Analysis and Treatment on Abnormal Secondary Voltage of Capacitor Voltage Transformers

HONG Le-zhou; WU Yi-zhi; LI Jing-xiang; LIU Wei

doi:10.14044/j.1674-1757.pcrpc.2012.03.015

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Analysis and Treatment on Abnormal Secondary Voltage of Capacitor Voltage Transformers

更新时间：2024-09-14

- Analysis and Treatment on Abnormal Secondary Voltage of Capacitor Voltage Transformers
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 33, Issue 3, Pages: 73-76(2012)
- 作者机构：
  
  南方电网超高压输电公司广州局
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2012.03.015
  CLC： TM451
- Published：2012，
- 稿件说明：
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[1]洪乐洲,吴贻志,李靖翔,刘伟.电容式电压互感器二次电压异常分析处理[J].电力电容器与无功补偿,2012,33(03):73-76.

HONG LE-ZHOU, WU YI-ZHI, LI JING-XIANG, et al. Analysis and Treatment on Abnormal Secondary Voltage of Capacitor Voltage Transformers. [J]. Power capacitor & reactive power compensation, 2012, 33(3): 73-76.
[1]洪乐洲,吴贻志,李靖翔,刘伟.电容式电压互感器二次电压异常分析处理[J].电力电容器与无功补偿,2012,33(03):73-76. DOI： 10.14044/j.1674-1757.pcrpc.2012.03.015.

HONG LE-ZHOU, WU YI-ZHI, LI JING-XIANG, et al. Analysis and Treatment on Abnormal Secondary Voltage of Capacitor Voltage Transformers. [J]. Power capacitor & reactive power compensation, 2012, 33(3): 73-76. DOI： 10.14044/j.1674-1757.pcrpc.2012.03.015.

摘要

介绍了刚投运3个月的500 kV电容式电压互感器二次电压出现异常时的处理方法

分析得出了二次电压异常的原因是由于CVT内部均压电容击穿

通过对CVT进行试验和解体检查

证明了原材料的选用和制造工艺是造成均压电容击穿的主要原因。最后对500 kV电容式电压互感器的运行维护和产品生产提出了建议。

Abstract

In this article

the treatment method in case of abnormal secondary voltage of 500 kV capacitor voltage transformers which just puts into operation for three months is introduced;the abnormal secondary voltage is due to the breakdown of internal grading capacitance in the CVT.Through test of CVT and disassembly inspection

it is proved that the main cause of grading capacitance breakdown is the selection of raw material and manufacturing process.Finally

the suggestions for operation

maintenance and production of 500 kV capacitor voltage transformers have been proposed.

关键词

电容式电压互感器（CVT）介损电容器击穿

Keywords

capacitor voltage transformer（CVT）dielectric losscapacitorsbreakdown

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