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General Electric Technology Gmbh patents


Recent patent applications related to General Electric Technology Gmbh. General Electric Technology Gmbh is listed as an Agent/Assignee. Note: General Electric Technology Gmbh may have other listings under different names/spellings. We're not affiliated with General Electric Technology Gmbh, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "G" | General Electric Technology Gmbh-related inventors


Gas-insulated electrical apparatus filled with a dielectric gas

The invention relates to medium- or high-voltage, gas-insulated electrical apparatus (10) comprising: a hermetically sealed chamber (12) filled with a dielectric gas, the gas containing at least one of fluoronitrile, carbon dioxide, dinitrogen or dioxygen; at least two electrical contacts (16, 20) arranged coaxially with a main axis (a) of the chamber (12), of which at least one (20) can move axially inside the chamber (12) between a closed position in which the two contacts (16, 20) are in electrical contact with one another and an open position in which the contacts (16, 20) are located at a distance from one another; and a cut-off mechanism (14) for extinguishing the electric arc that forms between the two contacts (16, 20) as the at least one moving contact (20) moves from the closed position into the open position. The cut-off mechanism is of the rotating arc type.. ... General Electric Technology Gmbh

Capacitor unit and electrical apparatus

There is provided a capacitor unit, for use as a high voltage device, comprising: a capacitor element; a housing (including a plurality of walls arranged to contain the capacitor element within the housing, the plurality of walls including first and second end walls, the plurality of walls further including a side wall extending between the end walls, the outer surface of the side wall being larger than the outer surface of each end wall; and at least one capacitor terminal electrically connected to the capacitor element, wherein the or each capacitor terminal is mounted on or extends through the side wall.. . ... General Electric Technology Gmbh

Gas analysis

An apparatus may have a first reflector and a second reflector positioned on either side of a sample volume for a gas sample. The configuration of the first reflector may be variable between at least first and second configurations, wherein each of the first and second configurations is arranged such that a beam of optical radiation from an optical beam origin is directed to a detector location via the sample volume. ... General Electric Technology Gmbh

System and method for combustion system control

A combustion system includes a combustion chamber, a plurality of fuel introduction locations in the combustion chamber where fuel and air are provided to the combustion chamber for combustion, a fluid flow control device associated with each fuel introduction location, each fluid flow control device being controllable to vary an amount of the air supplied to each fuel introduction location, a plurality of sensing devices configured to monitor a plurality of operational parameters of the combustion system, and a control unit configured to control each fluid flow control device to control the amount of air supplied at each fuel introduction location independent of the amount of air supplied at the other fuel introduction locations, and to control the amount of air provided to all other air introduction locations, in dependence upon at least one of the plurality of operational parameters to minimize excess air provided to the combustion chamber.. . ... General Electric Technology Gmbh

System and method for sulfur recapture in a chemical looping system

A method for recapturing sulfur in a chemical looping system includes receiving a flue gas stream containing a sulfur-containing species, reducing a temperature of the flue gas stream, introducing a calcium-based makeup material to the reduced temperature flue gas stream, capturing the sulfur-containing species from the reduced temperature flue gas stream, and recycling the sulfur-containing species to a reducer of the chemical looping system.. . ... General Electric Technology Gmbh

System and method for recovering ammonia from a gas stream

A system for recovering ammonia from a gas stream is provided. The system includes a regenerator and a carbon dioxide wash station.. ... General Electric Technology Gmbh

Method of controlling a converter

A method of controlling a converter including dc terminals for connection to a dc network, the converter including a limb between the dc terminals, each limb including a phase element having switching elements and a ac terminal for connection to an ac network, the switching elements being configured to switch interconnecting a dc and ac side voltage; a sub-converter connected in series with the dc side of an electrical block and controllably become a first voltage source; and a sub-converter connected in parallel with the block, configured to controllably become a second voltage source. The method includes obtaining a dc side voltage and converter demand which the corresponding limb and converter track; determining a sub-converter voltage that each sub-converter must contribute to track the corresponding required dc side and converter voltage; controlling each sub-converter to achieve the corresponding determined voltage; and determining one or more optimal sub-converter voltages.. ... General Electric Technology Gmbh

Voltage regulator system and method of use

Embodiments of the disclosure pertain to a voltage regulator system having a voltage regulation controller and a transformer assembly. The transformer assembly includes a coil winding, a multi-contact tap arrangement connected to the coil winding, and a multifurcated tap changer system that includes a first tap changer having a contactor element which makes contact with a first contact of the multi-contact tap arrangement when the controller provides a positioning stimulus based on sensing a voltage deviation from a nominal output voltage of the voltage regulator system. ... General Electric Technology Gmbh

Voltage regulator system and method of use

Embodiments of the disclosure pertain to a voltage regulator system having a voltage regulation controller and a transformer assembly. The transformer assembly includes a coil winding, a multi-contact tap arrangement connected to the coil winding, and a multifurcated tap changer system that includes a first tap changer having a contactor element which makes contact with a first contact of the multi-contact tap arrangement when the controller provides a positioning stimulus based on sensing a voltage deviation from a nominal output voltage of the voltage regulator system. ... General Electric Technology Gmbh

System and method for a chilled ammonia-based carbon dioxide removal process

A chilled ammonia-based carbon dioxide removal system is provided. The system includes a direct contact cooler, a carbon dioxide absorber and a water wash station.. ... General Electric Technology Gmbh

Coanda effect moisture separator system

The present application provides a pre-separator for use with a flow of steam entering a moisture separator reheater. The pre-separator may include a neck, an internal baffle, a wall, a first pathway defined between the neck and the internal baffle, and a second pathway defined between the internal baffle and the wall. ... General Electric Technology Gmbh

Improvements in or relating to the control of voltage source converters

A method of controlling a voltage source converter including a converter limb corresponding to a respective phase of the converter, each converter limb extending between first and second dc terminals and including first and second limb portions separated by an ac terminal and each limb portion including a chain-link converter which is operable to provide a stepped variable voltage source, includes the steps of obtaining a ac current demand phase waveform and a dc current demand for each corresponding converter limb is configured to track, and carrying out mathematical optimization to determine an optimal limb portion current for each limb portion must contribute to track the corresponding required ac current demand phase waveform and the required dc current demand while minimising current conduction losses within each limb portion and additionally managing the energy stored by each chain-link converter.. . ... General Electric Technology Gmbh

Voltage source converter

A voltage source converter comprises a converter arm extending between two terminals each terminal being connectable to a or a respective electrical network, the converter arm including a valve that includes at least one module, the or each module being operable to selectively provide a voltage source; and a controller programmed to selectively operate the valve to clamp a voltage at either or both of the two terminals and thereby operate the valve as a current limiter to limit a selected current flowing in the converter arm at or below a fixed or variable current threshold.. . ... General Electric Technology Gmbh

System and method for preheating a beater mill

A method for preheating a beater mill is provided. The method includes: rotating a beater wheel disposed within the beater mill to facilitate circulation of a gas stream between the beater mill and a furnace fluidly connected to each other via both a pulverized fuel conduit and a flue gas recirculation conduit; generating a burner gas via a burner disposed within the flue gas recirculation conduit such that the burner gas joins and heats the gas stream circulating through the beater mill and the furnace; and adjusting at least one of an air supply and a fuel supply to the burner via a controller based at least in part on one of a temperature of the gas stream at an entrance of the beater mill, a temperature of the gas stream at an exit of the beater mill, and an oxygen level within the beater mill.. ... General Electric Technology Gmbh

06/07/18 / #20180156454

Systems and methods for testing flue gas cleaning systems

A sampling assembly includes a vessel that is configured to receive a flue gas stream at a predetermined temperature and a regent product. The sampling assembly also includes an agitator positioned within the vessel. ... General Electric Technology Gmbh

06/07/18 / #20180154395

Classifier and method for separating particles

A classifier for separating particles is provided. The classifier includes a rotor having a direction of rotation defined by a rotational axis of the rotor, and a plurality of blades disposed on the rotor around the rotational axis. ... General Electric Technology Gmbh

05/31/18 / #20180149691

Methods and systems for open-phase detection in power transformers

The open-phase condition of a standby power transformer is detected by monitoring functions of the phase currents. The functions have parameters calculated based on reference currents, which constitute a “fingerprint” when all the phases are connected.. ... General Electric Technology Gmbh

05/24/18 / #20180145499

Bipolar dc power transmission scheme

A bipolar dc power transmission scheme including first and second dc poles, each including a respective dc power transmission medium extending between first and second ends; a plurality of converters wherein each end of the transmission medium of each of the poles is operatively connected to at least one of the converters to form a rectifier and an inverter at opposite ends of the dc power transmission media; and a controller to operate at least one converter of one of the rectifier and inverter in a control mode and at least one converter of the other of the rectifier and inverter in a second control mode in response to a fault occurring on either of the poles. Additionally, the first control mode decreases and the second control mode increases the operating dc voltage of the or each corresponding converter from a normal operating voltage value.. ... General Electric Technology Gmbh

