金沙水电站厂房选型设计研究

Design of type selection for powerhouse of Jinsha Hydropower Station

金沙水电站是一座较典型且规模较大的低水头河床式水电站,具有洪水流量大、上下游水头差小、下游水深较深等特点。主要介绍了该电站厂房选型的设计思路,即根据坝址区河谷较宽,两岸岸坡完整且整体坡度较平缓的特点,选用了河床式水电站开发方案;同时分别对轴流转桨式和灯泡贯流式两种机组型式相应厂房的技术参数作了经济比选,确定了合适的厂房与机组型式。可为同类工程设计提供借鉴参考。

Jinsha Hydropower Station, a typical and large scale hydropower station across river with low water head, has the characteristics of large flood discharge, small water head difference between upper and lower reaches, large water depth at lower reaches. This paper mainly introduces the idea for selection design of powerhouse of the station. The scheme of a hydropower sta-tion across river is selected due to wide valley at dam site, integral bank slope on both banks and gentle gradient of slopes. The powerhouse type fit for the station and generating unit type are determined by comparing the technical parameters of two power-house types between Kaplan and bulb turbine units.