水轮发电机转子一点接地故障分析与处理  

Fault Analysis and Treatment of One Point Groundingof Hydrogenerator Rotors

作　　者：刘密富 LIU Mi-fu(Sichuan Huadian Luding Hydropower Co.,Ltd,Chengdu 610000,China)

机构地区：[1]四川华电泸定水电有限公司,四川成都610000

出　　处：《云南水力发电》2023年第9期286-288,共3页Yunnan Water Power

摘　　要：综合多起水轮发电机转子一点接地故障排查经验,提出了总体上按励磁测量保护回路、励磁直流回路、励磁交流回路对转子一点接地故障的回路检查方法,规范了故障排查流程,提高了排查效率。同时针对水轮发电机空载态报转子一点接地故障且故障点50%,从发生原理进行深入剖析、系统总结,采取相应措施为后续有效处理类似故障保障。This paper combines the experience of troubleshooting multiple single point grounding faults in the rotor of hydroelectric generators and proposes a circuit inspection method for rotor single point grounding faults based on excitation measurement protection circuit,excitation DC circuit,and excitation AC circuit.It standardizes the troubleshooting process and improves troubleshooting efficiency.At the same time,in response to the rotor grounding fault reported by the hydro generator under no-load condition with a fault point of 50%,indepth analysis and systematic summary of the occurrence principle are conducted,and corresponding measures are taken to ensure effective handling of similar faults in the future.

关 键 词：水轮发电机 转子一点接地 励磁交流回路 故障点50% 

分 类 号：TV734.2[水利工程—水利水电工程] TV737