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Modeling of Interconnected Critical Infrastructure Systems Using Complex Network Theory

Published on Sep 1, 2018in IEEE Transactions on Smart Grid10.486
· DOI :10.1109/TSG.2017.2665646
Jovica V. Milanovic37
Estimated H-index: 37
(University of Manchester),
Wentao Zhu3
Estimated H-index: 3
(University of Manchester)
Abstract
This paper reviews several complex network theory-based methodologies to model and analyze interconnected networks. To address the deficiencies reported in past studies, an advanced model of coupled electric power system (EPS) and information and communication technology (ICT) is developed. The new model is designed as a 3-D graph with edges and nodes, and it highlights the interaction and interdependency of both EPS and ICT. The criticality of each component within the interconnected system is investigated by analyzing the efficiency-weighted node degree of each node symbolizing the components. The model has been tested on an ICT supported 14-bus distribution network under three different loading conditions. Results show that the coupled infrastructure complies with the typical characteristics of scale-free network. It is also shown the ICT system, although smaller in scale, contains more critical hubs than the power distribution network. The results of the proposed approach can be used as a reference to analyze the criticality in other coupled infrastructure by incorporating the internal characteristics of coupled systems.
  • References (32)
  • Citations (7)
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References32
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Increasing evidence shows that real-world systems interact with one another via dependency connectivities. Failing connectivities are the mechanism behind the breakdown of interacting complex systems, e.g., blackouts caused by the interdependence of power grids and communication networks. Previous research analyzing the robustness of interdependent networks has been limited to undirected networks. However, most real-world networks are directed, their in-degrees and out-degrees may be correlated,...
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This paper presents a summary of the key results obtained within the “SINARI” project; a French collaborative research project which focuses on developing methods for assessing the dependability and cyber security of the coupled infrastructure made up by the electrical distribution network and its supporting information system and telecommunication infrastructures. This paper will present an overview of the project as a whole and will summarize the work already completed along within highlightin...
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In view of the increasing use of Information and Communication Technol-ogies in power systems, it is essential to study the interdependencies between these coupled heterogeneous systems. This thesis focuses on the modeling of multi- infrastructure systems. This includes interdependencies and the three major failures families: common mode, escalat-ing and cascading. It is indeed necessary to identify the weaknesses that can trigger one or multiple failure(s) and cascade through these interdepende...
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Deployment of Information and Communication Technologies (ICT) on Power Systems added a new complexity to Power Systems. New vulnerabilities evolved from this highly interconnected System-of-Systems due to the interdependencies among and within their components. We develop an Eigen-spectral analysis using complex-valued graphs and Hermitian Adjacency Matrices to model these interdependencies and to identify the most critical components, taking into account the information flow direction in each ...
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