摘 要 配电网络重构问题是一个大规模、混合整形、非线性组合优化问题。配电网络重构的目的是通过改变线路开关的状态来变换网络结构，在实现电力供需平衡的前提下，减少网络的运行损耗，并满足容量和电压等约束。 绝大多数对配电网重构的研究都是以降低线损为目标的，这需要大量的馈线配电变压器负荷数据，而我国配电网的各个供出负荷(即配电变压器)一般都不量测，只有在装设FTU的配电网节点处才能得到电压与流过的功率等数据，所以配电网严重缺乏量测数据，而只需知道FTU的量测数据，就可以进行以负荷均衡化为目标的配电网络重构。本文进行了以负荷均衡化为目标的配电网重构与以降低线损为目标的配电网重构的相关性分析，实验结果表明负荷均衡率和线损率之间有较强的相关性，所以可以用以负荷均衡化为目标的配电网重构近似代替以降低线损为目标的配电网重构，这样在只能量测FTU数据的情况下就可以进行配电网重构。 配电网络重构问题根据优化时间的不同可分为静态重构问题和动态重构问题。在以上相关性分析基础上，本文提出了一种能最大程度地利用现有的静态重构研究成果，解决配电网动态重构问题的方法—时间递推合并法。该方法将某个时区先按一小时为时间间隔进行时段划分，结合每一时段静态重构，进行初步划分，判断开关操作是否满足约束条件，不满足，则以两小时为一时段重新进行时段划分，判断是否满足约束条件，不满足，则再以三小时为一时段进行时段划分，以此类推，直到出现满足开关操作约束条件的划分方式，则可认为此方案为最佳方案。 根据上述方法编制了相应的程序，并在算例上进行了测试和分析，结果验证了提出方法的可行性。

ABSTRACT Distribution network reconfiguration problem is a large,mixed and nonlinear optimization problem.Under load balancing, the aim of the distribution network reconfiguration is to reduce system power loss and to satisfy capacity constraint and voltage constraint, which is realized by changing status of switches. The vast majority of distribution network reconfiguration is to reduce system power loss, which takes a lot of data of distribution transformers.In China,distribution network load(distribution transformers) are not generally measured,the voltage and power can only be got from FTU.So,measurement data of distribution network is seriously lacked.Loading balance can be conducted as the goal for distribution network reconfiguration by FTU.In this paper, distribution network reconfiguration which aims to load balance and distribution network reconfiguration which aims to reduce system power loss are correlatively analysized.The results show that they have strong correlation.So the former can instead of the latter to conduct distribution network reconfiguration. Distribution network reconfiguration can be divided into static and dynamic reconfiguration according to optimization time.On that base of the correlation analysis,a time recursive merging method is proposed.The proposed method can make the most use of the existing research results on static reconfiguration to solve dynamic reconfiguration.In this method,a time zone is divided by one hour and distribution network reconfiguration is conducted in each hour. Whether the switch operation is to meet the constraints can be determined. If not , the time zone is divided by two hours.The switch operation is determined.If the switch operation is not to meet the constraints,the time zone is divided by three hours and so on.Until the switch operation meets the constraints, the best option is got. The program was written out.Examples were given to show the feasibility of the proposed methods．