Solar PV generation system controls for improving voltage in distribution network

This paper presents the maximum installation capacity of solar PV systems by applying active and reactive power controls to increase the penetration in distribution systems. One radial overhead feeder is selected for study. In addition, both distributed and centralized type PV systems are considered in this paper. By considering the loading and the PV active power injection which is predicted according to the daily irradiation variations, the voltage magnitude and voltage variation ratio at each bus are obtained by applying the load flow analysis for determining the maximum PV installation capacity. Furthermore, the proper PV controller is necessary to increase the penetration of PV systems in distribution networks.