Electrooptic methods for measurement of small DC currents at high voltage level

Ole Tønnesen, Neville Beatty, Asbjørn Ottar Skilbreid

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    Two electrooptic methods for measurement of DC currents at high voltage levels, extending from the nanoampere range and up to the milliampere range have been developed. By switching the polarity of a measured DC voltage across a Pockels cell, DC currents can be measured and transmitted along an optical fiber to an electrooptic converter. Using an electronic circuit, the measured signal can be converted into a modulated-frequency form for transmission along an optical fiber. These systems are described, measurement results are presented and improvements to be made in the future are outlined. The measurement methods can be used for both development and supervision of electrical insulating systems
    Original languageEnglish
    JournalIEEE Transactions on Power Delivery
    Issue number3
    Pages (from-to)1568-1572
    Publication statusPublished - 1989

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    Copyright: 1989 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE


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