Abstract: Abstract:After a whole plantscope power outage accident occurred, the normal operation of the turbine lubricating oil system is one of the necessary conditions for ensuring the units safe shutdown and preventing the accident of lubricating oil interruption and bearing bush burning. Combining with practical example, the operation mode of oil pump of lubricating oil system and the reasons causing the turbine lubricating oil temperature rising were analyzed. The measures were proposed to ensure normal operation of the turbine lubricating oil system under whole plantscope power outage condition.

Key words: Key words:whole plantscope power outage, lubricating oil interruption and bearing bush burning, emulsification of oil, control measure