The effect of different couplings on mitigating failure cascades in interdependent networks

Golshan Golnari, Zhi-Li Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

Many real-world (cyber-)physical infrastructure systems are multi-layered, consisting of multiple inter-dependent networks/layers. Due to this interdependency, the failure cascade can be catastrophic in a inter-dependent, multi-layered system, and even lead to the break-down of the entire system. The 2003 blackout of the Italian power grid is reportedly the result of a cascading failure due to the inter-dependency of the power grid and the communication network that it relies on. In this paper, we propose a theoretical framework for studying cascading failures in an inter-dependent, multi-layer system, where we consider the effects of cascading failures both within and across different layers. The goal of the study is to investigate how different couplings (i.e., inter-dependencies) between network elements across layers affect the cascading failure dynamics. Through experiments using the proposed framework, we show that under the one-to-one coupling, how nodes from two inter-dependent networks are coupled together play a crucial role in the final size of the resulting failure cascades: coupling corresponding nodes from two networks with equal importance (i.e., 'highto-high' coupling) result in smaller failure cascades than other forms of inter-dependence coupling such as 'random' or 'lowto-high' coupling. Our results shed lights on potential strategies for mitigating cascading failures in inter-dependent networks.

Original languageEnglish (US)
Title of host publication2015 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages677-682
Number of pages6
ISBN (Electronic)9781467371315
DOIs
StatePublished - Aug 4 2015
EventIEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2015 - Hong Kong, Hong Kong
Duration: Apr 26 2015May 1 2015

Publication series

NameProceedings - IEEE INFOCOM
Volume2015-August
ISSN (Print)0743-166X

Other

OtherIEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2015
Country/TerritoryHong Kong
CityHong Kong
Period4/26/155/1/15

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