Jonas Johansson
Universitetslektor
Protection-interdiction-restoration for resilient multi-commodity networks
Författare
Summary, in English
Interdependent critical infrastructure systems represent substantial financial investments and are vital to maintain a fundamental level of social and economic well-being, making them attractive targets for malevolent actors. Many of these infrastructure systems carry multiple products, each with unique needs and importance to different stakeholders. This work extends a tri-level protection-interdiction-restoration model from a single commodity to multiple commodities, solving the model with an integration of Benders’ decomposition and set covering decomposition. We propose a method to limit unmet weighted demand across commodities, considering unique interdependencies between network components and commodity-specific capacity requirements. An optimal solution is found iteratively by alternately fixing protection and interdiction variables. This work is illustrated with a case study of interdependent Swedish power and multi-commodity railway systems. Results demonstrate the convergent behavior of the master and subproblems, the value of network hardening, and the non-uniform network recovery trajectory. For the case study, the railway system was more vulnerable to disruption than the power system, making it a more attractive target for both protection and interdiction. The components that were commonly selected as part of a protection or interdiction plan were generally the ones with the greatest demand for iron ore, a highly critical commodity.
Avdelning/ar
- Avdelningen för Riskhantering och Samhällssäkerhet
- LTH profilområde: Vatten
- LTH profilområde: Energiomställningen
Publiceringsår
2024-02
Språk
Engelska
Publikation/Tidskrift/Serie
Reliability Engineering and System Safety
Volym
242
Dokumenttyp
Artikel i tidskrift
Förlag
Elsevier
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Nyckelord
- Critical infrastructure systems
- Decomposition
- Multi-commodity
- Network protection and interdiction
- Resilience
- Tri-level optimization
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0951-8320