向家坝水轮发电机组设计中一些值得借鉴的经验

Experience of hydro generator design of Xiangjiaba Hydropower Station

向家坝水电站左右岸地下厂房装机8台单机额定出力为800 MW的机组,是目前我国和世界上单机容量最大的机组。由阿尔斯通公司承建的4台右岸机组已全部安全运行近1 a时间。向家坝水电站机组的成功运行是基于三峡水电站700 MW机组的成熟经验,因此总结和借鉴向家坝水电站机组设计的经验,对我国即将建设的乌东德、白鹤滩等1 000 MW级巨型机组的研发可提供有益参考。从影响机组性能的关键点出发,针对巨型机组的特点,总结了有价值的技术经验,希望加以利用及推广,使水电技术更加高效完善。

The underground hydropower station of Xiangjiaba Hydropower Station is equipped with 8 sets of 800MW units （ XJB units） , which is the largest single-power generator in the world. Now 4 units on the right bank designed by ALSTOM have safely operated for about one year. The successful operation of XJB units is based on the designing and operating experience of Three Gorge units （700MW）. So the experiences of the design of XJB units can be referred by the future 1000MW generators to be equipped in Wudongde and Baigetan Hydropower Stations. The key design that is critical to the generator performance is in-troduced in detail and some technical experiences are summarized aiming at the giant unit design.