벌크형 광 CT 센서 및 신호처리부 성능 개선 방안 연구

A Study on Performance Improvement of Optical Current Transformer and Signal Processor

In this paper, some parameters are studied for the performance improvement of a bulk optical current sensor. The performance of optical current sensor is influenced by current measuring range, Verdet constant change due to temperature change, temperature variation of wave plate, signal to noise ratio of optical transmitter/receiver, optical bias mismatch. Two types of optical current sensors are implemented and tested in the current range from 10 ampere to 200 ampere.