Design, construction, and test of a passive optical prototype high voltage instrument transformer

Abstract

This paper describes an optical voltage transformer (OVT) for a 132-130 kV system based on the Pockels effect in a Bi/sub 4/Ge/sub 3/O/sub 12/ crystal. Different from the majority of OVTs reported, this construction does not use any capacitive voltage division. To accomplish this, it was necessary to redesign the optical modulator. A prototype of the OVT has been constructed and tested. >