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7615881 |
Power turbine speed control using electrical load following
A power turbine speed control system for a turbo-shaft type gas turbine engine that has a gas generator compressor spool and a power turbine spool and drives an electrical generator that powers at...
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7614238 |
Method for lean blowout protection in turbine engines
A lean blowout protection system and method is provided that facilitates improved lean blowout protection while providing effective control of turbine engine speed. The lean blowout protection...
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7610760 |
Two-displacement setting variable displacement pump used as engine over-thrust protection with fuel system thermal benefit
A fuel delivery system ( 10 ) comprises a variable displacement pump ( 20 ) for pressurizing fuel. The variable displacement pump has a distinct first pump displacement setting for a first desired...
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7587900 |
Gas turbine engine fuel control system having a transfer valve and a shutoff valve and a common controller therefor
A fuel control system for a gas turbine engine includes a metering valve for metering a flow of fuel, a throttling valve for maintaining a pressure drop across the metering valve, the throttling...
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7584616 |
Method for the operation of a gas turbo group
A method for operating a gas turbine set comprises the compression of an air mass flow in a compressor, feeding the compressed air mass flow into a first combustion chamber, burning the first mass...
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7549293 |
Pressure control method to reduce gas turbine fuel supply pressure requirements
A system and method to reduce the gas fuel supply pressure requirements of a gas turbine, which results in an increased operability range and a reduction in gas turbine trips. According to the...
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7549292 |
Method of controlling bypass air split to gas turbine combustor
Disclosed herein is a method for controlling a bypass air split for a gas turbine combustor, the method comprising determining a target exhaust temperature, wherein the target exhaust temperature...
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7530232 |
Method for regulating the flow rate of fuel to a turboshaft engine in acceleration or in deceleration
Apparatus for regulating the flow rate of fuel to a turboshaft engine in acceleration or deceleration, the engine having a free turbine and a core engine, the apparatus including sensors...
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7457688 |
Method and system for detection and transfer to electrical island operation
A method for transient fuel control for fuel delivery circuits for a plurality of connected gas turbines, the method includes: detecting a transient grid event based on an indication of at least...
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7451601 |
Method of tuning individual combustion chambers in a turbine based on a combustion chamber stratification index
A method, system and software for reducing combustion chamber to chamber variation in a multiple-combustion chamber turbine system comprising sensing dynamic combustion pressure tones emitted from...
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7430868 |
Method of operating a thermal power plant
A method of operating a thermal power plant, such as a gas turbine power plant, in which a rotary unit, such as at least one gas turbine stage, is driven by burning gaseous fuel inside a combustion...
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7424360 |
Overspeed control system for gas turbine electric powerplant
A turbine overspeed control system for use with a gas turbine engine of a gas turbine electrical powerplant. The overspeed control system preferably comprises a first and second overspeed control...
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7404294 |
Gas turbine and a method for controlling a gas turbine
Method and arrangement for providing and controlling a gas turbine ( 1 ) at least one turbine ( 11, 20, 20 ′), at least one compressor ( 2, 5 ) driven by the turbine and a combustion chamber ( 16...
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7383167 |
Methods and systems for modeling power plants
A modular method of modeling a power plant includes selecting a major component module model from a library of component module models for each major component of the power plant, with each major...
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7367193 |
Auxiliary power unit control method and system
An adjustment method and system for an auxiliary power unit (APU) allows the APU speed to vary based on the inlet air temperature to the APU compressor. The APU is controlled by a control law that...
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7340901 |
Control logic for fuel controls on APUs
Conventional auxiliary power units (APUs) may experience over-temperature shutdowns when attempting to start them at high altitudes. Further, such conventional APUs may also experience overspeed...
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7337057 |
Methods and apparatus for predicting and/or for avoiding lean blow-outs
A method for predicting lean blow-outs (LBOs) in a gas turbine engine includes extracting a plurality of tones in pressure signals representative of pressure within monitored combustor cans,...
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7333861 |
Method and system for calculating marginal cost curves using plant control models
A method and system are provided for calculating a marginal cost curve for a plant at a plant load range comprising a plurality of specified plant loads. The method includes providing a model used...
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7310950 |
Inlet airflow cooling control for a power generating system
A power generating system ( 20 ) includes a generator ( 22 ) and a combustion turbine ( 24 ) for driving the generator ( 22 ). The combustion turbine ( 24 ) may have a combustion turbine air inlet...
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7278266 |
Methods and apparatus for gas turbine engine lean blowout avoidance
A method of monitoring and controlling the combustion dynamics of a gas turbine engine system is provided. The system includes at least one gas turbine that includes at least one combustor can. The...
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7269953 |
Method of controlling a power generation system
A method of controlling a gas turbine system ( 10 ) may include controlling an inlet guide vane position ( 98 ) to maintain a turbine ( 24 ) exhaust temperature at a corrected value that is a...
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7260937 |
Method and apparatus for actuating fuel trim valves in a gas turbine
The gas turbines of the present invention have multiple combustion chambers, and within each chamber are multiple fuel nozzles. Each nozzle has its own fuel control valve to control the fuel...
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7245040 |
System and method for controlling the frequency output of dual-spool turbogenerators under varying load
Methods for maintaining a constant electrical output frequency in a turbogenerator with increased electrical loads are provided. The methods comprise biasing adjustable guide vanes of a compressor...
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7234305 |
Gas turbine control apparatus and gas turbine system using the same
In a gas turbine control apparatus, a frequency analyzing section frequency-analyzes at least one of pressure oscillation in combustors of a gas turbine and acceleration oscillation of each of the...
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7216487 |
Metering demand fuel system for gas turbine engines
A fuel system includes a turbine engine, and an electric motor that are independently drivable relative to one another. The electric motor has a speed that is selectively controlled based upon a...
