基于二级多重分裂迭代法的配电网并行潮流计算方法

Two-stage Multi-splitting Iterative Method for Parallel Power Flow Solution of Distribution Systems

根据图论理论及电网络拓扑分析中的树生成方法,并结合配电网少环这一特征,以树为基本单元将含有环网的配电网分解成一组相互独立的子系统,每个子系统又分解为树和补树。在此基础上,利用二级多重分裂迭代法对分解的子系统进行分解和协调计算,从而导出一种新颖的配电网并行潮流计算方法。以IEEE 33节点系统和一个实际的中等规模配电系统为例,利用计算机网络对所提出的算法进行并行装配和测试,验证这一全新算法的有效性。

In this paper, the distribution system with loops is decomposed into a set of independent sub - systems based on tree, according to the graph theory and topological solution method. Furthermore each sub - system is divided into a tree and a correspondent cotree, and each tree is a radial network. Then, two- stage multi - splitting iterative method is used for the decomposition and coordination calculation of different sub - systems. This leads a new parallel and distributed algorithm for load flow calcu- lation of distribution systems. For the purpose of test, the parallel implementation for the proposed algorithm has been done by use of a computer network. The experimental results on IEEE 33 bus system and a practical distribution system have shown that, the proposed algorithm is of good convergence and efficient for parallel and distributed load flow solution of distribution systems.