摘要
基于小世界网络模型,提出了依据输电线路的介数值指标来衡量电网的脆弱性的新方法。介数值是由潮流分析中的线路电抗值决定的,因此在分析中赋给电抗值较小的线路较高的介数值。给出了基于小世界拓扑模型的电网线路介数值指标及脆弱线路辨识的算法,并通过故障仿真验证结果,证实了方法的有效性和实用性。分析了IEEE 118节点系统,证实新的介数指标能辨识系统中的关键线路。
Based on the small-world network model, this paper proposes a new vulnerability analysis method to measure a power network based on the betweenness index of transmission lines. Betweenness index depends on the reactance of lines in the power flow analysis, which gives the smaller reactance a higher betweenness index in the analysis. This paper gives the algorithm of identification of vulnerable lines in power grid based on the small-world topology model and the algorithm ofthe betweermess ofthe lines, the results have been proved by fault simulation, which confirms the efficacy and practice of the method. The analysis has been carried out on the IEEE118 bus system, which shows the new betweenness index can identify the critical lines of the system.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2011年第23期89-92,100,共5页
Power System Protection and Control
关键词
小世界网络
脆弱性
介数值
效能
small-worldnetwork
vulnerability
betweennessindex
efficiency
