一种少环配电网三相潮流计算新方法

针对少环配电网络的结构特点，提出了一种基于叠加原理求解少环配电网三相潮流的新方法。该方法首先将少环配电网络利用叠加原理分解为两个网络：不合环状结构的纯辐射状网络和不合辐射状结构的纯环状网络。然后对两个网络分别求解三相潮流，并将两个网络的计算结果叠加并迭代求解，最终求出整个网络的三相潮流。文中利用33节点系统进行了验算，并给出了验算结果；同时利用33节点系统、123节点系统和292节点系统进行了性能测试。结果表明，所提出的算法具有良好的收敛特性，能够有效地节约内存，具有很高的效率。

A NEW THREE-PHASE POWER FLOW METHOD FOR WEAKLY MESHED DISTRIBUTION SYSTEMS

According to the structure feature of the weakly meshed distribution network, a new three-phase power flow method based on the superposition principle is proposed in this paper. The weakly meshed network is firstly divided into two networks using the superposition principle: one is the pure radial network and the other is the pure meshed network. Three-phase power flows are solved separately on the two networks. The solutions of two networks are superposed together, and the final power flow solution is obtained by repeating to solve the power flow of the two networks. The presented method is tested by 33 nodes system and the power flow solution is given in this paper. Moreover, the performance test results of 33 nodes system, 123 nodes system and 292 nodes system are offered. The results indicate that the proposed method has good conver-gence performance and save memory and has high efficiency.