This paper deals with a new method of quenching transients of load frequency of a single area power system. The load frequency power system dynamics are represented by selecting deviation in frequency and its derivatives as variables. The validity of this model was compared in terms of its uncontrolled response obtained in the earlier work [1]. This new model representation is used for further studies in this paper. For a practical single area power system the behavior of uncontrolled system with range of values of regulation constant (R) and load disturbance (?PD) are obtained. The responses of controlled system with different switching times (tc) for range of values of the control parameter (?PC), R and ?PD are obtained using fuzzy control methods. The total time of state transfer from zero (before disturbance) to the final steady state i.e. zero after the disturbance are evaluated. The studies reveal that the static errors are increasing if the demand is more for an uncontrolled system and for higher values of regulation constant. It is also observed that when fuzzy control is applied at a predetermined time, the time of state transfer is more with increase of regulation constant. The time of state transfer in general is increasing with increase of load change. While fuzzy control is applied the frequency transients are quenched and the final state is reached at much faster rates without any oscillations.