Title :
Effect of overexcitation limiters on power system long-term modeling
Author :
Vournas, C.D. ; Manos, G.A. ; Sauer, P.W. ; Pai, M.A.
Author_Institution :
Lab. of Electr. Energy Syst., Nat. Tech. Univ. of Athens, Greece
fDate :
12/1/1999 12:00:00 AM
Abstract :
In this paper we analyze the dynamic performance of a power system with generators operating under rotor current limitation considering various models of takeover and summed-type overexcitation limiters (OELs). It is shown that in certain cases the field current limitation introduces slow generator dynamics that interact with long-term dynamic devices, such as LTCs, whereas in other cases the generator dynamics remain fast even after the limitation of rotor current. Equations suitable for a quasi steady state (qss) simulation corresponding to several OEL dynamic models are derived and the results are compared to those obtained by a full simulation
Keywords :
power system stability; rotors; synchronous generators; dynamic performance; field current limitation; generator dynamics; long-term dynamic devices; overexcitation limiters; power system long-term modeling; quasi steady state simulation; rotor current limitation; slow generator dynamics; summed-type overexcitation limiters; synchronous generators; Power generation; Power system analysis computing; Power system dynamics; Power system modeling; Power system protection; Power system stability; Regulators; Rotors; Steady-state; Voltage;
Journal_Title :
Energy Conversion, IEEE Transactions on
