In this paper we analyze the dynamic performance of a power system with gen
erators operating under rotor current limitation considering various models
of takeover and summed-type overexcitation limiters (OELs). It is shown th
at in certain cases the field current limitation introduces slow generator
dynamics that interact with long-term dynamic devices, such as LTCs, wherea
s in other cases the generator dynamics remain fast even after the limitati
on of rotor current. Equations suitable for a quasi steady state (qss) simu
lation corresponding to several OEL dynamic models are derived and the resu
lts are compared to those obtained by a full simulation.