Combined cycle electric power plant and a gas turbine having an

Details Combined cycle electric power plant and a gas turbine having an Combined cycle electric power plant and a gas turbine having an

1974-08-08

1979-09-11

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Combined with regulation of power output feature

F02C 904

Patent

active

041670965

ABSTRACT:
A combined cycle electric power plant includes gas and steam turbines and steam generators and a digital/analog control system. In the automatic and manual modes of operation, the control system develops a fuel reference signal for the throttle valve position control by means of a speed/load control which functions on a feedforward speed control basis without speed feedback correction. An electrical overspeed protection control is directly coupled to the throttle valve position control to limit turbine speed to a first reference value when the breaker is closed and to limit turbine speed to a lower reference value when the breaker is open. Electrical and mechanical overspeed protection systems directly trip the turbine at higher speed references.

REFERENCES:
patent: 3243596 (1966-03-01), Loft
patent: 3255586 (1966-06-01), Hennig
patent: 3421317 (1969-01-01), Bedford
patent: 3469395 (1969-09-01), Spitsbergen
patent: 3686860 (1972-08-01), White

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