侯阎线新绛变电所主变差动保护动作分析

Analysis of Main Transformer Differential Protection Actions in Xinjiang Substation of Hou-Yan Railway

针对侯阎线新绛变电所运行中的2#主变压器差动保护动作跳闸,自投1#变压器运行失败,造成全所停电及中断行车的一起事故,通过分析差动保护动作过程、原因及对应急操作过程进行梳理,总结既有保护系统存在的不足,并提出相应解决方案,以期对牵引供电运维有所启示和帮助。

With regard to an accident occurred at Xinjiang substation where there are differential protection tripping actions of No.2 main transformer,and the self-switching in of No.1 transformer has been failed,causing the power off of the whole substation and interruption of train running,and by analyzing and sorting action process,causes,and emergency operation process in course of potential protection tripping,the paper summarizes the deficiency of the existed protection system,puts forward relative solution schemes,for providing of inspiration and help for traction power supply operation and maintenance.