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利用空芯电流互感器和电光晶体实现了工频电流的光学传感与测量，对工频电流一电压变换方法和二次电压的光学传感进行了理论与实验研究．结果表明，这种方法具有线性和同相位传感特性，并能够有效地避免铁芯电流互感器存在的波形失真及磁饱和问题．对０～１０ Ａ 工频电流传感实验结果的非线性误差低于 １．３％．
The use of air-core current transformers and electro-optic crystal to achieve the optical frequency current sensing and measurement of the frequency current and voltage conversion method and secondary voltage optical sensing theoretical and experimental study. The results show that this method has the characteristics of linear and in-phase sensing, and can effectively avoid the waveform distortion and magnetic saturation problems existing in the core current transformer. The nonlinear error of 0 ~ 10 A power frequency current sensing experimental results is less than 1.3%.