Voltage control of PCSfor photovoltaic system paper

Large penetration of photovoltaic systems at the distribution network level can be one of the causes of high fluctuating voltage. In this study the authors present a voltage control method based on the modulation of the reactive power production of the power conditioning system (PCS) of the PV. The study evaluate the efficiency of constant voltage control, proportional voltage control and constant power factor control in a test facility with a single PCS and 4 PCS connected in parallel. The test results confirm that the constant and proportional voltage control methods are the most effective solution to control the voltage in the distribution network.