Title :
Voltage dependent reactive power limits for voltage stability studies
Author :
Lof, P.-A. ; Andersson, G. ; Hill, D.J.
Author_Institution :
Dept. of Electr. Power Eng., R. Inst. of Technol., Stockholm, Sweden
fDate :
2/1/1995 12:00:00 AM
Abstract :
This paper presents and studies a static model for synchronous generators with voltage dependent reactive power limits due to maximum stator current, maximum and minimum rotor (field) current as well as maximum rotor angle (underexcitation) limiters. The proposed generator model for static voltage stability studies can be included in an ordinary power flow program, and results from studies on a test system with twenty generators are presented. The influence of voltage dependent reactive power limits is compared with fixed (conventional) limits, by use of the minimum singular value of the power flow Jacobian matrix and related submatrices as indicators of the static voltage stability limit
Keywords :
Jacobian matrices; load flow; machine theory; power system stability; reactive power; rotors; stators; synchronous generators; transient analysis; maximum rotor angle limiters; maximum rotor current; maximum stator current; minimum rotor current; minimum singular value; ordinary power flow program; power flow Jacobian matrix; static voltage stability limit; synchronous generators; underexcitation limiters; voltage dependent reactive power limits; voltage stability; Load flow; Power generation; Power system modeling; Reactive power; Rotors; Stability; Stators; Synchronous generators; System testing; Voltage;
Journal_Title :
Power Systems, IEEE Transactions on
