【摘要】 目前三峡左岸电站采用引进发电机组，已确定了合理的保护方案。文中参考三峡机组的故障仿真数据，考虑未来采用国产机组后保护配置可能的变化，讨论了大型水电站发电机内部短路的主保护方案，以供参考。该方案包括了横差保护、故障分量负序功率方向保护和不完全纵差保护的综合应用。更多还原

【Abstract】 At present, the generators of Three Gorges Left Power Station are decided to be imported from foeign cmpany. The reasonable main protection scheme for them has been decided. Based on fault simulation data of one of those generators, and the possible changes of protectioon for domestic generators to be used in the future, this paper presents the main protection scheme for generators of other large-sized hydroelectric power station in China. The scheme includes the transverse differential protection, the directional relay action on negative sequence power of fault component and the incomplete differential protection.更多还原