如美水电站单机容量与额定转速选择分析

Analysis on Selections of Unit Capacity and Rated Speed for Rumei Hydropower Station

如美水电站地处西藏高海拔地区,装机容量较大,单机容量的选择,既要考虑电站的造价,也要考虑藏区大件运输及枢纽布置条件,更注重大型水轮发电机组设计、制造的可行性,以及机组运行的安全、稳定等因素。考虑了以上因素,对电站的单机容量、机组台数、额定转速进行选择分析。经过分析比较,如美水电站推荐装机4×525 MW,机组额定转速选用166.7r/min是合理可行的。

Rumei hydropower station locates in high altitude area in Tibet and has great installed capacity. Not only cost of power station but also transportation conditions of large members and the layout of hydro-junction shall be con- sidered in the selection of unit capacity. Besides, the feasibility of design and manufacture of large and heavy hy- dro-generating unit and the safe and stable operation of unit shall also be considered. Therefore, the unit capacity, the number of units and the rated speed are analyzed and compared. The result shows that the installed capacity of 4 × 525MW and the rated speed of 166.7r/min proposed for Rumei hydropower station are feasible and reasonable.