Time-Frequency Analysis of Distorted Electric Signals using a Complex Space-Phasor
Leonowicz, Z (Wroclaw University of Technology, Poland)
Abstract: We consider applying non-parametric and parametric methods for calculation of time-frequency representation of non-stationary electric waveforms. Space phasor is applied as a complex representation of 3-phase signals and visualization of the spectrum of positive and negative-sequence components. We compare the uncertainty of measurements using described time-frequency representations, as well as a widely used Fourier techniques. Proposed methods allow tracking instantaneous frequency as well as magnitude of non-stationary signals in power systems. Possible applications in diagnosis and power quality area are targeted.
Note: Proceedings of the 7th Int. Conference EEEIC 2008, Cottbus, 5-11.05.2008, pp. 21-23
Fulltext : http://zet10.ipee.pwr.wroc.pl/record/87/files/
Cited by: try citation search for ENY-PREPRINT-2008-004
Record created 2008-03-16, last modified 2008-05-31
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