Extension of Diesel Generator Set Backup for 400V Auxiliary Power of Letan Hydropower Station

In case of auxiliary power outage for a long time,the extended diesel generator set for Letan hydropower station can also provide electric power for the important loads such as hydraulic oil system of unit governor,gate hoist for power house leakage drainage and overflow dam etc.,so as to avoid serious incidents such as out of control of guide vane,inundation of power house and overflow dam gate etc..In addition,because the hydropower station is located at the center of Guangxi power grid,whose switch station is the critical switch station of Guangxi power grid and is closely related to Nanning,Hech,Yizhou and other load centers.Therefore,the extended diesel generator set makes Letan hydropower station becoming another ideal black-start power supply point of Guangxi power grid.