Nowadays, FACTS controllers are among the essentials of power systems. In this paper, one of the
FACTS controllers (UPFC) is introduces and studied to improve the transient stability in power
networks. So, the size and angle of the output terminal voltage of the existing generators in the
network are studied in the two cases with and without UPFC. It is observed that to what extent these
mentioned parameters improve in the presence of UPFC. PSAT software was used for simulation and
IEEE 14-bus transmission network was used for study.
کلید واژگان :
UPFC, FACTS controllers, transient stability, power system
