Multi layer hybrid modeling framework for the performance assessment of interdependent critical infrastructures
Authored by Cen Nan, Giovanni Sansavini
Date Published: 2015
DOI: 10.1016/j.ijcip.2015.04.003
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AnyLogic
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Abstract
The heterogeneity and tight coupling of modern critical infrastructures
make it challenging to create tractable descriptions of their emergent
behaviors. Classic analytical methods do not provide adequate insights
into system behavior and do not fully capture the complexity of
infrastructure interdependencies. Meanwhile, modeling approaches
developed to represent the diverse physics and operations of critical
infrastructures fail to provide a unifying framework for analyzing
performance. This paper attempts to address these challenges by
proposing a multilayer hybrid modeling framework that supports the
detailed understanding and holistic analysis of critical infrastructure
systems. A critical infrastructure is viewed as a combination of
integrated subsystems structured in interdependent layers: (i) systems
under control; (ii) operational control system; and (iii)
human-organizational social system. The systems under control and
operational control system constitute the technical components of a
critical infrastructure. The humanorganizational social system is the
non-technical component of a critical infrastructure that captures the
human and social factors that influence system performance. The modeling
framework is demonstrated using the Swiss electric power supply system, which comprises three interdependent layers: the power grid, a
supervisory control and data acquisition (SCADA) system and human
operators. The framework can help guide the identification of strategies
for designing, maintaining and enhancing the performance of critical
infrastructures. (C) 2015 Elsevier BM. All rights reserved.
Tags
vulnerability
networks
systems
smart grids