基于合成概率法的光学电流互感器运行可靠性  

Operation Reliability of Optical Current Transformer Based on Synthetic Probability

作　　者：肖燕 李军 庞福滨 许婧 XIAO Yan;LI Jun;PANG Fubin;XU Jing(China Electric Power Research Institute,Haidian District,Beijing 100192,China;DC Technical Center of State Grid Corporation of China,Xicheng District,Beijing 100032,China;Electric Power Research Institute of State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 211103,Jiangsu Province,China)

机构地区：[1]中国电力科学研究院有限公司,北京市海淀区100192 [2]国家电网有限公司直流技术中心,北京市西城区100032 [3]国网江苏省电力有限公司电力科学研究院,江苏省南京市211103

出　　处：《电网技术》2022年第1期336-342,共7页Power System Technology

基　　金：国家电网有限公司科技项目:“换流站光学直流电流互感器可靠性提升与故障预警技术研究”。

摘　　要：光学直流电流互感器的应用日益广泛,其运行可靠性可实时反映设备运行状况。基于合成概率法,研究光CT运行时指向不同元件不同缺陷的常见状态量与其运行状态之间的关系。重点分析了多状态量从不同原理指向同一缺陷的情况下,如何计算光CT的运行可靠性。通过案例证明,在已知各状态量数值及变化趋势的基础上,利用所提方法得到的光CT运行可靠性与多位专家的经验结果相近,表明了该方法的有效性,为直流光CT的运行可靠性研究提供一种新的思路。As its operation reliability can reflect the operation status of equipment in real time, the optical DC current transformer is widely used. Based on the synthetic probability method, this paper studies the relationship between the common state quantities pointing to different defects of different components and their operating states. This paper focuses on how to calculate the operation reliability of the optical CT when multiple state quantities point to the same defect from different principles. The case shows that the operation reliability of the optical CT obtained by this method is similar to the empirical results of many experts, which shows the effectiveness of this method and provides a new idea for the research of the operation reliability of the DC optical CT.

关 键 词：光学电流互感器 合成概率法 运行可靠性 

分 类 号：TM721[电气工程—电力系统及自动化]