基于比较测量法的光学电流互感器

Optical Current Transformer Based on Comparative Measurement

提出采用永久磁体作为参考源应用于光学电流互感器中 ,对随环境因素改变的材料Verdet常数及线性双折射进行实时补偿的比较测量法 运用矩阵光学理论对该方法进行了理论分析 ,并进行了相关实验 ,实验结果证明了该方法的可行性 设计的传感单元采用了点式传感头 ,具有结构简单的特点 。

Comparative measurement using permanent magnet as reference source applied in Optical Current Transformer is proposed.The influence of material′s Verdet constant and linear birefringence caused by varying environmental factors can be compensated. The method is analyzed by the theory of matrix optics, and related experiment results have proven its feasibility. The point type sensing head is adopted in designed sensing element. So the OCT is simple in structure and is suitable for applying in the high voltage environment.