05/24/18 / #20180142892

System and method for impingement cooling of turbine system components

A combustor includes a combustor shell, an inner liner disposed inside the combustor shell and having an inner surface defining a cavity configured to receive hot combustion gases from a combustion chamber of the combustor, and an outer surface, the combustor shell and the inner liner defining an annular flow channel therebetween, and a segment carrier operatively connected to the inner liner and operative to receive an upper portion of the inner liner, the segment carrier and the inner liner defining a purging cavity therebetween. The inner liner includes a plurality of impingement jet holes configured to direct a flow of cooling air from the annular flow channel to the purging cavity.. ... General Electric Technology Gmbh

05/24/18 / #20180142889

System and method for active cooling of a grate bar for an incinerator of a waste-to-energy plant

A cooling system for a grate bar of an incinerator of solid materials is provided includes a feed grate having a plurality of grate bars, at least one of the grate bars including a body having a top surface, a bottom surface, a first end and a second end, a first aperture in the body and a second aperture in the body, and an internal passageway defined within the body and fluidly connecting the first aperture to the second aperture, the first aperture arranged to receive a gas therethrough into the body, and the second aperture arranged to provide an egress for the gas out of the body. The cooling system further includes a manifold duct fluidly coupled to the second aperture for receiving the gas from the second aperture. ... General Electric Technology Gmbh

05/24/18 / #20180140999

Decomposition of ammonium halides for mercury emissions reduction

Apparatus and methods for coal combustion and for flue gas mercury emissions reduction following the combustion of coal use ammonium halides. Ammonium halides are supplied to a perforated housing within a duct for decomposition and release of nh3 and hbr or hcl into the flue gas for oxidation of elemental mercury present in the flue gas. ... General Electric Technology Gmbh

05/17/18 / #20180139283

A monitoring assembly for an industrial ontrol system

An industrial control systems to control industrial processes and production, there is provided a monitoring assembly for such an industrial control system. The monitoring assembly comprises an industrial control system that includes a communications device which is connectable to a communications network and which is configured to attempt to send a request via the communications network to an internet address. ... General Electric Technology Gmbh

05/17/18 / #20180138821

Improvements in or relating to voltage source converters

A voltage source converter comprises a converter limb including first and second dc terminals for connection to a dc network. Each converter limb includes first and second limb portions which are separated by an ac terminal for connection to an ac network. ... General Electric Technology Gmbh

05/17/18 / #20180138692

Undervoltage-release circuit of operating-mechanism for tripping a voltage circuit-breaker

A undervoltage release circuit comprising a solenoid and a spring, the solenoid acting against the spring and being connected to a trip-latch which trips a circuit-breaker as soon as a control voltage drops under a voltage level, characterized in that it comprises a voltage determining device and a switching element controlled by a command signal, the switching element being connected in series with the solenoid, the voltage determining device comprising means for measuring the control-voltage and means for generating a signal according to the control voltage measured, the signal according to the control voltage measured constituting the command signal so that the switching element is closed when the control voltage measured is equal or higher than the voltage level and opened as soon as the control voltage is less than the voltage level.. . ... General Electric Technology Gmbh

05/17/18 / #20180138002

Improvements in or relating to voltage source converters

A spring arrangement for operating a high and medium voltage circuit breaker comprising a cylindrical housing having a main axis, an actuation rod, a coil spring arranged in the cylindrical housing, coupled with the rod, and a coupling arrangement coupling an end of the spring with an end of the rod, wherein the coupling arrangement comprises an articulation for guiding an end of the rod in rotation with respect to the second end of the spring around a second axis perpendicular to said main axis and comprises sliding means for the translational guiding of the second end of the rod along said main axis.. . ... General Electric Technology Gmbh

05/17/18 / #20180136671

Pulse valve with pressure vessel penetration

A valve with relatively reduced tank penetration is useful for cleaning at least a portion of a filter unit, such as multiple filter bags, arranged in a filter installation for filtering polluted gas passed therethrough. This valve is preferably a relatively high performance pulse valve of relatively small pressure vessel penetration cross section area useful with relatively lower cost pressure vessels.. ... General Electric Technology Gmbh

05/10/18 / #20180131224

Method, system and device for regulating voltage fluctuations induced by at least one renewable energy source

The invention relates to a method of regulating voltage in an energy distribution network to which there are connected both a renewable energy generation system and an energy storage unit (11), the method being characterized in that, over a time window, a charging power of the electrical energy storage unit (11) is controlled so as to compensate for variations in the instantaneous voltage level induced by the renewable energy generation system relative to a prediction of the mean voltage level induced by the renewable energy generation system over the time window.. . ... General Electric Technology Gmbh

05/10/18 / #20180131189

Dynamic line rating determination apparatus and associated method

A dynamic line rating determination apparatus configured to control the current applied to a power line conductor by determining a dynamic maximum current rating for said power line conductor, based on measured voltage and current phase vectors taken at two temporally spaced sample times, the phase vectors including a voltage and current phase vector for each phase of electrical power carried by the power line conductor at a first and second end of the power line conductor; and determining the dynamic maximum current rating by; applying the phase vectors to a power line model to estimate the conductor temperature, applying the estimate to a thermal model to predict a steady state temperature that the power line conductor will reach, and calculate the dynamic maximum current rating based on the prediction of the steady state temperature, a power line conductor current, and a maximum temperature limitation value.. . ... General Electric Technology Gmbh

05/03/18 / #20180122609

Main shaft for the operation mechanism of a circuit breaker

A shaft for an operating mechanism of a circuit breaker, this shaft comprising a splined axle carrying cams intended to cooperate with other parts of the mechanism, this shaft being intended to be carried by ball bearings and to be connected to an actuating member of the circuit breaker to move it. According to the invention, the shaft comprises a cast part comprising the cams and comprising seats for the ball bearings at each of its extremities, this cast part being having at its center a splined hole to receive the splined axle.. ... General Electric Technology Gmbh

05/03/18 / #20180122608

Enclosure for the operation mechanism of a circuit breaker

An enclosure for the operating mechanism of a circuit breaker, this mechanism including a main shaft and secondary shafts, and a spring to actuate the mechanism. This enclosure includes a parallelepiped base having an open face and including a bottom wall opposite to its open face, this bottom wall having holes to receive bearings carrying the shafts; a supporting part including a main wall to be mounted at the open face of the base, the main wall including holes to receive bearings carrying the other extremities of the shafts; a cover to close the supporting part.. ... General Electric Technology Gmbh

05/03/18 / #20180119952

System and method for removing ash deposits within a boiler

A system for removing ash deposits within a boiler is provided. The system includes a soot blower disposed within the boiler, and a gas supply line in fluid communication with the soot blower and a gas source. ... General Electric Technology Gmbh

05/03/18 / #20180119577

System and method for providing supercritical steam

A system for providing supercritical steam including a first boiler that generates steam via combusting a first fuel, and a second boiler fluidly connected to the first boiler via a conduit which heats the generated steam to supercritical steam temperatures via combusting a second fuel. A first temperature of the conduit may be below a critical corrosion temperature and a second temperature of the conduit is greater than or equal to the critical corrosion temperature. ... General Electric Technology Gmbh

05/03/18 / #20180117661

System, method and apparatus for manufacturing boiler tubes

A method for manufacturing boiler tubes includes the steps of removing end caps from a plurality of tubes, the plurality of tubes including at least a first tube and a second tube, cleaning an outer surface of the first tube and the second tube, forming a weld preparation on an upstream end of the first tube, forming a weld preparation on a downstream end of the second tube, welding the upstream end of the first tube to the downstream end of the second tube to form a butt weld, to produce a long tube, and with an automated device, measuring a parameter of at least the first tube and the second tube. The steps of removing the end caps, cleaning the outer surface of the tubes, forming the weld preparations, welding the first tube to the second tube, and measuring the parameter are performed autonomously.. ... General Electric Technology Gmbh

04/19/18 / #20180109369

Systems and methods for synchronizing time sources within a protection zone of a digital power substation

Provided is a system for synchronizing time sources within a protection zone of a digital power substation. The system includes a global time source, a processing communication network, an electronic, and a process unit. ... General Electric Technology Gmbh

04/19/18 / #20180107691

Intelligent electrical distribution grid control system data

Aspects of a multi-level electrical distribution control system associated with an electrical distribution grid are disclosed. Data access and processing across the multi-level control system and the electrical distribution grid can provide improved utilization of energy within the electrical distribution grid. ... General Electric Technology Gmbh

04/19/18 / #20180106166

Feedwater bypass system for a desuperheater

The present application provides a combined cycle system. The combined cycle system may include a heat recovery steam generator, a feedwater source positioned upstream of the heat recovery steam generator, a desuperheater positioned downstream of the heat recovery steam generator, a first extraction from the heat recovery steam generator to the desuperheater, and a second extraction from upstream of the heat recovery steam generator to the desuperheater.. ... General Electric Technology Gmbh

