变压器差动保护动作原因分析  

The Causes of Transformer Differential Protection Action are Briefly Analyzed

作　　者：王国光 Wang Guo-Guang

机构地区：[1]山西北方铜业有限公司动能分公司,山西垣曲043700

出　　处：《电力系统装备》2022年第2期63-65,共3页Electric Power System Equipment

摘　　要：对110 kV中条动能变电站两台容量为25 MVA的三卷变压器保护装置改造后,由于接线错误致使两台主变相继跳闸,造成全站停电的事故。根据保护动作情况进行了分析,总结了经验教训,并提出了改进措施。In this paper,after the transformation of two 25 MVA three-coil transformer protection devices in 110 kV Zhongtiao kinetic energy substation,the two main transformers are tripped successively due to wiring errors,resulting in power failure of the whole station.Based on the analysis of protection action,experience and lessons are summarized and improvement measures are put forward.It can be used for reference by other transformer and distribution operation units.

关 键 词：变压器 复压过流 差动保护 跳闸 措施 

分 类 号：TM772[电气工程—电力系统及自动化]