适合负荷变化的配电网络重构

考虑到负荷变化的情况,提出一种配电网静态重构算法,并以此为基础设计出了能够适应负荷变化的动态重构算法。其中静态重构算法以支路交换法为基础,利用降损估算公式分析负荷变化对网络结构的影响,并通过支路流过的负荷值与最佳转移负荷的距离确定应打开的分段开关,算法无需进行潮流计算;动态重构算法则是根据开关操作最大降损量客观指导时段划分,并通过建立评价函数分析各时段在整个时区的降损效果,以进一步优化结果。算例结果表明提出的静态重构和动态重构算法是可行和有效的。

Distribution Network Reconfiguration Suitable for Load Changes

In considering the situation of time varying load, this paper suggests a kind of power distribution static reconfiguration algorithms,on this basis of which,the dynamic reconfiguration algorithms being able to adapt to load changes is designed.Of which the static reconfiguration based on the branch-exchange algorithms can use the energy loss reduction formula to analyze the effect of loading change upon the network structure.Also,the loading value flowing via the branch pathway and the optimal transferring loading distance are used to determin the due turn-on sectional switches so that there is no use to carry out the current calculation;and the dynamic reconfiguration algorithm is based on the maximum energy loss reduction of switch operation to guide the time sectional divisions objectively.The energy loss reduction effects of each time section in the whole time zone are analyzed via the establishment of evaluation functions so as to further optimize the results.The results from the calculated examples indicate that the static reconfiguration and the dynamic reconfiguration algorithms are feasible and effective.