Multi Machine Stability

This model facilitates understanding the concept multi-machine stability

This is a model of the system in example 16.9 in Power System Analysis book, Stevenson. Three-phase fault is applied at time 20 s and the fault is cleared at 20.3 s. 20 s was chosen to study the fault effect after the system reaches steady state operating conditions. You can zoom in the time interval 20-20.3 in the scope to observe the rotor swinging under fault. The critical clearing time is approximately 0.55 s; it differs from that mentioned in the book since the system in this model employs PSS for each machine, which is more related to real world systems.