Spectral leakage and picket-fence effects associated with the system fundamental frequency variation and improperly selected sampling time window prevents a direct application of the DFT algorithm with a constant sampling rate. In particular it’s very difficult to detect low level interharmoincs and subharmonics. In this paper we compare two methods, proposed in literature, evaluating the detection capability and accuracy in frequency spectrum estimation. Several tests in different condition has been effected for the comparison.
Caciotta, M., Giarnetti, S., Leccese, F., Leonowicz, Z. (2010). Comparison between DFT, Adpative Window DFT and EDFT for Power Quality Frequency Spectrum Analysis. In Modern Electric Power Systems - MEPS 2010 (pp.1-5). WROCLAW : Institute of Electrical Power Engineering, I-8 Wroclaw University of Technology.
Comparison between DFT, Adpative Window DFT and EDFT for Power Quality Frequency Spectrum Analysis
CACIOTTA, Maurizio;GIARNETTI, SABINO;LECCESE, Fabio;
2010-01-01
Abstract
Spectral leakage and picket-fence effects associated with the system fundamental frequency variation and improperly selected sampling time window prevents a direct application of the DFT algorithm with a constant sampling rate. In particular it’s very difficult to detect low level interharmoincs and subharmonics. In this paper we compare two methods, proposed in literature, evaluating the detection capability and accuracy in frequency spectrum estimation. Several tests in different condition has been effected for the comparison.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
