基于sollin算法的含分布式电源的孤岛划分方法

Islanding method based on sollin algorithm for grid with distributed generations

将分布式电源(DG)以馈线方式接入的配电网系统化简成含"T"节点的配电网络,以母线节点和馈线为树干,将负荷按权值由小到大顺序加入生成树中。以孤岛内功率平衡条件为约束,利用图论分析法中sollin算法求解最小树,进而实现孤岛的划分。算例分析结果表明:基于sollin的图论分析方法能对含DG的配电网进行快速划分,且有效提高了DG的利用率。

The distribution network,to which the DGs（Distribution Generations） are connected as feeders,is simplified as the distribution network consisting of ＂T＂ nodes and,with the bus nodes and feeders as the stems,the loads are added into the minimum spanning tree in ascending order according to the weight. With the conditions of power balance in island as the constraints ,the minimum spanning tree is solved by the sollin algorithm in graph theory analysis and the islands are then divided. Case analysis shows that,the distribution network with DGs is quickly divided by the sollin-based graph theory analysis and the utilization of DG is effectively improved.