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Nonlinear Steam Valve Adaptive Controller Design for the Power Systems

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Author(s): Nan Jiang | Xiangyong Chen | Ting Liu | Bin Liu | Yuanwei Jing

Journal: Intelligent Control and Automation
ISSN 2153-0653

Volume: 02;
Issue: 01;
Start page: 31;
Date: 2011;
Original page

Keywords: Power Systems | Steam Valve Control | Large Disturbance Attenuation | Backstepping | Adaptive

ABSTRACT
Considering generator rotor and valve by external disturbances for turbine regulating system, the nonlinear large disturbance attenuation controller and parameter updating law of turbine speed governor system are designed using backstepping method. The controller not only considers transmission line parameter uncer-tainty, and has attenuated the influences of large external disturbances on system output. The nonlinear con-troller does not have the sensitivity to the influences of external disturbances, but also has strong robustness for system parameters variation, which is because of the transmission line uncertainty being considered in internal disturbances. The simulation results show that the control effect of the large disturbance attenuation controller more advantages by comparing with the control performance of conventional nonlinear robust controller.
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