双采样光学电流互感器的可靠性与适用性分析  

Analysis of Reliability and Applicability of Optical Current Transformer Based on Double Sampling

作　　者：于文斌[1] 肖智宏 刘颖 尹东 高旭 申洪明 张效 YU Wenbin;XIAO Zhihong;LIU Ying;YIN Dong;GAO Xu;SHEN Hongming;ZHANG Xiao(School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin,Heilongjiang 150001,China;State Grid Economic and Technological Research Institution Co.,Ltd.,Beijing 102209,China;State Grid JIBEI Electric Power Co.,Ltd.,Beijing 100053,China;State Grid Beijing Power Company,Beijing 100031,China)

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]国网经济技术研究院有限公司,北京102209 [3]国网冀北电力有限公司,北京100053 [4]国网北京市电力公司,北京100031

出　　处：《广东电力》2020年第10期34-45,共12页Guangdong Electric Power

基　　金：国家自然科学基金项目(51877047);河北省引进留学人员资助项目(C20200301);国家电网有限公司科技项目(B3441518K002)。

摘　　要：为提升双采样光学电流互感器(optical current transformer,OCT)双重化配置系统的经济性和可靠性,建立OCT的可靠性模型,依据军用标准GJB/Z 299C—2006《电子设备可靠性预计手册》,结合部分元器件试验数据,采用元器件计数法和应力分析法对OCT进行可靠性预计,分析比较采用双套独立方案和单套双采样方案构成的双重化配置系统的可靠性指标和经济性指标,获得OCT的设备失效率和平均寿命,以及不同双重化配置系统的失效率和可靠度等指标。分析结果表明:与双套独立方案相比,单套双采样方案以小幅降低可靠性的代价,大幅降低了系统应用成本,显著提高了OCT的工程适用性,有利于OCT产品的工程推广和应用。In order to improve the economy and reliability of the double configuration system of dual sampling optical current transformer,the reliability model of optical current transformer(OCT)was established.According to the military standard GJB/Z 299C-2006,combined with the test data of some components,the reliability of OCT was estimated by the component counting method and stress analysis method.The reliability indexes and economy indexes of two double configuration systems were respectively analyzed and compared by adopting two independent sets and one single set with double sampling circuits,and the reliability indexes such as the average service life,the equipment failure rate of OCT and the system failure rate,reliability of different double configuration were obtained.The analysis results show that the cost of OCT is greatly reduced by slightly reducing the reliability,which could improve the engineering applicability of optical current transformers,and which is helpful for the engineering application of optical current transformers.

关 键 词：光学电流互感器 双采样 可靠性 适用性 失效率 继电保护 

分 类 号：TM452.92[电气工程—电器]