Design of Static Var Compensator for Power Systems Subject to Voltage Fluctuation Satisfying Bounding Conditions

This paper presents the design of a static var compensator for power systems subject to voltage ∞uctuation by using a known framework comprising the principle of matching and the method of inequalities. In the design formulation, all possible voltage ∞uctuations are treated as persistent signals having uniform bounds on magnitude and slope. The principal design objective is to ensure that the rotor angle, the generator terminal voltage and the voltage of the nearby bus always deviate from their nominal values within the allowable ranges for all time in the presence of any possible voltage ∞uctuation. By virtue of the framework, it is clear that once a solution is found, the system is guaranteed to operate satisfactorily in regard to the design objective. The numerical results demonstrate that the framework adopted here is suitable and efiective, thereby giving a realistic formulation of the design problem.