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 language | English |
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Pages (from-to) | 1275-1289 |
Number of pages | 15 |
Journal | Automatica |
Volume | 36 |
Issue number | 9 |
DOIs | |
State | Published - Sep 2000 |