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Close Accord on DWT Performance and Real-Time Implementation for Protection Applications

In this paper, a simpler and faster algorithm of discrete wavelet transform (DWT) for a digital signal processing (DSP) implementation is proposed and intensively tested. Applicability of real-time implementation of this algorithm is verified. The computational frame in this algorithm is independent...

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Published in:	IEEE transactions on power delivery 2010-10, Vol.25 (4), p.2174-2183
Main Authors:	Darwish, Hatem A, Hesham, Mohammad, Taalab, Abdel-Maksoud I, Mansour, Naema M
Format:	Article
Language:	English
Subjects:	Algorithms Applied sciences Channel noise Computation Connection and protection apparatus Digital signal processing Discrete wavelet transforms Disturbances. Regulation. Protection DSP implementation DWT Electrical engineering. Electrical power engineering Electrical power engineering electromagnetic transient detection Electromagnetic transients Exact sciences and technology Faults Multiresolution analysis Power networks and lines Power system protection Real time Real time systems Sampling Wavelet
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cited_by	cdi_FETCH-LOGICAL-c357t-f43224ebce948f4e730881a34bbad5186471d8e16f34245c34a83122d79e96c23
cites	cdi_FETCH-LOGICAL-c357t-f43224ebce948f4e730881a34bbad5186471d8e16f34245c34a83122d79e96c23
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container_title	IEEE transactions on power delivery
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creator	Darwish, Hatem A Hesham, Mohammad Taalab, Abdel-Maksoud I Mansour, Naema M
description	In this paper, a simpler and faster algorithm of discrete wavelet transform (DWT) for a digital signal processing (DSP) implementation is proposed and intensively tested. Applicability of real-time implementation of this algorithm is verified. The computational frame in this algorithm is independent on the sampling rate, but it depends on the length of the mother wavelet filters. Therefore, signal with any sampling rate can be analyzed with the same computational effort. This implementation algorithm is exploited to investigate the DWT response experimentally. Impact of the mother wavelet, sampling frequency, fault inception angle and the signal transients on the resulted DWT levels is evaluated from the protection perspectives. Considering the DSP channel noise, these factors are strongly affect DWT response especially in high details spike, which the most of the protection applications depended on. Shortcomings of DWT application for protection relays are outlined and corrective recommendations are included.
doi_str_mv	10.1109/TPWRD.2009.2036401
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subjects	Algorithms Applied sciences Channel noise Computation Connection and protection apparatus Digital signal processing Discrete wavelet transforms Disturbances. Regulation. Protection DSP implementation DWT Electrical engineering. Electrical power engineering Electrical power engineering electromagnetic transient detection Electromagnetic transients Exact sciences and technology Faults Multiresolution analysis Power networks and lines Power system protection Real time Real time systems Sampling Wavelet
title	Close Accord on DWT Performance and Real-Time Implementation for Protection Applications
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