New Lyapunov function for transient stability analysis and control of power systems with excitation control

In this paper, a direct method of transient stability analysis for power systems with excitation control is presented using Hamiltonian system theory. A modified transient energy function is regarded as Hamiltonian function which is used to formulate a type of standard Hamiltonian equation. A new Lyapunov function is then constructed, and based on it, a novel excitation control strategy is obtained directly from a nonlinear power system. Numerical results demonstrate the effectiveness of the proposed approach. (C) 2001 Elsevier Science B.V. All rights reserved.