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以三峡电站为背景对大型水电站动态仿真的主要问题进行了研究。对几种用于明满交替流动计算的方法进行了比较分析，提出了特征隐式格式法求解明满交替流动，具有良好的稳定性；提出了管流和明流联合计算的变时步模型，在保证计算精度的前提下减少了计算量，使大型水电工程的动态仿真得以在微机上实现；提出了一种新方法（对数曲线投影法）描述转轮特性，与Ｓｕｔｅｒ法比较，新方法完全解决了转轮特性曲线描述中小开度与零开度以及多值的问题，小开度区计算结果没有异常的压力脉动，转化过程简单，运算速度快，精度高。应用上述方法编制了过渡过程仿真程序，对三峡电站的各种工况进行了动态仿真计算，得到了满意的计算结果
Taking the Three Gorges Power Station as the background, the main problems of the dynamic simulation of large hydropower stations are studied. A comparative analysis of several methods used in Ming-Ming alternate flow calculation is proposed, and the characteristic implicit scheme method is proposed to solve the problem of full-flow alternate flow with good stability. A variable time-step model combining pipe flow and open flow is proposed , The computational complexity is reduced while the computational accuracy is guaranteed, and the dynamic simulation of large hydropower projects can be realized on a microcomputer. A new method (logarithmic curve projection method) is proposed to describe the characteristics of the rotor. Compared with the Suter method, the new The method fully solves the problem of small opening, zero opening and multi-value in the description of the rotor characteristic curve. The calculation result of the small opening area has no abnormal pressure pulsation, the conversion process is simple, the calculation speed is fast, and the precision is high. Applying the above method, the simulation program of transition process was compiled and the dynamic simulation of various operating conditions of the Three Gorges Power Station was carried out. The satisfactory calculation results were obtained