Harmonic Spectrum Analysis at Interconnection Points between Electrical Power Networks and Photovoltaic Systems via Numerical Simulation

Abstract

The growing use of photovoltaic systems (PVs) as renewable energy sources has driven their interconnection with conventional electrical grids. However, this integration can lead to power quality issues, including harmonic distortion. Understanding the harmonic spectrum at interconnection pointsis vital to ensure network reliability. This study investigated four photovoltaic generation sites, each withdistinct characteristics. The analysis revealed more pronounced harmonic distortions where the capacityof PVs was significant compared to the load. The predominant harmonic frequencies indicated possiblesources of distortion. Understanding this spectrum is crucial to prevent transformer damage and maintain electrical system stability. This study contributes to a holistic approach that considers photovoltaicgeneration and interconnection elements.