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Energies 2016, 9(2), 93; doi:10.3390/en9020093

Quantitative Model and Metrics of Electrical Grids’ Resilience Evaluated at a Power Distribution Level

Department of Electrical and Computer Engineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
Academic Editor: Enrico Sciubba
Received: 28 May 2015 / Revised: 30 October 2015 / Accepted: 24 December 2015 / Published: 3 February 2016
(This article belongs to the Special Issue Resilience of Energy Systems)
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Abstract

This paper presents a framework to systematically measure and assess power grids’ resilience with a focus on performance as perceived by customers at the power distribution level. The proposed framework considers an analogous measure of availability as a basic metric for resilience and defines other key resilience-related concepts and metrics, such as resistance and brittleness. This framework also provides a measurement for the degree of functional dependency of loads on power grids and demonstrates how the concepts of resilience and dependency are inherently related. It also discusses the implications of considering human-centered processes as fundamental constituting components of infrastructure systems. Thanks to its quantitative nature, the proposed resilience framework enables the creation of tools to evaluate power grids’ performance as a lifeline and to assess the effects of plans for optimal electrical power infrastructure deployment and operation. The discussion is supported by practical examples and empirical records from field damage assessments conducted after recent notable natural disasters. View Full-Text
Keywords: brittleness; dependence; fragility; power distribution; power grids; resilience; resistance brittleness; dependence; fragility; power distribution; power grids; resilience; resistance
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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

Kwasinski, A. Quantitative Model and Metrics of Electrical Grids’ Resilience Evaluated at a Power Distribution Level. Energies 2016, 9, 93.

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