摘要：With more and more distributed generations (DGs) have been integrated intodistribution power system (DPN), the island operation mode of DGs provides a new idea andmethod for the power failure recovery of DPN. In this paper, the problem of island partition isconverted into a tree knapsack problem (TKP) to analyze and solve. Firstly, the originalnetwork are analyzed and tree knapsack model with a single DG is built. And the depth-firstdynamic programming algorithm(DFDPA) is introduced to solve the model and to get all theinitial islands. Then, based on some rules, the initial islands are corrected and some initialislands are combined into one island. Finally, it maybe needs do some modifications whenchecking the node voltage limits and the power flow balance constraints, and then the optimalisland partitions can be obtained. The results from the improved 69-bus test system verified thesuperiority and effectiveness of the proposed method.
关键词：Distribution power network(DPN); Distributed Generation(DG); Island partition; Tree;knapsack problem; Depth-first dynamic programming algorithm(DFDPA)
