Abstract: A system for adjusting a depth of a material bed in a pulverizer mill is provided. The system includes a rotatable bowl, an extension ring, and an extension mechanism. The rotatable bowl has a surface operative to support the material bed while the bowl rotates such that particles of the material bed are pulverized against the surface by one or more grinding rollers of the pulverizer mill. The extension ring is disposed about a circumference of the rotatable bowl extending away from the surface and defines a depth of the material bed. The extension mechanism adjusts at least one of the extension ring and the rotatable bowl while the rotatable bowl rotates. Adjusting at least one of the extension ring and the rotatable bowl via the extension mechanism moves the extension ring in relation to the surface so as to adjust the depth of the material bed.

Abstract: 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.

Abstract: 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. The method further includes determining that at least one of the following failure conditions is satisfied: a frame in the pre-configured data stream is lost or delayed, quality of the data in the frame in the data stream is below a first threshold, period of the time associated with the data in the frame in the data stream is below a second threshold, or a health indicator associated with the PIU is below a third threshold. The method further allows identifying at least one redundant frame in the one or more other data streams. If the quality of data in redundant frame is satisfactory, the method proceeds to use the redundant frame for further processing.

Abstract: 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. The ammonia delivery system, the tempering air system, and/or the selective catalyst reduction section are permanently mounted on the first trailer or the second trailer for use at the remote location.

Abstract: 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. The overfire air system may include a number of overfire air windboxes positioned in a horizontal orientation.

Abstract: 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). The PIU includes at least one pre-configured communication port defined by one of a factory setting or a product code order. The at least one PIU is operable to transmit and receive a data stream. The data stream includes at least one dataset. The dataset includes at least one field for sampled values measured at least at one source. The source includes one of a current transformer or a voltage transformer. The dataset can further include a timestamp and a unique identifier associated with the source. The system can include at least one intelligent electronic device (IED) communicatively coupled to the PIU. The IED can be operable to receive the data stream from the PIU and transform the sampled values based on user-defined transformation factors.

Abstract: 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.

Abstract: 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. The monitoring assembly also includes a monitoring apparatus that is configured to detect communication of the communications device with the internet address and following such detection provide an alarm notification including an indication that the industrial control system is connected to the Internet.

Abstract: 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.

Abstract: The invention relates to a steam turbine rotor wherein the inter blade region rotor surface, the feed region rotor surface, the piston region rotor surface and the stress relief groove rotor surface of the rotor are configured and arranged as steam exposed surfaces during normal operation of the steam turbine rotor. The steam turbine rotor has a thermal barrier coating on at least the piston region rotor surface.

Abstract: A mechanical component comprises an internal hollow space and a wall, the wall limiting the hollow space. The mechanical component further comprises a first channel extending inside the wall along a first direction and a second channel extending inside the wall in fluid communication with the internal hollow space and the first channel, serving as a feed channel. A cross-sectional dimension of the first channel is larger than a cross-sectional dimension of the feed channel, and the feed channel tangentially joins into the first channel. A third channel extends inside the wall in fluid communication with the first channel. The third channel extends inside the wall at least essentially parallel to a surface of the wall along at least a part of the extent of the wall in a second direction, and is a near wall cooling channel.

Abstract: 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. Each sensor emits an acoustic signal at a frequency that differs from a frequency of an acoustic signal to be emitted by the other sensor(s) in the fluid flow. A velocity profile and temperature profile for the fluid flow based on the acoustic signals received by the sensors is determined. A measurement system can include sensors and a computer device that can determine a velocity profile and temperature profile for a fluid flow passing through a device based on the acoustic signals received by the sensors. A plant can be configured to implement the method or include an embodiment of the measurement system.

Abstract: 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.

Abstract: A power transmission network including: a variable power source; an AC transmission link for AC power transmission from the variable power source to at least one source side converter; at least one source side converter including: an AC connecting point operably 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 the source side converter or at least one of the source side converters in a frequency damping mode to control an AC voltage at its AC connecting point and thereby damp at least one frequency component at its AC connecting point and/or in the AC transmission link.

Abstract: 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.

Abstract: 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 driving 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.

Abstract: 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. The aggregator component includes a dispatch controller component (DCC) that can employ a defined dispatch algorithm for EVs to facilitate enabling the DCC to perform unidirectional regulation. The DCC can switch EV charging stations on and off using remote switches to meet a system regulation signal. The DCC can use the dispatch algorithm to make determinations regarding which EV to switch using charging priorities, in accordance defined power regulation criterion(s). The aggregator component can reduce communication signals used to adjust dispatch by sending switching signals to only those EVs of the set of EVs that are changing their charging state at a given time.

Abstract: The present application provides a turbine. The turbine may include a rotor, a casing, and a gland seal system positioned between the rotor and the casing. The gland seal system may include a backside seal positioned about the casing.

Abstract: The present disclosure relates to a method, a device, and a computer program for measuring deflections at the stator end winding of an electric machine. Disclosed is a measurement method, a device, and a computer program for measuring vibrations at the stator end winding of an electric machine, with the steps of arranging sensors at the stator end winding at different positions, measuring the vibrations with the sensors, measuring the amplitudes and phases of the radial and tangential vibrations with the sensors, deriving displacements of the stator end winding due to vibrations by means of the measured amplitudes and/or phases of the radial and tangential vibrations.

Abstract: A system for capturing carbon dioxide CO2 by carbonation in a circulating fluidized bed (CFB) carbonation reactor wherein temperature profile is adjusted by recirculation of solid fractions of metal oxide MeO and metal carbonate MeCO3 to the CFB carbonation reactor.