Utilization of PV solar farm for Grid Voltage regulation during night; analysis & control

To fulfill increasing green energy demand; installation of Photovoltaic solar farms are rapidly growing in various manners. PV solar farms feed active power during day time and become inactive in the night time. The increasing penetration level of Distributed Generations causes a rise in voltage at Point of Common Coupling (PCC) due to reverse power flow. To regulate voltage at PCC; utilities need to install voltage regulating devices like FACTs. The Voltage Source Converter is the heart of PV farm; including FACTs devices which is capable for reactive power compensation when there is no generation of PV farm. In this paper the utilization of PV solar farm for Grid voltage regulation at night time is proposed. An analysis and control in MATLAB/Simulink based environment is presented for different power flow conditions.