一起差动保护误动作的故障分析及防范措施  

Analysis of Faults in a Case of Maloperation of Differential Protection and Related Protection Measures

作　　者：敖晓峰 姜贤武 陈珍珍 AO Xiaofeng;JIANG Xianwu;CHEN Zhenzhen

机构地区：[1]中国铁路南昌局集团有限公司供电部 [2]中国铁路南昌局集团有限公司工电检测所

出　　处：《电气化铁道》2023年第6期11-13,35,共4页Electric Railway

摘　　要：牵引变电所综合自动化系统保护装置动作通常由牵引供电设备故障引起,但个别情况下由保护装置状态不良引起。本文分析一起因保护装置状态不良引起牵引变电所主变差动保护动作跳闸的故障,通过检测试验数据及结果分析保护动作原因,并制定针对性防范措施,以杜绝类似故障再次发生。The action of comprehensive automation system protection device in traction substations is usually caused by faults in traction power supply equipment,but in some cases,it is caused by improper status of the protection device.The paper analyzes a fault caused by differential protection tripping of main transformer in a traction substation due to improper status of the protection device.After inspection of test data and results,the analysis is made for the cause of the protection action,and targeted preventive measures are established so as to prevent the similar faults from happening again.

关 键 词：主变差动 保护动作 交流插件 传感器 

分 类 号：U224.4[交通运输工程—道路与铁道工程]