Power electronics in electric utilities: static VAR compensators

Author

Gyugyi, Laszlo

Author_Institution

Westinghouse Res. & Dev. Center, Pittsburgh, PA, USA

Volume

76

Issue

4

fYear

1988

fDate

4/1/1988 12:00:00 AM

Firstpage

483

Lastpage

494

Abstract

The author deals with dynamic VAR compensation of electric power systems, applying power electronics for reactive power generation and control. After an overview of the emergence and status of modern, solid-state VAR compensators in utility and industrial applications, it is shown how dynamic VAR compensation increased transmittable power by providing voltage support, transient stability improvement, and power oscillation damping in electric power transmission systems. Methods of reactive power generation and control using thyristor-controlled reactors, with fixed and thyristor-switched capacitors or modern gate-turn-off (GTO) power converters that can function without AC capacitors or reactors, are described. A summary is included of the control structure and operation to provide the desired characteristics and performance in power systems applications

Keywords

compensation; power systems; reactors (electric); thyristor applications; control structure; dynamic VAR compensation; electric power transmission systems; electric utilities; gate-turn-off; power oscillation damping; reactive power generation; solid-state VAR compensators; static VAR compensators; thyristor-controlled reactors; thyristor-switched capacitors; transient stability; transmittable power; voltage support; Capacitors; Control systems; Inductors; Power electronics; Power generation; Power industry; Power system dynamics; Reactive power; Reactive power control; Static VAr compensators;

fLanguage

English

Journal_Title

Proceedings of the IEEE

Publisher

ieee

ISSN

0018-9219

Type

jour

DOI

10.1109/5.4433

Filename

4433