用于绝缘子串泄漏电流测量的光纤电流传感器  

Optical Fiber Current Sensor for Leakage Current Measurement of Insulator String

作　　者：郑会军[1,2] 帅定新[1] 陈洪[1] 肖大帅[2] 

机构地区：[1]攀枝花学院电气信息工程学院,攀枝花617000 [2]西南交通大学电气工程学院,成都610031

出　　处：《电力系统及其自动化学报》2012年第4期25-29,共5页Proceedings of the CSU-EPSA

基　　金：国家自然科学基金资助项目(61170030)

摘　　要：针对当前绝缘子串泄漏电流测量过程中存在的电磁干扰问题,该文利用光电转换和光信号稳定性,设计并制作了一套基于发光二极管(LED)的光纤电流传感器装置,分析了光纤电流传感器的输出特性。利用标准波对传感器进行了标定,采用逐渐加压法监测绝缘子串的泄漏电流,实验室试验研究表明:该光纤电流传感器可以实现选择性的测量泄漏电流的正半周波或者负半周波,具有抗干扰能力强、线性度高、测量精度高等特点,可以满足对泄漏电流测量的基本要求。For the problem of electromagnetic interference when measuring the leakage current of insulator string, this paper makes use of photoelectric conversion and light signal stability and proposes an optical fiber current sensor to measure leakage current of the insulator string, in which the light emitting diode （LED） is used to detect the current signal and the output performance of the sensor is also analyzed. The experiment re suits show that the optical fiber current sensor can meet the basic requirements of the leakage current measure- ment to achieve selective measurement of leakage current, the positive half cycle or negative half cycle, and has the advantages of strong anti--interference, well linearity and accuracy.

关 键 词：绝缘子串 泄漏电流 光电转换 光纤电流传感器 发光二极管 

分 类 号：TM855[电气工程—高电压与绝缘技术]