关键词: 备自投装置, 动作逻辑, 备自投装置闭锁, 锦屏一级水电站

Abstract: When the main power supply for service power busbar of hydropower station blacks out, the backup automatic switch is expected to be activated to ensure the stable operation of the primary equipment. The paper introduces the design scheme and optimization measures of 10 kV backup automatic switch device of Jinping I Hydropower Station in brief. In device design stage, we focused on the analysis and study of the activation logical rationality, interlock reliability, and the distinctiveness under bulk capacity load. In consideration of possible problems, related effective measures are devised to ensure the correct activation of the backup automatic switch device in case of a blackout of the service power under special working conditions.

Key words: backup automatic switch, activation logic, backup automatic switch interlock, Jinping I Hydropower Station