GIS Basin Insulator Defect Analysis Based on Ultra-high Frequency Time-frequency Analysis

LIAO Xinzheng; WANG Hongmei; DING Dengwei; ZHOU Dianbo; ZHANG Xubo; HE Yufeng

doi:10.13296/j.1001-1609.hva.2019.01.008

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GIS Basin Insulator Defect Analysis Based on Ultra-high Frequency Time-frequency Analysis

更新时间：2025-04-26

- GIS Basin Insulator Defect Analysis Based on Ultra-high Frequency Time-frequency Analysis
- High VoltageApparatus Vol. 55, Issue 1, Pages: 47-53(2019)
- 作者机构：
  
  1. 南方电网科学研究院
  2. 国网四川电力科学研究院
  3. 国网四川省电力公司
  4. 国网四川检修公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2019.01.008
  CLC： TM216;TM855
- Published：2019
- 稿件说明：
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[1]廖新征,王红梅,丁登伟,周电波,张旭波,何宇峰.基于特高频时频分析的GIS盆式绝缘子缺陷分析[J].高压电器,2019,55(01):47-53.

LIAO Xinzheng, WANG Hongmei, DING Dengwei, et al. GIS Basin Insulator Defect Analysis Based on Ultra-high Frequency Time-frequency Analysis[J]. High voltageapparatus, 2019, 55(1): 47-53.
[1]廖新征,王红梅,丁登伟,周电波,张旭波,何宇峰.基于特高频时频分析的GIS盆式绝缘子缺陷分析[J].高压电器,2019,55(01):47-53. DOI： 10.13296/j.1001-1609.hva.2019.01.008.

LIAO Xinzheng, WANG Hongmei, DING Dengwei, et al. GIS Basin Insulator Defect Analysis Based on Ultra-high Frequency Time-frequency Analysis[J]. High voltageapparatus, 2019, 55(1): 47-53. DOI： 10.13296/j.1001-1609.hva.2019.01.008.

摘要

为更有效在现场开展GIS局部放电检测

及时准确发现设备内部缺陷

特别是盆式绝缘子局部放电缺陷

文中研究了基于特高频时频定位分析的GIS局部放电综合定位方法。将多通道时延定位法和多通道小波时频分析法联合应用

通过局部放电特高频信号的时域和频谱变化特征

结合设备内部结构、装配工艺等情况

实现GIS局部放电综合精确定位。该方法在某500kV变电站220kV GIS带电检测中进行了应用

精确定位一处盆式绝缘子表面放电缺陷。表明文中研究的基于特高频时频定位分析的GIS局部放电综合定位方法有助于准确定位GIS内部缺陷

针对性指导设备检修工作

缩短检修时间

有效提高检修效率。

Abstract

For upgrading partial discharge on-site detect level of gas insulated switchgear（GIS）

detecting internaldefects of equipments quickly and exactly

especially partial discharge defect of basin insulator

this article re-searched on partial discharge synthetic location method for GIS based on ultra-high frequency time-frequency loca-tion analysis. Construction of multi-channel signals time delay location method and multi-channel time-frequencyanalysis method based on wavelet transform

according to the partial discharge ultra-high frequency signal time andfrequency variations

GIS partial discharge synthetic location can be achieved combination of equipment internalstructure and assembly process. In 220kV GIS on-site detection of one 500kV substation

this method located sur-face discharge of a basin insulator exactly. It has confirmed partial discharge synthetic location method for GIS basedon ultra-high frequency time-frequency location analysis can locate the GIS internal defects. The application can su-pervise equipment maintenance pertinently

shorten equipment maintenance time and improve equipment maintenance efficiency.

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Noise Suppression Method for Transformer Partial Discharge Based on Multi-stage Threshold in Synchro-squeezing Domain

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