Title: Modelling critical infrastructure network interdependencies and failure

Authors: Lin Jiwei; Tai Kang; Robert Tiong Lee Kong; Sim Mong Soon

Addresses: Institute of Catastrophe Risk Management (ICRM), Nanyang Technological University, 50 Nanyang Ave, 639798, Singapore ' School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Ave, 639798, Singapore ' School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Ave, 639798, Singapore ' DSO National Laboratories, 20 Science Park Drive, 118230, Singapore

Abstract: Critical infrastructures are fundamental systems that are interconnected with one another, and their interdependencies need to be modelled in order to analyse any vulnerabilities that exist in these infrastructure networks. In this work, a Leontief input-output model of the critical infrastructure systems and two physical critical infrastructure networks are developed. The input-output model serves to evaluate the interdependencies among the various infrastructure systems, while the physical infrastructure network describes the linkages within a single physical infrastructure system. This study examines the overall impact of any failures in the telecommunication infrastructure or electricity grid within the input-output interdependencies model systematically so as to evaluate the worst case scenarios based on the impact caused by one or more points of failure in the physical infrastructure.

Keywords: critical infrastructures; interdependency modelling; network analysis simulation; cascading failures; impact; worst case scenario.

DOI: 10.1504/IJCIS.2019.096557

International Journal of Critical Infrastructures, 2019 Vol.15 No.1, pp.1 - 23

Available online: 11 Oct 2018 *

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