SIMULATION FOR SMALL DISTURBANCE STABILITY STUDIES USING FREQUENCY DOMAIN SEPARATION TECHNIQUE

ABSTRACT This paper describes an application of 2-dimensional frequency domain separation technique for predicting the small disturbance stability for a hydro power system. The stability results were obtained in terms of the two unknown AVR gain control parameters. The effects of two kinds of hydro speed governor–turbine controls on the system's stability limits have been carried out in detail. The system's stability is found greatly affected by different governor–turbine models.