Critical node analysis (CNA) in power grids under enhanced restoration options

Venkat Venkateswaran; Alex Aved; David Ferris; Philip Morrone

doi:10.1117/12.2586171

12 April 2021 Critical node analysis (CNA) in power grids under enhanced restoration options

Venkat Venkateswaran, Alex Aved, David Ferris, Philip Morrone

Author Affiliations +

Proceedings Volume 11733, Geospatial Informatics XI; 117330J (2021) https://doi.org/10.1117/12.2586171
Event: SPIE Defense + Commercial Sensing, 2021, Online Only

Abstract

In recovering from cyber attacks on power grids, restoration steps have also included disconnecting parts of the network to prevent failures from propagating. Inspired by these reports we investigate how this may be performed optimally. We show how throughput can indeed be increased by selectively disconnecting links when the network is currently stressed and unable to meet all of the demands. We also consider the impact of this option on critical node analysis. For defensive as well as offensive scenario planning it is important to be able to identify the critical nodes in a given network. We show how ignoring this option of disconnecting links can lead to misidentifying critical nodes, overstating the impact of these nodes. We outline an iterative procedure to address this problem and correctly identify critical nodes when link disconnection is included in the recovery scheme.

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Citation Download Citation

Venkat Venkateswaran, Alex Aved, David Ferris, and Philip Morrone "Critical node analysis (CNA) in power grids under enhanced restoration options", Proc. SPIE 11733, Geospatial Informatics XI, 117330J (12 April 2021); https://doi.org/10.1117/12.2586171

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