Energy-based robust nonlinear control of multiple static var compensators in power system

Using the energy-based Hamiltonian function method, this paper investigates the robust nonlinear control of static var compensators (SVCs) in power systems with nonlinear loads. First, the uncertain nonlinear differential algebraic equation model is constructed for the power system. Then, the dissipative Hamiltonian realization of the system is completed by the means of variable transformation and pre-feedback control. Finally, based on the obtained dissipative Hamiltonian realization, a robust nonlinear controller is put forward. The proposed controller can effectively utilizes the internal structure and the energy balance property of the power system. Simulation results verify the effectiveness of the control scheme.