Abstract: A high-voltage bushing has an insulator, which contains an insulating gas and an insulating solid, and an inner conductor which is led through the insulator. A mounting flange is employed for the mounting of the high-voltage bushing on a wall. A sensor, which is arranged on the mounting flange and is configured for the detection of at least one reaction product of the insulating gas and/or of the insulating solid. A corresponding method monitors an operating state of the high-voltage bushing.

Abstract: A component of a subsea connector includes a conductor, an electrically insulating layer and an at least partially electrically conductive layer. A method of assembling the component includes providing the insulating layer radially outward of the conductor; and applying the at least partially conductive layer onto the insulating layer by casting, moulding, compression fitting, or additive manufacturing techniques.

Abstract: A valve arrangement for a steam turbine, wherein, for regulating a fluid flow, the valve arrangement has a hollow cylindrical valve body, which cooperates with a corresponding valve seat. The valve body has a linear contact edge and has multiple compensating bores for pressure equalization. The valve body is moved electromechanically via a coupling element into a stationary element. In addition, the valve arrangement has a housing having a curvature, which extends in the direction of the valve body.

Abstract: An interrupter unit includes a vacuum switch tube and an insulating housing. The insulating housing has an inner surface. The vacuum switch tube is bordered at least partially by an electrically insulating structure material having an outer surface. The insulating housing at least partially surrounds the vacuum switch tube. In operation, inner surface of the insulating housing and outer surface of the vacuum switch tube are separated by an adhesion layer. The inner surface and the outer surface are provided at least partially with an electrically conductive layer such that, in a boundary region between vacuum switch tube and insulating housing, the following layer sequence is directed radially outwards from a switch axis: structure material of vacuum switch tube; outer surface of structure material; conductive layer on outer surface of structure material; adhesion layer; conductive layer on insulating housing; inner surface of insulating housing; volume material of insulating housing.

Abstract: A monitoring arrangement for electrical equipment includes a first sensor for sensing a surface creeping current on a creeping path-lengthening electrically insulating housing of the equipment. A monitoring system includes electrical equipment, the monitoring arrangement, a communication device for transmitting data to a central server device, and a central server device configured to receive and evaluate the data.

Abstract: A heatshield for a gas turbine engine includes a main body having a leading edge, a trailing edge, lateral edges, a first surface and a second surface, the first surface being exposed to a hot working gas in use passing through the gas turbine engine. The main body having an array of cooling channels for conveying a coolant flow, where each cooling channel of the array of cooling channels having a surface. At least one cooling channel of the array of cooling channels includes at least one flow disturbing feature extending from the surface and into the cooling channel.

Abstract: A method for powder-bed-based additive manufacturing of a component, includes setting irradiation vectors for a layer to be irradiated for the component, wherein, irradiation vectors are irradiated below a length of 1 mm in a pulsed irradiation operation; and a pulse frequency below 3 kHz and a scan speed below 250 mm/a are selected. A correspondingly manufactured component is produced.

Abstract: A method for providing CAM manufacturing instructions for the powder-bed-based additive manufacturing of a component wherein a geometry of the component, with a solid material region, a transition region, and a porous component region, is defined on the basis of CAD data. Irradiation parameters for the manufacturing of the component, including an irradiation power, a scanning speed, a scanning pitch, and a layer thickness, are varied within the transition region in such a way as to form a porosity gradient of the structure of the component between the solid material region of the component and the porous component region.

Abstract: A method and testing device for the non-destructive testing of at least partial regions of an insulation of a stator winding of an electric machine, in particular a generator of a high-voltage motor, wherein the non-destructive testing is carried out in situ at the installation site of the electric machine using terahertz measurement technology.

Abstract: A method and device for coating a component wherein the cooling fluid ducts contained in the component have to be reopened following the coating step. The component has a first region and a second region, where the first region includes at least one cooling fluid opening having an adjoining cooling fluid channel and where the first region is to be coated with a coating material which is not to be applied in the second region.

Abstract: A method for controlling a gas turbine, having a measurement step, a prediction step which is carried out after the measurement step, and a control step which is carried out after the prediction step. In the measurement step, a state variable of a combustion within a gas turbine is measured. In the prediction step, a future combustion dynamic is predicted using the measured state variable. In the control step, a control signal is output using the prediction of the future combustion dynamic.

Abstract: Various teachings of the present disclosure include an electrical switching device. The device may include: two contactable conductor elements with adjustable spacing set by a movement apparatus; and a housing defining a switching chamber and at least partially surrounding the at least two conductor elements. The housing has an insulator body and regions of an electrical contact. The housing includes an external refraction-controlling coating with a dielectrically insulating matrix made of a material with a permittivity ?r>/=2.

