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

Volume

10

Issue

1

fYear

1995

fDate

2/1/1995 12:00:00 AM

Firstpage

220

Lastpage

228

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;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.373945

Filename

373945