General Electric Company

Exxonmobil Upstream Research Company

Other

General Electric Renovables Espana, S.l.

Samuel David Draper

Lisa Anne Wichmann

Daniel David Snook

James Anthony West

Noémie Dion Ouellet

Richard Alan Huntington

Franklin F Mittricker

Loren K Starcher

Sulabh K Dhanuka

Christian Michael Hansen

Dennis M O'Dea

Todd Franklin Denman

Scott Allen Rittenhouse

Chandrashekhar Ganpatrao Sonwane

Dale Robert Mashtare

Gilbert Otto Kraemer

Andrei Tristan Evulet

David M Polizzotti

John Wesley Grant

Hasan Ul Karim

Richard Aumann

Scott Mordin Hoyte

Matthew Alexander Lehar

Gabor Ast

Thomas Stephen Markham

Amit Toprani

Conner Brooks Shane

Eric Gebhardt

Matthias Finkenrath

Alan Meier Truesdale

Stephanie Marie-Noelle Hoffmann

Noemie Dion Ouellet

Kenneth William Kohl

Katherine Derksen Stinson

Christopher Mordaunt

Erin K Bauknight

Carlos Alberto Concha

John Farrior Woodall

Dennis M O'DEA

Noemie Dion Ouellett

Thomas Frey

A method for reducing loads of a wind turbine when a rotor blade of the wind turbine is stuck. The method includes continuously monitoring, via a controller, a loading effect of the stuck rotor blade of the wind turbine. The method also includes providing, via the controller, a predetermined schedule that relates the monitored loading effect of the stuck rotor blade of the wind turbine with a yaw angle for a nacelle of the wind turbine. In addition, the method includes yawing, via the controller, the nacelle of the wind turbine away from an incoming wind direction according to the predetermined schedule.

System and method for reducing loads of a wind turbine when a rotor blade becomes stuck

A system includes a gas turbine system having a turbine combustor, a turbine driven by combustion products from the turbine combustor, and an exhaust gas compressor driven by the turbine. The exhaust gas compressor is configured to compress and supply an exhaust gas to the turbine combustor. The gas turbine system also has an exhaust gas recirculation (EGR) system. The EGR system is configured to recirculate the exhaust gas along an exhaust recirculation path from the turbine to the exhaust gas compressor. The system further includes a main oxidant compression system having one or more oxidant compressors. The one or more oxidant compressors are separate from the exhaust gas compressor, and the one or more oxidant compressors are configured to supply all compressed oxidant utilized by the turbine combustor in generating the combustion products.

System and method for oxidant compression in a stoichiometric exhaust gas recirculation gas turbine system

The present subject matter is directed to a system and method for sequencing Light Detecting and Ranging (LIDAR) sensor beam signals from a LIDAR sensor mounted on a nacelle of a wind turbine with the rotor position of the wind turbine so as to improve signal availability. More specifically, the method includes generating, via the LIDAR sensor, one or more laser signals towards the rotor of the wind turbine, the rotor having one or more rotor blades. The method also includes receiving, via a controller, a rotor position of the rotor of the wind turbine. Thus, the method further includes coordinating, via a control algorithm programmed within the controller, the rotor position with the one or more laser signals of the laser sensor so as to minimize interference between the laser signal(s) and the rotor blades during rotation of the rotor.

System and method for improving LIDAR sensor signal availability on a wind turbine

The present disclosure is directed to systems and methods for de-icing a rotor blade of a wind turbine. The wind turbine has a nacelle mounted atop a tower. The nacelle has a rotor with a rotatable hub having rotor blade mounted thereto. The method includes shutting down the wind turbine in response to detecting ice on the rotor blade. The method also includes positioning the wind turbine in a de-icing position, the de-icing position including at least one of yawing the nacelle of the wind turbine such that the rotor is in a down-wind location of the tower or pitching the rotor blade such that a leading edge of the rotor blade is facing the tower. Another step includes de-icing the rotor blade while the rotor is in the de-icing position.

System and method for de-icing a wind turbine rotor blade

A method for controlling a wind turbine may generally include operating the wind turbine at an initial power output that is greater than a rated power output associated with the wind turbine. The wind turbine may have an anticipated operational life at the rated power output. In addition, the method may include decreasing a power output of the wind turbine over time in order to maintain an actual operating life of the wind turbine substantially equal to or greater than the anticipated operational life. A final power output of the wind turbine at an end of the anticipated operating life may be less than the rated power output.

System and method for controlling a wind turbine

A system includes a turbine having an exhaust flow path through a plurality of turbine stages, wherein the plurality of turbine stages is driven by combustion products flowing through the exhaust flow path, at least one main combustor disposed upstream from the turbine, wherein the at least one main combustor is configured to combust a fuel with a first oxidant and an exhaust gas to generate the combustion products, at least one reheat combustor disposed in or between turbine stages of the turbine, wherein the at least one reheat combustor is configured to reheat the combustion products by adding a second oxidant to react with unburnt fuel in the combustion products, and an exhaust gas compressor, wherein the exhaust gas compressor is configured to compress and route the exhaust gas from the turbine to the at least one main combustor along an exhaust recirculation path.

