Frequency Control and small signal stability Improvement with Fuzzy control based Single and two area power systems

Modern Power systems are designed for the fine tuning of frequency and less tolerance for system frequency deviation from nominal value. The Power System is dynamically subjected to the small perturbations of load leading to non-oscillatory Instability due to insufficient damping. The article entente the single area and two area load frequency control and small signal stability analysis. It dispenses the simulation of single area and two area systems with small perturbations of load, with three cases for both kinds of power systems. Case1 without any controller, case2 with PI controller and case3 with Fuzzy Controllers. The simulation is carried out for both single area and two area power systems with all three cases. In the first part of the case study, the simulation results of single area power system for all three cases have been presented. In the second part, the simulation results of two area power system for all three cases have been presented. The simulation results demonstrate the effectiveness of Fuzzy Control perpetuates the frequency with in the endurable range of frequency and subsequently it ensures the small signal stability of both the Power systems against load disturbances.