Pulse Extraction for Partial Discharge with Double Channels with Independent Component Analysis

司文荣; 李军浩; 梁永春; 袁鹏; 李延沐; 李彦明

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Pulse Extraction for Partial Discharge with Double Channels with Independent Component Analysis

更新时间：2025-12-08

- Pulse Extraction for Partial Discharge with Double Channels with Independent Component Analysis
- Vol. 42, Issue 10, Pages: 1264-1268+1294(2008)
- 作者机构：
  
  西安交通大学电气工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM835.4
- Online First：10 October 2008，
  
  Published：2008
- 稿件说明：
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司文荣, 李军浩, 梁永春, et al. Pulse Extraction for Partial Discharge with Double Channels with Independent Component Analysis[J]. 2008, 42(10): 1264-1268+1294.
DOI：

司文荣, 李军浩, 梁永春, et al. Pulse Extraction for Partial Discharge with Double Channels with Independent Component Analysis[J]. 2008, 42(10): 1264-1268+1294. DOI：

摘要

简单介绍了独立成分分析(ICA)基本模型的假设、含混性问题及模型估计的等变化性.根据局部放电脉冲序列幅值的超高斯分布特性以及实际工况下的其他条件

得出了将ICA基本模型用于强背景白噪声下微弱局部放电脉冲信号提取的可行性.针对IEC60270规定的标准脉冲电流法

基于双通道超宽带检测

对试品放电状态下的脉冲提取进行了仿真

对直流下油纸绝缘针板模型进行局部放电实验

并给出直流下局部放电脉冲提取的ICA含混性消除方法.实验结果表明

该方法能够提取出被白噪声完全淹没的局部放电脉冲信号

可以恢复出局部放电波形之间相对幅值关系和单个脉冲波形以及脉冲极值所对应的时间点等重要局部放电信息.

Abstract

The assumption

ambiguities

and solution of basic independent component analysis(ICA)model are briefly introduced. According to the features of white noise(gaussian)and partial discharge(PD)signals(supergaussian)on the probability distribution of magnitude

and the IEC 60270 standard PD measurement method

it indicates that the basic ICA model is feasible to suppress white noise of PD pulse signals. The simulation and on field tests for PD pulses extraction using ultra-wideband(UWB)detection technique with double channels are carried out

respectively. And the ambiguities elimination method for ICA model to extract PD pulses under HVDC is also presented. The results show that PD pulses are able to be exactly extracted from the strong white noise with keeping PD pulses amplitude of the relative relationship

the maximum amplitude corresponding to the time point

and the other important information of PD pulses.

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references

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