This paper describes a case study using Power System Stabilizers to en
hance the damping of the WSCC System. The study Is based on a particul
ar model of the system. Local and inter-area modes are first identifie
d for two load flow cases and then stabilization and damping improveme
nt of these modes are obtained, Approaches for further damping improve
ment of a 0.7 Hz Inter-area mode pre recommended,