Causes Analysis and Countermeasures on Abnormal Secondary Voltage of CVT

LI Guang; SHI Peijie; SUN Peng; ZU Shutao

doi:10.14044/j.1674-1757.pcrpc.2014.06.018

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Causes Analysis and Countermeasures on Abnormal Secondary Voltage of CVT

更新时间：2024-09-14

- Causes Analysis and Countermeasures on Abnormal Secondary Voltage of CVT
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 35, Issue 6, Pages: 81-85(2014)
- 作者机构：
  
  国网河北省电力公司检修分公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2014.06.018
  CLC： TM451.2
- Published：2014，
- 稿件说明：
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[1]李光,石培杰,孙鹏,祖树涛.CVT二次电压异常原因及对策分析[J].电力电容器与无功补偿,2014,35(06):81-85.

LI GUANG, SHI PEIJIE, SUN PENG, et al. Causes Analysis and Countermeasures on Abnormal Secondary Voltage of CVT. [J]. Power capacitor & reactive power compensation, 2014, 35(6): 81-85.
[1]李光,石培杰,孙鹏,祖树涛.CVT二次电压异常原因及对策分析[J].电力电容器与无功补偿,2014,35(06):81-85. DOI： 10.14044/j.1674-1757.pcrpc.2014.06.018.

LI GUANG, SHI PEIJIE, SUN PENG, et al. Causes Analysis and Countermeasures on Abnormal Secondary Voltage of CVT. [J]. Power capacitor & reactive power compensation, 2014, 35(6): 81-85. DOI： 10.14044/j.1674-1757.pcrpc.2014.06.018.

摘要

介绍一起500 k V电容式电压互感器（简称CVT）二次电压异常故障

通过现场检查、红外测温及带电测试等手段

确定二次电压异常的原因为二次回路小刀闸触头氧化所致

总结了二次电压出现异常时查找故障的方法和顺序

提出一种取代二次小刀闸的改造方案

该方案能有效提高设备安全运行状态

同时对提高关口电能计量水平有积极意义。

Abstract

In this paper

the secondary voltage fault of a 500 k V capacitor voltage transformer（CVT）is introduced.The abnormal cause of the secondary voltage is

throughout site inspection

infrared temperature measurement and live testing etc

determined as the contact oxidation of the secondary circuit isolating switch.The method and sequence for finding the abnormal fault of secondary voltage is summarized

one kind of modification plan on replacing secondary isolating switch is proposed

which can improve effectively healthy operation condition of the equipment and

at the same time

has positive significance in enhancing electric energy metering level CVT.

关键词

二次电压原因分析小刀闸氧化

Keywords

secondary voltagecause analysisisolating switchoxidization

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Related Institution

School of Electrical Engineering,Xi′an Jiaotong University,Xi′an

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