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Cyber-Physical Vulnerability Assessment in Smart Grids Based on Multilayer Complex Networks

In the last decade, the main attacks against smart grids have occurred in communication networks (ITs) causing the disconnection of physical equipment from power networks (OTs) and leading to electricity supply interruptions. To deal with the deficiencies presented in past studies, this paper addres...

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Autores principales: Alonso, Monica, Turanzas, Jaime, Amaris, Hortensia, Ledo, Angel T.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8434248/
https://www.ncbi.nlm.nih.gov/pubmed/34502722
http://dx.doi.org/10.3390/s21175826
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author Alonso, Monica
Turanzas, Jaime
Amaris, Hortensia
Ledo, Angel T.
author_facet Alonso, Monica
Turanzas, Jaime
Amaris, Hortensia
Ledo, Angel T.
author_sort Alonso, Monica
collection PubMed
description In the last decade, the main attacks against smart grids have occurred in communication networks (ITs) causing the disconnection of physical equipment from power networks (OTs) and leading to electricity supply interruptions. To deal with the deficiencies presented in past studies, this paper addresses smart grids vulnerability assessment considering the smart grid as a cyber-physical heterogeneous interconnected system. The model of the cyber-physical system is composed of a physical power network model and the information and communication technology network model (ICT) both are interconnected and are interrelated by means of the communication and control equipment installed in the smart grid. This model highlights the hidden interdependencies between power and ICT networks and contains the interaction between both systems. To mimic the real nature of smart grids, the interconnected heterogeneous model is based on multilayer complex network theory and scale-free graph, where there is a one-to-many relationship between cyber and physical assets. Multilayer complex network theory centrality indexes are used to determine the interconnected heterogeneous system set of nodes criticality. The proposed methodology, which includes measurement, communication, and control equipment, has been tested on a standardized power network that is interconnected to the ICT network. Results demonstrate the model’s effectiveness in detecting vulnerabilities in the interdependent cyber-physical system compared to traditional vulnerability assessments applied to power networks (OT).
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spelling pubmed-84342482021-09-12 Cyber-Physical Vulnerability Assessment in Smart Grids Based on Multilayer Complex Networks Alonso, Monica Turanzas, Jaime Amaris, Hortensia Ledo, Angel T. Sensors (Basel) Article In the last decade, the main attacks against smart grids have occurred in communication networks (ITs) causing the disconnection of physical equipment from power networks (OTs) and leading to electricity supply interruptions. To deal with the deficiencies presented in past studies, this paper addresses smart grids vulnerability assessment considering the smart grid as a cyber-physical heterogeneous interconnected system. The model of the cyber-physical system is composed of a physical power network model and the information and communication technology network model (ICT) both are interconnected and are interrelated by means of the communication and control equipment installed in the smart grid. This model highlights the hidden interdependencies between power and ICT networks and contains the interaction between both systems. To mimic the real nature of smart grids, the interconnected heterogeneous model is based on multilayer complex network theory and scale-free graph, where there is a one-to-many relationship between cyber and physical assets. Multilayer complex network theory centrality indexes are used to determine the interconnected heterogeneous system set of nodes criticality. The proposed methodology, which includes measurement, communication, and control equipment, has been tested on a standardized power network that is interconnected to the ICT network. Results demonstrate the model’s effectiveness in detecting vulnerabilities in the interdependent cyber-physical system compared to traditional vulnerability assessments applied to power networks (OT). MDPI 2021-08-30 /pmc/articles/PMC8434248/ /pubmed/34502722 http://dx.doi.org/10.3390/s21175826 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Alonso, Monica
Turanzas, Jaime
Amaris, Hortensia
Ledo, Angel T.
Cyber-Physical Vulnerability Assessment in Smart Grids Based on Multilayer Complex Networks
title Cyber-Physical Vulnerability Assessment in Smart Grids Based on Multilayer Complex Networks
title_full Cyber-Physical Vulnerability Assessment in Smart Grids Based on Multilayer Complex Networks
title_fullStr Cyber-Physical Vulnerability Assessment in Smart Grids Based on Multilayer Complex Networks
title_full_unstemmed Cyber-Physical Vulnerability Assessment in Smart Grids Based on Multilayer Complex Networks
title_short Cyber-Physical Vulnerability Assessment in Smart Grids Based on Multilayer Complex Networks
title_sort cyber-physical vulnerability assessment in smart grids based on multilayer complex networks
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8434248/
https://www.ncbi.nlm.nih.gov/pubmed/34502722
http://dx.doi.org/10.3390/s21175826
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