Gas turbine and operation method of gas turbine combined electric generating plant, gas turbine combined electric generating plant, and computer product
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsYoshinori Hyakutake, Yasuhiro Fujita
Life of this patent
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Abstract
A casing air temperature Ta and a steam temperature Ts are measured, and if an absolute value ΔT of a difference between these two temperatures is within a predetermined temperature, the gas turbine is connected to the generator. After the connection is done, the load is gradually increased, and the coolant changeover signal is sent from a processor to a controller. The coolant is then changed to the steam, thereby completing the connection of the gas turbine with the generator and the changeover of the coolant.
Claims2
An operation method of a gas turbine for changing a coolant for cooling hot members in the gas turbine from casing air to steam, comprising:
- measuring temperatures of the casing air and the steam and comparing the temperatures;
- adjusting at least one of temperatures of the casing air and the steam to equalize the temperature of the casing air and the temperature of the steam;
- and
- changing the coolant for the hot members from the casing air to the steam during a connection period of the gas turbine with a generator after having equalized the temperature of the casing air and the temperature of the steam.
A computer readable medium embodying a computer program for instructing the computer to carry out an operation method of a gas turbine for changing a coolant for cooling hot members in the gas turbine from casing air to steam, the method comprising:
- measuring temperatures of the casing air and the steam and comparing the temperatures;
- adjusting at least one of temperatures of the casing air and the steam to equalize the temperature of the casing air and the temperature of the steam;
- and
- changing the coolant for the hot members from the casing air to the steam during a connection period of the gas turbine with a generator after having equalized the temperature of the casing air and the temperature of the steam.
Dependencies are inferred from the claim text.