Performance analysis of a novel q-limit guided continuation power flow method

Author

Zhu, Peng ; Taylor, Gareth ; Irving, Malcolm

Author_Institution

Brunel Inst. of Power Syst., Brunel Univ., Uxbridge, UK

Volume

3

Issue

12

fYear

2009

fDate

12/1/2009 12:00:00 AM

Firstpage

1042

Lastpage

1051

Abstract

This study presents a new bifurcation point calculation method that is based on the continuation power flow (CPF) method. The algorithmic continuation steps are guided by the prediction of Q-limit breaking points. A Lagrange polynomial interpolation formula is used in this study in order to find the Q-limit breaking point indices that determine when the reactive power output of a generator has reached its limits. The algorithmic continuation steps will then be guided to the closest Q-limit breaking point, consequently reducing the number of continuation steps and saving computational time. The novel method is compared with alternative conventional and enhanced CPF methods. Studies have been undertaken on IEEE 30, IEEE 118, National Grid (NG) 61 and NG 953 bus systems.

Keywords

interpolation; polynomial approximation; power transmission; IEEE 118 bus system; IEEE 30 bus system; Lagrange polynomial interpolation formula; NG 953 bus system; National Grid 61 bus system; Q-limit breaking points; Q-limit guided continuation power flow method; algorithmic continuation steps; bifurcation point calculation method; enhanced CPF methods;

fLanguage

English

Journal_Title

Generation, Transmission & Distribution, IET

Publisher

iet

ISSN

1751-8687

Type

jour

DOI

10.1049/iet-gtd.2008.0504

Filename

5345666