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Resilience of Interdependent Communication and Power Distribution Networks against Cascading Failures

Chai, WK; Kyritsis, V; Katsaros, KV; Pavlou, G; (2016) Resilience of Interdependent Communication and Power Distribution Networks against Cascading Failures. In: 2016 IFIP Networking Conference (IFIP Networking) and Workshops [Proceedings]. (pp. pp. 37-45). IEEE: Vienna, Austria. Green open access

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Abstract

The operations of many modern cyber-physical systems, such as smart grids, are based on increasingly interdependent networks. The impact of cascading failures on such networks has recently received significant attention due to the corresponding effect of these failures on the society. In this paper, we conduct an empirical study on the robustness of interdependent systems formed by the coupling of power grids and communication networks by putting real distribution power grids to the test. We focus on the assessment of the robustness of a large set of medium-voltage (MV) distribution grids, currently operating live in the Netherlands, against cascading failures initiated by different types of faults / attacks. We consider both unintentional random failures and malicious targeted attacks which gradually degrade the capability of the entire system and we evaluate their respective consequences. Our study shows that current MV grids are highly vulnerable to such cascades of failures. Furthermore, we discover that a small-world communication network structure lends itself to the robustness of the interdependent system. Also interestingly enough, we discover that the formation of hub hierarchies, which is known to enhance independent network robustness, actually has detrimental effects against cascading failures. Based on real MV grid topologies, our study yields realistic insights which can be employed as a set of practical guidelines for distribution system operators (DSOs) to design effective grid protection schemes.

Type: Proceedings paper
Title: Resilience of Interdependent Communication and Power Distribution Networks against Cascading Failures
Event: 2016 IFIP Networking Conference (IFIP Networking) and Workshops, 17-19 May 2016, Vienna, Austria
Location: Vienna, AUSTRIA
Dates: 17 May 2016 - 19 May 2016
ISBN-13: 9783901882845
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/IFIPNetworking.2016.7497224
Publisher version: https://doi.org/10.1109/IFIPNetworking.2016.749722...
Language: English
Additional information: Copyright © 2016 IFIP This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Power system faults, Power system protection, Communication networks, Robustness, Smart grids, Network topology
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1522742
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