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Energies 2015, 8(9), 9211-9265; doi:10.3390/en8099211

A Critical Review of Robustness in Power Grids Using Complex Networks Concepts

1
Department of Signal Processing and Communications, University of Alcalá, Alcalá de Henares,Madrid 28805, Spain
2
OPTIMA Area, TECNALIA, 48160 Derio, Bizkaia, Spain
3
Department of Energy IT, Gachon University, Seongnam 461-701, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Stefan Gößling-Reisemann
Received: 30 May 2015 / Revised: 31 July 2015 / Accepted: 19 August 2015 / Published: 28 August 2015
(This article belongs to the Special Issue Resilience of Energy Systems)
View Full-Text   |   Download PDF [3063 KB, uploaded 28 August 2015]   |  

Abstract

This paper reviews the most relevant works that have investigated robustness in power grids using Complex Networks (CN) concepts. In this broad field there are two different approaches. The first one is based solely on topological concepts, and uses metrics such as mean path length, clustering coefficient, efficiency and betweenness centrality, among many others. The second, hybrid approach consists of introducing (into the CN framework) some concepts from Electrical Engineering (EE) in the effort of enhancing the topological approach, and uses novel, more efficient electrical metrics such as electrical betweenness, net-ability, and others. There is however a controversy about whether these approaches are able to provide insights into all aspects of real power grids. The CN community argues that the topological approach does not aim to focus on the detailed operation, but to discover the unexpected emergence of collective behavior, while part of the EE community asserts that this leads to an excessive simplification. Beyond this open debate it seems to be no predominant structure (scale-free, small-world) in high-voltage transmission power grids, the vast majority of power grids studied so far. Most of them have in common that they are vulnerable to targeted attacks on the most connected nodes and robust to random failure. In this respect there are only a few works that propose strategies to improve robustness such as intentional islanding, restricted link addition, microgrids and Energies 2015, 8 9212 smart grids, for which novel studies suggest that small-world networks seem to be the best topology. View Full-Text
Keywords: robustness; power grid; complex network robustness; power grid; complex network
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Cuadra, L.; Salcedo-Sanz, S.; Del Ser, J.; Jiménez-Fernández, S.; Geem, Z.W. A Critical Review of Robustness in Power Grids Using Complex Networks Concepts. Energies 2015, 8, 9211-9265.

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