Voltage stability indices for stressed power systems

Author

Löf, P-A ; Andersson, G. ; Hill, D.J.

Author_Institution

Dept. of Electr. Power Syst., R. Inst. of Technol., Stockholm, Sweden

Volume

8

Issue

1

fYear

1993

fDate

2/1/1993 12:00:00 AM

Firstpage

326

Lastpage

335

Abstract

The use of static voltage stability indices based on a singular value decomposition of the power flow Jacobian matrix and matrices derived from the Jacobian matrix is discussed. It is shown that such indices, together with the singular vectors, contain substantial and important information about the proximity to voltage instability and also about critical buses and disturbances from a voltage instability point of view. This is done by a theoretical analysis of the linear power flow equations and an analysis from model power systems as well as realistic power systems (1033 nodes). It is argued that indices based on these matrices are useful for the system analyst in planning and operations planning

Keywords

load flow; matrix algebra; power system stability; critical buses; linear power flow equations; power flow Jacobian matrix; singular value decomposition; static voltage stability indices; stressed power systems; Jacobian matrices; Load flow; Matrix decomposition; Power system analysis computing; Power system modeling; Power system planning; Power system stability; Singular value decomposition; Vectors; Voltage;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.221224

Filename

221224