Hitachi Energy Patente

The present disclosure relates to a method for determining a fault section in a series-compensated transmission line, the method comprising: obtaining impedance parameters of the transmission line; obtaining a first voltage and a first current at a first bus; obtaining a second voltage and a second current at a second bus; obtaining a current through an series compensator in a direction towards the first bus, wherein the series compensator is arranged between the first bus and the second bus; and determining a fault section based on: the impedance parameters, the first voltage and the first current, the second voltage and the second current, and the current through the series compensator.

The invention relates to an insulator assembly (12) for a high or medium voltage device comprising:an insulator (16), the insulator (16) being attached to an enclosure (10) of the high or medium voltage device at an outer rim of the insulator (16), the insulator (16) further being configured to accommodate a conductor (18) within a device volume (14) enclosed by the enclosure (10), anda particle shield (22) arranged within the device volume (14), the particle shield (22) being connected to the enclosure (10), and wherein the particle shield (22) at least in part extends parallel to an axial direction (24) of the conductor (18) accommodated by the insulator (16) and circumferentially along the connection of the insulator (16) to the enclosure (10).Furthermore, the invention relates to high or medium voltage device comprising the above insulator assembly (12).

A load cell (1) for measuring forces in a transformer, comprises a measuring portion (4) and a sensor (5) for measuring a deformation of the measuring portion (4), and comprising a load cell housing (2), wherein the measuring portion (4) and the sensor (5) is embedded in the load cell housing (2), wherein the load cell housing (2) comprises at least one supporting structure (13) for limiting a force exerted on the deformable portion (4).

The present disclosure relates to a method of operating a system (10), the system (10) including a first device (12) and a second device (14), the second device (14) being configured to act as a backup device to the first device (12), the first device (12) and the second device (14) each having a service-oriented architecture, SOA. The method includes evaluating, by the system (10), a readiness of the second device (14) to take over operation from the first device (12) based on data which is gathered and/or calculated, while the system (10) is in operation; generating, by the system (10), a readiness signal based on evaluating the readiness of the second device (14) to take over operation from the first device (12); determining, by the system (10), whether to cause and/or allow the second device (14) to take over operation from the first device (12) based on the readiness signal. The present disclosure also relates to an apparatus and a system (10).

The present disclosure relates to a method of operating a system (10), the system (10) including a first device (12) and a second device (14), the first device (12) and the second device (14) each having a service-oriented architecture, SOA. The method includes operating the first device (12), wherein the second device (14) is configured to act as a backup device to the first device (12); at least partially reconfiguring the second device (14), while the first device (12) is being operated; causing the second device (14) to take over operation of the first device (12) after at least partially reconfiguring the second device (14) has been completed.

To perform a battery degradation assessment, a data processing system (20) obtains battery-related data (24) for a battery. The battery-related data (24) comprises time information for several charging and/or discharging operations. The data processing system (20) is operative to determine, based on the time information, a duration for which an operation was carried out, the operation being a charging operation (or a discharging operation. The data processing system (20) is operative to evaluate a cycling aging model (33) to determine a degradation indicator. The cycling aging model (33) comprises a power function of the duration.

A method for producing a first contact layer (5) and a second contact layer (6) on a power semiconductor body (2) is specified, comprising: - providing the power semiconductor body (2), comprising a substrate region (3) with a bottom surface and an epitaxial body region (4) with a top surface facing away from the bottom surface, - applying a first layer on the top surface and applying a second layer on the bottom surface, wherein the first layer comprises a first material comprising titanium, - incorporating a further material into the first layer, wherein the further material comprises phosphorus, and - annealing the power semiconductor body (2) with the first layer comprising the further material and the second layer for a predetermined time interval at a predetermined annealing temperature, such that the first layer and the further material form the first contact layer (5) being a titanium-phosphorus alloy and the second layer forms a second contact layer (6). Furthermore, a power semiconductor device (1) is specified.

