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US 6,474,069 B1Granted
Gas turbine having combined cycle power augmentation
AssigneeGeneral Electric Company
InventorRaub Warfield Smith
Life of this patent
Estimating the term…
Abstract
A system is described for allowing short term power augmentation of a gas turbine or a gas turbine combined cycle power plant. A reservoir of pressurized and/or liquefied gas is installed to store a transient supply of gas turbine working fluid. This supply of working fluid is available for near instantaneous admission to the gas turbine at the compressor discharge or combustion system to boost output, as may be desirable to assist in supporting electrical grid frequency during a transient disturbance (frequency reduction).
Claims21
A gas turbine apparatus comprising:
- a gas turbine system including a compressor, a combustion system, and a gas turbine;
- and
- means for generating a transient plant power boost that can be selectively supported via injection of a first gas in gaseous form, comprising:
- a working fluid source, said working fluid source comprising at least one of a compressed gas storage vessel and a liquefied gas storage vessel, each said vessel containing and storing substantially solely said first gas, said vessel being operatively coupled via a working fluid flow control valve to a fluid flow path extending between said compressor and said gas turbine for selectively directly adding said first gas in gaseous form to fluid flowing through said fluid flow path at a point downstream of said compressor and upstream of said gas turbine.
1 more element
A gas turbine combined cycle system comprising:
- a gas turbine system, said gas turbine system including a compressor, a combustion system and a gas turbine;
- a steam turbine system;
- a heat recovery steam generator for receiving exhaust gas from the gas turbine for heating steam from the steam turbine, said gas turbine exhaust gas flowing along a exhaust gas flow path from an entry end to an exit end of the heat recovery steam generator;
- and
- further comprising means for generating a transient plant power boost that can be selectively supported by injection of a first gas in gaseous form, including;, a working fluid source, said working fluid source comprising at least one of a compressed gas storage vessel and a liquefied gas storage vessel, each said vessel containing and storing substantially solely said first gas, said vessel being operatively coupled via a working fluid flow control valve to a fluid flow path extending between said compressor and said gas turbine for selectively directly adding said first gas in gaseous form to fluid flowing through said fluid flow path at a point downstream of said compressor and upstream of said gas turbine.
2 more elements
Dependencies are inferred from the claim text.