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根据某抽水蓄能电站实际水力布置情况,在分析其上库的实际充水特点和引水隧洞中明满流交替的水力特征的基础上,建立相应数学模型,采用特征隐式格式法求解有压管道非恒定流方程,优化了机组首次泵工况运行时的导叶开关规律及球阀关闭规律等关键因素,并利用优化后的关键因素对泵工况进行了大波动过渡过程计算,结果具有合理性。
According to the actual hydraulic arrangement of a pumped storage power station, based on the analysis of the actual water filling characteristics of the upper reservoir and the hydraulic characteristics of alternating full flow in the diversion tunnel, a mathematical model is established and the characteristic implicit scheme is adopted to solve the problem of pressure The unsteady flow equation of pipeline is used to optimize the key factors such as the switching rule of the guide vane and the ball valve closing rule during the first time of the pump working condition and to make the calculation of the large fluctuation transition process of the pump working condition by using the optimized key factors. Sex.