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000000312 001__ 312
000000312 037__ $$aENY-ARTICLE-2009-251
000000312 041__ $$aeng
000000312 088__ $$aRZ I07/2002/I-048
000000312 100__ $$aLeonowicz, Z$$uWroclaw University of Technology, Poland
000000312 245__ $$aModern spectral analysis of non-stationary signals in electrical power systems
000000312 260__ $$c2001-11-23
000000312 300__ $$a6p
000000312 500__ $$a14th Power Systems Computation Conference, PSCC, Sevilla, Spain, 24-28 June 2002.
000000312 520__ $$aA novel approach to harmonic and interharmonic analysis, based on the “subspace” methods, is proposed. Min-norm harmonic retrieval method is an example of high-resolution eigenstructure-based methods. The Wigner-Ville representation was also tested for time-frequency analysis of electric signals. The high-resolution methods do not show the disadvantages of the traditional tools and allow exact estimation of the interharmonic frequencies. To investigate the methods several experiments were performed using real and simulated signals, current waveforms at the output of a simulated frequency converter, shunt reactor compensated transmission lines, and compensated AC arc furnace installation. For comparison, similar experiments were repeated using the FFT. The comparison proved the superiority of the new methods. 
000000312 6531_ $$atime-frequency representation
000000312 6531_ $$asubspace methods
000000312 6531_ $$aWigner-Ville distribution
000000312 6531_ $$aarc furnace
000000312 6531_ $$afrequency converter
000000312 6531_ $$aseries-compensated transmission lines
000000312 700__ $$aLobos, T$$uWroclaw University of Technology, Poland
000000312 700__ $$aSchegner, P$$uTechnical University of Dresden, Germany
000000312 8560_ $$fleon99@pwr.wroc.pl
000000312 8564_ $$uhttp://zet10.ipee.pwr.wroc.pl/record/312/files/$$zAccess to Fulltext
000000312 909CO $$ooai:zet10.pwr.wroc.pl:312$$pglobal
000000312 980__ $$aARTICLE