PSS performance as affected by its output limiter

The effects of control limits of power system stabilizers (PSS) have been studied using the Transient Stability Simulation Package (TSSP) and a real-time simulator. Extensive simulations were carried out for three different power systems with PSSs using either electrical power or speed deviation as input signal. Results from batch and real-time simulations are in agreement with each other for the cases studied. It has been concluded that higher PSS output limit settings can achieve added damping and enhance transient stability. They yield excellent PSS performance during major system disturbances.