A method for edge-cloud computing performed in a system comprising a number of bay clients (23a1, 23b1, 23c1), each bay client belonging to a bay, a plurality of edge devices (22a, 22b, 22c), with thereto belonging edge brokers (22a1, 22b1, 22c1), and a cloud 21. The method comprises a bay client (23a1) publishing primary equipment data to an edge broker (22a1), and the edge broker (22a1) publishing, or making available, the equipment data, in the cloud (21). A primary edge device (22a), from the plurality of edge devices (22a, 22b, 22c), is designated to each bay, and where the edge brokers (22a1, 22b1, 22c1) are bridged to each other, thus making any sensor data published on one edge broker (22a1) available on any other edge broker (22b1, 22c1).

An acoustic panel (1) for an electric appliance (2) with a tank (21) is specified, wherein- the acoustic panel comprises an inner plate (11) facing the tank (21) and an outer plate facing away from the tank (21),- a volume (13) between the inner plate (11) and the outer plate (12) is filled with a filling material (14),- the acoustic panel (1) is configured to be mounted to at least one reinforcement bar (22) on an outer wall (210) of the tank (21) wherein the inner plate of the acoustic panel (1) is located closer to the outer wall (210) of the tank (21) than a surface of the reinforcement bar (22) that faces away from the tank (21), and- the acoustic panel (1) comprises a frequency tuning element (4) configured to tune a specific acoustic dampening frequency band of the acoustic panel (1).Further, an electric appliance (2) and a method of assembling an electric appliance (2) are specified.

The present disclosure relates to a method of preparing a system (10), the system (10) including a first device (12) and a second device (14), the second device (14) being configured to act as a backup device to the first device (12), the first device (12) and the second device (14) having a service-oriented architecture, SOA. The method includes: copying a configuration of the first device (12), the configuration including at least one service of the first device (12); applying at least a portion of the copied configuration of the first device (12) to the second device (14); communicatively connecting the first device (12) and the second device (14); sending data from the first device (12) to the second device (14) to at least partially synchronize the second device (14) with the first device (12). The present disclosure also relates to a method of operating a system (10), an apparatus (30) for synchronizing a first device (12) and a second device (14), and a system (10).

An acoustic panel (1) for an electric appliance (2) with a tank (21) is specified, wherein - the acoustic panel (1) comprises an inner plate (11) facing the tank (21) and an outer plate (22) facing away from the tank (21), - a volume (13) between the inner plate (11) and the outer plate (12) is subdivided into a plurality of chambers (16), - the acoustic panel (1) is configured to be mounted to at least one reinforcement bar (22) on an outer wall (210) of the tank (21) wherein the inner plate (21) of the acoustic panel (1) is located closer to the outer wall (210) of the tank (21) than a surface (220) of the reinforcement bar (22) that faces away from the tank (21). Further, an electric appliance (2) and a method of assembling an electric appliance (2) are specified.

An acoustic panel (1) for an electric appliance (2) with a tank (21) is specified, wherein - the acoustic panel comprises an inner plate (11) facing the tank (21) and an outer plate facing away from the tank (21), - a volume (13) between the inner plate (11) and the outer plate (12) is filled with a filling material (14), - the acoustic panel (1) is configured to be mounted to at least one reinforcement bar (22) on an outer wall (210) of the tank (21) wherein the inner plate of the acoustic panel (1) is located closer to the outer wall (210) of the tank (21) than a surface of the reinforcement bar (22) that faces away from the tank (21). Further, an electric appliance (2) and a method of assembling an electric appliance (2) are specified.

