Using Disturbance Data to Assess Vulnerability of Electric Power Delivery Systems
Publication: Journal of Infrastructure Systems
Volume 12, Issue 4
Abstract
In this paper we discuss how to assess the vulnerability of electric power delivery systems with the help of standard power system performance indices. In two case studies, statistical analyses of disturbance data from Swedish power transmission and distribution are presented and discussed. The following indicators are used in the case studies: unserved energy, power loss, restoration time, and the number of disturbances with power loss. We demonstrate that disturbance size for larger values of indices shows a power-law distribution, i.e., , and that the times of disturbances are distributed as a Poisson process.
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Acknowledgments
Financial support from the Swedish Emergency Management Agency (SEMA), Contract No. 0054/2002, is gratefully acknowledged. The writers would like to thank the following people for their valuable discussions and comments on the manuscript: Torbjörn Thedéen, Lars-Göran Mattsson, Stefan Arnborg, Fredrik Berefelt, Per Näsman, and Henrik Christiansson. Thomas Thor (SvK) and Nils Wikström (Fortum) were very supportive in providing us with essential outage data. Finally, the writers acknowledge the valuable remarks by the reviewers.
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Information & Authors
Information
Published In
Journal of Infrastructure Systems
Volume 12 • Issue 4 • December 2006
Pages: 243 - 251
Copyright
© 2006 ASCE.
History
Received: Feb 6, 2003
Accepted: Oct 12, 2005
Published online: Dec 1, 2006
Published in print: Dec 2006
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