Gas turbine control apparatus and gas turbine system using the same
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsMasumi Nomura, Kozo Toyama
Life of this patent
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Abstract
In a gas turbine control apparatus, a frequency analyzing section frequency-analyzes at least one of pressure oscillation in combustors of a gas turbine and acceleration oscillation of each of the combustors and outputs a first frequency analysis result as the result of frequency analysis for a plurality of predetermined frequency bands. A control unit controls at least one of a first fuel flow rate of fuel and a first air flow rate of air based on the first frequency analysis result for the plurality of frequency bands. The fuel and the air are supplied to the gas turbine.
Claims16
A gas turbine control method, comprising:
- receiving a measurement data of at least one of a pressure or acceleration oscillations in at least one combustor of a gas turbine;
- frequency analyzing said measurement data to produce a frequency analysis result;
- dividing said frequency analysis result into a plurality of frequency bands;
- determining a correction data to at least one of a first flow rate of fuel or a first flow rate of air to be supplied to said gas turbine based on said frequency analysis result and threshold values for said plurality of frequency bands;
- and
- controlling said gas turbine based on process data indicating an operation state of said gas turbine and said correction data.
A gas turbine control method, comprising:
- receiving a measurement data of acceleration oscillations in at least one combustor of a gas turbine;
- frequency analyzing said measurement data to produce a frequency analysis result;
- dividing said frequency analysis result into a plurality of frequency bands;
- determining a correction data to at least a flow rate of air to be supplied to said gas turbine based on said frequency analysis result and threshold values for said plurality of frequency bands;
- and
- controlling said gas turbine based on process data indicating an operation state of said gas turbine and said correction data.
A storage medium for storing a computer readable program for controlling a gas turbine, which when executed by a computer causes the computer to perform:
- instructions for receiving a measurement data of at least one of a pressure or acceleration oscillations in at least one combustor of a gas turbine;
- instructions for frequency analyzing said measurement data to produce a frequency analysis result;
- instructions for dividing said frequency analysis result into a plurality of frequency bands;
- instructions for determining a correction data to at least one of a first flow rate of fuel or a first flow rate of air to be supplied to said gas turbine based on said frequency analysis result and threshold values for said plurality of frequency bands;
- and
- instructions for controlling said gas turbine based on process data indicating an operation state of said gas turbine and said correction data.
A storage medium for storing a computer readable program for controlling a gas turbine, which when executed by a computer causes the computer to perform:
- instructions for receiving a measurement data of acceleration oscillations in at least one combustor of a gas turbine;
- instructions for frequency analyzing said measurement data to produce a frequency analysis result;
- instructions for dividing said frequency analysis result into a plurality of frequency bands;
- instructions for determining a correction data to at least a flow rate of air to be supplied to said gas turbine based on said frequency analysis result and threshold values for said plurality of frequency bands;
- and
- instructions for controlling said gas turbine based on process data indicating an operation state of said gas turbine and said correction data.
Dependencies are inferred from the claim text.