Analysis of GTO-based static VAr compensators

Author

Trainer, D.R. ; Tennakoon, S.B. ; Morrison, R.E.

Author_Institution

GEC Alsthom T&D Power Electron. Syst. Ltd., Stafford, UK

Volume

141

Issue

6

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

293

Lastpage

302

Abstract

The growing availability of high-power gate turn-off thyristors (GTOs) has meant that power electronic convertor circuits can be manufactured with the ability to both absorb and generate reactive power. These circuits constitute the next generation of static VAr compensators (SVCs) which may eventually supersede the conventional thyristor-controlled reactors (TCRs) and thyristor-switched capacitors (TSCs) used in power systems at present. The paper gives an analysis of both 6-pulse and 12-pulse GTO-SVCs based on voltage-source convertor circuits, and equations are derived that describe the performance of each circuit. In addition, the conditions leading to circuit resonances are discussed together with possible methods of avoiding the problems

Keywords

circuit resonance; resonant power convertors; static VAr compensators; thyristor convertors; 12-pulse; 6-pulse; GTO-based static VAr compensators; circuit resonances; high-power gate turn-off thyristors; power electronic convertor circuits; reactive power absorption; reactive power generation; voltage-source convertor circuits;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings -

Publisher

iet

ISSN

1350-2352

Type

jour

DOI

10.1049/ip-epa:19941353

Filename

336348