Impact of high penetration of Photovoltaic Generation on voltage fluctuation of transmission and distribution systems

Voltage and power flow changes caused by Photovoltaic Generation (PV) source will emerge a new challenge towards a conventional distribution system. This study aims to measure the effect of PV source presence on voltage fluctuation disturbance occurred in an electrical power transmission network. In this paper, 70 kV-voltage transmission systems were decreased to 10 kV-distribution feeders and modelled in OpenDSS and MATLAB to investigate the impact of PV generation. A comparison between distribution system without and with PV source was shown. The voltage magnitude of each bus of the distribution systems and transmission systems was analysed. This study then showed that power change from PV source per hour could affect voltage magnitude in distribution and transmission system.