Optimization of Post-disaster Rolling Emergency Repair Strategy for Distribution Network Considering Transportation Network Delay

To cope with the defect during the enaction of current post-disaster emergency repair strategy for distribution network, namely such problems in the urgent repair as the blocked roads and traffic delay that had not been fully considered, a post-disaster rolling emergency repair strategy for distribution network, in which the traffic network delay was considered, was proposed. Firstly, a post-disaster rolling emergency repair strategy framework, in which the traffic network delay was taken into account, was established, and by use of road delay function and intersection delay function a real-time traffic network delay model was constructed, and by means of Floyd algorithm the shortest transit time matrix among fault points was obtained. Secondly, a two-layer optimization model of post-disaster emergency repair strategy, in which the traffic network delay was considered, was established, in the outer layer the minimum weighted power loss load and the shortest total emergency repair time were taken as the objectives and the emergency repair chain of each emergency repair team was obtained; in the inner layer the maximized recovery of the power loss load was taken as the objective and the emergency recovery plan was obtained. During the emergency repair process the shortest transit time matrix was updated according to the traffic network information, and the follow-up emergency repair strategy was rolled out. Finally, the effectiveness of the post-disaster rolling emergency repair strategy is verified by example simulation.