Ultrasonic Detection of Partial Discharge on Typical Defects in GIS

LI Da-jian1; LIANG Ji-zhong1; BU Ke-wei2; YANG Jing-gang1; LI Yan-ming1

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Ultrasonic Detection of Partial Discharge on Typical Defects in GIS

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- Ultrasonic Detection of Partial Discharge on Typical Defects in GIS
- High VoltageApparatus Vol. 45, Issue 1, Pages: 72-75(2009)
- 作者机构：
  
  1. 西安交通大学电气工程学院
  2. 青海海东供电公司电能计量检测中心
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM835
- Published：2009
- 稿件说明：
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[1]黎大健,梁基重,步科伟,杨景刚,李彦明.GIS中典型缺陷局部放电的超声波检测[J].高压电器,2009,45(01):72-75.

LI Da-jian1, LIANG Ji-zhong1, BU Ke-wei2, et al. Ultrasonic Detection of Partial Discharge on Typical Defects in GIS[J]. High voltageapparatus, 2009, 45(1): 72-75.
[1]黎大健,梁基重,步科伟,杨景刚,李彦明.GIS中典型缺陷局部放电的超声波检测[J].高压电器,2009,45(01):72-75. DOI：

LI Da-jian1, LIANG Ji-zhong1, BU Ke-wei2, et al. Ultrasonic Detection of Partial Discharge on Typical Defects in GIS[J]. High voltageapparatus, 2009, 45(1): 72-75. DOI：

摘要

为了研究超声波法在GIS中局部放电检测中的应用

在实验室以一段220 kV电压等级的GIS母线腔体为试验对象

设计和模拟了GIS中典型的局部放电模型

使用超声波方法对其放电信号进行检测。实验结果表明

不同缺陷类型的超声信号在波形、幅值和PRPD图上会呈现出不同的特点

通过对GIS腔体不同位置的检测

可以精确的定位出缺陷位置。研究表明

超声的方法在检测GIS局部放电信号时有较好的灵敏度和精确的定位

检测结果为今后对GIS局部放电模式识别提供了试验依据。

Abstract

For detecting partial discharge of SF6 gas insulation switchgear（GIS） with the ultrasonic method

a 220 kV GIS bus bar cavity was taken as an object to design and simulate the typical partial discharge models in GIS.PD signals on different defects were thus detected with the ultrasonic method.The experimental results indicated that the ultrasonic signals of different defects showed different characteristics in waveform

amplitude and phase resolved partial discharge chart.The PD source could be accurately located with the ultrasonic method by changing the location of sensor.The research demonstrate that the ultrasonic method has better sensitivity and accuracy in PD source localization

which is helpful in PD pattern recognition for GIS.

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School of Electrical Engineering, Xi’an Jiaotong University

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