What is the difference between a swing generator and a swing bus?

[fgf]

In terms of what the “Swing” means in the electrical system
(Yes! I know one is a bus one is a generator)
for those of you that use Power simulation software

ETAP can set multiple Swing Generators
PSSE can only set 1 Swing Bus

Is this a Translation thing?!

[surgeArrester]

if you set a generator as swing it will act similar as a swing bus* but etap will provide info about the generator capacity in comparison with the calculated power flows. if this is a swing bus* you get nothing about its capacity.


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[BabyBear]

In terms of what the “Swing” means in the electrical system
(Yes! I know one is a bus one is a generator)
for those of you that use Power simulation software

ETAP can set multiple Swing Generators
PSSE can only set 1 Swing Bus

Is this a Translation thing?!

Swing Generator - A generator connected to a swing bus
Swing/Slack Bus - A designated bus in the power system that makes adjustments on real and reactive power needs and changes in the system through injection of real and reactive power from the connected generator. It takes care also of the losses in the power system. Usually* swing/slack buses are identified with generators having high rated capacity and Pmax.

I don't use etap for interconnected power system analysis but I believe it should allow multiple swing buses in order to designate one bus for one area. PSS/E allows multiple swing buses. This is evident if you have multiple areas within a very large power system.