含分布式电源的配电网故障重构研究

Research on the Failure Reconstruction of the Distribution Network with Distributed Generators

随着分布式电源(DG)引入配电网,对配电网故障后供电恢复的研究提出了新的挑战。构建了网损最小、电压分布指数和开关操作次数最少的目标函数,提出了一种能使配电网重构和孤岛划分相结合的故障恢复策略。利用深度优先算法对含DG的配电网进行孤岛划分,然后将杂草(IWO)算法和粒子群(PSO)算法相结合,对故障后的配电网进行最优供电路径的寻优,并利用IEEE 33配电系统进行仿真验证。仿真结果表明,提出的算法和恢复策略能够有效解决含DG的配电网故障恢复问题。

Along with the distributed generators （ DG ） introduced into distribution network, a new challenge for researching powered recovery after failure of distribution network is exerted. The target function with minimum network loss, minimum voltage distribution index and minimum number of switching operations is constructed, and the failure recovery strategy combining the reconstruction and islanding of distribution network is proposed; i. e. , the islanding of distribution network with DG is conducted by using depth - first algorithm; then, the invasive weed optimization { I＇WO ） algorithm and the particle swarm optimization （ PSO ） algorithm are combined to accomplish optimization of power supplying path of the distribution network after failure. The simulation verification is conducted by adopting IEEE 33 distribution system ; the results of simulation show that the algorithm and recovery strategy proposed can effectively resolve the recovery of distribution network with DG after failure.