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Design of fiber optic voltage transformer with double light channels

This paper describes the action of voltage-induced birefringence and natural birefringences, and presents the design of a fiber optic voltage transformer with double light channels. Due to the special double-channel optical and electric signal processing, the influence caused by nature factors such as temperature, pressure etc. is eliminated, and the stability of the instrument is largely improved. The design idea, sensor structure and circuit processing are also introduced in this paper.