Assessment of the impact of resonance regimes in power supply systems on network voltage quality

Abstract

This article investigates the impact of resonance regimes on voltage quality in power supply systems. The study particularly analyzes voltage distortion levels, waveform deformation, and the emergence of high-frequency harmonic components under the presence of nonlinear loads and capacitor devices. Based on oscillograms and spectral analyses, the negative effects of resonance and inter-resonance conditions on voltage purity are demonstrated. Modeling results are expressed through the Total Harmonic Distortion of Voltage (THDU), revealing its variation depending on load parameters and the presence of capacitors. The research substantiates the necessity of carefully selecting capacitors and filtering devices to improve power quality in electrical systems.