Harmonic Characterization and Mitigation Strategies for PV-Integrated Distribution Systems: IEEE Std 519-1992 Compliance

The integration of renewable energy sources (RES), particularly photovoltaic (PV) systems, into power distribution networks has introduced challenges related to power quality, including increased harmonic distortion. This paper presents a comprehensive study on the impact of PV generation on harmonics in a distribution system modeled using ETAP, following the IEEE Std 519-1992 guidelines. The study analyzes various PV penetration levels (100%, 50%, and 33%) and evaluates traditional mitigation strategies, such as harmonic filters, alongside an alternative approach based on transformer winding configuration modifications. The results demonstrate that while harmonic filters remain the most effective solution, transformer winding changes can offer partial improvements. The findings contribute to the ongoing efforts to enhance power quality in renewable-integrated distribution systems.