Nonlinear decentralized control of large-scale power systems

Yi Guo, David J. Hill, Youyi Wang

Research output: Contribution to journalArticlepeer-review

300 Scopus citations

Abstract

This paper describes an application of nonlinear decentralized robust control to large-scale power systems. Decentralized power controllers are designed explicitly to maintain transient stable closed-loop systems. For the first time, nonlinear bounds of generator interconnections are used which achieves less-conservative control gains. The proposed controllers are robust with regard to uncertain network parameters and attenuate the persistent disturbances in the sense that the L2-gain from the disturbance to the power frequency is reduced to a certain level. Simulations on a two-generator infinite bus power system exhibit enhancement of system transient stability at different conditions of operation points, fault locations and network parameters.

Original languageEnglish
Pages (from-to)1275-1289
Number of pages15
JournalAutomatica
Volume36
Issue number9
DOIs
StatePublished - Sep 2000

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