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Analysis of effectiveness of using wavelet transformations for reactive power compensation

In recent years, there has been a significant increase in energy consumption and the algorithmization of the functioning of control devices, protection and diagnostics of electric power facilities and systems, which are based on new methods of analysis and synthesis, coming to the fore. Higher harmonics, which occur due to an increase in the share of electric receivers that have a nonlinear volt-ampere characteristic, lead to additional losses in current-carrying parts, a decrease in the service life of elements, and so on. These negative consequences reduce the energy efficiency of individual energy systems. In addition, there is a decrease in economic interest of consumers in part of reactive power compensation, which leads to a reduced energy supply reliability and efficiency of electricity in general. The mathematical apparatus of the wavelet transform is increasingly being used to analyze and describe the dynamics of complex nonlinear reactive power compensation processes. Wavelets are used as a hierarchical basis for analyzing perturbations in wide frequency ranges under conditions of non-stationary processes under study. In contrast to the Fourier transform, the wavelet transform provides a three-dimensional interpretation of the current (voltage, power) function under study, primarily in physical space (instantaneous value, time) and in frequency space (amplitude, frequency). In this article, the authors analyze the effectiveness of using wavelet transformations in the field of reactive power compensation for non-sinusoidal non-stationary modes of electric power systems.