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)


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 :

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

Record created 2008-03-11, last modified 2008-03-11

Ähnliche Datensätze

Benutzer, die diese Seite angeschaut haben, haben auch angeschaut:
(1013)  Impact of Distributed Generation on Electrical Power Network - Khan, U N - ENY-ARTICLE-2008-142
(1011)  Adaptacyjne sieci neuronowe w zastosowaniu do identyfikacji stanu układów elektrycznych - Kostyla, P - ENY-THESIS-2008-005
(1003)  Proceedings of the Int. Conference "7th EEEIC International Workshop on Environment and Electrical Engineering" - Schwarz, H et al - ENY-PREPRINT-2008-008
(987)  Parametric methods for time-frequency analysis of electric signals - Leonowicz, Z - ENY-BOOK-2008-001
(975)  Zadania 1 Podstawy Elektrotechniki Automatyka i Robotyka - Hejke, I et al - ENY-TEACHING-2008-020

Dieses Dokument bewerten:
Als Erster ein Review für dieses Dokument verfassen

Dokument diskutieren:
Diskussion über Dokument starten.