Phase Resolved Partial Discharge Pattern of Free Conductive Particle Defects in GIS

WU Zhicheng; ZHANG Qiaogen; SONG Jiajie; DU Qiandong; LI Xiao’ang; LI Zhibing

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Phase Resolved Partial Discharge Pattern of Free Conductive Particle Defects in GIS

更新时间：2025-12-08

- Phase Resolved Partial Discharge Pattern of Free Conductive Particle Defects in GIS
- Vol. 45, Issue 6, Pages: 1995-2002(2019)
- 作者机构：
  
  1. 西安交通大学电力设备电气绝缘国家重点实验室
  2. 中国电力科学研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：30 June 2019，
  
  Published：2019
- 稿件说明：
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WU Zhicheng, ZHANG Qiaogen, SONG Jiajie, et al. Phase Resolved Partial Discharge Pattern of Free Conductive Particle Defects in GIS[J]. 2019, 45(6): 1995-2002.
DOI：

WU Zhicheng, ZHANG Qiaogen, SONG Jiajie, et al. Phase Resolved Partial Discharge Pattern of Free Conductive Particle Defects in GIS[J]. 2019, 45(6): 1995-2002. DOI：

摘要

GIS内自由导电微粒的存在是对GIS绝缘的最大威胁

如何检测GIS内自由导电微粒缺陷成为提高GIS设备运行可靠性亟待解决的问题之一。为此

搭建了GIS内自由导电微粒局部放电研究平台

明确了自由导电微粒造成的局部放电信号与微粒运动的关系

推导得到了理论局部放电相位图谱

该结果与实验结果相符。根据上述模型提出了GIS内自由导电微粒缺陷识别方法

并对现场工频局部放电试验的检测有效性进行研究。结果表明

GIS内自由导电微粒缺陷的理论局部放电相位图谱为正弦带状包络

呈现出对称性强、重复率低、放电全相位分布等特点;现场工频局部放电试验能够检测出不超过1 mm的铝质自由微粒

对GIS内自由导电微粒缺陷具有较高的检测有效性。研究为GIS内自由导电微粒缺陷的识别技术提供了理论支持。

Abstract

The presence of free conductive particles in GIS is the greatest threat to GIS insulation. How to detect foreign matter defects in GIS

especially free conductive particles

is one of the problems to be urgently solved to improve the reliability of GIS equipment. Consequently

we established a research platform of partial discharge of free conductive particles in GIS

and analyzed the relationship between the partial discharge signal and the particle motion caused by free conductive particles. The theoretical phase resolved partial discharge pattern was deduced

which is in accordance with the experimental results. According to the model

the identification method for free conductive particle defects in GIS was proposed

and the effectiveness of free conducting particles defects in GIS was studied. The results show that the phase resolved partial discharge of free conducting particles in GIS is a sinusoidal envelope band. The pattern shows strong symmetry

low repetition rate and full phase distribution. The on-site power-frequency partial discharge tests can be performed to detect free aluminum particles less than 1 mm

and are highly effective in detecting the free conducting particles defects in GIS. This study provides theoretical support for the identification of free conductive particles defect in GIS.

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