华电技术 ›› 2018, Vol. 40 ›› Issue (12): 16-19.

• 技术交流 • 上一篇    下一篇

一起600MW水轮发电机定子绕组损毁的故障分析

  

  1. 构皮滩发电厂,贵州遵义〓564408
  • 出版日期:2018-12-25 发布日期:2019-01-28

Fault analysis of a 600MW hydrogenerator stator winding damage

  1. Goupitan Power Plant, Zunyi 564408,China
  • Online:2018-12-25 Published:2019-01-28

摘要:

某大型水电站1台600MW发电机组在开机未并网期间突然发生发电机差动保护、定子接地保护动作,导致开机失败。通过对此次故障前后的保护动作记录及故障录波数据分析,对损伤的发电机定子线棒、铁心和导致故障的转子磁极挡块进行检修处理,彻底解决了本次故障。从继电保护专业,对该故障的检修处理过程进行了分析并提出了改进建议。

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Abstract:

The differential protection and stator grounding protection of a 600MW generator set in a large hydropower station suddenly operated during generator starting before griding,which caused the startup failure. Through the analysis on the protection action record and the fault recorded data before and after the fault, treatment and repair were made on the stator coil bar,the core and the rotor pole block that caused the fault.The fault was completely solved. The troubleshooting process is analyzed and suggestions for improvement are put forward from the relay protection.

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