APPLICATIONS OF UPFC FACTS DEVICE FOR IMPROVING POWER SYSTEM STABILITY

This paper presents thethe application of UPFC with two permanent magnet synchronous generator (PMSG) where the UPFC is connected between the line buses in parallel. Thus for the overall requirement of real and reactive power of the system and also make impact on to damped some vibrational oscillations. The application of UPFC for power system stability and also the fault recovery time is observe. Stability is the main important challenge for scientist and power engineers as due to the development of the modern power system which led to an increasing complexity in the study of power system stability.The FACTS devices are mainly considered with the best use of any one technology automation for particular requirement. As the UPFC is also connected to line for fault recovery time which is taken for some time second without UPFC and with UPFC in on and off conditions that shows the better recovery time to system stability. The stator voltages also increases comparatively as there is no FACTS devices and it also increases the oscillations in the system and system stops after some time as there is no stability in the system due to effect of variable loads. When UPFC is used stator voltages decreases comparatively and the system remains oscillation free.