AN INVESTIGATION ON USE OF POWER SYSTEM STABILIZER ON TRANSIENT STABILITY OF POWER SYSTEM

摘要

This paper describes the effect of Power System Stabilizers (PSS) on transient stability of power system after occurrence of fault in power system. Studies have been carried out without and with PSS in AVR for a thermal power plant having 8 nos. identical generating units. A dynamic model of the RajWest Lignite Thermal Power Plant situated in the Western Rajasthan is adopted to simulate the effect of PSS for damping of power system oscillations. Simulation studies indicate that AVR having supplementary control signal from PSS, transient stability of power system increase. Power oscillations damp out faster. Frequency of generators reach in steady state condition in lesser time. With PSS, maximum swing in power angle and power swing in transmission lines also reduce.