级联故障
脆弱性(计算)
节点(物理)
脆弱性评估
可靠性(半导体)
拓扑(电路)
可靠性工程
过程(计算)
网络拓扑
计算机科学
理论(学习稳定性)
工程类
分布式计算
结构工程
电力系统
计算机网络
功率(物理)
计算机安全
机器学习
物理
电气工程
心理弹性
操作系统
量子力学
心理学
心理治疗师
作者
Qing Shuang,Mingyuan Zhang,Yunhao Yuan
标识
DOI:10.1016/j.ress.2013.12.002
摘要
Water distribution networks (WDNs) are important in modern lifeline system. Its stability and reliability are critical for guaranteeing high living quality and continuous operation of urban functions. The aim of this paper is to evaluate the nodal vulnerability of WDNs under cascading failures. Vulnerability is defined to analyze the effects of the consequent failures. A cascading failure is a step-by-step process which is quantitatively investigated by numerical simulation with intentional attack. Monitored pressures in different nodes and flows in different pipes have been used to estimate the network topological structure and the consequences of nodal failure. Based on the connectivity loss of topological structure, the nodal vulnerability has been evaluated. A load variation function is established to record the nodal failure reason and describe the relative differences between the load and the capacity. The proposed method is validated by an illustrative example. The results revealed that the network vulnerability should be evaluated with the consideration of hydraulic analysis and network topology. In the case study, 70.59% of the node failures trigger the cascading failures with different failure processes. It is shown that the cascading failures result in severe consequences in WDNs.
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