Automated tuning of multiple fuel gas turbine combustion systems
First Claim
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1. A method for automated control of a combustion turbine fuel composition through automated modification of a ratio of fuel gas, comprising:
- providing a first fuel source;
providing a second fuel source;
supplying fuel to a combustion turbine in a blend of fuel from the first source and second source;
specifying one or more first tuning priorities, wherein the specifying comprises selecting or de-selecting the one or more first tuning priorities or selecting a value in a range for the one or more first tuning priorities and wherein the specifying operates to change a first set of predetermined operational limits;
specifying one or more second tuning priorities wherein the specifying comprises selecting or de-selecting the one or more second tuning priorities and wherein the specifying of the one or more second tuning priorities operates to overlay a second set of predetermined operational limits upon the first set of predetermined operational limits;
sensing the operational parameters of the gas turbine;
determining whether the operational parameters are within the first or second set of predetermined operational limits; and
adjusting the blend of the first fuel source and the second fuel source, based on whether the operational parameters are within the second set of predetermined operational limits,wherein the first set of predetermined operational limits are determined according to the first tuning priorities for the turbine, wherein the first tuning priorities comprise one or more selected from the group comprising NOx levels, power level and combustion dynamics and wherein the second tuning priorities comprise fuel blend ratio, andwherein specifying the power level and the fuel blend tuning priority comprises switching on or switching off said tuning priority, and wherein specifying the NOx levels tuning priority or the combustion dynamics tuning priority comprises selecting a value in a range.
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Abstract
Provided herein is a method for automated control of the gas turbine fuel composition through automated modification of the ratio of fuel gas from multiple sources. The method includes providing first and second fuel sources. The method further includes sensing the operational parameters of a turbine and determining whether the operational parameters are within preset operational limits. The method also adjusting the ration of the first fuel source to the second fuel source, based on whether the operational parameters are within the preset operational limits.
644 Citations
36 Claims
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1. A method for automated control of a combustion turbine fuel composition through automated modification of a ratio of fuel gas, comprising:
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providing a first fuel source; providing a second fuel source; supplying fuel to a combustion turbine in a blend of fuel from the first source and second source; specifying one or more first tuning priorities, wherein the specifying comprises selecting or de-selecting the one or more first tuning priorities or selecting a value in a range for the one or more first tuning priorities and wherein the specifying operates to change a first set of predetermined operational limits; specifying one or more second tuning priorities wherein the specifying comprises selecting or de-selecting the one or more second tuning priorities and wherein the specifying of the one or more second tuning priorities operates to overlay a second set of predetermined operational limits upon the first set of predetermined operational limits; sensing the operational parameters of the gas turbine; determining whether the operational parameters are within the first or second set of predetermined operational limits; and adjusting the blend of the first fuel source and the second fuel source, based on whether the operational parameters are within the second set of predetermined operational limits, wherein the first set of predetermined operational limits are determined according to the first tuning priorities for the turbine, wherein the first tuning priorities comprise one or more selected from the group comprising NOx levels, power level and combustion dynamics and wherein the second tuning priorities comprise fuel blend ratio, and wherein specifying the power level and the fuel blend tuning priority comprises switching on or switching off said tuning priority, and wherein specifying the NOx levels tuning priority or the combustion dynamics tuning priority comprises selecting a value in a range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A tuning system for automated control of a gas turbine fuel composition through automated modification of a ratio of fuel gas, comprising:
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operational turbine controls for operational control elements of the turbine, the turbine controls controlling at least one of turbine fuel distribution or the fuel temperature, a tuning controller communicating with the controls, the controller configured to tune the operation of the turbine in accordance with the following; specifying one or more first tuning priorities, wherein the specifying comprises selecting or de-selecting the one or more first tuning priorities or selecting a value in a range for the one or more first tuning priorities and wherein the specifying operates to change a first set of predetermined operational limits; specifying one or more second tuning priorities wherein the specifying comprises selecting or de-selecting the one or more second tuning priorities and wherein the specifying of the one or more second tuning priorities operates to overlay a second set of predetermined operational limits upon the first set of predetermined operational limits; receiving operational data about the turbine, providing a hierarchy of the first tuning priorities, determining whether sensed operational data is within the first or second set of predetermined operational limits and producing one or more indicators if said operational data is not within the first or second set of predetermined operational limits, ranking the one or more indicators to determine dominant tuning concern, and providing a blend of fuel to a level blend ratio controller, the blend having fuel from at least one of a first and second fuel source ratio controller, the fuel blend ratio controller adjusting the ratio of the first fuel source and the second fuel source according to the blend based on whether the operational parameters are within the second set of predetermined operational limits, wherein the first tuning priorities for the turbine comprise one or more selected from the group comprising NOx levels, power level, and combustion dynamics and the second tuning priorities comprise fuel blend ratio, and wherein the specifying of the power level and fuel blend tuning priority comprises switching on or switching off the tuning priority, and wherein the specifying of NOx levels or combustion dynamics tuning priority comprises selecting a value in a range. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification