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《Journal of Shanghai Jiaotong University》 2005-12
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The Parameter Identification of Interharmonics Based on Wavelet Transform and Prony Algorirhm

DING Yi-feng~1,CHENG Hao-zhong~1,SUN Yi-bin~2,YAN Jian-yong~2(1.Dept.of Electrical Eng.,Shanghai Jiaotong Univ.,Shanghai 200030,China;2.Shanghai Urban Power Supply Company,Shanghai 200080)  
Interharmonics acquired at actual working spot usually includes large amount of stochastic noise.Extraction of the interharmonics signal characteristic information will be influenced greatly if the signal is not effectively denoised.Based on the discussion of the wavelet soft-threshold method,the interharmonics signal is denoised in pretreatment.Meanwhile,the parameters of interharmonics are identified by the Prony method and the characteristic information is extracted.The analysis results show that the signal denoising applying wavelet method is in favor of enhancing the analysis accuracy of its parameter(identification.)
【Fund】: 高等学校优秀青年教学科研奖励计划资助项目
【CateGory Index】: TM711
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