Sensitivity of the loading margin to voltage collapse with respect to arbitrary parameters

Author

Greene, Scott ; Dobson, Ian ; Alvarado, Fernando L.

Author_Institution

Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA

Volume

12

Issue

1

fYear

1997

fDate

2/1/1997 12:00:00 AM

Firstpage

262

Lastpage

272

Abstract

Power system loading margin is a fundamental measure of a system´s proximity to voltage collapse. Linear and quadratic estimates to the variation of the loading margin with respect to any power system parameter or control are derived. Tests with a 118-bus system indicate that the estimates accurately predict the quantitative effect on the loading margin of altering the system loading, reactive power support, wheeling, load model parameters, line susceptance and generator dispatch. The accuracy of the estimates over a useful range and the ease of obtaining the linear estimate suggest that this method will be of practical value in avoiding power system voltage collapse

Keywords

bifurcation; estimation theory; load (electric); power system analysis computing; power system stability; sensitivity analysis; IEEE 118-bus system; computer simulation; estimation accuracy; generator dispatch; line susceptance; linear estimates; load model parameters; loading margin; power system voltage collapse; quadratic estimates; reactive power support; wheeling; Control systems; Load modeling; Power measurement; Power system control; Power system measurements; Power system modeling; Power systems; Reactive power; System testing; Voltage;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.574947

Filename

574947