Format: HTML | BibTeX | DC | EndNote | NLM | MARC | MARCXML
Published Article / ENY-ARTICLE-2009-253

Analysis of non-stationary electric signals using the S-transform

Leonowicz, Z (Wroclaw University of Technology, Poland) ; Lobos, T (Wroclaw University of Technology, Poland) ; Wozniak, K (Wroclaw University of Technology, Poland)


Abstract: Purpose – The purpose of this paper is to compare the accuracy of tracking the amplitude and frequency changes of non-stationary electric signals. Design/methodology/approach – Short-time fourier transform (STFT) and S-transform algorithms were applied to analyze non-stationary signals originating from switching of capacitor banks in a power system. Findings – The S-transform showed possibilities of sharp localization of basic component, and allowed improvement of tracking dynamism the transient components in comparison to STFT. Practical implications – S-transform is a better tool for the analysis non-stationary waveforms in power systems and its properties can be used for diagnostic and power quality applications. Originality/value – The dynamic tracking of the changes in time and frequency of real-like signals originating from a power system were investigated in this paper.

Keyword(s): Electric power transmission ; Fourier transforms ; Electric power systems ; S-transform
Note: Compel, Vol. 28, No. 1, 2009

Fulltext :

Cited by: try citation search for ENY-ARTICLE-2009-253

Rekord stworzony 2009-02-20, ostatnia modyfikacja 2009-02-21

Podobne rekordy

Osoby, które oglądały tę stronę, oglądały również:
(1168)  Proceedings of the Int. Conference "7th EEEIC International Workshop on Environment and Electrical Engineering" - Schwarz, H et al - ENY-PREPRINT-2008-008
(1143)  Impact of Distributed Generation on Electrical Power Network - Khan, U N - ENY-ARTICLE-2008-142
(1135)  Parametric methods for time-frequency analysis of electric signals - Leonowicz, Z - ENY-BOOK-2008-001
(1134)  Adaptacyjne sieci neuronowe w zastosowaniu do identyfikacji stanu układów elektrycznych - Kostyla, P - ENY-THESIS-2008-005
(1127)  Evaluation of compensation devices of DC arc furnaces using advanced spectrum estimation methods - Bracale, A et al - ENY-ARTICLE-2008-011

Oceń ten dokument:
Bądź pierwszy i oceń ten dokument.

Dyskusja nad tym dokumentem:
Rozpocznij dyskusję o tym dokumencie.