Semi-Newton load flow algorithms in transient security simulations

Author

Jovanovic, S.

Author_Institution

Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK

Volume

15

Issue

2

fYear

2000

fDate

5/1/2000 12:00:00 AM

Firstpage

694

Lastpage

699

Abstract

This paper describes the results of an investigation concerning the idea of modify/relaxing the Newton-type transient load flow algorithms, implemented to achieve computationally more efficient load flow solutions in the transient security studies. Relaxing the coupling between MW and MVAr transient flows, and also the coupling between V and θ in the Jacobian matrix, including the complete decoupling, is studied. The algorithms were tested on the IEEE 18- and 68-node systems, showing improvements in computation speed and convergence and memory characteristics

Keywords

Jacobian matrices; load flow; power system security; power system simulation; power system transients; IEEE 18-node system; IEEE 68-node system; Jacobian matrix; P/Q coupling; complete decoupling; computation speed improvement; convergence improvement; memory characteristics improvement; semi-Newton load flow algorithms; transient load flow algorithms; transient security; transient security simulations; Computational modeling; Equations; Jacobian matrices; Load flow; Newton method; Power system modeling; Power system security; Power system transients; Stability analysis; Transient analysis;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.867161

Filename

867161