I don't have it anymore but maybe someone out there has access to the GEMI program developed by the Ga. Tech and the Steel Tube Institute and will let you model your situation.
I have a small project that will require installing a 2000KVA, 13800v/ 480-277y transformer on the same bus as another unit the same size. This parallel operation will be controlled by a tie breaker on the LV bus. What is the critical level of impedance difference that will determine which...