独立式电流互感器的安装对继电保护影响的研究  

Effect on relay protection of installing method of independent CT

作　　者：王泱[1] 及洪泉[2] 冯毅[3] 李熙钦[2] 

机构地区：[1]华北电力大学,河北保定071003 [2]北京市电力公司,北京100031 [3]邢台供电公司,河北邢台054001

出　　处：《电力系统保护与控制》2009年第24期114-117,128,共5页Power System Protection and Control

摘　　要：继电保护与独立式电流互感器的一次侧极性端的安装方式密切相关,非正确安装可能影响继电保护的动作行为,造成事故停电范围扩大。通过分析和比较独立式CT的不同安装方式对不同类型继电保护的影响,得出了独立式CT的正确安装方法,并给出了CT非正确安装时的几种弥补措施,同时指出其不足之处。电子式电流互感器二次侧原理与电磁型CT不同,能够彻底解决独立式CT非正确安装方式对继电保护的影响。Performances of relay protection is related to the primary winding＇s polarity of independent CT with its installing method closely. Incorrect installing method may cause different performances of relay protection, which maybe enlarge the influence of forced outage. Through analyzing and comparing with the influences to Varying relay protection caused by different installing method of CT, correct installing method of CT are given, and at the same time some remedial measures with their defects are proposed. The ECT is commended to completely solve the influence caused by incorrect installing methods of independent CT to the relay protection, which has smart and convenient performances and different secondary theories.

关 键 词：电流互感器(CT) 电子式电流互感器(ECT) 极性 继电保护 

分 类 号：TM773[电气工程—电力系统及自动化] TM452