Decentralized stabilization of nonlinear electric power systems using local measurements and feedback linearization

Abstract

This paper presents a methodology for decentralized stabilization of a multimachine nonlinear electric power system through the excitation systems. To handle the nonlinearities, feedback linearization techniques are used. To achieve decoupling of subsystem models, the interface variables are estimated from available local measurements. Robust control design techniques are then applied to account for measurement noise. A nine-bus, three-machine, power system is used to illustrate the proposed method.