Abstract：In this paper, a radial sub-network of a given distribution network is chosen as a tree, and two types of loops, i.e. 1st loops and 2nd loops, are built according to two kinds of links. Then the loop current and load node voltage equations are set up. Thus the loop currents and load node voltages are explicitly related, and the network loop impedance matrix and node load equivalent impedance matrix are clearly separated. Based on the proposed network equations, direct solution methods and a back/forward sweep method are designed and applied to several IEEE cases. Two techniques are used to deal with the single-phase zero load loops. One is that loads are equivalent as admittances, and the other is that zero-load loop equations are eliminated. As a result, the proposed back/forward sweep can calculate loop currents directly according to the node loads and node voltages, which enhances the efficiency greatly.
初, 壮, 张建强, 蔡国伟. 基于回路电流与负荷节点电压方程的配电网潮流计算[J]. 电工技术学报, 2016, 31(12): 170-176.
Chu Zhuang, Zhang Jianqiang, Cai Guowei. Computing Power Flow of Distribution Networks Based on Loop Currents and Load Node Voltages. Transactions of China Electrotechnical Society, 2016, 31(12): 170-176.
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