岩滩水电站水轮机转轮分析对比

Comparative Analysis on Turbine Runners for Yantan Hydropower Station

广西岩滩水电站一期工程装有4台混流式水轮发电机组,总装机容量1 210 MW,水轮机模型为A286a,1995年全部建成发电;2003年将3号水轮机改造为A773a模型转轮,之后陆续将另外3台机组水轮机全部更换为A773b模型转轮。于2010年10月动工的二期扩建工程装机2×300 MW,水轮机模型为A964,二期首台机组于2013年11月25日投入商业运行。文章对岩滩水电站不同的水轮机转轮进行分析对比,探讨水电站设计时影响水轮机转轮选择的重要因素。

AThe phase-I project of Yantan Hydropower Station has four Francis hydro-generating units with a total in- stalled capacity of 1210MW, whose turbine runner model is A286a and the project was fully completed and put into operation in 1995. The No.3 turbine runner is replaced with A773a model runner in 2003 and the other three runners were replaced with A773b model runner one after another. The Extension Project of Yantan Hydropower Station was commenced in October 2010, which is equipped with two hydro-generators with single capacity of 300MW and whose turbine runner model is A964. The first unit of the Extension Project was put into commercial operation on November 25, 2013. In this paper, the various turbine runners for Yantan Hydropower Station are analyzed and compared, and the factors affecting the selection of turbine runner are discussed.