水轮机过速事故的案例回顾及原因分析

Review and Analysis of Turbine Over-speed Accidents

水轮机过速是水电站较为严重的事故种类之一。通过回顾两起典型过速事故,剖析技术上和管理上的缺陷,发现过速类事故存在较多的共同点,在防范上具有相通性。加强调试、验收和检修管理工作,提高管理人员的技术水平是防范的关键。正处于设备调试期的水电站可吸取经验,扎实做好调试验收工作。

Turbine over-speed is one of the serious accidents in hydropower station. With the review of two typical acci-dents, techniques and management defects are analyzed to identify the similarities in over-speed accidents, which shares common characteristics in preventive measures. Strengthening preliminary test, inspection and maintenance manage-ment, improving the technical level of workers are essential in prevention. Hydropower stations in equipment commissio-ning period can learn from experience to make a good performance in preliminary test and inspection