Combined Diagnosis of Partial Discharge for GIS Cable Terminal

REN Zhigang; CONG Guang; LI Huachun; FENG Yi; LI Wei; DUAN Dapeng; HAN Liang

doi:10.13296/j.1001-1609.hva.2014.03.009

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Combined Diagnosis of Partial Discharge for GIS Cable Terminal

更新时间：2025-04-26

- Combined Diagnosis of Partial Discharge for GIS Cable Terminal
- High VoltageApparatus Vol. 50, Issue 3, Pages: 44-49+57(2014)
- 作者机构：
  
  1. 北京电力科学研究院
  2. 北京市电力公司运检部
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2014.03.009
  CLC： TM855.2
- Published：2014
- 稿件说明：
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[1]任志刚,丛光,李华春,冯义,李伟,段大鹏,韩良.GIS电缆终端缺陷综合局放诊断与分析[J].高压电器,2014,50(03):44-49+57.

REN Zhigang, CONG Guang, LI Huachun, et al. Combined Diagnosis of Partial Discharge for GIS Cable Terminal[J]. High voltageapparatus, 2014, 50(3): 44-49+57.
[1]任志刚,丛光,李华春,冯义,李伟,段大鹏,韩良.GIS电缆终端缺陷综合局放诊断与分析[J].高压电器,2014,50(03):44-49+57. DOI： 10.13296/j.1001-1609.hva.2014.03.009.

REN Zhigang, CONG Guang, LI Huachun, et al. Combined Diagnosis of Partial Discharge for GIS Cable Terminal[J]. High voltageapparatus, 2014, 50(3): 44-49+57. DOI： 10.13296/j.1001-1609.hva.2014.03.009.

摘要

笔者结合实际工作中发现的一起GIS电缆终端典型局放异常事例

介绍了采用高频、特高频等局放检测手段对局放源进行初步定位

利用高速采集示波器通过读取脉冲时延的方法对局放源进行精确定位

并在实验室对局放检测与定位结果进行了验证

最终应用CT扫描的方法准确地查找到GIS电缆终端存在的气隙缺陷。

Abstract

Taking a typical partial discharge（PD）fault at a GIS cable terminal for example

the high frequency and ultra-high frequency PD detection methods as well as other approaches are adopted to preliminarily position the partial discharge source

then the source is accurately positioned by reading the pulse delay on a high-speed acquisition oscillograph. This positioning method is verified by experiment. Subsequently

the air-gap defect in the GIS cable terminal is detected accurately via CT scanning.

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