Measure for Electrical Networks"
Paul Hines and Seth Blumsack
We derive a measure of “electrical centrality” for AC power
networks, which describes the structure of the network as a function of
its electrical topology rather than its physical topology. We compare our
centrality measure to conventional measures of network structure using the
IEEE 300-bus network. We find that when measured electrically, power
networks appear to have a scale-free network structure. Thus, unlike
previous studies of the structure of power grids, we find that power
networks have a number of highly-connected “hub” buses. This result, and
the structure of power networks in general, is likely to have important
implications for the reliability and security of power networks.
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