Improvement of Photovoltaic Power Plant Energy and Harmonic Attenuation for Grid Enhancement

This article presents a method for power factor correction and power compensation taking into account the injection of distributed generators in the distribution networks. Distribution networks are most often exposed to problems of harmonic disturbance. This work proposes a method that combines active filters and perturb and observe algorithms to reduce the rate of harmonic distortion in a photovoltaic system that is to be fed into power grids. A THD of 2.14% is achieved in compliance with the IEEE 519-2014 standard. Voltage and current profiles have good waveforms. The voltage level is regulated by the PI regulator. The perturb and observe algorithms associated with the filter developed in this work have shown their superiority in terms of voltage stability and power demand management for a grid-connected photovoltaic system.