DocumentCode :
870432
Title :
Discrete-Fourier-transform-based technique for removal of decaying DC offset from phasor estimates
Author :
Sidhu, T.S. ; Zhang, X. ; Albasri, F. ; Sachdev, M.S.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, Ont., Canada
Volume :
150
Issue :
6
fYear :
2003
Firstpage :
745
Lastpage :
752
Abstract :
A technique to suppress the negative effect of a decaying DC offset on phasor estimates using a digital Fourier transform algorithm is presented. The proposed technique is based on evaluation of the decaying DC component in the signal. The technique is suitable for all prevailing systems and fault conditions. The performance of the technique is evaluated in both the time and frequency domains. Simulation results showing the effectiveness of this new technique are presented. The proposed technique is further evaluated when it is used in a distance relay design.
Keywords :
discrete Fourier transforms; frequency-domain analysis; power system parameter estimation; time-domain analysis; decaying DC offset; discrete-Fourier-transform-based technique; electrical power systems; fault conditions; frequency domain; negative effect; phasor estimates; prevailing systems; time domain;
fLanguage :
English
Journal_Title :
Generation, Transmission and Distribution, IEE Proceedings-
Publisher :
iet
ISSN :
1350-2360
Type :
jour
DOI :
10.1049/ip-gtd:20030943
Filename :
1262373
Link To Document :
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