Effect of fast acting power controller of battery energy storage systems in the under-frequency load shedding scheme

This paper presents the assessment of the effect of fast acting power (FAP) controller in the battery energy storage system (BESS) the under-frequency load shedding (UFLS) scheme. Theoretical and practical discussions about the implementation of inertia frequency control for BESS are presented in this paper. The effect of changes in the gain of the synthetic inertial on the system frequency response is investigated using time domain simulations based on DIgSILENT PowerFactory.