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《Transactions of China Electrotechnical Society》 2006-05
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Construction of the Orthogonal Support Complex Wavelet for Distilling Partial Discharge Signals in GIS

Tang Ju1 Xie Yanbin1 Zhu Wei2 Wei Gang1 (1. Chongqing University Chongqing 400044 China 2. Zhejiang Jiaxing Electric Power Bureau (office) Corp. Jiaxing 314001 China)  
This paper analyses the advantages of complex wavelet. According to the construction conditions of orthonormal wavelet, by remaining amplitude-spectrum characteristic of real wavelet filter and changing its phase-frequency characteristic, complex wavelets is constructed with the same amplitude-frequency characteristic and different phase-frequency characteristic. And then the correctness of this method is verified and the steps in detail are presented. Finally, db4 complex wavelet is constructed and used to extract the PDs from white noise.
【Fund】: 国家自然科学基金(50577069);; 国家电网公司(SGKJ[2003]301)资助项目。
【CateGory Index】: TM595
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