Two-stage Control Strategy for Structure Optimization of Faulted Distribution System with Distributed Generation.

In this article, a structure optimization strategy is designed for the faulted distribution system with distributed generation. The strategy is composed of two stages: the island partition and the remaining network reconfiguration. In the first stage, single-source electrical betweenness is proposed, and a partition model is built on the basis of variable network structure characteristics and flexible load features. Then binary decision method has been introduced to transform the original partition problem into a “satisfiability problem,” which can be solved in two steps, and the initial partition results are obtained using the implicit enumeration method, followed by static survivability check, interruptible load modification, and reactive compensation calculation. In this manner, the final scheme for the island partition is obtained. After that, based on the ant colony algorithm, the remaining network is reconstructed in the second stage. The effectiveness of the proposed strategy is verified by case studies in two test systems. [ABSTRACT FROM AUTHOR]