Photovoltaic Generation Penetration in Radial Distribution System for Improving Voltage Profile and Power Losses

摘要

The objectives of this research are to minimize power losses and improve voltage profile in the radial distribution system by the optimal placement and sizing of Photovoltaic Distributed Generator (PVDG). The multiobjective function based on system performance indices of ILP and ILQ, related to real and reactive power losses and IVD, related to voltage profile improvement are utilized in the present research. The Particle Swarm Optimization (PSO) has been employed to minimize the multiobjective function. Two scenarios have been studded in this research. In the first scenario, the constraint for PVDG unit size has not been considered and problem has been solved for different number of PVDGs (one, two and three). In the second scenario, the constraint for PVDG unit size has been considered and problem has been solved with one PVDG. The studies have been carried out on IEEE 33-bus test system and on a real 33-bus distribution system in Parsabad, Iran. The results show that PVDG penetration has decreased power loss and improved voltage profile. Comparison of the results obtained by the proposed method with those attained in other studies shows the effectiveness of the proposed method.