Abstract

Fibre optic sensors are gaining high interest in power industry because they offer a substantial cost reduction due to their inherent potential separation. During the past 25 years a lot of effort has been spent to develop current and voltage sensors for high voltage power transmission and distribution [1]. Optical sensors do not only offer potential separation but also the advantage of a compact design and a flexible interface for future relay control. So another benefit of using optical voltage sensors is an homogeneous system design.

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