Analysis on Bus Voltage with Optimal Placement and Size of PV System for Different Solar Radiation and Load Changes

The studies on DG placement and capacity have been broadly reported in last few years. The unbalanced low voltage (LV) distribution network leads to an increase in losses and instability in the system. This paper investigates the voltage distribution profile in the IEEE-37 bus network, for which optimal placement and size of PV installation has been formulated to minimize the installation cost. The analysis performed on voltage magnitude distribution throughout the network, suggests that it remains sensitive to either active or reactive power injection according to the locations and prevailing solar radiation profile.