A high-accuracy optical current transducer for electric power systems

Author

Ulmer, Edward A., Jr.

Author_Institution

Square D Electromagnetic Ind., Clearwater, FL, USA

Volume

5

Issue

2

fYear

1990

fDate

4/1/1990 12:00:00 AM

Firstpage

892

Lastpage

898

Abstract

An optical current transducer (OCT) employing a new, simple technique to measure electric current has been developed. The technique is based on a fundamental analysis of the Faraday effect. The disturbing effects of temperature on the glass sensing element can be overcome. By aligning the transmission axis of the polarizer at specific angles, it is shown that the OCT´s output is independent of temperature. High-accuracy measurements are thereby possible over a wide range of temperatures. Two practical OCT designs for extra-high-voltage power systems are compared

Keywords

Faraday effect; electric current measurement; fibre optic sensors; magneto-optical devices; power system measurement; transducers; EHV; Faraday effect; designs; electric current measurement; extra-high-voltage; glass sensing element; optical current transducer; polarizer; power system measurement; transmission axis; Current measurement; Electric variables measurement; Faraday effect; Glass; Optical polarization; Optical sensors; Temperature distribution; Temperature measurement; Temperature sensors; Transducers;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.53099

Filename

53099