On the control of time delay power systems

This paper deals with the control of a power system with time delay in the states. The power system is a seventh order synchronous machine infinite bus system. The linearized model of the system belongs to a class of uncertain linear systems with states delays. Two control schemes are proposed for the system. The first controller uses only the instantaneous states for feedback; the second controller combines the effects of the instantaneous as well as the delayed states. Using Lyapunov theory, it is proven that both control schemes guarantee the exponential stabilization of the power system. Detailed simulation results clearly indicate that the proposed control schemes work well.