04/12/18 / #20180101943

System, method and apparatus for locating the position of a component for use in a manufacturing operation

A system for locating the position of a component includes, an image capture device, the image capture device being configured to capture an image of a component, a working implement mounted in fixed relation to the image capture device, a positioning system configured to adjust a position of the image capture device and the working implement in relation to the component, and an image processing module in communication with the image capture device, the imaging processing module being configured to receive the image from the image capture device and to identify at least one feature of the component. The positioning system is configured to adjust the position of the image capture device based on a location of the identified feature within the image to align the image capture device with the identified feature, and to align the working implement with the identified feature based upon an offset between the image capture device and the working implement.. ... General Electric Technology Gmbh

04/12/18 / #20180100647

Molten salt once-through steam generator

An advanced molten salt once-through steam generator system functional on hot molten salt supplied via a supply line. The system includes a steam generator, a feedwater supply line, at least one high pressure heaters and a separator. ... General Electric Technology Gmbh

04/12/18 / #20180099571

Dispatching vehicle-to-grid ancillary services with discrete switching

Techniques for controlling dispatch of electric vehicles (evs) to perform vehicle-to-grid regulation of power of an electric grid are presented. An aggregator component can individually control transitioning respective evs of a set of evs between a charging state and a not-charging state. ... General Electric Technology Gmbh

04/05/18 / #20180097365

Power transmission network

A power transmission network comprises, an ac electrical system ac transmission link from the ac electrical system to at least one ac-dc converter which includes: an ac connecting point connected to the ac transmission link and a dc connecting point for connection to a dc transmission link and a control system configured to operate each ac-dc converter in an ac voltage control mode as an ac slack bus to control a magnitude and/or a frequency of an ac voltage of the ac transmission link at a or a respective steady-state value and facilitating a power transfer between its connecting points to accommodate power generated or supplied to the ac electrical system. The control system is further configured to operate each first ac-dc converter in a protection mode to protect each ac-dc converter from an overvoltage and/or an overcurrent.. ... General Electric Technology Gmbh

04/05/18 / #20180096628

Dynamic dispatcher training simulator

In example embodiments, there is provided a dynamic dispatcher simulator for an electrical power system. The dynamic dispatcher simulator can be operable to receive an input from a user identity during a run time, wherein the input represents a disturbance event indicative of a simulated disturbance to an electrical power system. ... General Electric Technology Gmbh

04/05/18 / #20180095123

Enhanced distrubance management of a power grid system

In example embodiments, there is provided enhanced disturbance management for an electrical power system. An enhanced disturbance management component can be operable to read monitoring data based on power flow measurements associated with measurement devices connected to an electrical power system, wherein the monitoring data can comprise alarm data indicative of an electrical disturbance within the electrical power system, and topology data indicative of a topology of the electrical power system. ... General Electric Technology Gmbh

04/05/18 / #20180093223

Multi-function duct for dry scrubber system

A multi-function duct for a dry scrubber system useful for processing a gas stream, such as a flue gas stream produced by a fossil fuel fired boiler, a combustion process or the like, is provided. The multi-function duct is useful for a circulating dry scrubber (cds) dry flue gas desulfurization (dfgd) system operable for dry or moistened reducing agent distribution into a flue gas stream flowing therethrough. ... General Electric Technology Gmbh

04/05/18 / #20180093222

Multi-function duct for dry scrubber system

A multi-function duct for a dry scrubber system useful for processing a gas stream, such as a flue gas stream produced by a fossil fuel fired boiler, a combustion process or the like, is provided. The multi-function duct is useful for a circulating dry scrubber (cds) dry flue gas desulfurization (dfgd) system operable for dry or moistened reducing agent distribution into a flue gas stream flowing therethrough. ... General Electric Technology Gmbh

03/29/18 / #20180088539

Method for integrating individual load forecasts into a composite load forecast to present a comprehensive, synchronized and harmonized load forecast

A method is provided for merging different load forecasts for power grid centers. Area load forecasts are accepted from load forecast engines. ... General Electric Technology Gmbh

03/22/18 / #20180082568

Machine protection and diagnostic systems and methods

One or more embodiments of the disclosure pertain to a protection and diagnostic system that can generate a trip/alarm signal by executing a diagnostic procedure upon a machine that includes a rotating part. The diagnostic procedure can include using sensors to obtain performance parameters of various tagged critical and/or less critical sub-systems of the machine when the rotating part is rotating; determining, in real time, a system performance index of the machine based on the performance parameters; using a protection model to determine a sub-system performance index associated with at least one tagged sub-system of the machine; determining an asset health index based on combining the system performance index and the sub-system performance index; and generating the trip/alarm signal when the asset health index exceeds a threshold value. ... General Electric Technology Gmbh

03/22/18 / #20180080653

Burner assembly for a burner of a gas turbine

A burner assembly of a gas turbine comprising: a tubular body defining the flow path for the hot gas of the combustion during the turbine operation; an aperture for a fuel lance; a wearing ring of a sacrificial material configured to correspond to the edge of the aperture; a contacting leg extending from the wearing ring on the tubular body; a pre-tension system configured to contact the contacting leg in order to provide a pre-tension force on the ring.. . ... General Electric Technology Gmbh

03/15/18 / #20180076619

Start-up of hvdc networks

A method and apparatus for controlling a voltage source converter to energise a dc link. A voltage order generating module generates a voltage order for controlling the voltage source converter to generate a dc voltage on the dc link. ... General Electric Technology Gmbh

03/08/18 / #20180069543

Switch apparatus

An apparatus and methods of breaking a circuit using a switch are disclosed. In an example, a variable voltage is applied across a switch, which comprises a series connection of switching elements which are individually controllable between a blocking state and a conductive state. ... General Electric Technology Gmbh

03/08/18 / #20180069469

Control of voltage source converters

A method and apparatus for controlling a fault blocking voltage source converter apparatus which is, in use, connected to an ac system and a dc system for power transmission, in the event of a dc side interruption operating the voltage source converter apparatus after identification of a need for a dc side interruption based on a voltage order, so as to extract at least some electrical energy stored in the connected dc system to the voltage source converter apparatus.. . ... General Electric Technology Gmbh

03/08/18 / #20180067084

Inspection probe

An inspection apparatus, including an extendable structure, an inspection probe, a drive, a sensor, and a processor. The extendable structure includes an end fixed to the inspection probe and insertable into a gap defined between a first surface and a second surface. ... General Electric Technology Gmbh

03/01/18 / #20180062482

Rotor retaining ring

The present application provides a dynamoelectric machine. The dynamoelectric machine may include a stator, a rotor, and an air gap separating the stator and the rotor. ... General Electric Technology Gmbh

03/01/18 / #20180062390

Primary power grid frequency response characterization using phasor measurement unit data

The technology is generally directed towards characterizing primary frequency response parameters (e.g., frequency response coefficient, inertia, damping, droop) for an interconnection, region, and power plant utilizing phasor measure unit (pmu) data captured during an event (e.g., a generation trip event) that causes an imbalance in the power grid system. Pre-processing of localized pmu based frequency measurements combined with system identification techniques fit the observed frequency response to estimate parameters such as system inertia, frequency response coefficient, turbine time constant, system damping and governor droop that characterize the interconnection-wide frequency response.. ... General Electric Technology Gmbh

03/01/18 / #20180060777

Multi-interval dispatch system tools for enabling dispatchers in power grid control centers to manage changes

A system tool that provides dispatchers in power grid control centers with a capability to manage changes. Included is a user interface and a plurality of scheduler engines. ... General Electric Technology Gmbh

03/01/18 / #20180059087

Bi-directional oil-flow adapter for attaching to a valve-controlled port of a transformer

Certain embodiments of the disclosure relate to a bi-directional oil-flow adapter that is attachable to a valve-controlled port of a transformer housing in which oil is contained for cooling parts of the transformer such as a primary coil and a secondary coil. The bi-directional oil-flow adapter not only allows for an oil sample to be drawn out of the transformer housing via the valve-controlled port but also allows for the oil sample to be used (along with an additional volume of oil if so desired) for flushing the valve-controlled port in order to ensure that a subsequent oil sample is different than a current oil sample. ... General Electric Technology Gmbh

03/01/18 / #20180058698

Tempered ammonia injection for gas turbine selective catalyst reduction system

The present application provides a selective catalyst reduction system for use with a combustion gas stream of a gas turbine. The selective catalyst reduction system may include an inlet positioned about the gas turbine, a combined ammonia-tempering air injection grid positioned about the inlet, and a catalyst positioned downstream of the combined ammonia-tempering air injection grid. ... General Electric Technology Gmbh

03/01/18 / #20180058687

Overfire air system for low nitrogen oxide tangentially fired boiler

The present application provides a tangentially fired boiler. The tangentially fired boiler may include a combustion chamber and an overfire air system positioned about the combustion chamber. ... General Electric Technology Gmbh

