110 kV主变压器间隙保护的整定及运行研究

结合国内频繁发生110 kV线路接地故障，而线路末端110 kV主变间隙保护动作跳主变三侧开关的事件，重点分析了110 kV主变间隙保护的整定和110 kV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。

Gap protection setting of the 110 kV main transformer and research of the operation

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 c...