Analysis of non-sinusoidal non-stationary modes of electric networks based on the wavelet transformation

Abstract

Subject of research: methods for calculating and analyzing non-sinusoidal non-stationary modes of electrical networks.
 Purpose of research: development of a method for calculating active and reactive power, as well as the power of distortion of non-sinusoidal modes of electrical networks based on the theory of wavelet transform.
 Object of research: electrical networks and power supply systems containing a non-linear load, which is the cause of non-sinusoidal modes.
 Methods of research: packet wavelet transform of currents and voltages; theory of electrical circuits.
 Main results of research: The paper proposes the idea of using the wavelet transform for frequency decomposition of currents and voltages of non-sinusoidal non-stationary modes of electrical networks. Based on the wavelet coefficients, it is proposed to calculate the active, reactive power and distortion power of non-sinusoidal modes.