Network Allocation and Optimal Sizing of BESS for Resilience Enhancement on Power Distribution Systems Against Volcanic Eruption

High-impact and low-probability (HILP) events, such as natural hazards, have made power distribution systems (PDSs) more vulnerable. The ability of the PDSs to efficiently withstand HILP events while enabling a quick recovery and restoration to the normal state is interpreted as resilience. This paper proposes a novel methodology for planning and operating battery energy storage systems (BESS) to enhance resilience of PDSs following a volcanic eruption with a focus on reducing the energy not supplied (ENS) during PDS recovery. The proposed methodology includes the Monte-Carlo simulation method (MCS) and a stochastic optimization model. The effectiveness of the proposed methodology framework is implemented and validated on the IEEE 37-node test feeder. The results show that for the system under study, the ENS in the expected scenario and the worst-case scenario was reduced by 24.63 % and 30 % respectively when BESS units are installed, demonstrating substantial resilience enhancement against volcanic eruption.