Analysis of Oil Tank Heating Defect of 110kV Capacitor Voltage Transformer

CHEN Kunhan; ZHANG Weiping; LI Runhong

doi:10.13296/j.1001-1609.hva.2015.02.026

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Analysis of Oil Tank Heating Defect of 110kV Capacitor Voltage Transformer

更新时间：2025-04-26

- Analysis of Oil Tank Heating Defect of 110kV Capacitor Voltage Transformer
- High VoltageApparatus Vol. 51, Issue 2, Pages: 152-156(2015)
- 作者机构：
  
  广东电网公司东莞供电局
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2015.02.026
  CLC： TM451
- Published：2015
- 稿件说明：
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[1]陈坤汉,张伟平,黎润洪.110kV电容式电压互感器油箱发热缺陷分析[J].高压电器,2015,51(02):152-156.

CHEN Kunhan, ZHANG Weiping, LI Runhong. Analysis of Oil Tank Heating Defect of 110kV Capacitor Voltage Transformer[J]. High voltageapparatus, 2015, 51(2): 152-156.
[1]陈坤汉,张伟平,黎润洪.110kV电容式电压互感器油箱发热缺陷分析[J].高压电器,2015,51(02):152-156. DOI： 10.13296/j.1001-1609.hva.2015.02.026.

CHEN Kunhan, ZHANG Weiping, LI Runhong. Analysis of Oil Tank Heating Defect of 110kV Capacitor Voltage Transformer[J]. High voltageapparatus, 2015, 51(2): 152-156. DOI： 10.13296/j.1001-1609.hva.2015.02.026.

摘要

电容式电压互感器（CVT）是变电站的重要设备

设备停电预试时通过测量其介质损耗因数和电容量可以及时发现设备的绝缘缺陷。但是由于其绝缘结构的特殊性

使得诊断变得更加复杂。针对这个问题

笔者通过红外线测温时发现的一起CVT发热缺陷

进行电气试验检查分析

以及进行了解体检查

对缺陷部位进行判断和验证

并提出了相应的防范措施:加强红外测温巡检

提高产品质量

加强在线监测。

Abstract

Insulation defects of capacitor voltage transformer（CVT） can be rapidly detected by measuring its dielectric loss factor and capacitance through preventive test in the condition of outage. Due to its particular insulation structure

the diagnosis becomes more complex. In this study

a heating defect of CVT oil tank was found in an infrared temperature measurement process. Subsequently

electrical tests and disassembly inspection were conducted to determine the defect position. Accordingly

some precautions are offered

such as strengthening infrared temperature inspection

improving product quality

and intensifying on-line monitoring.

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Related Institution

State Grid Corporation of China

Guilin Power Capacitor Co., Ltd.

China Electric Power Research Institute

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