Format: HTML | BibTeX | DC | EndNote | NLM | MARC | MARCXML
Published Article / ENY-ARTICLE-2008-038

Spectrum estimation of non- stationary signals in power systems

Leonowicz, Z (Wroclaw University of Technology, Poland) ; Lobos, T (Wroclaw University of Technology, Poland) ; Rezmer, J (Wroclaw University of Technology, Poland)

2003-02-26

Abstract: Time-varying spectra of non-stationary time-series commonly used are spectrograms from the Short-Time Fourier Transform (STFT). The most prominent limitation of the Fourier Transform is that of frequency resolution. To overcome the limitation the Wavelet Transform, Wigner-Ville Distribution and the Min-Norm subspace method have been applied for spectrum estimation of non-stationary signals caused by switching on capacitor banks and by a short circuit at the output of a frequency converter. Investigation results confirm the advantages of the advanced methods.

Keyword(s): fault diagnosis ; power systems ; pulse width modulated power converters ; subspace methods ; time–frequency analysis ; wavelet transforms ; Wigner distributions
Note: Proceedings of the 5th International Conference on Power Systems Transients. IPST 2003 , New Orleans, Louisiana, USA, September 28th - October 2nd, 2003. pp. 18


Fulltext : http://zet10.ipee.pwr.wroc.pl/record/46/files/

Cited by: try citation search for ENY-ARTICLE-2008-038

Rekord stworzony 2008-03-11, ostatnia modyfikacja 2008-03-11

Podobne rekordy


 
Osoby, które oglądały tę stronę, oglądały również:
(907)  Impact of Distributed Generation on Electrical Power Network - Khan, U N - ENY-ARTICLE-2008-142
(900)  Adaptacyjne sieci neuronowe w zastosowaniu do identyfikacji stanu układów elektrycznych - Kostyla, P - ENY-THESIS-2008-005
(898)  Proceedings of the Int. Conference "7th EEEIC International Workshop on Environment and Electrical Engineering" - Schwarz, H et al - ENY-PREPRINT-2008-008
(876)  Parametric methods for time-frequency analysis of electric signals - Leonowicz, Z - ENY-BOOK-2008-001
(875)  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.