摘要
结合国内频繁发生110kV线路接地故障,而线路末端110kV主变间隙保护动作跳主变三侧开关的事件,重点分析了110kV主变间隙保护的整定和110kV线路保护的配合问题,对保护配置与整定提出了建议。按常规设计的变压器中性点间隙距离选择、间隙电流保护整定配合和对有关保护整定配合进行了改进,提出了切实可行的措施。
Combined with the frequent issue that the earth faults occur on the local 110 kV power line and then the main transformer CB trip off because the gap protection operates at the line end, it detailedly analyzes the gap protection settings and the coordination issues for the 110 kV line protection,and gives some advices for the protection configurations. Practicallys it chooses the gap distance for the transformer neutral point ,the settings of the gap current protection and the improvements for the protection coordination.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2009年第1期96-97,100,共3页
Power System Protection and Control
关键词
主变中性点
间隙保护
整定
保护配置
neutral point
gap protection
setting,protection configuration
