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...

Full description

Saved in:
Bibliographic Details
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
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2009.2036401