Author(s): A. Karimi, K. Schoder, A. Feliachi

Reference: Power System Conference and Exposition, New York City, Oct.10-13, 2004

Abstract: This paper proposes a backstepping technique for designing excitation controller to enhance the transient stability of multi-machine power systems under different contingencies, while maintaining terminal voltage at prefault nominal value by adding automatic voltage regulator to controller. The Observation Decoupled State Space (ODSS) is used to obtain the states locally. Two cases are considered, a single machine infinite bus and multi-machine power system. The nonlinear controller achieves good performance in damping rotor angle oscillation and stabilizing terminal voltages.

Keywords:nonlinear excitation control, backstepping, power system, observation decoupled state space