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Matlab/simulink based wavelet transform technique in waveform distortion of electrical power quality problems

Author(s)
Aslam P. Memon Department of Electrical Engineering, Quaid-e-Awam University of Engineering, Science & Technology, Nawabshah, Pakistan
M. Usman Keerio Department of Electrical Engineering, Quaid-e-Awam University of Engineering, Science & Technology, Nawabshah, Pakistan
Zubair A. Memon Department of Electrical Engineering, Quaid-e-Awam University of Engineering, Science & Technology, Nawabshah, Pakistan
Aslam P. Memon Department of Electrical Engineering, Quaid-e-Awam University of Engineering, Science & Technology, Nawabshah, Pakistan
M. Usman Keerio Department of Electrical Engineering, Quaid-e-Awam University of Engineering, Science & Technology, Nawabshah, Pakistan
Zubair A. Memon Department of Electrical Engineering, Quaid-e-Awam University of Engineering, Science & Technology, Nawabshah, Pakistan
Abstract
The distorted information of waveform distortion (WFD) signals which is a type of electrical power quality (EPQ) problems is conventionally achieved with the assessment of root mean square (RMS) values, utilizing fast Fourier transformation (FFT) technique. This paper proposes Matlab/Simulink based wavelet transform (WT) technique instead of traditionally used fast Fourier transform method for root mean square assessment, in waveform distortion signals. The proposed technique of wavelet transform is simpler and more suitable for waveform distortion signals. This has been achieved, when actual RMS values of signals are compared with the RMS values obtained from Fourier and wavelet transformation calculations. Fourier transformation shows more errors in the calculation of Interharmonics distortion when compared with WT technique. But in the case of stationary power system harmonics, Fourier transformation is more suitable and accurate for calculating the harmonic distortions and WT shows only good applicability and accuracy.
Publication Details
Page(s) 15-20
DOI DOI not available
Published Journal: Quaid-e-Awam University Research Journal of Engineering, Science and Technology, Volume: 10, Issue: 2, Year: 2011

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