基于优化分区的城市配电网架规划

提出了一种城市配电网优化分区的启发式方法,以街区为最小的负荷块,在选定核心街区的基础上,以各个分区的负荷最均匀为目标,以供电半径的限制为约束条件,通过将若干相邻街区合并和调整实现负荷优化分区。所得各个分区的负荷值相近,有利于减少备用容量。在各分区内采用最小生成树算法生成各自的辐射状配电网架,并采用遗传算法进行分段开关和联络开关规划,得到最终的网架规划结果。实例表明提出的方法是可行的。

Urban distribution network planning based on optimal partitioning

A heuristic method to optimally divide an urban distribution network into several distribution sections is put forward. A street division is considered as the minimum unit. The coal street division is selected. The index of load balance in the distribution sections is used. The limitation of supplying radius is introduced as a constraint. The main procedure of partitioning of distribution network is merging the adjacent street division and making adjustment on the results. The load in each distribution section is guaranteed to be closed. Consequently, the reserve capacity of electrical apparatus can be decreased. A minimum-spanning-tree based approach is adopted in each distribution section to obtain a radial grid. The sectionalizing switches and loop switches are planned by a genetic algorithm. An example is given to show the feasibility of the proposed method.