This example system represents a 9-bus 3-generator test system with a three-phase-to-ground fault at bus 9 and it must be simulated during 20 seconds.
Variables of interest are:
B1.v
B2.v
B3.v
Gen1.gen.delta
Gen2.gen.delta
Gen3.gen.delta
Note that the voltage curves present different acting modes. Also note that disturbances in the AVR reference voltage can be added to each generation unit.