一起110kV实验变差动保护误动跳闸分析
Analysis of False Trip of 110 kV Experimental Variable Differential Protection
梁玉亮 1李明 2朱海 2冯杰成 1刘念奇 1鲁家阳1
作者信息
- 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
- 折叠
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.
Abstract
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Key words
differential protection/internal bridge connection/accident handling引用本文复制引用
出版年
2024
NETL
NSTL
万方数据