System and method for reheat in gas turbine with exhaust gas recirculation

Ambient air is compressed into a compressed ambient gas flow with a main air compressor. The compressed ambient gas flow having a compressed ambient gas flow rate is delivered to a turbine combustor and mixed with a fuel stream having a fuel stream flow rate and a portion of a recirculated low oxygen content gas flow to form a combustible mixture. The combustible mixture is burned and forms the recirculated low oxygen content gas flow that drives a turbine. A portion of the recirculated low oxygen content gas flow is recirculated from the turbine to the turbine compressor using a recirculation loop. The compressed ambient gas flow rate and the fuel stream flow rate are adjusted to achieve substantially stoichiometric combustion. An excess portion, if any, of the compressed ambient gas flow is vented. A portion of the recirculated low oxygen content gas flow is extracted using an extraction conduit.

Control method for stoichiometric exhaust gas recirculation power plant

A fuel control system for a gas turbine engine that includes a primary fuel circuit, a fuel tuning circuit, a plurality of combustors connected to the fuel tuning circuit, oxygen and carbon dioxide sensors in the exhaust stream and a feedback control loop operatively connected to the fuel tuning circuit and to the oxygen and carbon monoxide sensors which serve to control the precise amount of fuel and air being fed to each one of the plurality of combustors in the engine. A parallel array of control valves in a tuning fuel circuit connect to corresponding ones of the plurality of combustors in the gas turbine engine. The fuel control system thereby 'fine tunes' the amount of fuel and air being fed to each combustor using data regarding the detected oxygen and carbon monoxide concentrations in the exhaust gas as provided through a feedback control loop.

Stoichiometric exhaust gas recirculation and related combustion control

In one embodiment, a system is provided that includes a first gas turbine engine. The first gas turbine engine has a first compressor configured to intake air and to produce a first compressed air and a first combustor configured to combust a first mixture to produce a first combustion gas. The first mixture has a first fuel, at least a first portion of the first compressed air, and a second combustion gas from a second gas turbine engine. The first gas turbine engine also includes a first turbine configured to extract work from the first combustion gas.

System and method for exhaust gas use in gas turbine engines

A process for treating coal includes contacting the coal with a leaching agent configured to remove a mineral from the coal; forming a wastewater stream comprising water and a concentration of a contaminant; and contacting the wastewater stream with a first side of a reverse osmosis membrane under pressure, wherein a permeate stream comprising a reduced concentration of the contaminant permeates the reverse osmosis membrane and flows from a second side of the reverse osmosis membrane, and a concentrate stream comprising an increased concentration of the contaminant is retained on the first side of the reverse osmosis membrane.

Dewatering system and process for increasing the combined cycle efficiency of a coal powerplant

A combined cycle power plant includes a compressor section including a compressor inlet and a compressor outlet, and a turbine section operatively connected to the compressor section. The turbine section includes a turbine inlet and a turbine outlet. A heat recovery steam generator (HRSG) is fluidly connected to the turbine outlet. A combustor includes a head end and a combustor discharge. The head end is fluidly connected to the compressor outlet and the combustor discharge is fluidly connected to the turbine inlet. A carbon dioxide collection system is fluidly connected to one of the compressor outlet and the head end of the combustor. The carbon dioxide collection system is configured and disposed to extract a first fluid comprising carbon dioxide and a second fluid from a substantially oxygen free fluid flow passed from the one of the compressor outlet and the head end of the combustor.

Combined cycle power plant including a carbon dioxide collection system

A power plant arrangement and method of operation is provided. The power plant arrangement includes at least one main air compressor and at least one gas turbine assembly. Each assembly includes a turbine combustor for mixing a portion of compressed ambient gas with a portion of a recirculated low oxygen content gas flow and a fuel stream for burning to form the recirculated low oxygen content gas flow. A recirculation loop for recirculating at least a portion of the recirculated low oxygen content gas flow from the turbine to a turbine compressor is provided. At least one auxiliary apparatus is fluidly connected to the main air compressor and may be at least partially powered by the compressed ambient gas flow.

Power plant with gas separation system

A gas turbine includes a compressor with a plurality of pressure plates, a combustor downstream from the compressor, and a turbine downstream from the combustor and axially aligned with the compressor. The combustor produces combustion gases that flow to the turbine. A first manifold connected to the combustor contains a first process gas for combustion in the combustor. A second manifold connected upstream of the turbine contains a second process gas, and a portion of the second process gas flows to the plurality of pressure plates.

Oxyfuel gas turbine system and method

At least one main air compressor makes a compressed ambient gas flow. The compressed ambient gas flow is delivered to a turbine combustor at a pressure that is greater than or substantially equal to an output pressure delivered to the turbine combustor from a turbine compressor as at least a first portion of a recirculated gas flow. A fuel stream is delivered to the turbine combustor, and a combustible mixture is formed and burned, forming the recirculated gas flow. A turbine power is produced that is substantially equal to at least a power required to rotate the turbine compressor. At least a portion of the recirculated gas flow is recirculated through a recirculation loop. An excess portion of the recirculated gas flow is vented or a portion of the recirculated gas flow bypasses the turbine combustor or both.

Method of operating a stoichiometric exhaust gas recirculation power plant

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Simpsonville, SC, United States of America

Samuel David Draper