喀麦隆曼维莱水电站无压引水系统瞬变流分析

发布时间：2018-04-08 08:38

本文选题：曼维莱水电站　切入点：引水系统　出处：《水利水电技术》2017年10期

【摘要】：针对喀麦隆曼维莱水电站无压引水系统明渠的过流能力及其水力瞬变流特性,基于明渠水流的基本方程,推导得到了相应的特征隐式格式算法以及边界条件,建立了长明渠引水式水电站瞬变流分析的仿真模型,并进一步结合工程实例揭示系统的瞬变流特性。与二维水力仿真分析成果进行比较验证分析,可知该水电站水库和压力前池水位差为1.06 m的情况下,引水明渠过流能力不足以通过4×112.5 m~3/s的额定流量。融合明渠的水力特性和压力前池的水位波动特性,水电站水力—机械系统调节保证计算参数的控制值均满足要求,其中明渠出口(压力前池)最高水位为392.362 m,低于相应的渠道末端顶高程394.270 m,满足布置要求。水电站水力—机械系统的水力干扰和小波动过渡过程均满足稳定性要求,且调节品质优良。研究成果可为工程设计和电站运行提供可靠的技术支撑,在合理选择前池容积的前提下,实现对渠道引水能力、渠堤沿线高度和前池最大水位波动的有效控制。
[Abstract]:The simulation model of transient flow analysis of Chang-Open Channel diversion Hydropower Station is established, and the transient characteristics of the system are further revealed by an engineering example.The hydraulic characteristics of the open channel and the water level fluctuation characteristics of the pressure-forebay are integrated, and the control values of the calculation parameters of the hydro-mechanical system of the hydropower station meet the requirements.The maximum water level at the outlet of the open channel (pressure-forebay) is 392.362 m, which is lower than the top elevation of the corresponding end of the channel at 394.270 m, which meets the layout requirements.The hydraulic disturbance and small fluctuation transition process of hydro-mechanical system of hydropower station meet the requirement of stability and the quality of regulation is good.The research results can provide reliable technical support for the engineering design and operation of the power station. On the premise of reasonable selection of the volume of the forebay, the effective control of the channel diversion capacity, the height along the canal embankment and the maximum water level fluctuation in the forebay can be realized.
【作者单位】：中水北方勘测设计研究有限责任公司;
【分类号】：TV135.3;TV732

【相似文献】