Disturbance Resilience Enhancement of Islanded Hybrid Microgrid Under High Penetration of Renewable Energy Resources by BESS

Maintaining transient stability during grid disturbances in an islanded Hybrid AC/DC Microgrid (HMG) with high penetration of Renewable Energy Sources (RES) exhibiting diverse dynamic characteristics, is a challenging task. This paper investigates an efficient control strategy based on the Battery Energy Storage System (BESS) for the resilience enhancement of the HMG under various operating conditions and grid disturbances. A coordinated control strategy for the wind turbine reactive current requirement has been adopted. In order to evaluate the robustness of the proposed control mechanism, several disruption cases have been considered as small and large signal disturbance case studies. Simulations have been carried out in the MATLAB\Simulink environment. The time-domain simulation results show that the proposed strategy enhances the transient stability of the system during HMG disturbances.