Analysis and Treatment of Extended Lean-lean Mode in 9E Gas Turbine
In response to extended lean-lean mode that occurred during the operation of the 9E gas turbine,this article introduced the occurrence,characteristics,and hazards of this abnormal combustion mode,analyzed its control logic,and finally proposed handling measures based on fault cases.The results show that there are five situations that could lead to extended lean-lean mode,including zone 1 reignition,combustion failure,blowing failure,selecting"Lean-Lean Base Mode",and selecting"Fast Start".The main handling measures included:reducing the load to lean-lean mode,switching to high load premixing,solving cleaning and combustion faults,and preventing human error operations.The work done could provide technical reference and guidance for similar units to prevent and deal with extended lean-lean mode.
gas turbineextended lean-lean modeMark VIe control logichandling measures
万方数据
维普
