母线综合阻抗计算时的网络拓扑分析算法

Algorithm of Network Topology Analysis for Equivalent Impedance Calculation of Buses

考虑到系统内元件运行方式变化的影响,母线综合阻抗计算往往需要对该母线上连接的线路进行轮断。对于辐射线路上的终端母线,必须首先通过拓扑分析确定其对应的系统侧轮断母线。基于系统等值网络参数描述的电气物理路径分析,提出了母线综合阻抗计算时的网络拓扑分析算法。算法结合了物理网络拓扑和几何网络拓扑,通过电气物理路径判断,剔除了无效的几何路径搜索方向,保证搜索方向始终指向系统侧,从而有效避免了辐射分岔支路的深度搜索以及回溯的复杂性。研究和算例证明该算法能准确、快速地判断终端母线并搜索其对应的系统侧轮断母线。

In order to satisfy the dynamic variation of power system configuration, the equivalent impedance calculation of the bus has to consider the outage of one or more branches from the bus to the system. It is essential for the terminal buses to determine the corresponding switching buses near the power system through topology analysis. Based on an analysis of the electro-physical topology paths described by the parameters in the equivalent network, a new algorithm of network topology analysis for equivalent impedance calculation is presented. By combining the physical topology and geometrical topology, the algorithm proposed has excluded the ineffective directions of geometrical path search through the judgment of electro-physical paths, thus ensuring that the search is directed to the power system from beginning to end and the complex back-tracing and depth searching of radial branches avoided. The research and examples show that the algorithm presented is simple and effective in accurately judging the terminal buses and determining their corresponding switching buses.