Model for Frequency Dynamics in an Islanded Microgrid and Primary Frequency Control Based on Disturbance Compensation

Islanded microgrids have low inertia due to a large penetration of non-inertial inverter based power sources. In such systems, the primary frequency controller (PFC) faces issue higher rate change (RoCoF) and peak deviation in case sudden load or generation loss. The control becomes more challenging as variation different sources is not synchronized. This paper proposes model for dynamics an islanded microgrid comprised both distributed generators (DGs) synchronous (SGs). developed considering asynchronous among SGs. Based on model, novel disturbance compensation-based PFC proposed. controls reference battery energy storage system (BESS) which operated grid-following mode compensates imbalance microgrid. performance proposed verified using Typhoon real-time hardware-in-the-loop simulation.