Integrated gasification combined cycle and operation control method thereof
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsSatoru Kamohara, Takashi Sonoda, Yasuhiro Takashima, Yuichiro Kitagawa
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Abstract
An integrated gasification combined cycle that can adjust the balance of pressure/temperature in an overall plant and can stabilize the output of a gas turbine at an early stage during load variation, and an operation control method of the integrated gasification combined cycle are provided. When a calorific abnormality of fuel gas is detected during load variation of a gas turbine (5b), a load change command value of the gas turbine (5b) is set to zero or is decreased, and based on this load change command value, a power generation output command of the gas turbine (5b) is generated.
Claims9
An operation control method of an integrated gasification combined cycle, comprising:
- providing a power generator command from a shaft load setting device;
- detecting a fuel gas calorific value, wherein when a calorific abnormality of the fuel gas is detected during load variation of a gas turbine, setting a load change command value of the gas turbine to zero or decreasing to a value greater than zero, and
- outputting a power generation output command of the gas turbine according to the load change command value and the power generator command.
An operation control method of an integrated gasification combined cycle, comprising:
- a first step of generating a power generation output command of a gas turbine using a value obtained by subtracting a power generation output of a steam turbine from a power generator output command that is generated from a shaft load setting device,
- wherein a gasification furnace is controlled using the power generation output command of the gas turbine obtained in the first step.
An integrated gasification combined cycle comprising
- a gas turbine control apparatus having a shaft load setting device that provides a power generator output command,
- a rate setting unit that receives a calorific value signal of fuel gas, wherein, when a calorific abnormality of the fuel gas is detected during load variation of a gas turbine, a load change command value of the gas turbine is set to zero or is decreased to a value greater than zero, and,
- a rate limiting unit that generates a power generation output command of the gas turbine based on an output from the rate setting unit and the power generator output command.
An integrated gasification combined cycle, comprising:
- a gas turbine control apparatus having a shaft load setting device that provides a power generator output command,
- a rate limiting unit for generating a power generation output command of a gas turbine using a value obtained by subtracting a power generation output of a steam turbine from the power generator output command, and a gasification furnace control apparatus for controlling a gasification furnace using the power generation output command of the gas turbine.
Dependencies are inferred from the claim text.