- Analysis of Breakdown in Capacitance Voltage Divider Component of 500 kV CVT
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 32, Issue 6, Pages: 74-76(2011)
- 作者机构：
  
  江西省电力公司超高压分公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2011.06.016
  CLC： TM451.2
- Published：2011，
- 稿件说明：
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[1]吴冬文,周洪刚.500kV CVT电容分压器元件击穿故障分析[J].电力电容器与无功补偿,2011,32(06):74-76+79.

WU DONG-WEN, ZHOU HONG-GANG. Analysis of Breakdown in Capacitance Voltage Divider Component of 500 kV CVT. [J]. Power capacitor & reactive power compensation, 2011, 32(6): 74-76.
[1]吴冬文,周洪刚.500kV CVT电容分压器元件击穿故障分析[J].电力电容器与无功补偿,2011,32(06):74-76+79. DOI： 10.14044/j.1674-1757.pcrpc.2011.06.016.

WU DONG-WEN, ZHOU HONG-GANG. Analysis of Breakdown in Capacitance Voltage Divider Component of 500 kV CVT. [J]. Power capacitor & reactive power compensation, 2011, 32(6): 74-76. DOI： 10.14044/j.1674-1757.pcrpc.2011.06.016.

摘要

简述了一起500 kV电容式电压互感器（CVT）电容分压器元件击穿导致二次电压偏低故障发生的过程

结合CVT结构和工作原理对其进行了分析

并对电容器进行解剖

发现电容分压器元件被击穿

从而电容升高、二次输出电压降低。通过对CVT的现场更换

消除故障

电压信号显示正常。

Abstract

In this paper

the breakdown of capacitance voltage divider element causing fault due to low secondary voltage in a 500 kV capacitor voltage transformer（CVT）is introduced.The fault is analyzed based on the structure and operation principle of CVT.The capacitor is disassembled

found the capacitance voltage divider component breakdown

the capacitance is increased and the secondary output voltage decreased.Through the replacement of CVT at site

the fault is eliminated and normal voltage signal is indicated.

关键词

电容式电压互感器（CVT）二次电压电容分压器元件击穿

Keywords

capacitor voltage transformer（CVT）secondary voltagecapacitance voltage divider componentbreakdown

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