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葛洲坝水电站至三峡水电站蓄水发电以来,成为三峡水电站的反调节电站的作用越来越明显。葛洲坝电站通过机组增容改造工程,提高水能利用效率和增加发电能力灵活性。本文结合首批增容改造机组,通过分析比较不同原理机组主保护的配置方案和特点,指出新增加的高灵敏度零序电流型横差保护运行注意事项。
Gezhouba Hydropower Station to the Three Gorges Hydropower Station since the water storage, the Three Gorges hydropower station has become more and more the role of anti-regulated power station. Gezhouba Hydropower Station capacity expansion through the renovation project to improve water efficiency and increase power generation capacity flexibility. Based on the analysis and comparison of the configuration schemes and characteristics of the main protection of different principle units, this paper points out the new precautions for the operation of the high sensitivity zero-sequence current-mode transversal protection.