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7216486 |
Method for operating a turbine group
Relevant fuel-gas properties (X G ) are measured on an ongoing basis while a gas turbine group is operating. The C 2+ alkane content of the fuel gas is of particular interest in this context, since...
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7197879 |
Multiple electric fuel metering systems for gas turbine applications
The present invention provides a multiple manifold fuel metering system with a separate motor, pump, and shut-off/purge valve for each manifold. The present invention may be used for metering fuel...
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7197878 |
Pump control system
A pump control system ( 20 ) for a pump ( 21 ) in a gas turbine engine ( 10 ) is described. The pump control system ( 20 ) comprises demand means ( 22 ) for providing a demand signal ( 23 )...
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7194864 |
Approach to extending life of gas turbine engine
Methods of increasing lifetimes of components in a gas turbine engine. Ordinarily, components are replaced after they experience a certain number of thermal cycles, or a certain operating...
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7194863 |
Turbine speed control system and method
One embodiment of the invention provides a turbine control system that adjusts the control thresholds of two-position valves, which provide propellant to the turbine, based on turbine load so as to...
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7162875 |
Method and system for controlling fuel supply in a combustion turbine engine
In order to regulate fuel flow to the combustor ( 36 ) of the combustion turbine engine ( 10 ) having a primary combustion zone ( 64 ) and at least one further combustion zone, the temperature of...
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7162874 |
Apparatus and method for gas turbine engine fuel/air premixer exit velocity control
A gas turbine engine with a single stage combustor includes an external premixer to provide premixed fuel/compressed air to the combustor as well as compressed air for dilution; and an automatic...
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7137256 |
Method of operating a combustion system for increased turndown capability
A method of operating a gas turbine engine combustion system at lower load conditions while maintaining required emissions levels is disclosed. The present invention includes multiple embodiments...
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7127898 |
Method and system for incorporating an emission sensor into a gas turbine controller
A method for determining an estimated operating parameter for a gas turbine including the steps of: determining an estimated operating parameter using an algorithm have an input from a sensor,...
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7107773 |
Turbine engine sequenced combustion
Aspects of the invention relate to a method for facilitating the reduction of carbon monoxide emissions during part load operation of a turbine engine by holding high combustor temperatures. The...
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7095000 |
Radio-frequency driven dielectric heaters for non-nuclear testing in nuclear core development
Apparatus and methods are provided through which a radio-frequency dielectric heater has a cylindrical form factor, a variable thermal energy deposition through variations in geometry and...
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7093443 |
Gas turbine apparatus
A gas turbine apparatus has a combustor 2 for combusting fuel to produce a combustion gas, a turbine 1 which is rotated by the combustion gas, an electric generator 5 coupled to the turbine ...
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7082767 |
Process and device for supplying the turbojets of an aircraft during automatic flight
According to the invention, during level automatic flight of the aircraft (A) at steady altitude, the preset value EPRt, common to all the turbojets (M 1 to M 4 ) and corresponding to a particular...
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7051533 |
Method and system for controlling gas turbine engine
In a control method of a gas turbine engine, an engine controller 4 outputs a combustor power command FD based on an engine condition from an engine condition detector 3 . Then, a combustion...
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7047747 |
Method of and device for controlling fuel for gas turbine
Values such as a pressure for supplying fuel gas to a gas turbine, a pressure in a combustor casing of the gas turbine, an output of a generator connected to the gas turbine, and a controlled...
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7036317 |
Dual fuel type combined turbine plant and method for operating the same
A turbine plant includes a steam turbine, a gas turbine connected to the steam turbine, a generator, and an analyzing apparatus. The steam turbine includes a high pressure steam turbine, an...
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7024862 |
System and method for controlling combustion in gas turbine with annular combustor
A gas turbine system composed of a gas turbine engine and a controller. The gas turbine engine includes an annular combustor, and a turbine driven by combustion gas from the annular combustor to...
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7021062 |
Fuel control method and apparatus for combined plant
In a fuel control method for a combined plant, when the combined plant is just started or during a rated operation, a clutch is completely disengaged or engaged, and therefore, fuel is controlled...
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7013632 |
Single shaft combined cycle power plant and its operation method
According to the invention, there is provided a single shaft combined cycle power plant which can quickly switch from single operation of a gas turbine to combined operation of the gas turbine and...
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7007485 |
Controlling the fuel supply to a combustor of a gas turbine engine
The minimum fuel flow to a combustor of a gas turbine engine is controlled in response to the combustor inlet temperature T 3 in order to provide a FAR stability margin which responds to the...
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7000401 |
Method for operating a steam power plant and steam power plant for carrying out said method
The invention relates to a method for operating a steam power plant comprising a steam generator and a combustion chamber associated therewith, wherein pre-warmed combustion air is guided therein...
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6986254 |
Method of operating a flamesheet combustor
A method of operating a gas turbine combustion system having reduced emissions and improved flame stability at multiple load conditions is disclosed. The improved combustion system accomplishes...
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6973791 |
Method and apparatus for reduction of combustor dynamic pressure during operation of gas turbine engines
Methods and apparatus for operating a gas turbine engine without sustained detrimental levels of dynamic pressure are provided. The engine includes a combustor. The method includes determining the...
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6945053 |
Lean premix burner for a gas turbine and operating method for a lean premix burner
A lean premix burner for a gas turbine having at least one fuel supply ring 4 fitted with primary fuel nozzles 8 and additional secondary fuel nozzles 9 , and a method of operation for this...
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6931857 |
Rotor inlet temperature control for turbo machine
A method of synthesizing rotor inlet temperature in a turbine comprising the steps of determining a burner fuel flow (WFGG), a burner inlet pressure (PS32), and a compressor discharge temperature...
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