Electrical centrality measures for electric power grid vulnerability analysis

Centrality measures are used in network science to rank the relative importance of nodes and edges of a graph. Here we define new measures of centrality for power grid structure that are based on its functionality. We show that the relative importance analysis based on centrality in graph theory can...

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Bibliographic Details
Published in49th IEEE Conference on Decision and Control (CDC) pp. 5792 - 5797
Main Authors Zhifang Wang, Scaglione, A, Thomas, R J
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2010
Subjects
Admittance
Correlation
Laplace equations
Network topology
Power grids
Power measurement
Topology
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Summary:Centrality measures are used in network science to rank the relative importance of nodes and edges of a graph. Here we define new measures of centrality for power grid structure that are based on its functionality. We show that the relative importance analysis based on centrality in graph theory can be generalized to power grid network with its electrical parameters taken into account. In the paper we experiment with the proposed electrical centrality measures on the NYISO-2935 system and the IEEE 300-bus system. We analyze the centrality distribution in order to identify important nodes or branches in the system which are of essential importance in terms of system vulnerability. We also present and discuss a number of interesting discoveries regarding the importance rank of power grid nodes and branches.
ISBN:142447745X
9781424477456
ISSN:0191-2216
DOI:10.1109/CDC.2010.5717964