一种实用型继电保护用光学电流传感器的设计

The design of a practical optical current transducer for protective relays

论述了光学电流传感器的工作原理并通过实验对其可行性进行了验证 ,证明并指出有源型光学电流传感器以其光路简单、绝缘强度高、线性度好、反应速度快、无磁饱和、体积小、重量轻、实用性强等特点 。

For solving the magnetic saturation problem of traditional current transducers using in protection relay, a new type of current transducer, active optical current transducer, is proposed and its principle is dissertated from theories and validated by experiments.It is proved out from the results of experiments that AOCT may become the important part of new generation current transformers for digitalization protection relay for its simple optical structure, high insulation strength, well linearity, fast response, no magnetic saturation, better practicability, small in volume and light in weight. The project is financed by the fund of across century excellent personnel training program of national education department of China.