Development of an interface for calculating the non-sinusoidal coefficient with adaptive window Fourier transform and the power part of the active filter in the high-voltage network of a mining and processing plant

Objective. The purpose of this study is to develop a software tool with a graphical user interface designed for analyzing and calculating the non-sinusoidal coefficient using adaptive window Fourier transform, as well as determining the configuration of the power part of the active filter.

Method. Adaptive windowed Fourier transform is used to analyze the harmonic composition of current and voltage in a high-voltage network, which ensures high accuracy of spectral analysis. This makes it possible to effectively identify and evaluate the coefficient of non-sinusoidal signals. The configuration of the power part of the active filter is calculated taking into account the characteristics of nonlinear consumers and network parameters. This approach ensures that the filter parameters are determined, which significantly reduces distortion and improves the quality of electricity.

Result. In the Matlab environment, a graphical user interface (GUI) has been developed using the Matlab Graphical User Interface Development Environment (GUIDE) tool. The program allows for spectral analysis and assessment of harmonic distortion levels, as well as the generation of recommendations for selecting the configuration of the active filter's power section.

Conclusion. The proposed solution can be effectively used by engineering and technical personnel of enterprises to monitor the quality of electricity and reduce the level of harmonic distortion. The use of adaptive window Fourier transform allows the software package to become a universal tool for analysis tasks, and the developed configuration module for calculating the power part of an active filter in the high-voltage network of a mining and processing plant makes it possible to effectively and accurately reduce harmonic distortion.

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