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An Approach for Modelling Interdependent Infrastructures in the Context of Vulnerability Analysis

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Author

Summary, in English

Technical infrastructures of the society are becoming more and more interconnected and interdependent, i.e. the function of an infrastructure influences the function of other infrastructures. Disturbances in one infrastructure therefore often traverse to other dependent infrastructures and possibly even back to the infrastructure where the failure originated. It is becoming increasingly important to take these interdependencies into account when assessing the vulnerability of technical infrastructures. In the present paper, an approach for modelling interdependent technical infrastructures is proposed. The modelling approach considers structural properties, as employed in graph theory, as well as functional properties to increase its fidelity and usefulness. By modelling a fictional electrified railway network that consists of five systems and interdependencies between the systems, it is shown how the model can be employed in a vulnerability analysis. The model aims to capture both functional and geographic interdependencies. It is concluded that the proposed modelling approach is promising and suitable in the context of vulnerability analyses of interdependent systems.

Publishing year

2010

Language

English

Pages

1335-1344

Publication/Series

Reliability Engineering & System Safety

Volume

95

Issue

12

Document type

Journal article

Publisher

Elsevier

Topic

  • Building Technologies
  • Other Electrical Engineering, Electronic Engineering, Information Engineering
  • Social Sciences Interdisciplinary
  • Other Civil Engineering

Keywords

  • Interdependencies
  • Critical infrastructures
  • Vulnerability analysis
  • Modelling
  • Networks

Status

Published

Project

  • FRIVA

Research group

  • LUCRAM (Lund University Center for Risk Analysis and Management

ISBN/ISSN/Other

  • ISSN: 0951-8320