电流互感器磁饱和特性对继电保护的影响及防范  

Impact of Magnetic Saturation Characteristics of Current Transformers on Relay Protection and Its Prevention

作　　者：马显映 刘小状 陈小松 MA Xianying;LIU Xiaozhuang;CHEN Xiaosong(Yunnan Yunlu Zexin Aluminum Industry Co.,Ltd.,Qujing 655500,China)

机构地区：[1]云南云铝泽鑫铝业有限公司,云南曲靖655500

出　　处：《电工技术》2023年第22期190-192,共3页Electric Engineering

摘　　要：国内目前对电流互感器的研究,很少以分析其磁饱和特性为主,相关研究中关于其对继电保护的影响较少,且未提出有效防范措施。为此,基于理论与实践,概述了电流互感器饱和对继电保护装置的影响,分析了电流互感器的饱和原因,结合实际案例,探讨了电流互感器饱和对差动保护与速断保护的影响,最后提出了有效的继电保护防范措施。Few of thepresent domesticstudies on current transformers in Chinafocus mainly on analyzing magnetic saturation characteristics and their impact on relay protection,with conceivably no effective preventive measures proposed.Based on theory and practice,this article first outlines the impact of current transformer saturation on relay protection devices,analyzes the reasons for current transformer saturation,and based on practical cases,explores the impact of current transformer saturation on differential protection and quick break protection.Finally effective protective measures for relay protection are proposed.

关 键 词：电流互感器 磁饱和 继电保护 

分 类 号：TM451[电气工程—电器]