03/01/18 / #20180058292

Mobile selective catalyst reduction system

The present application provides a mobile selective catalyst reduction system for use at a remote location. The mobile selective catalyst reduction system may include a first trailer with an ammonia delivery system and a tempering air system mounted thereon in whole or in part and a second trailer with a selective catalyst reduction section mounted thereon in whole or in part. ... General Electric Technology Gmbh

03/01/18 / #20180058256

Creep damage indicator module for a valve and actuator monitoring system

The present application provides a method of evaluating valve creep damage in a turbine by a data acquisition system. The method may include the steps of receiving a number of operating parameters from a number of sensors including steam temperatures and steam pressures about the valve over time, generating a design material model for the valve, determining an indicator for consumed creep lifetime based on the steam temperature and steam pressures about the valve over time as compared to the design material model, and altering one or more of the operating parameters and/or initiating repair procedures based upon the consumed creep lifetime indicator.. ... General Electric Technology Gmbh

03/01/18 / #20180058255

Guide condition assessment module for a valve and actuator monitoring system

The present application provides a method of evaluating valve spindle leakage and guide deformation in a turbine by a data acquisition system. The method may include receiving a number of operating parameters from a number of sensors, generating a friction hysteresis curve based on the operating parameters, determining a friction characteristic based on the friction hysteresis curve, comparing the friction characteristic to previous friction characteristics, and altering one or more of the operating parameters and/or initiating repair procedures if the friction characteristic is increasing and/or exceeds a predetermined value.. ... General Electric Technology Gmbh

03/01/18 / #20180058254

Solid particle erosion indicator module for a valve and actuator monitoring system

The present application provides a method of evaluating valve conditions in a turbine by a data acquisition system. The method may include the steps of receiving a number of operating parameters from a number of sensors, wherein the operating parameters may include steam temperatures determined over time and steam pressure, determining a steam chemistry, a throttling history, and a piping material, determining a probability of valve erosion based upon the steam temperatures determined over time, the steam chemistry, the throttling history, and the piping material, and altering one or more of the operating parameters and/or initiating repair procedures based upon the determined probability.. ... General Electric Technology Gmbh

03/01/18 / #20180058253

Advanced tightness test evaluation module for a valve and actuator monitoring system

The present application provides a method of evaluating valve tightness in a turbine by a data acquisition system. The method may include the steps of receiving a number of operating parameters from a number of sensors, opening a first valve and closing a second valve, closing the first valve, determining a pressure decay time between the first valve and the second valve, determining a stable value of pressure between the first valve and the second valve, comparing the pressure decay time and the stable value of pressure to predetermined values, and altering one or more of the operating parameters and/or initiating repair procedures if the pressure decay time and/or the stable value of pressure is increasing and/or exceeds the predetermined values.. ... General Electric Technology Gmbh

03/01/18 / #20180058252

Insulation quality indicator module for a valve and actuator monitoring system

The present application provides a method of evaluating insulation quality in a turbine by a data acquisition system. The method may include the steps of receiving a number of operating parameters from a number of sensors, wherein the operating parameters may include casing temperatures and insulation temperatures, comparing the casing temperatures and the insulation temperatures to predetermined casing and insulation values, and altering one or more of the operating parameters and/or initiating repair procedures if the casing temperatures fall below the casing predetermined values and/or the insulation temperatures exceed the insulation predetermined values.. ... General Electric Technology Gmbh

03/01/18 / #20180058251

Flexible service interval counter module for a valve and actuator monitoring system

The present application provides a method of evaluating inspection intervals in a turbine by a data acquisition system. The method may include the steps of receiving a number of operating parameters from a number of sensors, wherein the operating parameters may include steam pressure, steam temperature, metal temperature, and valve spindle position, comparing one or more of the operating parameters to predetermined values, and shortening an inspection interval if the one or more of the operating parameters exceed the predetermined values for longer than a predetermined duration.. ... General Electric Technology Gmbh

03/01/18 / #20180058250

Spindle vibration evaluation module for a valve and actuator monitoring system

The present application provides a method of evaluating valve spindle vibration in a turbine by a data acquisition system. The method may include the steps of receiving a number of operating parameters from a number of sensors, wherein the operating parameters may include valve spindle vibration, comparing the valve spindle vibration to a predetermined value, and altering one or more of the operating parameters if the valve spindle vibration exceeds the predetermined value.. ... General Electric Technology Gmbh

03/01/18 / #20180058249

Valve stroke and spindle way counter module for a valve and actuator monitoring system

The present application provides a method of evaluating spindle component wear in a turbine by a data acquisition system. The method may include the steps of receiving a number of operating parameters from a number of sensors, wherein the operating parameters may include spindle position from which a number of spindle strokes and an accumulated spindle distance may be determined and temperature, generating a movement history based on the operating parameters, comparing the movement history to predetermined values, and altering one or more of the operating parameters and/or initiating repair procedures if the movement history exceeds predetermined values.. ... General Electric Technology Gmbh

03/01/18 / #20180058248

Advanced startup counter module for a valve and actuator monitoring system

The present application provides a method of evaluating fatigue damage in a turbine by a data acquisition system. The method may include the steps of receiving a number of operating parameters from a number of sensors and based upon the operating parameters, determining: a run time from start-up until the turbine reaches x percent load and a start-up temperature transient from start-up until the turbine reaches x percent load, and calculating: a run time ratio of the determined run time until the turbine reaches x percent load to a predetermined run time, a start-up temperature ratio of the determined start-up temperature transient to a predetermined start-up temperature transient, and a fatigue severity factor by averaging the run time ratio and the start-up temperature ratio. ... General Electric Technology Gmbh

03/01/18 / #20180058245

Tightness test evaluation module for a valve and actuator monitoring system

The present application provides a method of evaluating valve tightness in a turbine by a data acquisition system. The method may include the steps of receiving a number of operating parameters from a number of sensors, wherein the operating parameters may include rotor acceleration and rotor speed, comparing the rotor acceleration and the rotor speed to predetermined values, and altering one or more of the operating parameters and/or initiating repair procedures if the rotor acceleration and/or the rotor speed is increasing and/or exceeds predetermined values.. ... General Electric Technology Gmbh

03/01/18 / #20180056238

Simplified air quality control system for fluid catalytic cracking units

The present application provides an air quality control system for cleaning a flue gas from a fluid catalytic cracking unit. The air quality control system may include a selective catalytic reduction system in communication with the flue gas to remove nitrogen oxides and a wet scrubber positioned downstream of the selective catalytic reduction system and in communication with the flue gas to remove sulfur oxides and particulates.. ... General Electric Technology Gmbh

02/22/18 / #20180054063

Enhanced island management application for power grid systems

The technology is generally directed towards real-time power grid island detection and monitoring, including obtaining and outputting information about the cause and location of the islanding event, island size, island composition, phasor measurement units in each island, and the overall island frequency. The technology provides for suggested island resynchronization actions such as one or more circuit breakers that can be closed by the power grid system operators to resynchronize an island with the main island/system. ... General Electric Technology Gmbh

02/15/18 / #20180048304

Semiconductor switching string

A semiconductor switching string including a series-connected switching assemblies. Each assembly has a main switching element including first and second connection terminals which current flows between when the main switching element is on. ... General Electric Technology Gmbh

02/15/18 / #20180045053

Stationary blades for a steam turbine and method of assembling same

A set of stationary blades for a steam turbine is provided. At least one of the stationary blades includes a suction side and an opposite pressure side, and a plurality of ejection channels defined in the at least one stationary blade. ... General Electric Technology Gmbh

02/08/18 / #20180040391

Gas-insulated medium-or high-voltage electrical apparatus including heptafluoroisobutyronitrile and tetrafluoromethane

The present invention relates to medium- or high-voltage equipment comprising a leaktight enclosure in which there are located electrical components and a gas mixture for providing electrical insulation and/or for extinguishing electric arcs that are likely to occur in the enclosure, the gas mixture comprising heptafluoroisobutyronitrile and tetrafluoromethane. Electrical components covered in solid dielectric layers of varying thickness are located inside the leaktight enclosure of the equipment of the invention.. ... General Electric Technology Gmbh

02/08/18 / #20180036739

Enclosures for vertical pulverizer systems

Enclosures for vertical pulverizer systems are disclosed. The enclosure may include a vertically oriented cylindrical body forming an internal cavity. ... General Electric Technology Gmbh

02/01/18 / #20180034746

Systems and methods for network failover in digital substations

Systems and methods for network failover in digital substations are provided. One method includes receiving, by an intelligent electronic device (ied) from a process interface unit (piu), in parallel a pre-configured data stream via a point-to point connection and one or more other data streams via an ethernet network. ... General Electric Technology Gmbh

02/01/18 / #20180034689

Systems and methods for configuration-less process bus with architectural redundancy in digital substations

