Title :
Development of an optical current transducer with a bulk type Faraday sensor for metering
Author :
Katsukawa, H. ; Ishikawa, H. ; Okajima, H. ; Cease, T.W.
Author_Institution :
NGK Insulators Ltd., Nagoya, Japan
fDate :
4/1/1996 12:00:00 AM
Abstract :
An optical current transducer (OCT) with a bulk type Faraday sensor demonstrated 0.3% class accuracy for metering at a TVA substation. The Faraday sensor had Bi12SiO20 (BSO) single crystals with right and left optical rotatory power to cancel out temperature dependency. A prototype 161 kV OCT installed in a TVA substation verified 0.3% class performance. The OCT had the Faraday sensor, a gapped magnetic iron core, a 1.6 m optical insulator, and an optical interface
Keywords :
Faraday effect; bismuth compounds; electric current measurement; magnetic cores; magneto-optical sensors; optical rotation; power system measurement; silicon compounds; transducers; 1.6 m; 161 kV; Bi12SiO20 single crystals; TVA substation; Verdet´s constant; bulk type Faraday sensor; gapped magnetic iron core; left optical rotatory power; metering; optical current transducer; optical insulator; optical interface; right optical rotatory power; Bismuth; Crystals; Iron; Magnetic sensors; Optical sensors; Prototypes; Substations; Temperature dependence; Temperature sensors; Transducers;
Journal_Title :
Power Delivery, IEEE Transactions on
