火电机组进相运行引起失磁保护动作事故分析  

Analysis of Accident of Loss of Excitation Protection Action Caused by Leading Phase Operation of Thermal Power Unit

作　　者：刘玮 LIU Wei(Fujian Huadian Kemen Power Generation Co.,Ltd.,Fuzhou 350512,China)

机构地区：[1]福建华电可门发电有限公司,福建福州350512

出　　处：《电工技术》2021年第19期169-170,共2页Electric Engineering

摘　　要：针对一起600 MW超临界火电机组的跳机事故,通过分析机组跳闸时的报警信息和运行参数,明确了发电机进相运行是导致励磁系统失磁保护动作的直接原因,进而探讨造成此次事故的影响因素,并给出相应建议,以有效避免类似事件的再次发生,提高火电机组安全稳定运行水平。A trip accident of 600MW supercritical thermal power unit is introduced.By systematically analyzing the alarm information and operation parameters when the unit trips,it is clear that the leading phase operation of generator is the direct cause of excitation system loss of excitation protection action.Then,the influencing factors of the accident are analyzed,and corresponding suggestions and improvement measures are given.Corresponding suggestions are given to effectively avoid the recurrence of similar events and improve the safe and stable operation level of thermal power units.

关 键 词：火电机组 进相 失磁 励磁 

分 类 号：TM621[电气工程—电力系统及自动化]