基于小波消噪的充油电缆局部放电抗干扰技术研究Research of Anti-interference Technique of PD in Oil-filled Cable Based on Wavelet
黄宏新,沈洪
HUANG Hong-xin,SHEN Hong(Hangzhou Municipal Electric Power Bureau
摘要(Abstract)：
在分析高压充油电缆局部放电信号及白噪声干扰特征的基础上,利用小波消噪技术从白噪声中提取局部放电信号,通过仿真研究,证实了消噪模型的可行性,确定了小波消噪的分解尺度,实测信号的消噪处理证实了消噪算法在充油电缆局部放电在线监测上的有效性。
Based on the characteristic analysis of the PD signals in the high voltage oil-filled cable and white noise,the method that PD pulses is drawn from white noise by using the wavelet transform of threshold function is presented.The wavelet transform scale is confirmed by the PD signals analog experiment.The results from above analysis and processing PD pulses of high voltage oil-filled cable show that wavelet denoising is suitable for processing the on-site PD signal in High Voltage Oil-filled Cable.
关键词(KeyWords)：
小波消噪;局部放电;高压充油电缆
wavelet denoising;PD;high voltage oil-filled cable
基金项目(Foundation):
作者(Author):
黄宏新,沈洪
HUANG Hong-xin,SHEN Hong(Hangzhou Municipal Electric Power Bureau
DOI: 10.19585/j.zjdl.2010.04.003
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