Two-Stage Power Restoration in Interconnected and Islanded Distribution Networks
With the increasing penetration of renewable distributed generation in distribution networks,how to fully utilize the joint restoration of non-faulted blackout areas by DG and the main network has attracted much attention.This paper focuses on the coordination between islanded microgrids and the main network for joint power restoration,as well as the fluctuation issues of wind and solar loads.Firstly,a dynamic islanding partitioning strategy combining breadth-first search and depth-first search is proposed,considering the fluctuation issues of wind and solar loads.Secondly,in order to realize the optimality of the joint restoration of power supply between the island and the main network,a two-stage programming model with coordination is established.The first stage aims at maximizing the important load of the main network through reconstruction,and the second stage aims at maximizing the important load of the main network and the DG island.Due to the certain correlation between the two objectives,the overall optimization of the joint restoration of power supply can be realized.Finally,the feasibility and effectiveness of the proposed method are verified using an improved IEEE 33-node example.
distribution networkdistributed generationisland partitionpower restorationtwo-stage programming model
NETL
NSTL
万方数据
维普
