Multi-index Nonlinear Controller Design for Hydro Turbine Speed Governor
Kong Fannie1, Li Xiaocong2, Wu Jiekang3, Li Gang2
1.Guangxi University for Nationalities, Nanning 530006 China; 2.Guangxi University, Nanning 530004 China; 3.Guangdong University of Technology, Guangzhou 510080 China
Abstract：According to different structures of hydraulic systems combined with hydroturbine for hydropower plant, the 5 order nonlinear control model of hydro turbine speed governor system for hydraulic system composed of reservoir-tunnel-surge-penstock-generator units is established for first time. The hydro turbine speed governor system controller is designed by use of multi-index nonlinear control design method. The system zero and pole are configured by regulating the output function matrix. The simulation results demonstrate that the multi-index nonlinear control(MINC) design method has more excellent system performance than that of exact feedback linear(EFL) method, which can ensure the system stabilization and swiftly regulate the turbine speed error to zero, moreover, which possesses nicer rejection load disturbance performance. The hydro turbine speed governor system performance are enhanced by harmonizing the system dynamic and steady state performance using the method of regulating the output function matrix.
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2014, Vol. 29 
