A Resilience Driven Multi-Objective Approach for Optimal Placement of Energy Storage in Islanded Transmission Networks

Battery energy storage systems can provide the needed supply during extreme events and improve system resilience during system outages caused by natural or man-made events. The amount of relief that energy storage can provide during an extreme event depends strongly on its placement and size. This study investigates the optimal sizing and placement of energy storage resources throughout island transmission networks to improve grid resilience. Three aspects of resilience were considered, namely (1) providing back up to critical loads under probable system contingencies, i.e., mitigating critical load drops due to grid outages, (i.e., consequential load drop), (2) mitigating the need to interrupt service to critical loads that can happen as a consequence of thermal and voltage grid violations under probable system contingencies (i.e., non-consequential critical load drops), and (3) enabling orderly breakup into smaller islands and subsequent operation of these system islands while maximizing the number of critical loads being served.