石头河水库水电站1号机组改造方案研究

Study on Reconstruction Scheme of 1^(#)Hydroelectric Generating Set of Shitouhe Reservoir Hydropower Station

近年来,随着石头河水库功能及运行方式的变化,水库在高水位运行的工况时长增加,原有的坝后水电站1#机组运行水头范围偏窄,造成机组年利用小时数低下,电站运行效益不能正常发挥。本文比较系统地介绍了在装机容量不变情况下,通过对机组的局部改造,实现了机组适用水头的提高,减小引水流量,提高机组效率,达到增加发电量的目的;对今后类似水电站机组改造技术研究和应用,特别是老电站机组改造,具有十分重要的参考价值。

In recent years,with the change of the function and operation mode of the Shitouhe reservoir,the operation time of the reservoir at high water level has increased,and the water head range of unit 1^(#)of the original hydropower station after dam is low,resulting in low annual utilization rate and difficulty in normal utilization.In this paper,it is systematically introduced that under the condition that the installed capacity remains unchanged,through the local transformation of the unit,the applicable water head of the unit is increased,the water diversion flow is reduced,the efficiency of the unit is improved,and the power generation is increased.It is of great reference significance to the research and application of similar unit reconstruction technology of hydropower station in the future,especially old unit reconstruction of hydropower station.