Title :
The usage of Discrete Wavelet Transform in voltage and current waveforms analysis in Three-Phase Systems with Balanced or Unbalanced Loads
Author :
Apetrei, Viorel ; Filote, Constantin ; Graur, Adrian
Author_Institution :
Electr. Eng. & Comput. Sci. Fac, Stefan cel Mare Univ. of Suceava, Suceava, Romania
Abstract :
The balanced and unbalanced three-phase power components definitions contained in the IEEE standard 1459-2010 are obtained by processing the voltage and current signals with the reconstruction of the original signals using Fourier Transform (FT). This method provides only an amplitude-frequency spectrum loosing time-related information and is unable to deal with non-stationary waveforms. This paper proposes an comparative application of IEEE standard definitions and Discrete Wavelet Transform (DWT) definition for the measurement of effective root mean square (RMS) values in Three-Phase Systems with Balanced or Unbalanced Loads. DWT preserves all information on time and frequency in the analysed waveforms and reduces the computational effort by dividing the frequency spectrum into bands or levels.
Keywords :
Fourier transforms; IEEE standards; discrete wavelet transforms; power measurement; DWT; FT; Fourier transform; IEEE standard 1459-2010; RMS value; amplitude frequency spectrum; balanced load; balanced three phase power component; current waveform analysis; discrete wavelet transform; nonstationary voltage waveform analysis; root mean square value; unbalanced load; Data acquisition; Discrete wavelet transforms; Frequency conversion; IEEE standards; Time-frequency analysis; Transducers; Discrete Wavelet Transform (DWT); Hall transducer; balanced/unbalanced load; data acquisition system; root mean square (RMS); three-phase systems;
Conference_Titel :
Ecological Vehicles and Renewable Energies (EVER), 2014 Ninth International Conference on
Conference_Location :
Monte-Carlo
Print_ISBN :
978-1-4799-3786-8
DOI :
10.1109/EVER.2014.6844062
