电流互感器多点接地故障在线监测技术研究  

Research on Online Monitoring Technology of Multi-Point Grounding Fault of Current Transformer

作　　者：布赫[1] 王志忠 王永胜[1] 吴文键 Buhe;WANG Zhizhong;WANG Yongsheng;WU Wenjian(Ulanqab Electric Power Bureau,Ulanqab 012000,China;Guangzhou Qianshun Electronic Equipment Co.,Ltd.,Guangzhou 510000,China)

机构地区：[1]乌兰察布电业局,内蒙古乌兰察布012000 [2]广州市仟顺电子设备有限公司,广州510000

出　　处：《内蒙古电力技术》2018年第3期7-10,24,共5页Inner Mongolia Electric Power

摘　　要：针对电流互感器二次侧多点接地对继电保护装置安全运行的影响,根据保护接地电缆电流变化特征提出了1种在线监测电流互感器多点接地故障的方法;通过建立电流互感器二次侧多点接地电路模型,计算了接地特征参数;研制了电流互感器多点接地故障在线监测装置,实际应用效果表明,该装置能够实时监测TA二次侧多点接地故障。To the influence of multipoint grounding on relay protection operation of the secondary side of the current transformer,according to the characteristics of protective grounding cable current,one online monitoring method of TA grounding fault was proposed.Through setting the model of multipoint grounding,calculated the parameters of rounding fault characteristics.An online monitoring device was developed,the practical application result showed that the device could monitor the multipoint grounding of secondary side,solved fault monitoring problems of TA multipoint grounding.

关 键 词：电流互感器 多点接地故障 在线监测 保护误动 电势差 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置] TM452[自动化与计算机技术—控制科学与工程]