变电站电流互感器配置产生保护死区问题分析  

Problem Description of Protection Dead Zone Caused by TA Allocation in Substation

作　　者：张惠山[1] 王昭雷[1] 刘春平[1] Zhang Huishan Wang Zhaolei Liu Chunping(Hebei Electric Power Maintenance Company, Shijiazhuang 050070,Chin)

机构地区：[1]国网河北省电力公司检修分公司,石家庄050070

出　　处：《河北电力技术》2017年第3期34-36,62,共4页Hebei Electric Power

摘　　要：针对常规站及智能变电站有关保护用TA配置而出现保护死区的情况,分析相关出现保护死区的保护TA配置方案,对不同的设计思路进行了评价、比较,并给出了相应改进的解决方案。同时,基于预防保护死区问题,对相关TA配置方法从规划、设计到保护装置性能改进方面均给出了指导性建议。Pointed to the problem of protection dead zone caused by TA allocation in normal and smart substation,based on related references,this paper analyzes the different protection allocation ways which may produce the problem of protection dead zone.Evaluating and comparing with the various design thinking,based on preventing this problem occurring,a related improving method is presented.AT same time,in order to provent protection＇s dead zone,some good advices based on planning and design to improving the properties of protection equipment is given to the TA allocation method.

关 键 词：电流互感器 3/2接线 保护死区 速动保护 

分 类 号：TM76[电气工程—电力系统及自动化]