Abstract:

The AC lubricating oil pumps (88QA) cannot be put into operation normally during the abnormal shutdown of the PG9171E gas turbines, which causes the low lubricating oil pressure and tripping. Through the analysis on the control logic of the AC lubricating oil pump, measures to optimize the control logic are proposed to ensure the safety of the unit.

Key words:

abnormal shutdown;AC lubricating  oil pump, control logic optimization