This disclosure relates to systems and methods for configuration-less process bus. In one embodiment, the system includes at least one process interface unit (piu). ... General Electric Technology Gmbh

02/01/18 / #20180034382

Voltage source converter and control thereof

Methods and apparatus for hard switching of alternate-arm-converter voltage source converters. Such voltage source converters have a phase limb with a high and low side converter arm connecting an ac terminal to a high and low side dc terminal, respectively comprising a chain-link circuit in series with a director switch. ... General Electric Technology Gmbh

02/01/18 / #20180034257

Protection apparatus

In the field of multi-terminal electrical power network protection, a protection apparatus comprises a measurement apparatus to measure the respective terminal current (il, ir1, ir2, ir3, ir4, ir5) flowing at each terminal (l, r1, r2, r3, r4, r5) in a multi-terminal network that includes a plurality of electrically interconnected terminals (l, r1, r2, r3, r4, r5). The protection apparatus also includes a control unit that is programmed to process the measured terminal currents (il, ir1, ir2, ir3, ir4, ir5) to obtain first and second summed values (ipos(n), ineg(n)). ... General Electric Technology Gmbh

02/01/18 / #20180031401

Plant, measurement system, and method for measuring temperature and velocity of a flow of fluid

A method of measuring temperature and velocity of a fluid flow passing through a device of a plant includes the step of positioning at least two sensors in the device. For each sensor, a traveling path for an acoustic signal received from another sensor is determined. ... General Electric Technology Gmbh

02/01/18 / #20180028967

Method for capturing carbon dioxide

A method for integrating a carbon capture process with a process for cement production.. . ... General Electric Technology Gmbh

01/25/18 / #20180026435

Dc breaker

A dc breakers and in particular to dc breaker modules suitable for use in a high voltage dc circuit. The breaker module comprises at least a first breaker circuit (enclosed within a conductive enclosure. ... General Electric Technology Gmbh

01/18/18 / #20180019583

Dc circuit breaker with counter current generation

A circuit-breaker device, comprising a main branch and an auxiliary branch electrically in parallel with the main branch, wherein the main branch comprises at least one mechanical switch-disconnector in series with a breaker cell constituted of at least one semiconductor switch, and a snubber circuit in parallel with the at least one breaker cell, the snubber circuit including an energy storage element, wherein the mechanical switch-disconnector is switchable to selectively allow current to flow in the main branch in a first mode of operation or commutate current from the main branch to the auxiliary branch in a second mode of operation, characterized in that the snubber circuit further comprises a bleeder resistor arranged to create a counter current in the main branch when current is commutated from the main branch to the auxiliary branch by discharging the energy storage element.. . ... General Electric Technology Gmbh

01/18/18 / #20180019082

Drive device for an electric switching device

The invention relates to a drive device for an electrical switching device, in particular for a high-voltage switch, having a housing which can be filled with insulating gas, having an energy storage device which is arranged in the housing and has a spring and a stop against which the spring can be tensioned. According to the invention, an adjustment device which can be actuated from the exterior of the housing is provided, by means of which adjustment device a position of the stop in the housing can be adjusted along an axis.. ... General Electric Technology Gmbh

01/18/18 / #20180017290

Metal-ceramic coating for heat exchanger tubes of a central solar receiver and methods of preparing the same

Provided are metal-ceramic coatings for heat exchanger tubes of a central solar receiver and methods of preparing the same. The metal-ceramic coatings comprise at least one ceramic phase dispersed in a metal matrix and are disposed along the heat exchanger tubes to improve heat transfer and reduce oxidation of the heat exchanger tubes. ... General Electric Technology Gmbh

01/18/18 / #20180017253

Arrangement of a combustor and a device for selective non-catalytic reduction and pulsed injection method

The arrangement of a combustor and a device for selective non-catalytic reduction includes a nozzle for injecting a reagent, a control system for controlling the flow from the nozzle, the control system being arranged for generating a pulsed flow from the nozzle.. . ... General Electric Technology Gmbh

01/18/18 / #20180017252

Arrangement of a combustor and a device for selective non catalytic reduction and injection nozzle

The nozzle for injecting a reagent into a combustor has a body with a cavity, an occlusion for the cavity, a slit for injecting the reagent, at least one intermediate disc between the body and the occlusion, the at least one intermediate disc having at least one opening for the passage of the reagent, wherein the nozzle further has a first slit between the body and the at least one intermediate disc, a second slit between the occlusion and the at least one intermediate disc (56), and/or at least one slit having at least one corrugated border defining a variable size slit between a minimum size and a maximum size.. . ... General Electric Technology Gmbh

01/11/18 / #20180013290

Control circuit

A control circuit is provided, including first and second terminals for connection to an electrical network; a current transmission path extending between the first and second terminals, the current transmission path including first and second current transmission path portions, the first and second current transmission path portions being arranged to permit a current flowing, in use, between the first and second terminals and through the first current transmission path portion to bypass the second current transmission path portion and to permit a current flowing, in use, between the first and second terminals and through the second current transmission path portion to bypass the first current transmission path portion; and a controller configured to selectively remove the or each energy storage device from the respective current transmission path portion to cause current to flow from the electrical network through the current transmission path and the or each energy conversion element.. . ... General Electric Technology Gmbh

01/11/18 / #20180013280

A method of clearing a fault in a hvdc electrical network

A method of clearing a fault in a high voltage dc electrical network, including power converters interconnected by a dc power transmission, comprising: detecting a fault in the dc power transmission and reconfiguring each power converter to a fault blocking mode drinving the dc fault current towards zero; locating the fault and isolating a faulty portion from a healthy remaining portion; reconfiguring one of the power converters designated as a re-energising power converter from the fault blocking to re-energise the healthy remaining portion; and detecting a rise in the voltage level in the healthy remaining portion above a threshold level and reconfiguring the remaining power converter connected with the healthy remaining portion from the fault blocking to the normal power transmission.. . ... General Electric Technology Gmbh

01/11/18 / #20180012715

Circuit breaker equipped with an extensible exhaust cover

The invention relates to a medium-, high-, or very high-voltage circuit breaker, comprising at least one arc-control chamber and an outer casing in which the arc-control chamber is arranged. The circuit breaker includes a discharge cap (40) forming a portion of the outer wall external of the arc-control chamber (12), the discharge cap being situated inside the outer casing and internally defining a gas-flow chamber (31). ... General Electric Technology Gmbh

01/11/18 / #20180008929

System for sulphur removal from a flue gas

A system for sulphur removal from a flue gas. The system includes an absorber, a reaction tank and a buffer tank. ... General Electric Technology Gmbh

01/04/18 / #20180005775

Operating mechanism for tripping a voltage circuit breaker

An operating mechanism for tripping a circuit-breaker, the operating mechanism comprising a coil having a first terminal and a second terminal, means for generating a first electric impulse, and means for creating, from the first electric impulse, a second electric impulse delayed from the first electric impulse and applied between the first terminal and the second terminal of the coil, characterized in that the means for creating the second electric impulse comprise a delaying circuit and a switch connected in series with the coil, the delaying circuit having an input connected to an output of the means for generating a first electric impulse and an output which delivers the second electric impulse, said second electric impulse being a command signal of the switch.. . ... General Electric Technology Gmbh

01/04/18 / #20180003075

Supressing vibrations of shafts using adjustable bearings

A bearing configured to actively damp vibration of a shaft in a turbine. In one implementation, the bearing can include actuating members that move in a manner that changes properties of fluid, typically a thin film of lubricant, disposed in the bearing to facilitate rotation of the shaft. ... General Electric Technology Gmbh

01/04/18 / #20180002801

Composite wires for coating substrates and methods of use

A composite wire utilized in connection with forming a resistant coating on a substrate includes a metallic outer sheath and an inner core, the inner core having a total fill weight above 15% total composite wire weight and including less than less 35% by weight of boron carbide in the inner core, and method of making the same.. . ... General Electric Technology Gmbh

12/28/17 / #20170371312

Method of obtaining at least one operating parameter of an electrical substation component

A method of obtaining at least one operating parameter of an electrical substation component. The method comprises: providing the electrical substation component with a machine-readable code, non-human-readable, including the a operating parameter of the electrical substation component, the operating parameter includes a network connection parameter corresponding to the electrical substation component; providing an electronic module able to read the network connection parameter from the machine-readable code, the electrical substation component and the electronic module are in communication with a communications network; configuring the electronic module to read the network connection parameter from the machine-readable code and retrieve the network connection parameter from the machine-readable code; configuring the electronic module to use the network connection parameter retrieved from the machine-readable code to form a direct network connection with the electrical substation component to enable communication between the electronic module and the electrical substation component via a digital communication link.. ... General Electric Technology Gmbh

12/21/17 / #20170363329

Solar receiver having improved heliostat field performance

The present disclosure is directed to a solar receiver having improved heliostat field control. The solar receiver includes a plurality of receiver panels arranged adjacent to one another. ... General Electric Technology Gmbh

