基于网络拓扑着色的虚拟电路阻抗辨识方法  

Virtual Circuit Impedance Identification Algorithm Based on Network Topology Coloring

作　　者：武森[1] 林叶锦[1] 黄朝明[1] 

机构地区：[1]大连海事大学轮机工程学院DCS虚拟实验中心,辽宁大连116026

出　　处：《实验室研究与探索》2016年第11期94-98,共5页Research and Exploration In Laboratory

摘　　要：在虚拟电路故障诊断训练系统中,为了实现电路拓扑中任意节点间阻抗准确、快速、动态和实时辨识,提出一种基于网络拓扑着色的虚拟电路阻抗辨识算法。首先基于网络拓扑着色原理,进行虚拟电路拓扑深度优先搜索、同属性节点着色,简化待辨识电路。其次,提取简化电路的节点和支路信息,建立节点-支路关联矩阵和支路阻抗矩阵,通过剪枝变换Tc、串支变换Ts、并支变换Tp和桥支Y-△变换Tb对节点-支路关联矩阵A和支路阻抗矩阵Z进行循环降维处理,并由支路阻抗矩阵的变换结果获得待辨识电路阻抗。最后,对一个虚拟电路网络进行任意节点之间阻抗的辨识,辨识结果与实际计算结果完全一致。基于网络拓扑着色的虚拟电路阻抗辨识算法可实现任意节点间阻抗的有效辨识。In the virtual circuit fault diagnosis and training system,a new method based on network topology coloring is presented to realize the accurate,fast,dynamic and real-time identification of the impedance of any node in the circuit topology. Firstly,depth-first algorithm is used to search network and color the nodes with the same property based on network topology coloring principle. Secondly,the node and the branch information of the simplified circuit are extracted,and the node-branch correlation matrix and the branch impedance matrix are established,the dimensions of the node-branch correlation matrix and branch impedance matrix are reduced to obtain the impedance of the circuit by cut-transform Tc/ series-transform Ts/ parallel-transform Tpand bridge star-delta transform Tb. Finally,the identification of the impedance of a virtual circuit network is carried out. The results are in agreement with the theoretical results.Effective identification of the impedance between any two nodes can be realized by the virtual circuit impedance identification algorithm based on the network topology coloring.

关 键 词：虚拟电路 网络拓扑着色 阻抗辨识 循环降维处理 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]