Comparison of Multi-Machine Transient Stability Limit Using UPFC

The stability of an interconnected power system is compare to normal or stable operation after having been subjected to some form of disturbance. With interconnected systems continually growing in size and extending over vast geographical regions, it is becoming increasingly more difficult to maintain synchronism between various parts of the power system. This paper investigates the comparison of transient stability limit of a multi-machine power system with the help of a UPFC operated in perpendicular voltage control mode and their it’s comparison.