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介绍了瀑布沟水电站水轮发电机组20Hz注入式100%定子接地保护,叙述了其基本原理、调试方法以及运行过程中的注意事项,同时对一起保护误动作进行分析并采取了防范措施。
This paper introduces the 20Hz injection 100% stator grounding protection for hydrogenerator of Pubugou Hydropower Station. The basic principle, debugging method and precautions during operation are described. At the same time, a protective operation is analyzed and preventive measures are taken.