Modeling and Testing of the Utility Interface for Photovoltaic System under Full-scale and Down-scale Inverter System

In this paper, the full-scale and down-scale testing of a 65kW utility-interconnected PV system is presented and compared with the simulation results. In order to understand the testing performance, the IEC 61727-2004 compatible standard CNS 15382:2017 is adopted to evaluate the utility-interconnected PV system. Both the utility compatibility and personnel safety with equipment protection are tested. The testing results with over/under grid voltage, over/under grid frequency and power factor conditioning are offered to verify the utility-interconnected PV system.