摘要
针对抽水蓄能电站下水库滑动叠加组合的洪水调节计算,提出了基于分层计算的发电变化过程与动态预留库容相结合的洪水调节计算模型,以沿河抽水蓄能电站为例对模型参数进行了拟定和应用。结论表明:(1)多项式函数能较好地拟合水位库容关系曲线,缩短计算步长能够有效提升洪水调节计算的精度;(2)结合分层计算的发电变化过程和预留控制库容的变化情况,可同时保证发电流量不超泄与洪水不侵占发电库容,可提高抽水蓄能电站的发电和防洪效益;(3)模型考虑电站未发电与发电时遭遇洪水两种情景,可有效全面判别出抽水蓄能电站洪水组合的最不利方案。提出的抽水蓄能电站洪水调节计算模型可为类似工程提供经验参考和借鉴。
This paper proposes a model of flood regulation characterized by the combination of generation change process calculated in layers and dynamic reserved storage capacity based on sliding superposition combination and then formulates and verifies its parameters by taking Yanhe’s PSP as an example.The results show that:①it is the better way of fitting stage-capacity curve to choose polynomial function,and reducing the calculation step can improve the accuracy of flood regulation.②Combined with the process of PSP,flood regulation should al⁃ways pay attention to the change of stagnant reservoir capacity,which can simultaneously ensure that the flow of power generation does not exceed the discharge and the flood does not encroach on the reservoir capacity of power generation.In that way,it can improve the power gen⁃eration and flood control benefits of PSP.③By dividing the scenario of flood combination into two scenarios(power generation or not before encountering with flood),the most unfavorable one of PSP can be effectively and comprehensively discerned.The model of flood regulation proposed in this paper can provide necessary experiences for similar projects.
作者
李大成
朱天生
吴迪
马黎
项华伟
LI Da-cheng;ZHU Tian-sheng;WU Di;MA Li;XIAN Hua-wei(Power China Guiyang Engineering Corporation Limited,Guiyang 550081,Guizhou Province,China)
出处
《中国农村水利水电》
北大核心
2024年第1期244-250,256,共8页
China Rural Water and Hydropower
关键词
抽水蓄能
预留库容
滑动叠加组合
洪水调节计算模型
pumped storage power station
reserved storage capacity
sliding superposition combination
flood regulation model
