Power hardware-in-the-loop simulation of integrated voltage regulation and islanding detection for distributed PV systems on GRU model

Due to its specific advantages on combining software simulations and hardware tests, power hardware-in-the-loop (PHIL) simulation is widely applied in power electronics and power system fields. In this paper, PHIL technology and the Gainesville Regional Utilities (GRU) model are employed to investigate the performance of distributed PV systems with integrated control features. The features including voltage regulation and islanding detection are accomplished by a developed unified controller. One PV inverter hardware prototype is connected to real time digital simulator (RTDS) which runs the GRU model. Under voltage violation and unintentional islanding scenarios, the inverter performance is tested and the interactions among multiple PV systems in the real utility model are explored.