Decentralized control of nonlinear electric power systems thru excitation and governor systems using local measurements and feedback linearization

Abstract

This paper applies feedback linearization to control a multimachine nonlinear electric power system thru the excitation and governor subsystems. The rotor angles are estimated in real-time from local measurement to achieve decoupling. The nonlinear decentralized controller effectively regulates the terminal voltage and also stabilizes the power system when a fault is applied. Two test systems are used to illustrate the proposed method: one-machine-infinite-bus and nine-bus three-machine power systems.