Dynamic Stability Enhancement in Low-Inertia Power Systems Using Battery Energy Storage

By increasing the number of inverter-based resources, for instance wind turbines (WTs), the overall inertia of the network and the dynamic frequency and voltage stability are decreased. Proper battery energy storage system (BESS) control can improve stability in this case. In this paper, by considering a low-inertia power grid facing loss of generation, the effect of BESS on stability enhancement is evaluated. The study network is a modified Kundur's four-machine system modeled in PowerFactory. The results show that BESS can reduce fluctuations and increase the stability of the system.