光纤电流传感器传感头的结构与原理

光纤电流传感器是以法拉第磁光效应为基础、以光纤为介质的新兴电力计量装置,它通
过测量光波在通过磁光材料时其偏振面由于电流产生的磁场的作用而发生旋转的角度来确定被测电流的大小。传感头是光纤电流传感器最为重要和关键的部件。分析了全光纤型和混合型光纤电流传感器传感头的结构和工作原理,对改进光纤电流传感器的设计,提高光纤电流传感器的性能具有重要的指导作用。
关键词:光纤电流传感器;法拉第磁光效应;传感头
　　Abstract :Optical current transducer is a new power measurement equipment ,which is based on Faraday magneto - optic effect and uses optical fiber as medium. It measures the rotation angle of optical wave polarization plane caused by magnetic field produced by current when the optical wave goes through magneto - optic material to calculate the current .
The sensing head is the most critical component . Analyzes roundly the structure and operational principle of all - fiber and mixed optical current transducer. It plays an instructional role in improving the design of optical current transducer and promoting the performance of optical current transducer.
Key Words :Optical Current Transducer ;Faraday Magneto - optic Effect ;Sensing Head