Nonlinear adaptive decentralized stabilizing control of multimachine systems

This paper describes a design approach to nonlinear adaptive control system with unknown parameters and applies it to the excitation control of power systems. The adaptive control strategy is formed by recursive method without involving transformation of linearization. The characteristic of the controller is that it involves a dynamic estimator of parameters. A general expression of nonlinear adaptive decentralized excitation control strategy for multimachine systems is acquired, in which all of the feedback variables are local measurements. Simulation results on a 6-machines, 22-buses system manifests the validity of the nonlinear adaptive controllers