Algorithms of packet wavelet transform for power determination under nonsinusoidal modes
| Autor: | D. S. Osipov, N. N. Dolgikh, V. N. Goryunov, Dmitry V. Kovalenko |
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| Rok vydání: | 2016 |
| Předmět: |
Discrete wavelet transform
Lifting scheme 020209 energy Stationary wavelet transform Second-generation wavelet transform Wavelet transform 02 engineering and technology Wavelet packet decomposition Wavelet 0202 electrical engineering electronic engineering information engineering Electronic engineering Harmonic wavelet transform Algorithm Mathematics |
| Zdroj: | 2016 Dynamics of Systems, Mechanisms and Machines (Dynamics). |
| Popis: | A correct definition of mode parameters is of great importance for examination of power quality indices under non-sinusoidal modes, these parameters being effective values of current, voltage, active and reactive power. A wavelet transform is a later method of digital signal processing. This method enables information about signal to be saved both in amplitude-frequency and time space. The technique of defining effective current values of non-sinusoidal transient mode is presented. This technique assumes the preliminary frequency decomposition of the examining signal using the packet wavelet transform. Modernization of existing mathematical models of instantaneous, active and reactive power calculation as well as distortion power under non-sinusoidal modes based on the packet wavelet transform is carried out. The comparison of simulation modeling results shows qualitative coincidence with analytical mode calculation. |
| Databáze: | OpenAIRE |
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