12/21/17 / #20170362983

System and method for improving the performance of a selective catalyst reduction system in a heat recovery steam generator

A method for controlling emissions from a power plant having an ammonia injection grid that includes a plurality of ammonia injection points includes the steps of injecting ammonia into a flow of exhaust gas at an injection location, the injection of ammonia defining a spatial distribution of ammonia across an exhaust gas flowpath, measuring at least one parameter of the exhaust gas downstream from the injection location, comparing a measured value for the at least one parameter of the exhaust gas to a threshold value for the at least one parameter and, if the measured value for the at least one parameter exceeds the threshold value for the at least one parameter, automatically modifying the spatial distribution of ammonia injection across the exhaust gas flowpath.. . ... General Electric Technology Gmbh

12/21/17 / #20170361328

System, method and apparatus for upgrading a pulverizer

A method of upgrading a vertical spindle pulverizer includes the steps of removing a cover from a journal opening in a housing of the pulverizer to access a grinding zone of the pulverizer, removing a first journal assembly having a toroidal grinding roll from the pulverizer through the journal opening, removing a plurality of toroidal table segments from a grinding table of the pulverizer, installing a plurality of inclined bull ring segments on the grinding table, installing a second journal assembly having a conical grinding roll in the pulverizer, and replacing the cover over the journal opening. The inclined bull ring segments are configured to register with a grinding surface of the conical grinding roll.. ... General Electric Technology Gmbh

12/14/17 / #20170357058

System, method and apparatus for adjusting a flame scanner

A flame scanner includes a lens barrel assembly defining a generally hollow body having a first end and a second end, and an opening formed in the first end, a lens positioned adjacent to the second end, and a fiber optic cable receivable through the opening in the first end, the fiber optic cable having a distal end. A field of view of the flame scanner is selectively adjustable by varying a position of the distal end of the fiber optic cable with respect to the lens.. ... General Electric Technology Gmbh

12/14/17 / #20170356643

System and method for increasing the concentration of pulverized fuel in a power plant

A pre-ignition conduit for a pulverized fuel nozzle includes a duct having first and second opposing end portions, the first end portion configured to face an outlet of an igniter. The conduit further includes a cone-shaped concentrator for collecting and forwarding pulverized fuel into the duct for ignition, the cone-shaped concentrator being secured to the first end portion and located between the outlet of the igniter and the duct. ... General Electric Technology Gmbh

12/14/17 / #20170356068

Ni-base superalloy composition and method for slm processing such ni-base superalloy composition

A ni-base superalloy composition to be used for powder-based additive manufacturing (am) technology, such as selective laser melting (slm) or electron beam melting (ebm). The cracking susceptibility during an am process is considerably reduced by controlling the amount of elements, especially hf, that form low-melting eutectics.. ... General Electric Technology Gmbh

12/14/17 / #20170355047

System and method for assembling a heat exchanger

A method of assembling a heat exchanger includes the steps of fluidly connecting a plurality of first heat exchanger tubes to a first connecting tube portion at an assembly location to form a first subassembly, fluidly connecting a plurality of second heat exchanger tubes to a second connecting tube portion at the assembly location to form a second subassembly, transporting the first subassembly and the second subassembly from the assembly location to an installation location, and connecting the first subassembly to the second subassembly at a single connection point between the first connecting tube portion and the second tube connecting portion.. . ... General Electric Technology Gmbh

12/14/17 / #20170355046

System, method and apparatus for aligning tubes of a heat exchanger

An apparatus for aligning tubes of a heat exchanger includes a generally planar body having an insertion end and an actuator end, a first driving member received by the body and extending between the insertion end and the actuator end, the first driving member being movable axially with respect to the body, and a first biasing member operatively connected to the first driving member. The first driving member is actuatable to move the first biasing member between a clearance position in which the first driving member lays generally flat within respect to the body, and an extended position in which the first biasing member extends generally perpendicular from the body.. ... General Electric Technology Gmbh

12/14/17 / #20170354927

Boiler and device for selective non catalytic reduction

The boiler (1) has side tubed walls (2) enclosing an inner space (3) and a device for selective non catalytic reduction (7). The device for selective non catalytic reduction (7) has a lance (8) carrying a hose (9) having at least a nozzle (10) and a hose drive mechanism (11) for driving the hose within the lance. ... General Electric Technology Gmbh

12/14/17 / #20170354926

Integrated desulfurization and carbon dioxide capture system for flue gases

An integrated system for capturing carbon dioxide and sulfur oxides from a flue gas stream comprising a desulfurization chamber to remove sulfur-type pollutants and a carbon dioxide capture system in fluid communication with the desulfurization chamber; where the carbon dioxide capture system is operative to absorb carbon dioxide from the flue gas stream.. . ... General Electric Technology Gmbh

12/07/17 / #20170353026

Improvements in or relating to circuit interruption apparatuses

. . A circuit interruption apparatus, for an electrical network, comprising a circuit interruption device that is operatively connectable at a source side to a source of the electrical network and at a back side to a load of an electrical network. The circuit interruption device when closed permits and when open inhibits the current flow between the source side the back side,. ... General Electric Technology Gmbh

12/07/17 / #20170350588

Apparatus and method for welding a waterwall panel

A waterwall panel welding apparatus is provided. The apparatus includes an inlet assembly, a welding assembly, an outlet assembly, and a heating system. ... General Electric Technology Gmbh

12/07/17 / #20170350507

Device for actuating a rotating shaft selected from a plurality of parallel rotating shafts

A device for actuating a rotating shaft selected from a plurality of parallel rotating shafts, comprising a driving shaft supported and actuated by corresponding rotation means, which is provided with a driving gear for the transmission of torque, a plurality of driven shafts each one of which is provided with a corresponding driven gear that is designed to be meshed with the driving gear, the driven gears being arranged on the respective driven shaft in an axial position that is offset with respect to the other driven gears, the driving gear being capable of performing a translational movement axially with means of translational motion for alternate meshing with one of the driven gears, the device further comprising means of prevention of rotation for the driven shafts whose driven gear is not meshed with the driving gear.. . ... General Electric Technology Gmbh

11/30/17 / #20170346384

Semiconductor switching circuit

A semiconductor switching circuit, for use in a hvdc power converter, comprising: a main semiconductor switching element, including first and second connection terminals between which current flows from the first connection terminal to the second connection terminal and an auxiliary semiconductor switching element electrically connected between the first and second connection terminals thereof, and a control unit, operatively connected to auxiliary semiconductor switching element and programmed to control the switching element to create an alternative current path between the first and second connection terminals by at least two of: a fully-on mode in which the switching element is operated at its maximum rated base current or gate voltage; a pulsed switched mode in which the switching element is turned on and off; and an active mode in which the switching element is operated with a continuously variable base current or gate voltage.. . ... General Electric Technology Gmbh

11/30/17 / #20170345598

Improvements in or relating to circuit interruption devices

A trip apparatus for a circuit interruption device that comprises a coil operatively connectable to a circuit interruption device. The coil is configured to selectively operate the circuit interruption device to interrupt when a current flowing through the circuit interruption device exceeds a threshold. ... General Electric Technology Gmbh

11/23/17 / #20170338067

Electrical tripout device integrating a circuit breaker and an isolator

A current-interrupter device (1) comprising a circuit breaker (2) including a first stationary conductive support (4) carrying both a stationary arcing contact (14) and a movable arcing contact (16), and also carrying a movable permanent contact (17), the movable arcing contact (16) and the movable permanent contact (17) being electrically connected to the first stationary support (4), and a disconnector (3) including a second stationary conductive support (6) carrying a disconnector contact (18), and wherein: the movable disconnector contact (18) is in contact with the stationary arcing contact (14) when it is closed and spaced apart from the stationary arcing contact (14) when it is open; and the movable disconnector contact (18) and the movable permanent contact (17) are connected to each other when they are both in the closed position, and they are spaced apart from each other when one or the other is open.. . ... General Electric Technology Gmbh

11/23/17 / #20170333874

System and method for reducing carbon dioxide emissions from a flue gas generated via combusting a fossil fuel

A system for reducing carbon dioxide emissions from a flue gas generated via combusting a fossil fuel is provided. The system includes a calcination chamber and a sealing-purger. ... General Electric Technology Gmbh

11/23/17 / #20170333829

System and method for reducing carbon dioxide emissions from a flue gas generated via combusting a fossil fuel

A system for reducing carbon dioxide emissions from a flue gas generated via combusting a fossil fuel is provided. The system includes a carbonator and a classifier. ... General Electric Technology Gmbh

11/16/17 / #20170331393

Start-up of hvdc converters

A method and apparatus for start-up of a voltage source converter (vsc) which is connected to an energized dc link (dc+, dc−). The vsc is connected to a first ac network via a first transformer and an ac isolation switch, the ac isolation switch being coupled between the first transformer and the ac network. ... General Electric Technology Gmbh

