Energy-based Decentralized Excitation Control of Nonlinear Differential Algebraic Power Systems

Using the Hamiltonian function method, we investigate the excitation control of power systems presented by nonlinear differential algebraic equations. First, a novel Hamiltonian realization structure for nonlinear differential algebraic systems is applied to the power system. Then we propose a decentralized nonlinear excitation control scheme and analyze the stability of the closed loop system. This strategy takes advantage of the intrinsic properties including especially the internal power balance of the differential algebraic power system model. Simulation illustrates the effectiveness of the control strategy.