介绍四川石棉洪一水电站水轮机过速抬机的问题及改造处理。通过改造处理解决了高水头,高转速混流式机组的抬机问题,机组出力正常,振度摆度都有所降低,改进后的机组运行安全、稳定,满足用户的要求,获得用户的认可,抬机改造成功。 Describe the problems and improvement of over speed lifting of turbine in Hongyi Hydropower Station, Sichuan Province. Through the reforming and processing, the lifting problem of high-head and high-speed Francis units was solved, the unit output was normal and the vibration swing was reduced. The improved unit was safe and stable to meet the requirements of users and was approved by users. Lift machine transformation successful.