11/16/17 / #20170331281

Dc electrical network

A dc electrical network comprising dc terminals operatively connectable to a converter; and dc transmission paths arranged to interconnect the dc terminals, and including a dc power transmission medium and a switching apparatus. The dc network further including: an active power electronic device connected in at the dc transmission paths, the active power electronic device; a detector configured to detect faults in the dc transmission paths; and a control unit programmed to operate the active power electronic device to vary an apparent impedance of a faulty dc transmission path to force a current flowing in the faulty dc transmission path to reduce to a target current level, and operate the switching apparatus to block current from flowing in the faulty dc transmission path when the current flowing in the faulty corresponding dc transmission path is reduced to the target current level.. ... General Electric Technology Gmbh

11/16/17 / #20170326569

System and method for regulating the viscosity of a fluid prior to atomization

A system for regulating the viscosity of a fluid prior to atomization includes a temperature controller configured to adjust a temperature of a fluid flowing in a conduit prior to atomization of the fluid by an atomizer fluidly connected to the conduit and a sensor in communication with the temperature controller such that the sensor can provide an indicator to the temperature controller of a viscosity of the fluid flowing in the conduit prior to atomization. An adjustment to the temperature of the fluid by the temperature controller is based at least in part on the measured viscosity indicator of the fluid, a target atomization-viscosity of the fluid, and a coking temperature of the fluid.. ... General Electric Technology Gmbh

11/16/17 / #20170326475

Industrial oil degassing system and method

An industrial oil degassing system and method to remove gas from an industrial machine oil. Described is an industrial oil degassing system, including a pressure tank under pressure to receive oil charged with gas, a separation tank with an atmospheric pressure to separate gas from the oil, and a seal oil tank with an atmospheric pressure to receive the degassed oil from the separation tank. ... General Electric Technology Gmbh

11/09/17 / #20170324247

Current flow control assembly

A current flow control assembly, for controlling current flow in an electrical network of interconnected electrical elements, having: current flow controllers, each current flow controller connectable to at least one of the interconnected electrical elements, and being configured to control current flow in at least one of the interconnected electrical elements within a current flow control range; a control unit in communication with each of the current flow controllers, wherein the control unit is configured to: select at least one of the current flow controllers with a flow control range that corresponds to one or more current flow control requirements of the electrical network; and operate the selected current flow controller to control current flow in at least one of the interconnected electrical elements to control current flow in the electrical network in accordance with the current flow control requirement of the electrical network.. . ... General Electric Technology Gmbh

10/26/17 / #20170307688

Synthetic test circuit

A synthetic test circuit, comprising: a device under test including a chain-link converter under test, comprising a plurality of test modules, each test module including module switches connected with an energy storage device; a terminal connected to the device under test; at least one injection circuit operably connected to the terminal, the injection circuit including a source, the source including a source chain-link converter, which includes a plurality of source modules, each source module including a plurality of module switches connected with at least one energy storage device; a controller being configured to operate each source module to selectively bypass the corresponding energy storage device and insert the corresponding energy storage device into the corresponding source chain-link converter so as to generate a voltage across the source chain-link converter and thereby operate the injection circuit to inject a current waveform and/or a voltage waveform into the chain-link converter under test.. . ... General Electric Technology Gmbh

10/05/17 / #20170288382

Supporting structure for contacts of high-voltage disconnectors

This invention relates to a supporting structure for contacts of high-voltage disconnectors, characterized in that it comprises at least one vertical central composite insulator that is stayed by means of at least two inclined insulators, each of which is coupled at a first end to said at least one central composite insulator and at the second opposite end to a base body for said at least one vertical central composite insulator.. . ... General Electric Technology Gmbh

10/05/17 / #20170284660

System, method and apparatus for controlling the flow direction, flow rate and temperature of solids

An apparatus for controlling flow of a material includes an inlet for receiving the material from a source, and a seal mechanism connected to the inlet, the seal mechanism having a fluidizing bed configured to receive the material from the inlet, a first discharge passageway and a second discharge passageway. The fluidizing bed includes a first transport zone associated with the first discharge passageway and a second transport zone associated with the second discharge passageway, wherein the first and second transport zones are configured to receive transport gas from a transport gas source. ... General Electric Technology Gmbh

10/05/17 / #20170283191

System and method and apparatus for maintaining a pressure balance in a solids flow loop and for controlling the flow of solids therethrough

A system includes a standpipe for receiving a flow of solids therethrough, the standpipe having at least one inlet configured to receive a gas for decreasing a solids-to-gas ratio of the flow, a sealpot having an inlet fluidly coupled to the standpipe and an outlet fluidly coupled to a riser, the sealpot being configured to fluidize the solids received from the standpipe and to transport the solids to the riser, and a drain device fluidly coupled to an outlet in the standpipe, the outlet being located upstream from the inlet of the sealpot. The drain device is configured to remove the excess gas from the flow of solids within the standpipe to increase the solids-to-gas ratio of the flow prior to the solids entering the sealpot.. ... General Electric Technology Gmbh

09/21/17 / #20170268767

System and method for supporting a boiler load

A support system for a boiler includes a plurality of support assemblies arranged intermediate a ground surface and the boiler. Each of the support assemblies include a first support leg having a lower end operatively connected to the ground surface and an upper end operatively connected to the boiler, a second support leg having a lower end operatively connected to the ground surface and an upper end operatively connected to the boiler, and at least one spring operatively connected to the first support leg and the second support leg and extending generally horizontally between the first support leg and the second support leg.. ... General Electric Technology Gmbh

09/21/17 / #20170268384

Combined cycle power plant and method for operating such a combined cycle power plant

A water/steam system for a combined cycle power plant and related method for operating said system are provided. The system comprises a heat recovery steam generator providing a flue gas stream path for extracting heat from a flue gas stream exhausted from a gas turbine, the heat recovery steam generator having a low pressure section including a low pressure evaporator arranged along the flue gas stream path for generating low pressure steam at a low pressure input level for a main input of a low pressure steam turbine. ... General Electric Technology Gmbh

09/21/17 / #20170268379

System and method for heating components of a heat recovery steam generator

A system for heating one or more components of a heat recovery steam generator that includes a heat-transferring conduit that fluidly connects a high-pressure section of a flow path to a low-pressure section of the flow path. The flow path is defined by a housing of the heat recovery steam generator and configured to direct a heat-containing medium. ... General Electric Technology Gmbh

09/14/17 / #20170264208

Improvements in or relating to electrical assemblies for voltage source sub-modules

An electrical assembly for a voltage source sub-module is provided, which comprises a first semiconductor device module which includes a plurality of first semiconductor devices. The electrical assembly also includes an energy storage device which in turn includes a plurality of energy storage sections that are configured to control the magnitude of a current portion flowing through each first semiconductor device. ... General Electric Technology Gmbh

09/14/17 / #20170264183

Improvements in or relating to the control of converters

A method is provided for controlling a converter including at least one converter limb corresponding to a respective phase of the converter, the or each converter limb extending between first and second dc terminals and including first and second limb portions separated by an ac terminal, each limb portion including a converter arm, at least one of the limb portions including at least one director arm, the or each director arm including a director switch. The method comprises the steps of obtaining a respective ac current demand phase waveform for the or each converter limb, and a dc current demand, both of which the or each converter limb is required to track; determining a limb portion current; timing the current ramp profile of the determined director arm current for the director arm or the one of the director arms; and providing a limb portion voltage source for each limb portion.. ... General Electric Technology Gmbh

09/14/17 / #20170261275

System and method for improving the performance of a heat recovery steam generator

A heat recovery steam generator includes a gas inlet for receiving a flow of exhaust gas from a gas turbine, a gas outlet opposite the gas inlet, at least one heat exchanger intermediate the gas inlet and the gas outlet, the heat exchanger having a plurality of heat transfer surfaces configured to transfer heat from the exhaust gas to a fluid within the heat exchanger, and a valve associated with the heat exchanger and configured to regulate a flow of the fluid through the heat exchanger. The valve is controllable from an open position to a closed position to decrease the flow of the fluid through the heat exchanger in order to effect an increase in a temperature of the heat transfer surfaces of the heat exchanger to clean the heat transfer surfaces.. ... General Electric Technology Gmbh

09/14/17 / #20170259209

System and method for improving the performance of a selective catalyst reduction system in a heat recovery steam generator

A heat recovery steam generator includes a gas inlet for receiving a flow of exhaust gas from a gas turbine, a gas outlet opposite the gas inlet and configured to transport the flow of exhaust gas to atmosphere, and a sorbent injection device intermediate the gas inlet and the gas outlet, the sorbent injection device including at least one injection port configured to inject a sorbent into the flow of exhaust gas. The sorbent is configured to react with an acid gas within the flow of exhaust gas to neutralize the acid gas and inhibit the formation of salt deposits.. ... General Electric Technology Gmbh

09/07/17 / #20170256373

Internal tulip sleeve of the female arcing contact of a high voltage electric circuit breaker

