一种基于广度优先搜索配电网潮流计算的改进编号方法

为简化大规模配电网络编号步骤和提高潮流计算速度,在广度优先搜索编号的基础上，提出了改进的节点编号方法。此方法对于新增分支并不需要考虑同级网络的分支数，只需在父节点的基础上直接添加编号，应用配电网络的代数方程计算出配电网络各台区节点电压值和功率分布。经VBA预处理和Matlab编程对5级中压开式配电网络进行潮流计算测试，整个配电网潮流计算结果在满足配电网潮流计算精度要求的前提下，相比改进前广度优先搜索编号方案计算速度快，验证了该编号方案的有效性和实用性。

Improved Numbering Method Based on Breadth-First Search

In order to simplify numbering procedures and improve calculation speed on large-scale distribution network flow, an improved node numbering method is proposed based on breadth first search. With the proposed method, when adding new branch, numbers are added directly in parent node without need to consider branches of the same level network. Distribution network algebraic equations is used to calculate node voltage and power. VBA preprocessing and MATLAB simulation is performed on a 5-level open distribution network. The power flow results show the validity and practicability of proposed method. The calculation speed is faster than traditional method and satisfy the same accuracy requirement in distribution networks calculation.