Distributed resilience improvement strategy of integrated electric-gas energy system considering line-packs

Extreme disasters directly attack the integrated electric-gas system (IEGS), resulting in line breakage and pipe breakage. To reduce huge fault losses, it is necessary to fully schedule the system's recovery capabilities. This paper proposes a distrib uted resilience enhancement strategy for IEGS. Firstly, based on real-time topology changes, network reconstruction and repair crews are dynamically coordinated on the power grid side. On the side of the gas network, the recovery ability of line-packs was calculated, and the bidirectional flow model was set up to build the IEGS resilience enhancement model. After that, alternating direction method of multipliers (ADMM) is used to solve the model, only a small amount of boundary information needs to be exchanged to achieve the centralized goal of optimizing the elasticity of the system, facilitate spreading subsys tem implementation unification and repair of disaster emergency control. Finally, an example shows the effectiveness of the proposed method.