The principle of effect of the transient gain reduction and its effect on tuning power system stabilizer

The main operation of power system stabilizer (PSS) is to provide optimal damping which is in phase with the rotor oscillation. In this paper the effect of the transient gain reduction (TGR) on the damping performance and the electromechanical torque components in power system with PSS is proved. The tuning of PSS parameters are computed using phase compensation technique (PCT). Several simulations have been done to show the effect of the TGR on the small signal stability under operating at different loading conditions.