一种新型的光学组合互感器

A Novel Optical Combined Transformer

基于电光晶体的Ｐｏｃｋｅｌｓ效应和磁光玻璃的Ｆａｒａｄａｙ效应，研制出一种新型的可同时测量高压输电线电流及电压的组合互感器。这种互感器绝缘结构简单，电压测量与电流测量是无相互干扰。实验表明，此互感器的非线性误差小于０．３％，电压传感器的转换比在２４℃～３３℃温度范围２４小时的波动在±０．３％以内。

Based on Pockels effect in electro-optic crystal and Faraday effect in magneto-optic glass, a newcombined transformer that can simultaneously measure high voltage and large current has been developedand tested. The insulation structure of this transformer is simple, and there is no interference between themeasurement of current and the measurement of voltage. Testing results showed that the non linearity errorof this transformer is less than 0.3%, and the stability of the opticaI voltage sensor is within ±0.3% in 24hours between 24℃ -33 ℃.