基于加速老化试验的磁光玻璃型光学电流传感器的寿命评估  

Life assessment based on accelerated aging test for magneto-optic glass-type OCS

作　　者：肖智宏[1,2] 于文斌[1] 张国庆[1] 郭志忠[1] 申岩[1] 张祥龙[2] 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江哈尔滨150001 [2]国网北京经济技术研究院,北京102209

出　　处：《电力自动化设备》2014年第12期139-144,共6页Electric Power Automation Equipment

基　　金：黑龙江省自然科学基金资助项目(E201237);中央高校基本科研业务费专项基金资助项目(HIT.NSRIF.2013018);国家电网公司科技项目(52440013004L)~~

摘　　要：光学电流传感器(OCS)的使用寿命无法从现场运行数据中获得,因此提出了基于加速老化试验的磁光玻璃型OCS寿命评估方法。对基于Faraday磁光效应原理的OCS的失效机理和失效模式进行了分析,提出了将插入损耗变化量作为其失效判据,并基于A/D转换器带来的OCS测量误差对失效判据进行了定量计算。以85℃作为加速热应力,设计了OCS的加速老化试验方案,并对试验数据进行了分析。分析结果表明:在95%的置信度水平下,被测的OCS在常态温度下的预计使用寿命为22 a。Since the service life of OCS （Optical Current Sensor） can＇t be assessed according to field data, life assessment method based on the accelerated aging test is proposed for the magneto-optic glass-type OCS. The failure mechanisms and failure modes of OCS based on the principle of Faraday magneto-optic effect are analyzed and the variation of its insertion loss is taken as the criterion of its failure. The failure criterion is calculated quantificationally based on the measuring error of ADC. A scheme of accelerated aging test with 85 ℃ as its accelerated thermal stress is designed for OCS and the test data are analyzed, which shows that,with 95% confidence level,the estimated service life of the OCS investigated is 22 years at normal temperature.

关 键 词：光学电流传感器 加速试验 寿命评估 损耗 测量误差 无源光器件 

分 类 号：TM930[电气工程—电力电子与电力传动]