论文部分内容阅读
长江三峡水电站是世界上在建的最大水电站。电站水头变幅大：汛期低水头运行，枯期高水头运行持续时间长。三峡机组的参数选择除应满足低水头时多发电的要求外，还应保证水轮机在高水头时稳定运行。为此对如何合理地确定水轮机设计水头和适当增大发电机容量以改善运行稳定性问题进行论述，并对机组结构型式和发电机冷却方式也作了分析研究。
The Three Gorges Hydropower Station is the largest hydropower station under construction in the world. Hydropower station large amplitude: low head run in flood season, dry head running high for a long time. In addition to the parameters of the Three Gorges unit should meet the low head requirements of more power generation, but also should ensure that the turbine in the high head stable operation. This paper discusses how to reasonably determine the head of the turbine and how to increase the capacity of the generator to improve the operation stability. The structure type of the turbine and the cooling method of the generator are also analyzed.