Gas turbine control apparatus, gas turbine system and gas turbine control method
First Claim
1. A gas turbine control apparatus comprising:
- a frequency analyzing portion carrying out a frequency analysis of fluctuation of pressure or acceleration in a combustor of a gas turbine and putting out an analysis result divided into frequency bands in which the result of said frequency analysis is divided into a plurality of frequency bands, a priority order information containing portion containing information on a priority order set for said plurality of frequency bands, a combustion characteristic grasping portion grasping a characteristic of combustion fluctuation of said gas turbine, based on said analysis result divided into frequency bands and process data of said gas turbine, and a control portion adjusting at least one of a flow rate of fuel and a flow rate of air to be supplied into said combustor so that the combustion fluctuation of a frequency band of a high priority order is suppressed, based on the information on said priority order contained in said priority order information containing portion, when said combustion characteristic grasping portion grasps that the combustion fluctuation arises in a plurality of frequency bands.
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Accused Products
Abstract
A gas turbine control apparatus, etc. are provided by which combustion fluctuation, even if arising in plural frequency bands, can be effectively suppressed. If the combustion fluctuation arises in plural frequency bands, corresponding to a predetermined priority order, adjustment is done so that the combustion fluctuation of the frequency band of a high priority order is suppressed. If the gas turbine state changes after the adjustment, this is reflected on a data base 30. If no sufficient data is stored yet in the data base 30 for any the reason, such as immediately after installation of the gas turbine, correction is made using data of countermeasures based on data of another same type gas turbine contained in a basic data base 31 and data of countermeasures based on experiences of skilled adjusting operators contained in a knowledge data base 32. Also, in a stabilized operation, operation condition may be varied so that an optimal operation condition is automatically searched.
59 Citations
18 Claims
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1. A gas turbine control apparatus comprising:
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a frequency analyzing portion carrying out a frequency analysis of fluctuation of pressure or acceleration in a combustor of a gas turbine and putting out an analysis result divided into frequency bands in which the result of said frequency analysis is divided into a plurality of frequency bands, a priority order information containing portion containing information on a priority order set for said plurality of frequency bands, a combustion characteristic grasping portion grasping a characteristic of combustion fluctuation of said gas turbine, based on said analysis result divided into frequency bands and process data of said gas turbine, and a control portion adjusting at least one of a flow rate of fuel and a flow rate of air to be supplied into said combustor so that the combustion fluctuation of a frequency band of a high priority order is suppressed, based on the information on said priority order contained in said priority order information containing portion, when said combustion characteristic grasping portion grasps that the combustion fluctuation arises in a plurality of frequency bands. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A gas turbine system comprising:
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a gas turbine containing a combustor, a frequency analyzing portion carrying out a frequency analysis of fluctuation of pressure or acceleration in said combustor and putting out an analysis result divided into frequency bands in which the result of said frequency analysis is divided into a plurality of frequency bands, a priority order information containing portion containing information on a priority order set for said plurality of frequency bands, a combustion characteristic grasping portion grasping a characteristic of combustion fluctuation of said gas turbine, based on said analysis result divided into frequency bands and process data of said gas turbine, and a control portion adjusting at least one of a flow rate of fuel and a flow rate of air to be supplied into said combustor so that the combustion fluctuation of a frequency band of a high priority order is suppressed, based on the information on said priority order contained in said priority order information containing portion, when said combustion characteristic grasping portion grasps that the combustion fluctuation arises in a plurality of frequency bands.
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8. A gas turbine control method comprising:
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a step of carrying out a frequency analysis of fluctuation of pressure or acceleration in a combustor of a gas turbine and putting out an analysis result divided into frequency bands in which the result of said frequency analysis is divided into a plurality of frequency bands, a step of grasping a characteristic of combustion fluctuation of said gas turbine, based on said analysis result divided into frequency bands and process data of said gas turbine, and a step of adjusting at least one of a flow rate of fuel and a flow rate of air to be supplied into said combustor so that the combustion fluctuation of a frequency band of a high priority order is suppressed, based on a predetermined priority order, when the combustion fluctuation arises in a plurality of frequency bands.
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9. A gas turbine control apparatus comprising:
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a frequency analyzing portion carrying out a frequency analysis of fluctuation of pressure or acceleration in a combustor of a gas turbine and putting out an analysis result divided into frequency bands in which the result of said frequency analysis is divided into a plurality of frequency bands, a combustion characteristic grasping portion grasping a characteristic of combustion fluctuation of said gas turbine, based on said analysis result divided into frequency bands and process data of said gas turbine, a control portion adjusting at least one of a flow rate of fuel and a flow rate of air to be supplied into said combustor so that the combustion fluctuation is suppressed, when said combustion characteristic grasping portion grasps that the combustion fluctuation arises, and a search and control portion searching an optimal operation condition by varying at least one of the flow rate of fuel and the flow rate of air to be supplied into said combustor in the state that said control portion is not carrying out an adjustment to suppress the combustion fluctuation and, corresponding to said optimal operation condition obtained, adjusting at least one of the flow rate of fuel and the flow rate of air to be supplied into said combustor. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A gas turbine system comprising:
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a gas turbine containing a combustor and a search and control portion searching an optimal operation condition by varying at least one of a flow rate of fuel and a flow rate of air to be supplied into said combustor in the state that there is no combustion fluctuation in said gas turbine and, corresponding to said optimal operation condition obtained, adjusting at least one of the flow rate of fuel and the flow rate of air to be supplied into said combustor. - View Dependent Claims (17)
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18. A gas turbine control method comprising:
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a result putting out step carrying out a frequency analysis of fluctuation of pressure or acceleration in a combustor of a gas turbine and putting out an analysis result thereof, a characteristic grasping step grasping a characteristic of combustion fluctuation of said gas turbine, based on said analysis result and process data of said gas turbine, a fluctuation suppressing step adjusting at least one of a flow rate of fuel and a flow rate of air to be supplied into said combustor so that the combustion fluctuation is suppressed, if the combustion fluctuation arises as the result of said characteristic grasping step grasping the characteristic of the combustion fluctuation of said gas turbine, and a condition searching step searching an optimal operation condition by varying at least one of the flow rate of fuel and the flow rate of air to be supplied into said combustor in the state that said fluctuation suppressing step is not being carried out and, corresponding to said optimal operation condition obtained, adjusting at least one of the flow rate of fuel and the flow rate of air to be supplied into said combustor.
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Specification