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HHT_power-system_power-quality_disturbances-detect

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  • Update : 2012-11-26
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Hilbert-Huang Transform(HHT) is a new non-stationary signal processing technology,including the Empirical Mode Decomposition(EMD) and Hilbert spectral analysis.In this method,arbitrary non-stationary signals was divided into a series data sequence with different characteristic scales after the first EMD treatment,each sequence is called an intrinsic mode function(IMF),and then each IMF component gained corresponding the Hilbert spectrum though Hilbert spectrum analysis,a summary of all Hilbert spectrum assembled to the spectra of the original signal.In essence,this method is a stable processing for non-stationary signal,which decomposed the different fluctuations or trends in the signal in rum,and represented the frequency content of the original signal using the final instantaneous frequency and energy. This paper study a method to detect power quality disturbances based on the HHT,in which the principle and the realization of the HHT and the realization of power quality disturbance
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复杂谐波\emd.m
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....暂降(幅值)\emd.m
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..........时刻)\emd.m
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....中断\3435567788.fig
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间谐波\emd.m
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.虻バ巢╘emd.m
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....中断\emd.m
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基于HHT的暂态电能质量多扰动信号的检测.doc
复杂谐波
复杂暂降(幅值)
复杂暂降(时刻)
复杂中断
间谐波
简单谐波
简单中断
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