The invention relates to a disconnector switch for a high voltage direct current, HVDC, breaker, comprising a contact device (1) comprising a plurality of fixed contacts (6) arranged in a row defining at least one insulating gap (7) between each two fixed contacts (6) and a plurality of moving contacts (5) arranged in another row and each configured for electrically bridging a respective insulating gap (7) in a closed position, an actuating device (2) comprising an axially extending drive rod (8) fixing the plurality of moving contacts (5) and configured for axially moving the another row of the plurality of moving contacts (5) between an open position and the closed position, and an enclosure (3) comprising the contact device (1) and the actuating device (2) arranged therein and filled with a pressurized insulating gas, whereby a radially extending width (9) of at least one of the plurality of fixed contacts (6) is at least eight times greater than an axial gap extension (10) of the least one insulating gap (7).

An acoustic panel (1) for an electric appliance (2) with a tank (21) is specified, wherein - the acoustic panel (1) comprises an inner plate (11) facing the tank (21) and an outer plate (22) facing away from the tank (21), - a resonator volume (18) is arranged between the inner plate (11) and the outer plate (12), - the acoustic panel (1) comprises an opening (185) coupled to the resonator volume (18), and - the acoustic panel (1) is configured to be mounted to at least one reinforcement bar (22) on an outer wall (210) of the tank (21) wherein the inner plate (21) of the acoustic panel (1) is located closer to the outer wall (210) of the tank (21) than a surface (220) of the reinforcement bar (22) that faces away from the tank (21). Further, an electric appliance (2) and a method of assembling an electric appliance (2) are specified.

A module (10) is provided which comprises a first module part (1) comprising a first electrical conductor (11), first foils (12) and first isolating structures (13) alternated with the first foils (12). The module (10) further comprises a second module part (2) comprising a second electrical conductor (21), second foils (22) and second isolating structures (23) alternated with the second foils (22). The module (10) further comprises a joint region (3) which includes a conductor connector (31), connecting structures (32) and an insulation material (33). The first module part (1) and the second module part (2) are joined together in the joint region (3). The conductor connector (31) mechanically and electrically connects the first electrical conductor (11) to the second electrical conductor (21). Each one of the connecting structures (32) electrically connects one of first foils (12) to one of the second foils (12). The joint region (3) is filled with the insulation material (33) for electrically isolating at least the conductor connector (31) and the connecting structures (32) from each other. Moreover, a method for producing such a module (10) is provided.

The present disclosure relates to a fault detection method for a power transmission line (101) in an alternating current, AC, power transmission system (100). The method comprises:- measuring, at a local position of the power transmission line, measured local voltage phasors and measured local current phasors;- obtaining transmission properties for the power transmission line from the local position to a remote position at a distance from the local position and for associated devices, wherein the transmission properties comprise series parameters, shunt parameters, and the distance from the local position to the remote position;- estimating, for the remote position, estimated remote voltage phasors and estimated remote current phasors on basis of the measured local voltage phasors, the measured local current phasors, and the transmission properties;- receiving, via a communication link (115), data relating to remote phase currents and determining measured remote current phasors;- determining whether a fault has occurred or not on basis of at least one of a combination of the estimated and measured remote current phasors and a combination of the estimated and measured remote voltage phasors; and- determining whether a fault is a true fault or a false fault, including:o comparing a first phase angle and a first magnitude of an estimated remote positive sequence current phasor with a second phase angle and a second magnitude of a measured remote positive sequence current phasor;o determining, on basis of the comparison, whether there is a significant channel asymmetry on the communication link; ando determining that the fault is a false fault if there is a significant channel asymmetry.

A solid-state transformer (1) is specified, comprising- at least two modules (2) having a first side (3) and a second side (4), wherein each module (2) comprises- at least one first converter (5) at the first side (3) and at least two second converters (6) at the second side (4), wherein- the at least one first converter (5) is flux-linked to the at least two second converters (6) by a transformer (6), and wherein- the at least two modules (2) are connected in series at the first side (3),- the at least one first converter (5) is connected to a first winding (9) of the transformer (6), and- each of the at least two second converters (6) is connected to a respective second winding (10) of the transformer (6).Furthermore, a system is specified.