An internal tulip sleeve for the female arcing contact of a high voltage circuit breaker. According to the invention, this sleeve comprises a body of non-magnetic steel or of copper-tungsten alloy, this body comprising an internal face covered with copper.. ... General Electric Technology Gmbh

09/07/17 / #20170254227

System and method for regulating condensation of flue gas in a steam generator

A system for regulating condensation of a flue gas in a steam generator is provided. The system includes a temperature controller and a flue gas analyzer. ... General Electric Technology Gmbh

08/31/17 / #20170248493

System and method for monitoring bearing health in a journal assembly

A system for monitoring the health of one or more bearings of a journal assembly is provided. The system includes a split spacer, one or more vibration sensors, a speed sensor, and a controller. ... General Electric Technology Gmbh

08/31/17 / #20170248037

System and method for preheating a heat recovery steam generator

A system for preheating a heat recovery steam generator is provided. The system includes a tank and a heat exchanger. ... General Electric Technology Gmbh

08/31/17 / #20170246644

System, method and apparatus for controlling the flow distribution of solid particles

A turret includes a generally frusto-conical shaped body and a plurality of static vanes arranged interior to the body and extending inwardly from an interior sidewall of the body. The vanes are configured to guide a swirling flow of solid particles as they enter the body, and to divide the swirling flow into a plurality of controlled flows that are communicated to a plurality of coal outlet pipes.. ... General Electric Technology Gmbh

08/31/17 / #20170246643

System, method and apparatus for controlling the flow distribution of solid particles

A turret includes a generally frusto-conical shaped body and a plurality of static straightening vanes arranged interior to the body, the vanes dividing the body into a plurality of substantially equal sections. The vanes are configured to straighten a swirling flow of solid particles as they enter the body, and to divide the swirling flow into a plurality of straightened flows that are communicated to a plurality of coal outlet pipes.. ... General Electric Technology Gmbh

08/31/17 / #20170246642

System, method and apparatus for controlling the flow distribution of solid particles

A deflector ring includes a generally annular body, and a plurality of static straightening vanes arranged interior to the body, the vanes dividing the body into a plurality of substantially equal sections. The vanes are configured to straighten a swirling flow of solid particles as they enter the annular body, and to divide the swirling flow into a plurality of straightened flows that are communicated to a turret positionable above the deflector ring.. ... General Electric Technology Gmbh

08/17/17 / #20170237374

Generator control device and method

The present disclosure relates to a generator control device and a method to control the output power of at least one generator connected to an electric grid. It is an object of the invention to provide a fast solution to counteract electric grid frequency instabilities. ... General Electric Technology Gmbh

08/17/17 / #20170234541

Burner for a can combustor

A burner for a combustion chamber of a gas turbine with a mixing and injection device, which includes a limiting wall that defines a gas-flow channel and at least two streamlined bodies. Each streamlined body extends in a first transverse direction into the gas-flow channel, and has two lateral surfaces that are arranged essentially parallel to the main-flow direction. ... General Electric Technology Gmbh

08/17/17 / #20170234462

Dissimilar metal connection and method for operating such a dissimilar metal connection

A dissimilar metal connection arrangement comprising a dissimilar metal connection between a first member made of a first metal and having a first end, and a second member made of a second metal different from said first metal with regard to its metallurgical behavior, and having a second end, wherein the first end of the first member is fixedly connected to the second end of the second member. An increased lifetime of the connection is achieved by arranging a heating means at said dissimilar metal connection for controlled heating of said dissimilar metal connection.. ... General Electric Technology Gmbh

08/17/17 / #20170234162

Steam turbine inner casing component and repair method therefor

Embodiments of the present invention relate to an inner casing component configured to form part of a steam flow path of a last stage of an axial flow steam turbine, the steam turbine inner casing component having a base made of nodular cast iron and a coating, on the base, in a region exposed to the steam flow path, consisting of manganese austenitic steel.. . ... General Electric Technology Gmbh

08/03/17 / #20170219640

Apparatus for determination of the frequency of an electrical signal and associated methods

An apparatus for determining a measure of the frequency of an electrical signal is provided. The apparatus is configured to, based on a plurality of samples of the electrical signal, determine a hilbert transformation to obtain a value for each of the samples of the electrical signal for use as an imaginary representation of each of the samples of the electrical signal and combine each said imaginary representation with a corresponding real representation of the samples of the electrical signal to form a complex representation of the electrical signal; perform a fourier transform on each said complex representation of the samples of the electrical signal and determine a phase angle therefrom; and determine a measure of the frequency of the electrical signal based on a derivative of the phase angle with respect to time.. ... General Electric Technology Gmbh

08/03/17 / #20170219527

Apparatus and method for determining the integrity of a tube

An apparatus for determining the integrity of a tube is provided. The apparatus includes: a body having an extension mechanism and configured to be inserted into the tube; and a flexible eddy current sensor including a flexible housing coupled to the body via the extension mechanism, and one or more coils disposed in the flexible housing. ... General Electric Technology Gmbh

07/27/17 / #20170214302

Conductor bar stripping tool and method

The present disclosure relates to a stripping tool, a method to strip a conductor bar, and an arrangement for stripping a conductor bar from a slot of a core of an electric machine. The disclosure provides a device and a method to facilitate the removal of a conductor bar out of a slot of an electric machine. ... General Electric Technology Gmbh

07/27/17 / #20170214301

Method and device for manufacturing a laminated stator code

The method for manufacturing a stator of an electric machine includes providing a lamination element extending over an annular sector, horizontally moving the lamination element towards a fitting zone, then angularly regulating the lamination element position, and connecting the lamination element to other lamination elements to define the stator.. . ... General Electric Technology Gmbh

07/27/17 / #20170211426

System, method and apparatus for minimizing heat loss in a heat recovery steam generator

A damper assembly for minimizing heat loss through an exhaust includes a housing mounted within the stack and a bladder received within the housing. The bladder is selectively movable between a first position in which the bladder is deflated and received within the housing, and second position in which the bladder is positioned outside the housing and inflated such that a peripheral surface of the bladder contacts an interior sidewall of the stack to create a gas seal.. ... General Electric Technology Gmbh

07/27/17 / #20170211425

System, method and apparatus for minimizing heat loss in a heat recovery steam generator

A damper assembly for minimizing heat loss through an exhaust stack includes a housing mountable within the stack and an umbrella received within the housing. The umbrella is selectively movable between a first position in which the umbrella is received within the housing, and second position in which the umbrella is extended from the housing such that a peripheral edge of the umbrella is in close association with an interior sidewall of the exhaust stack to minimize a flow of fluid past the umbrella and out of the stack.. ... General Electric Technology Gmbh

07/20/17 / #20170207628

Method for operating a power plant, and power plant

A method for operating a power plant is disclosed. The method comprises providing at least one shaft power thereby providing a total shaft power, driving at least one generator thereby providing a total electric power output, providing a first share of the total electric power output to a grid as a grid power output, and providing a second share of the total electric power output to at least one power consumer. ... General Electric Technology Gmbh

07/20/17 / #20170207621

Electrical bypass apparatus

An electrical bypass apparatus is provided, which comprises first and second terminals for connection across an electrical component; an electrically-triggered bypass switch being switchable to form a short circuit across the first and second terminals; and a first control circuit connected between the first and second terminals. The first control circuit includes mutually coupled first and second windings, the first winding being isolated from the second winding. ... General Electric Technology Gmbh

07/20/17 / #20170207471

Fossil fuel power plant with integrated carbon separation facility

As integrated fossil fuel power plant and a method of operating the power plant is provided. The integrated fossil fuel power plant includes a gas turbine arrangement and a carbonate fuel cell having an anode side and a cathode side. ... General Electric Technology Gmbh

07/20/17 / #20170207044

Disconnector for electrical lines and systems with high current and high short-circuit value

A disconnector is provided for electrical lines with high current and high short-circuit value, comprising two mutually spaced fixed structures, each for connection to a respective portion of an electrical line, and a movable connection assembly, which is supported by a first one of the two fixed structures with means for the movement of the movable connection assembly toward the second one of the two fixed connection structures. Each one of the fixed connection structures comprises a tubular jacket, for support and conduction, which supports at one end, annular contact elements arranged for movable coupling with a corresponding moving contact of the movable connection assembly, and at the opposite end, couplings for connection to the corresponding portion of electrical line. ... General Electric Technology Gmbh

07/20/17 / #20170204729

Gas turbine blade and manufacturing method

A blade for a gas turbine is described, the blade comprising a trailing edge and a trailing edge cooling channel extending from a first upstream end to a second downstream end, in which the width of the trailing edge cooling channel in the direction perpendicular to the camber line of the blade varies and the narrowest width in the trailing edge cooling channel is at the first upstream end, so as to provide a blade where the trailing edge can be removed with a minimal change or no change in the cooling flow capacity through the trailing edge cooling channel. Related methods are also described.. ... General Electric Technology Gmbh








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