基于拓扑分析的二次回路仿真算法研究

Study of Secondary Circuit Simulation Algorithm Based on Topology Analysis

提出了一种新型的变电站二次回路仿真分析算法。该算法以二次回路元件模型和拓扑模型为基础,采用广度搜索法和深度搜索法分析二次回路网络拓扑,将复杂二次回路网络分解为单个独立的回路,然后将回路化简为无分支简单电路并计算回路节点电压,再沿着化简路径逆推获得各原始节点电压。该算法不需要求解矩阵方程,仿真实时计算量小,效率高,已经在工程项目得到应用和验证,满足二次回路仿真快速计算分析的需要。

The paper proposes a new algorithm for substation secondary circuit simulation.Based on the component model and topology model,the secondary circuit network is analyzed with depth first search(DFS) and breadth first search(BFS)and decomposed into a group of independent loops.Then these loops are simplified to another kind of loops without branches and the voltage of the nodes is calculated.Moreover,the original node voltage can be calculated with backward method.Because of no matrix equation is required,the new algorithm has lots of advantages,such as the less amount of calculating time and high efficiency.The new algorithm has been applied to many projects,the results show that the algorithm could meet the requirement of secondary circuit simulation rapid analysis.