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Partial discharge detection in power transformers is discussed using a new approach that exploit the broad band of the Rogowski coils and the potential of two signal processing tools: discrete wavelet transform and empirical mode decomposition. Detecting and analyzing incipient activities of partial discharge can provide useful information to diagnostics and prognostics about transformer insulation...
The method integrated by independent component analysis (ICA) and empirical mode decomposition (EMD) is proposed in this paper, which can separate the signal from white noise. We used this method to eliminate the white noise from electric power system signals. The detailed courses of construction of virtual noise channel used EMD are described. Based on the characteristic of signals and noise, the...
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