Method of operating a combined-cycle plant

Details Method of operating a combined-cycle plant Method of operating a combined-cycle plant

1997-03-31

1999-03-23

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60 39182, F02C 330, F02C 618

Patent

active

058844708

ABSTRACT:
In a method of operating a combined-cycle plant, which essentially comprises a gas-turbine group, a waste-heat steam generator (14) and a steam cycle equipped with a steam turbine (17), the gas-turbine group being operated according to sequential combustion (4, 9), at least one steam quantity (50) proportioned by a control (C) is extracted at a suitable point in terms of pressure in order to increase the operational output of the steam turbine (17). This steam quantity (50) is then fed to the gas-turbine group at a suitable point in such a way that, to maintain the output thus induced, at least the metering (D, E) of a fuel quantity (5, 10) at at least one combustion chamber (4, 9) is influenced.

REFERENCES:
patent: 4519207 (1985-05-01), Okabe et al.
patent: 4928478 (1990-05-01), Maslak
patent: 5564269 (1996-10-01), Briesch
patent: 5727377 (1998-03-01), Fetescu et al.
patent: 5761896 (1998-06-01), Dowdy et al.

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