Method and apparatus for use in earth-fault protection

    公开(公告)号:US11831146B2

    公开(公告)日:2023-11-28

    申请号:US16951377

    申请日:2020-11-18

    Applicant: ABB Schweiz AG

    CPC classification number: H02H3/165 G01R31/52 H02H9/08

    Abstract: A method and an apparatus for use in an earth-fault protection in a three-phase electric network, the apparatus configured to detect a phase-to-earth fault in the three-phase electric network, to determine for each of the three phases of the three-phase electric network a phase current during the detected phase-to-earth fault or a change in the phase current due to the detected phase-to-earth fault, to determine an estimate of an earth-fault current on the basis of the determined phase currents or on the basis of the determined changes in the phase currents, to determine, if the estimate of the earth-fault current represents an actual earth-fault current or an apparent earth-fault current, and to determine, in response to determining that the estimate of the earth-fault current represents the actual earth-fault current, that the estimate of the earth-fault current is valid.

    Arc apparatus for an air insulated switchgear

    公开(公告)号:US11824329B2

    公开(公告)日:2023-11-21

    申请号:US17384828

    申请日:2021-07-26

    Applicant: ABB Schweiz AG

    CPC classification number: H02B13/025 H02B13/035 H02H9/02

    Abstract: An arc mitigation apparatus for an air insulated switchgear includes: a flap; a switch; and a control mechanism. The flap is installable in a wall of a compartment of a medium voltage switchgear. When the flap is installed in the wall of the compartment of the medium voltage switchgear, the flap permits when open air and/or gas passes through the flap from inside the compartment to outside the compartment. When the flap is installed in the wall of the compartment of the medium voltage switchgear, the flap is movable from a closed position to an open position due to a pressure difference between an inside of the compartment and an outside of the compartment. The switch activates based on movement of the flap. The control mechanism sets a flap threshold pressure for the flap with respect to the pressure difference that will move the flap.

    CONTROL METHOD, AND CONTROL SYSTEM FOR A SUBSTATION

    公开(公告)号:US20230369853A1

    公开(公告)日:2023-11-16

    申请号:US18195889

    申请日:2023-05-10

    Applicant: ABB Schweiz AG

    CPC classification number: H02J3/0012 H02J13/00034

    Abstract: A technique for a control method and a control system in a substation is provided. The control system includes a substation feeder, an intelligent electronic device, IED, a merging unit, and BUS network connecting the IED and the merging unit. The control method includes providing measurement signals by the substation feeder to the merging unit, transmitting, by the merging unit, measurement data based on the measurement signals of the substation feeder to the IED via the BUS network, identifying, by the IED, a fault condition based on the measurement data, transmitting, by the IED, a conditional control command to the merging unit via the BUS network, determining, by the merging unit, whether the condition of the conditional control command is met, and if so initiating, by the merging unit, the control measure of the substation feeder circuit.

    Electric machine
    314.
    发明授权

    公开(公告)号:US11817743B2

    公开(公告)日:2023-11-14

    申请号:US17241491

    申请日:2021-04-27

    Applicant: ABB Schweiz AG

    CPC classification number: H02K1/185 H02K5/24 H02K2213/03

    Abstract: An electric machine including a stator and a frame, the stator is supported with support necks on the frame in at least two axially spaced support locations. The support locations include a first group of support necks and a second group of support necks. The support necks in the first group are positioned in connection with a vertical centre plane. The second group includes two side support necks positioned opposite to each other at an angular distance above or below a horizontal centre plane. The angular distance is defined by a first angle which is determined in degrees by the formula α1=(90/P)±(⅕)*(90/P), where P is the number of poles of the electric machine and P>2.

    System and Method for Determining at Least One Calculated Process Parameter of a Fluid in a Pipe

    公开(公告)号:US20230358585A1

    公开(公告)日:2023-11-09

    申请号:US18312909

    申请日:2023-05-05

    Applicant: ABB Schweiz AG

    CPC classification number: G01F1/6884 G01D21/02 G01K7/427 G01L1/2287

    Abstract: A system for determining at least one calculated process parameter of a fluid in a pipe includes a data interface receiving nominal process parameters, which relate to nominal parameters of a process that relates to the fluid in the pipe; an invasive temperature sensor that determines a fluid temperature; a reference temperature sensor disposed outside of the pipe for determining a reference temperature; a surface temperature sensor disposed at a surface of the pipe for determining a surface temperature; a process model that determines a process parameter by using the reference temperature, the surface temperature, the received nominal process parameters, and the determined fluid temperature.

    APPARATUS AND METHOD OF OPERATING TWISTLOCK AND ASSOCIATED ROBOT

    公开(公告)号:US20230356413A1

    公开(公告)日:2023-11-09

    申请号:US18245094

    申请日:2020-09-28

    Applicant: ABB SCHWEIZ AG

    Inventor: Ye Tian Jibo Yang

    CPC classification number: B25J15/08 B25J11/005

    Abstract: Embodiments of the present disclosure provide an apparatus and a method for operating a twistlock and an associated robot. The apparatus comprises a clamping assembly comprising a plurality of pairs of clamping portions spaced apart by different distances and adapted to engage with different types of twistlocks, respectively; and an operating assembly adapted to drive one of the plurality of pairs of clamping portions to clamp the twistlock and to drive the clamped twistlock to rotate, to allow the clamped twistlock to be mounted on or removed from a container. In this way, the apparatus according to embodiments of the present disclosure can be applied to most types of twistlocks without changing the clamping assembly, thereby improving the operation efficiency and reducing the costs.

    System for Monitoring a Switchgear
    319.
    发明公开

    公开(公告)号:US20230342906A1

    公开(公告)日:2023-10-26

    申请号:US18303645

    申请日:2023-04-20

    Applicant: ABB Schweiz AG

    Inventor: Ralf Gitzel

    CPC classification number: G06T7/0004 G06T5/50 G06T7/136 G06T2207/10048

    Abstract: A system for monitoring a switchgear includes an infrared camera; a processing unit; and an output unit. The camera acquires a first infrared image. The processing unit determines a pixel in the first image with a maximum temperature and uses a second number of pixels to determine a temperature interval. The processing unit sorts the pixels in descending order of temperature to determine a threshold temperature and determines that a hot spot exists in the switchgear using the temperature interval for the first infrared image. The output unit is configured to output an indication of a fault in the switchgear when the determination has been made that a hot spot exists in the switchgear.

    Method and System for Programming a Robot
    320.
    发明公开

    公开(公告)号:US20230330857A1

    公开(公告)日:2023-10-19

    申请号:US18042493

    申请日:2021-08-12

    Applicant: ABB Schweiz AG

    CPC classification number: B25J9/1664

    Abstract: A method and system are provided for programming robots by users without expertise in specialized robot programming languages. In the method, a high-level description is provided by the user to a translator. The translator translates the description into a transformation. A transformer applies the transformation to an existing robot trajectory in order to provide an updated robot trajectory. The updated robot trajectory is then used to operate the robot.

Patent Agency Ranking