调压室对水电站输水系统小波动过渡过程的影响

为了减小水电站输水系统过渡过程中产生的水锤压力，常常会在输水系统中设置调压室。通过基于不考虑水体弹性的理论推导以及考虑水体弹性的数值模拟，对无调压室及有调压室两种方案下输水系统小波动的过渡过程进行比较分析，以便较为全面地对设置调压室或不设置调压室是否会对水电站输水系统小波动的过渡过程产生影响展开研究。研究结果表明：在相同布置条件下，无调压室及有调压室两种方案的输水系统的小波动过渡过程均是稳定的；设置有调压室的输水系统小波动的过渡过程要优于未设置调压室的输水系统小波动的过渡过程。从研究结果来看，设置调压室对水电站输水系统的小波动过渡过程具有改善作用。

Impacts of surge chamber on small fluctuation transition process of water conveyance system in hydropower plant

It is common to arrange a surge chamber in the water conveyance system of hydropower plants to reduce water-hammer pressure occurring during the transition process caused by small fluctuation. We compared and analyzed the small fluctuation in the transition process of water conveyance system with and without a surge chamber, in which water elasticity is considered and ignored respectively. The results show that under the same layout, both of the two schemes yield a rather stable transition process caused by small fluctuation; however, water conveyance system with a surge chamber performs better than that of the system without a surge chamber. The results reveal that setting up a surge chamber helps improve transition process of water conveyance system caused by small fluctuation.