A Resilience Enhancement Strategy for Electric-Hydrogen Coupled System Considering Unmanned Aerial Vehicle De-Icing Under Extreme Ice Storm

Extreme ice storms cause severe icing faults on power lines and energy supply shortages, which can seriously threaten the safe operation of distribution systems. To enhance system resilience, a comprehensive resilience enhancement strategy for electric–hydrogen coupled distribution systems considering unmanned aerial vehicle (UAV) de-icing and hydrogen energy storage systems (HESS) is proposed in this paper. First, a line icing thickness model under extreme ice storms is established considering UAV de-icing effects to derive the corresponding fault rate. Second, resilience evaluation indicators are developed to quantify the disaster resistance and recovery capabilities of the electric–hydrogen coupled distribution system. Finally, a multi-dimensional disaster mitigation optimization model is formulated to strengthen the defense capability and resilience of the electric–hydrogen coupled system. Simulations are conducted on an improved IEEE 33-bus distribution system integrating UAVs and hydrogen energy storage systems, verifying that the proposed strategy significantly enhances restoration capability under extreme icing disasters while reducing economic costs.