【摘要】 为了提取局部放电信号,提出一种基于各向异性扩散的局部放电噪声抑制方法.根据局部放电信号的特点构造了新的扩散函数,比经典的扩散函数更能有效地抑制白噪声和窄带干扰,并且保持相同的运算速度.相比于常规的小波去噪方法,该方法不受小波函数和小波分解层数选取的限制,能直接应用于空域,更加简单、有效.更多还原

【Abstract】 In order to extract partial discharge signals(PD),this paper proposes a new method based on anisotropic diffusion.According to the characteristics of partial discharge signals,a new diffusion function is constructed.Compared with the classical diffusion functions,using the proposed diffusion function can eliminate the noise more effectively,and maintain the same computing speed.Compared with the conventional wavelet based denoising algorithms,the proposed method is not limited by the selection of the wavelet function and the optimal decomposition level of wavelet.And our method is directly implemented in the spatial domain,which makes the filter process simpler.更多还原