A novel nonlinear robust control strategy of hydro turbine governor: Simulation and experiment

In this paper, a new nonlinear robust control strategy for hydro turbine governor is proposed based on differential geometry theory and nonlinear robust control principle. The proposed control strategy improves system robustness to exogenous disturbances on the system in the sense of L-2-gain. Furthermore, a real controller that employs the suggested control strategy has been built up for dynamic experiment. The experiment results on a simple power system show clearly that the suggested control strategy can enhance transient stability of power systems more effectively than traditional PID controllers.