Full-Control Initialization of Photovoltaic Park Models for Electromagnetic Transient Simulations

Accurate initialization of large-scale power systems involving inverter-based resources can significantly reduce the computation time needed for reaching steady-state conditions in electromagnetic transient simulations. This paper presents a novel method for initializing detailed Photovoltaic Park models for electromagnetic transient simulations. The proposed approach uses the load-flow simulation results of the system to initialize electrical components and control variables of the PV park. The validity of the proposed initialization is demonstrated through the EMT simulations of aggregated and detailed representations of the PV park and its integration into a large-scale power system via three case studies. The results indicate that the existing initialization method significantly reduces the computational time required to reach steady-state, compared to the existing technique.