Line-Current Compensated Single Toroidal-Core Current Transformer for Three-Phase Current Measurement

Author

Korasli, Celal

Author_Institution

Dept. of Electr. & Electron. Eng., Bahrain Univ., Isa Town

Volume

22

Issue

1

fYear

2007

Firstpage

500

Lastpage

506

Abstract

A novel design of 100 : 1 single toroidal-core current transformer (CT) is described to measure line currents of a three-phase system. The toroidal core has three compensation windings associated with line conductors and a secondary winding. The current through a line conductor is measured, except the compensation winding of the sound phase, when the compensation windings of the other line conductors are active. The calibration and performance of the transformer are discussed for burdens 0.1 and 1 Omega over the current range 0-50 A. Test results indicate that maximum errors of measurements are comparable to the commercial CTs

Keywords

conductors (electric); current transformers; transformer cores; transformer windings; 0 to 50 A; line conductors; line current single toroidal core current transformer; three compensation windings; three-phase current measurement; Calibration; Conductors; Current measurement; Current transformers; Equivalent circuits; Magnetic flux; Phase measurement; Toroidal magnetic fields; Transformer cores; Wounds; Compensation winding; current transformer (CT); toroidal core;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2006.883009

Filename

4039443