分析了三峡水轮发电机组设计中必须考虑的主要问题；总结了所进行的关键技术研究；通过关键技术问题研究，使得三峡水轮发电机组参数达到最优化。机组运行结果表明三峡水轮发电机组性能良好，能够长期安全、稳定、高效运行，从而有效地验证了对三峡巨型水轮发电机组的总体技术设计是科学合理的。

In view of the specified design conditions of Three Gorges Project (TGP), the main technical problems that should be considered in the design of hydro turbine generating units are analyzed. The key technical researches performed are summarized and the parameters of hydro turbine generating units are optimized through the study on key technical problems. The unit operation results indicate that the performance of the hydro turbine generating units is excellent, and the units can operate in a safe, stable and highly efficient mode for a long term. Therefore, it is verified effectively that the general technical design of giant hydro turbine generating units is scientific and rational.