锦屏一级电站10kV备自投应用方案研究及改进

Study on application scheme of 10kV backup automatic switch in Jinping Ⅰ Hydropower Station and improvement

当水电站厂用电母线主供电源失电时,备自投装置应能正确动作,以保证主设备的稳定运行。对锦屏一级水电站的10 k V备自投装置的设计方案及其优化措施作了简单介绍。锦屏一级水电站10 k V备自投装置设计时重点对动作逻辑的合理性、闭锁的可靠性以及大容量负荷的特殊性等方面开展了分析研究,考虑到可能会出现的问题,制定出了相应的有效措施以保证厂用电在特殊工况下失电时,备自投装置均能正确动作。

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.