Load Flow Analysis of PV System Integration in Universitas Andalas Distribution System

This article presents the load flow study of Unand feeder with addition of photovoltaic (PV) system. Power flow analysis is needed in the feasibility study of the PV system installation. In this study 300 kW solar power capacity was selected in the simulation of power flow analysis to evaluate the best system states. The results of the study using four cases show that the best voltage profile is obtained in conditions where the PV system is placed on the bus which have lowest voltage and on the load bus which farthest from the source. All load bus voltages have increase above 0.9 p.u in this case and and the lowest voltage within SPLN standard. The lowest level of losses of 55.429 kW is obtained in case three where PV is placed only on buses with the lowest voltage value. Power losses are obtained far below 10% as the losses permitted according to the PLN standard. Therefore, The integration of PV system into an Unand distribution network can improve the voltage profile and reduce total system losses.