•A 38-bus, 29 machine equivalent dynamic model of the NPCC system
•It was shown to reproduce a multi-machine oscillation that occurred at .75Hz, involving groups of machines in NYC (modeled as Sprainbrook generator) and the northeastern part of New York State, as well as parts of
Canadian power system (modelled
primarily by the Oswego and
Chateaguay units);
•The fault scenario selected for this test was a
five-cycle three-phase short
circuit of the Selkrik/Oswego transmission
line carrying 1083MW. The oscillation grows until the Chateaguay generator loses synchronism, followed
shortly by the Oswego unit.