Simplified dynamic model of photovoltaic generation system for grid integration studies

This paper presents a simplified mathematical model of photovoltaic generation system which can be used to perform various power system studies. First the relation between solar radiation and PV output is presented. Then the power electronics inverter control employed in PV system is described. Finally the performance of detail model and simplified model of PV system is compared and commented. The model is simplified by considering the technology and controller employed by grid connected PV generation system with a few assumptions on the electrical characteristic of the full model. The performance of simplified model is compared to the full model performances. Simplified model is found giving comparable results. The usage of this simplified model will reduce the complexity in modeling and will reduce substantially power system study time.