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Published Article / ENY-ARTICLE-2009-262

Power Quality Analysis of Grid-Connected Wind Turbine System

Janik, P (Wroclaw University of Technology, Poland) ; Lobos, T (Wroclaw University of Technology, Poland) ; Rezmer, J (Wroclaw University of Technology, Poland) ; Sikorski, T (Wroclaw University of Technology, Poland)


Abstract: In this paper time-frequency methods have been investigated for complex investigations of transient states in wind power plants. Application of parallel processing in time and frequency domain brought new findings in description of wind power plants working under transient conditions. Proposed algorithms represents standard Short-Time Fourier Transform (STFT) as well as alternative methods associated with Cohen’s class, called Choi-Williams Distribution (CWD). In order to explore advantages and disadvantages of the method several experiments were performed using model of squirrel-cage induction machine connected directly to the grid. Investigated phenomena concerns power distortion caused by faults in comparison with influence of the wind speed.

Keyword(s): power system harmonics ; signal analysis ; time-frequency analysis ; electric variables estimation ; wind turbine
Note: Computer applications in electrical engineering / ed. by Ryszard Nawrowski. Poznań : Gaudentinum, 2008. pp. 235-247

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Rekord stworzony 2009-10-22, ostatnia modyfikacja 2009-10-22

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