配电网故障判断与负荷均衡化

提出一种配电网简化模型 :将馈线开关当做节点 ,将馈线当做弧 ,从负荷的角度描述配电网 ,并采用邻接表的数据结构加以描述。在此基础上发展了配电网故障区域判断方法 ,讨论了以最少的开关操作隔离故障区域的方法。提出一种以联络开关为核心的用于负荷均衡化的配电网络重构方法 ,将每个联络开关对应的两条馈线看做馈线偶 ,分别定义了馈线偶和配电网的负荷均衡率 ,并以此作为网络重构的评价函数 ,配电网络重构过程由若干馈线偶内负荷均衡化过程组成 ,这种方法具有迭代次数少和不需要量测馈线配电变压器参数等优点。文中给出了典型实例

FAULT SECTION IDENTIFICATION AND LOAD BALANCING OF DISTRIBUTION NETWORK

A new model of distribution system is presented, whereby, the feeder switches are regarded as the vertexes of a graph and the feeder lines are regarded as the arcs. A distribution network is described on the basis of load adjacent tables. Based on the proposed model, a novel way to identify fault sections of a distribution network is presented. Algorithm to isolate the fault section with minimum switch operations is discussed. A novel distribution network reconfiguration approach for load balancing is presented, in which tie switches are regarded as critical elements. The two feeder lines connected with one tie switch are regarded as a feeder couple. Load balancing ratios of feeder couples and total distribution network are defined and used as indices of network reconfiguration, respectively. A network reconfiguration procedure is made up of several load balancing processes within each feeder couple. The proposed method shows the advantage of less iteration time and no need of feeder distribution transformer data. Typical examples are also given in the paper.