Abstract: A method determines the overload capacity of a high-voltage device. The method includes creating a load forecast request for a predefined time period, determining an operational state of the high-voltage device by obtaining state parameters, transmitting the load forecast request and the state parameters at a request time to a load-forecasting model, and determining the maximum utilization in the predefined time period by the load-forecasting model, with which the overload capacity of a high-voltage device can be fully exploited. A lifetime consumption of the high-voltage device before the request time is derived from measured values by obtaining an actually consumed lifetime and the actually consumed lifetime is fed to the load-forecasting model as a state parameter. The load-forecasting model then determines the maximum overload capacity depending on the actually consumed lifetime.

Abstract: A safety apparatus for containing a release of energy from a tension stud of a rotor assembly, the safety apparatus includes an elongate member defining a longitudinal axis and at least two arms projecting away from the longitudinal axis of the elongate member. In use, in a first orientation, the elongate member is configured to be connected to a tool apparatus for applying a load energy to the tension stud and the at least two arms of the safety apparatus are configured to overlap with at least part of the tool apparatus in the direction of the longitudinal axis of the elongate member to contain the release of energy therebetween.

Abstract: Compressor rotor structure for turbomachinery, such as a compressor, is provided. Disclosed embodiments can benefit from sealing sleeves that may be arranged to inhibit passage onto respective hirth couplings of process fluid being processed by the compressor. The sealing sleeves may be affixed to adjoining structures (e.g., adjoining impeller bodies) by way of a slip fit connection to one of the adjoining structures and an interference fit connection with respect to the other adjoining structure, which is conducive to a user-friendly assembly of the sealing sleeves with the adjoining structures.

Abstract: A method and a calculation unit for calculating a load skewness result for a determination of service intervals for a turbine, includes: receiving a continuously measured load signal over time, indicating a load of the turbine during operation thereof; determining a load percentage signal over time as a deviation of the received measured load signal from a maximum capacity signal, wherein the maximum capacity signal represents a maximal possible load to be generated at a given time and is calculated from continuously measured sensor signals, representing operating parameters of turbine operation; calculating a load percentage distribution based on the determined load percentage signal; calculating a load skewness factor as a measure of an asymmetry of the calculated load percentage distribution; providing the load skewness result, including the calculated load percentage distribution and the calculated load skewness factor.

Abstract: A rotor assembly, especially for a gas turbine, includes at least a first rotor disc and a second rotor disc, the two rotor discs are arranged directly next to each other. The first rotor disc has a center through hole and the second rotor disc has no center through hole but a rotor disc center. A flow restrictor assembly which restricts the effective flow cross section of the center through hole of the first disc is used to control or to adjust the cooling air through gaps of a form-fitting torque transmitting device.

Abstract: A switching device for a high-voltage circuit breaker includes at least two switches for ascertaining states of apparatuses of the switching device via a monitoring system. The at least two switches are connected together in series and/or in parallel and can be connected together to exactly one input of the monitoring system. A high-voltage circuit breaker includes the switching device and the monitoring system, which is and/or includes a data acquisition, data processing, data storage and/or data transmission unit, in particular with digital-analog and/or analog-digital converters. A method for operating the switching device provides the at least two switches connected in series and/or in parallel, and forwards the state of the apparatuses via an input, in particular via exactly one input of the monitoring system, in the form of electric variables, in particular a voltage.

Abstract: A switching device for opening a current path of a direct-voltage network, which current path has source-side and load-side inductors, the switching device includes at least two switching modules, which are connected in series, each of the switching modules having at least one controllable semiconductor switching element, in parallel with which a series circuit of a resistor and a capacitor is connected. During operation of the switching device in order to open the current path, the controllable semiconductor switching element of at least one of the switching modules is switched into a conductive state with a duty cycle until the energy stored in the inductors has been dissipated, the duty cycle being dependent on the difference between the actual voltage and a target voltage across the semiconductor switching element, the target voltage being calculated at least from the system voltage of the direct-voltage network and the number of switching modules.

Abstract: A modular multilevel converter includes a plurality of submodules, each having at least two electronic switching elements, an electric energy store, two submodule connections, a bypass switch bridging the submodule, and a communication element communicating with a communication apparatus. A method for operating the modular multilevel converter includes ascertaining that the submodules have a defective submodule so that the communication element in the defective submodule does not communicate with the communication apparatus, determining whether a present arm current resulting from an operating point of the modular multilevel converter is below a predetermined threshold value, and generating or amplifying a converter-internal circular current with the defective submodule if the arm current resulting from the operating point is below the predetermined threshold value. A modular multilevel converter is also provided.