SOME ASPECTS OF THE ELECTRICAL POWER QUALITY

The paper presents basic definitions, terms and indicators of the quality of electricity. Higher harmonics and their consequences are presented. Degradation of basic voltage parameters (effective value, frequency, phase shift, symmetry, etc.) as well as waveform distortion, ie short-term or long-term deviations from the sinusoidal shape (higher harmonics, short-term interruptions, voltage failures, impulse overvoltages and others) represents a low-frequency part of the conduction disturbances that most affect the voltage quality as part of the electromagnetic compatibility problem. Basic standards and recommendations for controlling higher harmonics in electrical networks are given.