Particle swarm optimization tuned unified power flow controller for power oscillation reduction

One of the best flexible AC transmission system (FACTS) is unified power flow controller (UPFC). As it gets more benefit from both real and reactive transfer, used in for controlling transmitted power. The UPFC controls on side system. When as well set tries to follow command by using proportional integral (PI) controller. But some systems PI controllers cannot produce proper due oscillations. These oscillations are created properties. In this paper replaced with particle swarm optimization tuned (PSO-PI). It minimizes objective function. MATLAB 2017b demonstrate transfer curves voltages. IEEE 9 bus being a reference