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Critical Infrastructure Protection by Advanced Modelling, Simulation and Optimizattion for Cascading Failure Mitigation and Resilience

Abstract : Continuously increasing complexity and interconnectedness of modern critical infrastructures, together with increasingly complex risk environments, pose unique challenges for their secure, reliable, and efficient operation. The focus of the present dissertation is on the modelling, simulation and optimization of critical infrastructures (CIs) (e.g., power transmission networks) with respect to their vulnerability and resilience to cascading failures. This study approaches the problem by firstly modelling CIs at a fundamental level, by focusing on network topology and physical flow patterns within the CIs. A hierarchical network modelling technique is introduced for the management of system complexity. Within these modelling frameworks, advanced optimization techniques (e.g., non-dominated sorting binary differential evolution (NSBDE) algorithm) are utilized to maximize both the robustness and resilience (recovery capacity) of CIs against cascading failures. Specifically, the first problem is taken from a holistic system design perspective, i.e. some system properties, such as its topology and link capacities, are redesigned in an optimal way in order to enhance system’s capacity of resisting to systemic failures. Both topological and physical cascading failure models are applied and their corresponding results are compared. With respect to the second problem, a novel framework is proposed for optimally selecting proper recovery actions in order to maximize the capacity of the CI network of recovery from a disruptive event. A heuristic, computationally cheap optimization algorithm is proposed for the solution of the problem, by integrating foundemental concepts from network flows and project scheduling. Examples of analysis are carried out by referring to several realistic CI systems.
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https://hal-supelec.archives-ouvertes.fr/tel-01144504
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Submitted on : Tuesday, April 21, 2015 - 5:28:59 PM
Last modification on : Wednesday, July 15, 2020 - 10:00:02 AM

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  • HAL Id : tel-01144504, version 1

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Yi-Ping Fang. Critical Infrastructure Protection by Advanced Modelling, Simulation and Optimizattion for Cascading Failure Mitigation and Resilience. Electric power. Ecole Centrale Paris, 2015. English. ⟨tel-01144504⟩

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