Colvara, L. D.2022-04-292022-04-291993-01-01Joint International Power Conference "Athens Power Tech": Planning, Operation and Control in Today''s Electric Power Systems, APT 1993 - Proceedings, v. 1, p. 455-459.http://hdl.handle.net/11449/231433This paper proposes the consideration of the system nonlinearities in an approach to the Power System Stabilizer problem. An order reduction is proposed and a Lyapunov Function is derived for the reduced system. Conditions for stability are obtained from the Lyapunov Function . Also, direct stability analysis is allowed for the power system with supplementary stabilization.455-459engLyapunov approachNonlinear modelPower systemPower system stabilizerTuningTrabalho apresentado em evento10.1109/APT.1993.6869182-s2.0-85066487795