Zusammenfassung
An optical current transducer (OCT) with a bulk
type Faraday sensor demonstrated 0.3 % class accuracy for
metering. The Faraday sensor had Bi12Si020 (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.
Nutzer