Fuel flow rate setting method, device for implementing said method, and gas turbine plant provided with said device
2016
A gas turbine fuel flow rate setting device (100) is provided with a flow rate ratio computing unit (160) and a flow rate computing unit (180). The flow rate ratio computing unit (160) accepts a parameter (CLCSO) correlated to the gas turbine output, and uses a pre-determined flow rate ratio relationship between the parameter (CLCSO) and fuel flow rate ratios between a plurality of premixing nozzle groups (54A, 54B) to determine a fuel flow rate ratio corresponding to the accepted parameter. The flow rate computing unit (180) uses the fuel flow rate ratio determined by the flow rate ratio computing unit (160) to obtain the flow rate of fuel to be supplied to each of the plurality of premixing nozzle groups (54A, 54B).
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