低水头水电站水轮机机型比选分析

雷公滩水电站属于低水头水电站,其水库仅具有日调节性能,因此,机组型式的选择及额定水头的确定将会直接影响到整个工程的投资规模和后期的经济效益。综合考虑该水电站处于交界水头的实际情况,通过对不同机型的投资、能量特性等方面展开分析,对不同额定水头方案下水轮机的运行稳定性、经济效益等方面的参数进行比较,最后确定雷公滩水电站采用灯泡贯流式机组,额定水头选取为14.53 m。

Comparison and determination of hydraulic turbine type of low-head hydropower stations

Leigongtan Hydropower Station is a low head one with reservoir of daily regulation performance, so the unit parameter and rated head of the hydraulic turbines in selection will directly affect the investment and the economic benefits of the project. By comprehensively considering the fact that the hydropower station is in a boundary water head zone, and through the analysis of the investment and energy characteristics of different units under different rated head solutions, we compared the running stability and economic benefits of the units in selection. Finally, the Leigongtan Hydropower Station adopts Bulb tubular turbine and the rated head is 14.53m.