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2010a). Spectral analysis of synchronization in a lossless structure-preserving power network model

By Florian Dörfler and Francesco Bullo

Abstract

Abstract—This paper considers the synchronization and transient stability analysis in a simple model of a structure-preserving power system. We derive sufficient conditions relating synchronization in a power network directly to the underlying network state, parameters, and topology. In particular, we provide a spectral condition based on the algebraic connectivity of the network and a second condition based on the effective resistance among generators. These conditions build upon the authors’ earlier results on synchronization in network-reduced power system models. Central to our analysis is the reduced admittance matrix of the network, which is obtained by a Schur complement of the network’s topological admittance matrix with respect to its bus nodes. This network-reduction process, termed Kron reduction, relates the structure-preserving and the networkreduced power system model. We provide a detailed graphtheoretic, algebraic, and spectral analysis of the Kron reduction process leading directly to the novel synchronization conditions. I

Year: 2013
OAI identifier: oai:CiteSeerX.psu:10.1.1.352.4111
Provided by: CiteSeerX
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