Impact Assessment of PV Penetration on Unbalanced Distribution network with Dynamic load condition

Intermittent renewable sources such as photovoltaic system (PV) affect the performance of the power grid system causing several problems which includes Voltage violation, unbalances to the system voltage and increase in system losses. Whereas if we place the PVs in right place in the network with optimal capacity, we can keep the voltage profile, voltage unbalance within limits and also reduce the line loss. Here in this paper IEEE-13 bus three phase distribution test feeder system is taken for the study and the three-phase unbalanced power flow analysis is done by Open distribution system simulation software (OpenDSS) software. PV is modelled using Open DSS in which active power P is a function of the Irradiance, temperature (T), and rated power at the maximum power point (MPP). A typical commercial load curve is used in this work to study the impact analysis of PV on unbalanced distribution network. PV with different penetration level is injected to different buses and the system losses, voltage unbalance and voltage profile are being calculated for 24 hours for a dynamic load condition. Finally, the results are being analyzed to study the impact of PVs on this unbalanced distribution network subjected to dynamic load.