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Non-stationary signals' analysis in power systems. A time-frequency approach

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3 Author(s)
Albu, M. ; Dept. of Electr. Eng., Politehnica Univ., Bucharest, Romania ; Postolache, P. ; Golovanov, C.

In this paper, a brief presentation of the state of the art in Fourier-like domains applied to power quality analysis is made, together with the main results obtained until now with a wavelet approach. Definitions of Walsh immittance, of network' topology in other than sinusoidal spaces and relations between Fourier, windowed-Fourier, Walsh, Gabor and wavelet transforms are presented. The paper is intended to be a guide to power systems engineers that could be overwhelmed by notions coming from such a rapidly developing new area (wavelets) or from the already "mythical" Fourier analysis.

Published in:

Electrotechnical Conference, 2000. MELECON 2000. 10th Mediterranean  (Volume:3 )

Date of Conference:

29-31 May 2000