金沙水电站水轮发电机组选型设计研究与实践

Study on selection and design of turbine-generator unit for Jinsha Hydropower Station

金沙水电站具有低水头的特点,可选用灯泡贯流式和轴流转桨式水轮发电机组。从技术、经济、运行稳定性和运行维护等方面,对这两种机型进行了综合比较分析,确定金沙水电站采用轴流转桨式水轮发电机组。基于电站装机台数和额定转速比选,确定了水轮发电机组的主要性能参数。研究成果可为同水头段水轮发电机组选型设计以及同类型大中型机组安全稳定高效运行提供借鉴。

According to the characteristics that the water head of Jinsha hydropower station is in the low water head range,bulb tubular turbine and Kaplan turbine can be selected.The two types are comprehensively compared and analyzed from the aspects of technology,economy,operation stability and operation maintenance,and it is determined that Jinsha hydropower station adopts Kaplan type turbine-generator unit.Based on the comparison and selection of the installation number of the units and the rated speed of the unit,the main performance parameters of the turbine-generator unit are determined.The research results can provide some reference for the type selection design of the turbine-generator unit in the same head range and the safe,stable and efficient operation of similar large and medium-sized turbine-generator units.