Nonlinear decentralized robust governor control for hydroturbo-generator sets of multi-machine system

A new approach to nonlinear decentralized robust governor control of hydroturbine generator sets in a power system is discussed in this paper. Non-elastic water hammer sind disturbances are considered in the model. Based on differential geometry theory and nonlinear robust control principle, as well as dynamic feedback method, the nonlinear decentralized robust control law for hydroturbine governors has been presented. It is beneficial to implement the proposed controller that the variables appearing in the expression of the proposed control law are all local measurements and independent to network parameters. Moreover, the digital simulation results have manifested the effectiveness of the proposed control strategy.