关键词: 输水系统, 调压室, 小波动, 过渡过程, 水电站

Abstract: 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.

Key words: water conveyance system, surge chamber, small fluctuation, transition process, hydropower plant