Journal
RELIABILITY ENGINEERING & SYSTEM SAFETY
Volume 95, Issue 4, Pages 379-385Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ress.2009.11.008
Keywords
Critical infrastructures; Vulnerability; Electric power transmission network; Random flow model; Centrality measures
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Commonly used centrality measures identify the most important elements in networks of components, based on the assumption that flow occurs in the network only along the shortest paths. This is not so in real networks, where different operational rules drive the flow. For this reason, a different model of flow in a network is considered here: rather than along shortest paths only, it is assumed that contributions come essentially from all paths between nodes, as simulated by random walks. Centrality measures can then be coherently defined. An example of application to an electrical power transmission system is presented. (C) 2009 Elsevier Ltd. All rights reserved.
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