An Islanding Integration Strategy During the Reconfiguration of Distribution Systems Based on Multi-sources

摘要

When an outage occurs on a distribution system due to extreme events, distributed generators (DG) can be used to restore the blackout system. Based on multi-source, the distribution system is divided into multiple islands to restore local loads. This paper proposes a new strategy for multisource islanding integration during the reconfiguration of distribution systems. Firstly, the constraints on the integration of islands are studied for determining the number of islands. With the load shedding, the number of islands can be expanded. Secondly, the tie lines satisfying the constraints between islands are connected to realize the islanding integration. Then, constructing mix-integer second-order cone programming (MISOCP) is used to solve the problem of integration. Finally, case studies on the IEEE 33-bus distribution system indicate that the proposed islanding integration strategy is feasible and beneficial to the restoration process.