Multiple Generator with common NGR 1

[Wandere]

I would like to ask if anyone experienced modeling multiple generator with a common neutral grounding resistor on a power system software? Will it be the same modeling each generator individually with the same NGR rating?

I attached here a photo for reference.

Thanks!

 

[dpc]

Not possible to model directly in EasyPower. Also don't think it's possible in SKM PowerTools but I could be wrong on that. I would model one generator as grounded and the others as ungrounded. Or you can split the ground current between the generators that are running by appropriately sizing the grounding resistance.

But what will the model be used for?

If your goal is calculating fault currents, the overall impact is the same either way. But with NGR, the ground fault calculation is somewhat less important, since you basically know the answer already. It will have no impact on three-phase faults.