一起110 kV实验变差动保护误动跳闸分析  

Analysis of False Trip of 110 kV Experimental Variable Differential Protection

作　　者：梁玉亮 李明 朱海 冯杰成 刘念奇 鲁家阳 LIANG Yuliang;LI Ming;ZHU Hai;FENG Jiecheng;LIU Nianqi;LU Jiayang(State Grid Jiangsu Electric Power Co.,Ltd.Xinghua Power Supply Branch,Jiangsu Xinghua 225700,China;Marketing Service Center of State Grid Jiangsu Electric Power Co.,Ltd.,Jiangsu Nanjing 210000,China)

机构地区：[1]国网江苏省电力有限公司兴化市供电分公司,江苏兴化225700 [2]国网江苏省电力有限公司营销服务中心,江苏南京210000

出　　处：《农村电气化》2024年第7期89-90,共2页Rural Electrification

摘　　要：针对一起内桥接线形式的变电站,在主变保护改造期间,由于母联差动电流回路短接引起变压器误动跳闸,损失了大量重要负荷的事故案例,分析保护误动的原因及变电站主变保护改造期间暴露的问题,为处理类似情况提供借鉴。This paper aims at a substation with internal bridge connection,during the main transformer protection transformation,due to the busbar differential current circuit short-circuiting caused the operation transformer to trip by mistake,loss of a large number of important load accident case,analysis of the reasons for the protection of misoperation and the problems exposed during the main transformer protection transformation,provide reference for similar situations.

关 键 词：差动保护 内桥接线 事故处理 

分 类 号：TM736[电气工程—电力系统及自动化]