INFLUENCE OF HIGHER HARMONICS ON POWER QUALITY IN INDUSTRIAL ELECTRICAL NETWORKS

This article examines the influence of higher harmonics on the power quality in industrial electrical networks. It highlights the causes of harmonic distortion, the types of nonlinear loads that generate harmonics, and the wide range of negative effects on energy efficiency, equipment performance, and industrial processes. Key issues such as energy losses, equipment overheating, malfunctioning of protective devices, and inaccuracies in metering systems are analyzed. The study emphasizes the importance of monitoring Total Harmonic Distortion (THD) levels according to international standards like IEEE 519-2014 and IEC 61000-4-7. Effective mitigation strategies, including the use of active and passive harmonic filters, proper network design, and continuous power quality monitoring, are discussed. A systematic and dynamic approach to managing harmonic distortion is identified as essential for maintaining energy efficiency, equipment reliability, and the stability of industrial production.