基于复杂网络理论的电力网络关键线路识别

摘要

从复杂网络理论角度出发,提出了一种基于网络凝聚度的电力网络关键线路评价方法.方法着重关注电力网络的全局状态,综合考虑电力网络中各节点之间的连通能力,以及网络中节点的数目,通过观察输电线路断开前后电力网络凝聚度的变化量,来衡量电力网络中各输电线路的重要程度.通过将研究的计算结果与文献中已有的基于网络效率的关键线路评价方案的结果进行对比,以及在拓扑结构和动力学角度上进行仿真验证,均说明了提出的关键线路衡量方法是合理且有效的.%Based on the complex network theory,this paper proposes a critical lines evaluation method for power network according to the cohesion degree of network.This method focuses on the overall state of the power network,the connectivity between nodes in the power network and the numbers of nodes in the network.It can measure the importance of each transmission line in power network by observing the change of cohesion degree of power network before and after transmission line breaking.Because of the comparison between the calculation results of this paper and the results of the existing critical lines evaluation schemes based on the network performance in the literature,the simulation on the topological structure and dynamics,the reasonable and effective of the method is proved.