The present disclosure relates to a method for controlling modulation of a power converter comprising determining an output voltage and output current of a power converter, and generating, based on the determined output voltage and output current and using at least one control loop, at least one control signal. The control loop comprises a high level control loop and a low level control loop, wherein the high level control loop and the low level control loop relate to different parameters of the power converter. The method further comprises generating a modulation control signal of the power converter using the control signal and an interfacing function. The disclosure further relates to a corresponding device and system.

A solid-state transformer (1) is specified, comprising - at least two modules (2) having a first side (3) and a second side (4), wherein each module (2) comprises - at least two sub-modules (22), each comprising a first converter (5) at the first side (3) and a second converter (6) at the second side (4), wherein - the first converter (5) is connected to the second converter (6) by a transformer, and - the at least two sub-modules (22) are connected in parallel at the first side (3), and wherein - the at least two modules (2) are connected in series at the first side (3). Furthermore, a system is specified.

The present disclosure relates to a method for controlling modulation of a power converter. The method comprises determining an output voltage and an output current of a power converter; generating, based on the determined output voltage and output current and using at least one model-based control loop, at least one first control signal; generating, based on at least one data-based control loop, at least one second control signal; and generating a modulation control signal using the first and second control signals and an interfacing function. The disclosure further relates to a corresponding device, system and storage medium.

The disclosure provides a fine graded condenser core for a fine graded condenser bushing, the fine graded condenser core comprising: at least one sheet-like electrically insulating spacer wound in a spiral form to form a plurality of layers; a conductive sheet; and natural gas impregnating the at least one sheet-like insulating spacer and the conductive layer.

The invention relates to an apparatus (10) for the generation, the distribution and/or the usage of electrical energy, or a component of such an apparatus, said apparatus comprising a housing (42) enclosing an insulating space (44), said insulating space containing a dielectric insulation medium comprising an organofluorine compound. The apparatus or component comprises an insulation medium interface directly exposed to the insulation medium in the assembled state and the insulation medium interface is at least partially formed by a coating (62). The coating (62) is an epoxy-based coating obtained by curing a curable resin composition containing an epoxy resin and an amine compound as curing agent.

The disclosure provides a fine graded condenser core for a fine graded condenser bushing, the fine graded condenser core comprising: at least one sheet-like spacer wound in a spiral form to form a plurality of layers, wherein the at least one spacer is of a permeable fibrous structure; a conductive sheet; and gas impregnating the at least one sheet-like spacer and the conductive layer.

The disclosure provides a fine graded condenser core for a fine graded condenser bushing, the fine graded condenser core comprising: at least one sheet-like permeable spacer wound in a spiral form to form a plurality of layers; a conductive sheet; and gas impregnating the at least one spacer.

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The present disclosure relates to an air-to-air through-wall bushing (1) comprising a conductor (11), insulation (13) surrounding the conductor, a ventilation inlet at a first end (15a) of the bushing, and a ventilation outlet at a second end (15b) of the bushing. The inlet and outlet allow cooling air to pass through a ventilation channel (14) within the bushing.

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A system (1) for controlling a vacuum interrupter (30) for a power diverter switch comprises a main driving shaft (10) which is configured to drive the control cam (13). The system (1) further comprises the vacuum interrupter (30) which is configured to separate electrical contacts in a vacuum by use of a contact rod (31), and a transmission unit (20) which is configured to transmit the force generated by the main driving shaft (10) to the contact rod (31). The transmission unit (20) comprises a lever mechanism with a plurality of rollable guiding elements (25, 26) and a rotatable forkshaped lever (22), the lever mechanism is coupled to both the control cam (13) and the contact rod (31) of the vacuum interrupter (30) such that a rotation of the control cam (13) generated by the main driving shaft (10) causes a movement of the contact rod (31) due to a guided rotation of the forkshaped lever (22) by means of rolling of the guiding elements (25, 26).