Investigation of Correlation Between UHF Signal and PD Severity in GIS

DING Dengwei; GAO Wensheng; LIU Weidong

doi:10.13296/j.1001-1609.hva.2014.09.004

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Investigation of Correlation Between UHF Signal and PD Severity in GIS

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- Investigation of Correlation Between UHF Signal and PD Severity in GIS
- High VoltageApparatus Vol. 50, Issue 9, Pages: 6-11(2014)
- 作者机构：
  
  1. 国网四川省电力公司电力科学研究院
  2. 清华大学电机系电力系统及发电设备控制和仿真国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2014.09.004
  CLC： TM595
- Published：2014
- 稿件说明：
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[1]丁登伟,高文胜,刘卫东.GIS中局部放电特高频信号与放电严重程度的关联分析[J].高压电器,2014,50(09):6-11.

DING Dengwei, GAO Wensheng, LIU Weidong. Investigation of Correlation Between UHF Signal and PD Severity in GIS[J]. High voltageapparatus, 2014, 50(9): 6-11.
[1]丁登伟,高文胜,刘卫东.GIS中局部放电特高频信号与放电严重程度的关联分析[J].高压电器,2014,50(09):6-11. DOI： 10.13296/j.1001-1609.hva.2014.09.004.

DING Dengwei, GAO Wensheng, LIU Weidong. Investigation of Correlation Between UHF Signal and PD Severity in GIS[J]. High voltageapparatus, 2014, 50(9): 6-11. DOI： 10.13296/j.1001-1609.hva.2014.09.004.

摘要

局部放电激发的特高频信号大小与放电严重程度紧密相关

笔者利用220 kV GIS设备

采用特高频检测法和IEC 60270—2000检测法同时对多种典型局部放电源进行试验。通过分析特高频信号的时域峰峰幅值与局部放电量之间的关联

发现不同类型局部放电源所激发的特高频信号峰峰值与视在放电量的对应关系存在显著差异。针对不同局部放电源特有的物理结构

通过对放电机理的对比分析

给出了不同缺陷激发的特高频信号峰峰值与视在放电量关系不一致原因的定性解释。

Abstract

The magnitude of ultra-high frequency（UHF）signal caused by partial discharge（PD）closely relates to the severity of PD. In this study

in order to understand the intrinsic correlation between the UHF signal and the severity of PD

different typical PD sources were tested on a 220 kV GIS with the UHF measurement method and the measurement technique in the standard IEC 60270—2000. The correlation between the apparent discharge and the peak-to-peak amplitude of the UHF signal in time domain was analyzed. The results indicate that different PD source shows diverse correlation between the apparent discharge and the peak-to-peak amplitude of UHF signal.Considering the particular structure of each PD source

the discharge mechanisms of the PD sources were analyzed comparatively to explain the difference in the correlations.

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