新型变压器铁芯接地电流在线监测装置的设计和应用  

Design and Application of a New Type of Online Monitoring Device for Transformer Core Earthing Current

作　　者：梅凡[1] 金剑[1] 孙进[1] 徐友刚[1] 沈伟[1] 

机构地区：[1]国网上海市电力公司青浦供电公司,上海201799

出　　处：《电力与能源》2016年第3期311-313,共3页Power & Energy

摘　　要：针对目前变压器铁芯接地电流检测精度低、时效差的问题,设计了一种新型变压器铁芯接地电流在线监测装置。采用高精度穿心式电流互感器及时获取真实铁芯接地电流信号,结合软硬件电路系统设计与通信技术,该装置能够实现变压器铁芯电流实时监测、越限报警、数据存储和查询功能。目前,该装置已经在上海青浦地区部分变电站投入使用,运行效果良好,表明该装置具有可行性与实用性。In view of the current problem of the low detection precision and low efficiency,this paper presents a new type of on-line monitoring device of transformer core earthing current.By using high precision straightthrough current transformer to get the real signal of transformer core earthing current in time,combined with the software and hardware circuit system design and communication technology,the device has realized the functions of real-time monitoring of transformer core earthing current,core earthing current limit alarm,and data storage and query.At present,the device has been applied in some transformer substations in Qingpu District of Shanghai,and works well,which indicates that the device is feasible and practical.

关 键 词：变压器 铁芯接地电流 在线监测 

分 类 号：TM41[电气工程—电器]