期刊
IEEE TRANSACTIONS ON SMART GRID
卷 7, 期 4, 页码 1997-2006出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TSG.2016.2539823
关键词
Interdependent systems; critical infrastructures; cascading failures; Markov chain; power-law distribution
资金
- Defense Threat Reduction Agency [HDTRA1-13-1-0020]
- Division Of Computer and Network Systems
- Direct For Computer & Info Scie & Enginr [1541117] Funding Source: National Science Foundation
Many critical infrastructures are interdependent networks in which the behavior of one network impacts those of the others. Despite the fact that interdependencies are essential for the operation of critical infrastructures, such interdependencies can negatively affect the reliability and fuel the cascade of failures within and across the networks. In this paper, a novel interdependent Markov-chain framework is proposed that enables capturing interdependencies between two critical infrastructures with the ultimate goal of predicting their resilience to cascading failures and characterizing the effects of interdependencies on system reliability. The framework is sufficiently general to model cascading failures in any interdependent networks; however, this paper focuses on the electric-cyber infrastructure as an example. Using this framework it is shown that interdependencies among reliable systems, i.e., systems with exponentially distributed failure sizes, can make the individually reliable systems behave unreliably as a whole with power-law failure-size distributions.
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