Power supply recovery model of active distribution network after disaster based on user outage loss evaluation

When extreme events such as natural disasters occur, the distribution network may be seriously damaged, resulting in blackouts and major economic losses. In order to effectively reduce the economic losses caused by power outages caused by extreme events, a post-disaster power supply recovery model of active distribution network based on user outage loss assessment is proposed in this paper, which uses a variety of distributed generation and energy storage systems to quickly recover important loads and improve the resilience of distribution network. Based on the indirect evaluation method of outage loss of different types of power users, the objective function of minimizing outage loss of users is established, and an improved radial topology constraint is proposed for island fusion to realize online optimization of the number of islands. Combined with various power supply restoration constraints, the multi-time fault restoration problem of distribution network with different types of distributed generation and energy storage systems is modeled and linearized into a mixed integer linear programming model. Finally, an example of an improved IEEE 33-bus distribution system and simulation are given to verify the effectiveness of the proposed model.