Gas turbine power plant control apparatus including an ambient temperature responsive control system
AssigneeWestinghouse Electric Corp.
InventorsRobert A. Yannone, James J. Shields
Life of this patent
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Abstract
A gas turbine power plant is provided with an industrial gas turbine which drives a generator coupled to a power system through a braker. The turbine-generator plant is operated by a hybrid control system having digital function capability during sequenced startup, synchronizing, load buildup and steady state load, and shutdown operations. The control system also contains monitoring and protective subsystems which function through all stages of operation, with redundancy and permissive features which maximize turbine availability.
Claims12
A gas turbine electric power plant comprising:
- a. a gas turbine having a compressor, and combustion and turbine elements;
- b. a fuel system for supplying fuel to said gas turbine combustion element;
- c. means for operating said fuel system under control, to provide a controlled flow of fuel to said combustion element;
- d. means for generating an actual ambient temperature signal, a blade plate temperature signal and a combustor shell pressure signal, a control system having a plurality of control paths each of which produces a respective control path signal, said plurality including a backup blade path temperature control independent of any surge limit control included in said control system and having means for generating a limit signal as a function of both of said temperature signal generating means and said pressure signal generating means, said control system having means for continuously selecting one of the signals produced by said control paths on a predetermined basis;
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- e. means for operatively connecting said selected signal to said operating means.
A gas turbine electric power plant comprising:
- a. a gas turbine having a compressor, and combustion and turbine elements;
- b. a fuel system for supplying fuel to said gas turbine combustion element;
- c. means for operating said fuel system under control, to provide a controlled flow of fuel to said combustion element;
- d. a control system for generating a control signal for controlling said fuel system operating means, said control system including temperature limit control means for controlling the relationship of the discharge pressure of said compressor element and the temperature of a predetermined portion of said turbine element independent of any surge limit control included in said control system, and means for varying said relationship as a function of power plant ambient temperature.
Dependencies are inferred from the claim text.