PD Test and Measurement Method of GIS Insulators Based on Cross-reference of the Pulse Current

XU Yang; LIU Weidong; XU Yuan; LI Xing; LI Zhibing; ZHANG Pengfei

doi:10.13296/j.1001-1609.hva.2018.05.014

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PD Test and Measurement Method of GIS Insulators Based on Cross-reference of the Pulse Current

更新时间：2025-04-26

- PD Test and Measurement Method of GIS Insulators Based on Cross-reference of the Pulse Current
- High VoltageApparatus Vol. 54, Issue 5, Pages: 87-90+100(2018)
- 作者机构：
  
  1. 清华大学电机系电力系统及发电设备控制与仿真国家重点实验室
  2. 中国电力科学研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.05.014
  CLC： TM595
- Published：2018
- 稿件说明：
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[1]徐洋,刘卫东,许渊,李星,李志兵,张鹏飞.GIS绝缘件局部放电脉冲电流互参考试验测量方法[J].高压电器,2018,54(05):87-90+100.

XU Yang, LIU Weidong, XU Yuan, et al. PD Test and Measurement Method of GIS Insulators Based on Cross-reference of the Pulse Current[J]. High voltageapparatus, 2018, 54(5): 87-90+100.
[1]徐洋,刘卫东,许渊,李星,李志兵,张鹏飞.GIS绝缘件局部放电脉冲电流互参考试验测量方法[J].高压电器,2018,54(05):87-90+100. DOI： 10.13296/j.1001-1609.hva.2018.05.014.

XU Yang, LIU Weidong, XU Yuan, et al. PD Test and Measurement Method of GIS Insulators Based on Cross-reference of the Pulse Current[J]. High voltageapparatus, 2018, 54(5): 87-90+100. DOI： 10.13296/j.1001-1609.hva.2018.05.014.

摘要

严格的绝缘件检测对于保证GIS（或GIL）设备的制造质量具有非常重要意义。GIS的绝缘件缺陷有可能表现为微小的和偶发的局部放电

采用常规的局部放电检测方法很容易被忽略。文中提出了GIS绝缘件局部放电脉冲电流互参考试验测量方法

采用多个绝缘件并联试验

同步测量每个绝缘件地线上的局部放电脉冲电流

根据各个绝缘件脉冲电流的幅值关系识别和区分绝缘子局部放电和干扰。绝缘件地线的局部放电脉冲电流测量还可以提高测量信噪比和灵敏度。此测量方法可以灵敏地发现绝缘件微小和偶发的局部放电。

Abstract

Strict inspection of the GIS（or GIL）insulation parts is very important for ensuring the GIS manufacturingquality. The partial discharges（PD）of some GIS insulation defects are characterized by weak signal strength andsmall pulse density

and could be possibly missed by the conventional PD measurement method.It is presented inthis paper a new method for PD test and measurement of GIS insulation parts which works based on cross-reference ofthe current pulses. In the method

more than one similar insulator are tested in parallel

the pulse currents in thegrounding ends of each insulator are measured synchronously

and the PD pulses from the insulators are recognizedaccording to the difference of the pulse amplitudes between the insulators. Taking the PD signals from the groundingend of the insulators also improves the SNR and increasrs the sensitivity of PD measurement. By the method the PDof weak strength and small density can be detected.

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