Optimal Configuration of MESS in Distribution Network Fault Recovery by Considering the Impulse of Loop Closing Current

Aiming at the problem that the network configuration generated after distribution network fault does not consider current impulses and out-of-limit during loop closing, this paper utilizes the idea of active participation of distributed power sources in control to suppress loop closing impulse current. To improve the safety and reliability of the distribution network fault recovery process, a strategy of utilizing the flexibility of mobile energy storage system (MESS) to assist in closing loop of the distribution network is proposed. Firstly, the spatiotemporal cost of MESS participation in scheduling is analyzed, as well as the impact of the distance between MESS and the closing point on the impulse current. Then, with the goal of suppressing loop closing impulse current, maximizing load recovery rate, and minimizing MESS scheduling cost, a model of MESS participating in network reconfiguration scheduling is constructed. By determining the node location of MESS and power regulation reference values during the distribution network fault recovery process, the proposed model forms a MESS scheduling and control basic sequence of “reconfiguration scheme generation-energy storage movement-energy storage power regulation-loop closing”. Finally, the IEEE 33-node system is adopted to verify the effectiveness of MESS in suppressing current impulse during the process of loop closing. The results show that the proposed method can enhance the feasibility of network reconfiguration schemes and improve the resilience of distribution network.