光学组合互感器的研究

Research on 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间无相互干扰。实验表明，此互感器的非线性误差小于03%，在24～33℃温度范围电压传感器24h内的波动在±03%以内。文中结合实验分析了温度对电压传感器的影响。

Based on the Pockels effect in electro-optic c rystal and the Faraday effect in magneto-optic glass,a new combined transformer that can simultaneously measure high voltage and heavy current has been develope d and tested.The insulation structure of this transforner is simple,and there is no interference between the measurement of current and the measurement of volta ge.Testing results showed that the non linearity error of this transformer is le ss than 0.3%，and the stability of the optical voltage sensor is within ±0.3% in 24 hours between 24～33℃.The effect of temperature on the optical voltage sensor is analyzed.