Investigation of post-fault voltage recovery performance with battery-based energy storage system in a microgrid

Robust and resilient delivery are two principal features of future smart grids and energy storage can play a significant role in meeting these challenges. With increased renewable penetration, energy storage can improve the operating capabilities of hybrid microgrids. However, capability of storage system to support voltage and frequency in microgrids largely depends on its proper placement and size. In this paper, battery-based energy storage system (BESS) has been placed in a renewable integrated microgrid depending on the voltage sensitivity factors of the network buses. Then, impact of such a placement on post-fault voltage recovery in a 43 bus industrial microgrid has been investigated. Results show that distributed placement of BESS across highly sensitive buses results in grid compatible and faster voltage recovery in comparison to centralised placement.