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http://yadda.icm.edu.pl:80/baztech/element/bwmeta1.element.baztech-article-BPOK-0032-0078

Czasopismo

Przegląd Elektrotechniczny

Tytuł artykułu

Measuring power system harmonics and interharmonics by envelope spectrum analysis

Autorzy Xiong, J.  Wang, B. 
Treść / Zawartość http://pe.org.pl/
Warianty tytułu
PL Pomiary harmonicznych i interharmonicznych w systemach mocy metodą analizy spektralnej obwiedni
Języki publikacji EN
Abstrakty
EN An envelope spectrum analysis-based algorithm for harmonics and interharmonics estimation is proposed. First the envelope is extracted with narrow band Hilbert transform. Then the spectrum of the envelope and the harmonic components are calculated with windowing and interpolation method. Finally the interharmonic parameters are restored according to amplitude modulation equation. The proposed method has two distinguish features, first, it is able to confirm if the calculated interharmonic components do exist, and second, it is not affected by the spectral leakage caused from the harmonics. Several simulation examples are given to demonstrate the precision, effectiveness, and feasibility.
PL Zaproponowano algorytm analizy widmowej umożliwiający określanie składowych harmonicznych. Najpierw wydzielana jest obwiednia przy wykorzystaniu wąskopasmowej transformaty Hilberta. Następnie obliczane jest widomo obwiedni i składowych harmonicznych metodami interpolacyjnymi. Wreszcie parametry interharmonicznych są odtwarzane na podstawie równania modulacji amplitudowej. Zaproponowana metoda ma dwie istotne zalety – umożliwia obliczanie składowych interharmonicznych i nie jest obciążona wpływem przecieku od harmonicznych. Zaprezentowano kilka przykładów symulacji potwierdzających skuteczność metody.
Słowa kluczowe
PL analiza widmowa   wydzielanie obwiedni   dyskretna transformata Fouriera  
EN harmonic analysis   interharmonic   envelope extraction   discrete Fourier transform   spectral leakage  
Wydawca Wydawnictwo SIGMA-NOT
Czasopismo Przegląd Elektrotechniczny
Rocznik 2010
Tom R. 86, nr 12
Strony 319--324
Opis fizyczny Bibliogr. 23 poz., rys., tab,
Twórcy
autor Xiong, J.
autor Wang, B.
Bibliografia
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