序优化理论在配电网重构中的应用

Application of ordinal optimization in distribution network reconstruction

配电网重构是非线性组合优化问题,针对大规模配电网解空间过于庞大的特点,提出基于序优化理论的配电网重构算法。该算法从配电网运行和开关调整方式入手,借助开关支路交换法简化网络结构,得到解环生成原始可行解空间的方法。运用序优化理论制定一种按照评估值优先准则,进行解集的选择和排序,改进的粗糙函数不仅能够进行序曲线的确定,而且能去除大量的无效解,提高重构速度。通过实际24节点的算例测试,验证了方法的有效性。

Distribution network reconfiguration was a nonlinear combined optimization problem, according to the characteristics of the large-scale distribution network solution space was too big, the paper put forward the distribution network reconfiguration algorithm based on the theory of the ordinal optimization. The algorithm started from the distribution network operation and switch control mode, with the help of switch branch exchange method to simplify the network structure and obtained the method of original feasible solution space. Using ordinal optimization theory to establish a kind of priority rules according to the evaluation values, performed the choice of solution set and sorted, improved rough function could not only for the determination of curve and could remove a lot of invalid solution, improved the reconstruction speed. The effectiveness of the method was verified by the actual 24 node test case.