110kV变电站继电保护用电流互感器典型配置分析  

Typical Configuration Analysis of Current Transformers for Relay Protection in 110 kV Substations

作　　者：杨文丽 罗敏 杨嘉 保积秀 李艳 YANG Wenli;LUO Min;YANG Jia;BAO Jixiu;LI Yan

机构地区：[1]国网青海省电力科学研究院,青海西宁810000

出　　处：《青海电力》2022年第2期1-3,18,共4页Qinghai Electric Power

摘　　要：通过一起电流互感器内部故障时保护动作行为的分析,指出110 kV变电站保护用电流互感器绕组配置方案存在的严重缺陷,当故障点在断路器和电流互感器之间时会出现保护死区,威胁电网的安全稳定运行。对110 kV变电站保护用电流互感器典型配置方案进行了分析,提出了消除保护死区的解决措施。可为继电保护专业技术人员提供借鉴。Through the analysis of the protective action behavior of a current transformer internal fault,it is pointed out that there are serious defects in the current transformer winding configuration scheme for protection in 110 kV substations.When the fault point is between the circuit breaker and the current transformer,the protection dead area,threatening the safe and stable operation of the power grid.The typical configuration scheme of the protection current transformer in 110 kV substation is analyzed,and the solutions to eliminate the protection dead zone are proposed.It can provide reference for professional and technical personnel of relay protection.

关 键 词：电流互感器 继电保护 配置 

分 类 号：TM774[电气工程—电力系统及自动化]