Investigation of Improvement of Sensitivity Verification of Partial Discharge Detection Using UHF Method in GIS

DING Dengwei; GAO Wensheng; LIU Weidong

doi:10.13296/j.1001-1609.hva.2014.08.009

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Investigation of Improvement of Sensitivity Verification of Partial Discharge Detection Using UHF Method in GIS

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- Investigation of Improvement of Sensitivity Verification of Partial Discharge Detection Using UHF Method in GIS
- High VoltageApparatus Vol. 50, Issue 8, Pages: 14-18(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.2014.08.009
  CLC： TM595
- Published：2014
- 稿件说明：
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[1]丁登伟,高文胜,刘卫东.GIS局部放电特高频检测灵敏度的检验方案细化研究[J].高压电器,2014,50(08):14-18.

DING Dengwei, GAO Wensheng, LIU Weidong. Investigation of Improvement of Sensitivity Verification of Partial Discharge Detection Using UHF Method in GIS[J]. High voltageapparatus, 2014, 50(8): 14-18.
[1]丁登伟,高文胜,刘卫东.GIS局部放电特高频检测灵敏度的检验方案细化研究[J].高压电器,2014,50(08):14-18. DOI： 10.13296/j.1001-1609.hva.2014.08.009.

DING Dengwei, GAO Wensheng, LIU Weidong. Investigation of Improvement of Sensitivity Verification of Partial Discharge Detection Using UHF Method in GIS[J]. High voltageapparatus, 2014, 50(8): 14-18. DOI： 10.13296/j.1001-1609.hva.2014.08.009.

摘要

为了检验局部放电特高频检测装置的灵敏度

笔者对目前广泛应用的CIGRE方案进行了实验研究。通过对脉冲源发射的特高频信号时域和频域特征分析

检验了脉冲源与实际放电源的等效性。试验发现脉冲源激发的特高频信号峰峰值随输出电压升高呈线性增长

与悬浮金属体作为放电标准源激发的特高频信号峰峰值与放电量的关系曲线类似。笔者结合对GIS中局部放电激发和传播特性的研究

提出了细化CIGRE关于特高频检测系统灵敏度检验草案的建议。

Abstract

To verify the sensitivity of the ultra high frequency（UHF） detection

the GIGRE method for the verification of sensitivity

which is used worldwide

was applied in the paper. According to the analysis of the characteristics of the time domain and frequency domain of the UHF signal excited by the pulse generator

the equivalence of the pulse generator and the actual partial discharge source was verified. It indicates that the peak-to-peak value of the UHF signal induced by the pulse generator increases linearly with output voltage

which is similar with the linear correlation curve between the apparent charge and the peak-to-peak value of the UHF signal excited by the floating metal. In this paper

combined with the research about the excitation and propagation of PD in GIS

several proposals were presented to improve the GIGRE method for the sensitivity verification of the UHF PD detection system.

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