基于小波变换的局部放电软阈值消噪方法的研究
在阐述小波变换原理的基础上介绍了两种局部放电检测的软阈值消噪方法:Stein无偏风险阈值法和平均阈值法,并利用MATLAB对加入白噪声的局部放电信号模型进行仿真研究。结果表明,stein无偏风险阈值法对单指数振荡局部放电模型消噪效果好,但对于其他三种局放模型,波形失真严重,滤噪效果较差;利用平均阈值法能更好地实现从白噪声干扰中提取原信号。
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| Main Authors: | , , , , |
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| Format: | Artigo |
| Language: | Chinês |
| Published: |
Editorial Department of Insulators and Surge Arresters
2008-01-01
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| Series: | Dianci bileiqi |
| Subjects: | |
| Online Access: | http://www.dcblq.com/thesisDetails#10.16188/j.isa.1003-8337.2008.06.008 |
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