초록 ▼

An actual Wobbe Index is calculated for a turbine and compared to a reference Wobbe Index. By comparing the actual and reference Wobbe Indices and recognizing that the reference Wobbe Index has acceptable combustion dynamics, a measure of the combustion dynamics of the operating turbine can be obtai

An actual Wobbe Index is calculated for a turbine and compared to a reference Wobbe Index. By comparing the actual and reference Wobbe Indices and recognizing that the reference Wobbe Index has acceptable combustion dynamics, a measure of the combustion dynamics of the operating turbine can be obtained. To lower the possibility of combustion dynamics, causing combustor distress, a feedback signal is provided to change the temperature of the fuel gas provided the combustor. Since the Wobbe Index is a function of temperature and fuel composition, the variation in temperature can be effected to change the Wobbe Index to a reference Wobbe Index having known low combustion dynamics.

대표청구항 ▼

[ What is claimed is:] [1.] A method for controlling combustion dynamics in a combustor for a turbine, comprising the steps of:determining volumetric flow of fuel input to the combustor;determining heat input to the turbine;generating a first parameter based on the volumetric flow of fuel to the tur

[ What is claimed is:] [1.] A method for controlling combustion dynamics in a combustor for a turbine, comprising the steps of:determining volumetric flow of fuel input to the combustor;determining heat input to the turbine;generating a first parameter based on the volumetric flow of fuel to the turbine and the heat input to the turbine representing actual fuel conditions including composition and temperature of the fuel supplied to the combustor;comparing the first parameter with a second parameter based on anticipated fuel conditions; andcontrolling the temperature of the fuel input to the combustor in accordance with the comparison of the first and second parameters to control the combustion dynamics of the combustor.