| 摘要 |
A method is provided for performing a transfer from gas fuel operation to liquid fuel operation in a gas turbine with a dual fuel system. The method includes initiating 930 a predetermined uncontrolled liquid fuel prefill flow rate through the liquid fuel system, sensing 985 an onset of the uncontrolled liquid fuel flow to the combustor nozzles, and initiating 1000 transfer from gas fuel operation to liquid fuel operation when the flow of uncontrolled liquid fuel at the combustor nozzles is sensed. The onset of uncontrolled liquid fuel flow to the combustor nozzles is determined by monitoring 945 changes of Fuel Normalized Power (FNP), a parameter sensitive to uncontrolled liquid fuel flow, and determining 970 when FNP exceeds a threshold algorithm value.
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