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In the literature, wavelet techniques are proposed for the power quality analysis of power systems. The choice of most suitable mother wavelet, which is a key to any meaningful wavelet analysis, depends on the application and no general rule exists for the selection. This paper demonstrates the selection of an appropriate mother wavelet for power system harmonic analysis. Different mother wavelets...
The present work shows a distinct comparison between wavelet packet transform (WPT) and discrete wavelet transform (DWT) for quantization of power system harmonics. The analysis has been carried out on two sets of actual tested waveforms obtained using power quality analyzer. The results obtained using WPT and DWT are compared with IEEE Standard 1459-2000 based values and percentage error has been...
Fourier transform (FT) based techniques have been traditionally used for power system harmonics analysis. A recent alternative approach of wavelet transform (WT) is applied for non-sinusoidal signal analysis which has been found very useful in power quality studies. The problem of root mean square (RMS) value calculation is an important issue in harmonic analysis. This paper uses a statistical approach...
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