Distribution grid-road network cooperative repair optimization based on post-disaster damaged node aggregation

In order to investigate the synergistic effect of damaged road network maintenance in post-disaster distribution network emergency repair work, based on the previous postdisaster distribution network separate repair model research, considering the post-disaster neighboring damaged nodes aggregated into a super node to simplify the computational complexity, and proposed road network-equivalent post-disaster distribution network synergistic repair model, and analyzed the case of distribution network in a certain province by using the Benders algorithm. The results show that the restoration time of the distribution network is affected by the maintenance time of the damaged road network in the context of extreme disasters, and the restoration time of the distribution network decreases gradually and then tends to be unchanged with the improvement of the maintenance capacity of the road network. For post-disaster emergency repair of distribution networks, considering the maintenance synergy of the road network within a certain threshold will improve the resilience index of the grid. The results of this study can provide a reference for the cooperative optimization of post-disaster emergency repair of distribution network and road network maintenance.