Resiliency Improvement of Electric Shipboard Power System

Resiliency of an all-electric ship that is commissioned for military use is of utmost importance. In this paper, it is evaluated on the basis of total load served following an attack that causes maximum disruption in a network. The worst- case attack is identified using a bi-level and a mixed integer linear programming (MILP) framework. A nominal SPS topology based on Breaker-and-a-half (BAAH) configuration is used in the analysis. The base case BAAH topology is evaluated to survive only up to 3 simultaneous worst case attacks. This paper demonstrates that its resiliency can be increased to survive up to 8 worst case attacks. The improvement is achieved by specific topology modifications such as strategic generator placement, selected bus hardening, increased load in-feeds and bus tie- breakers.