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    FEEDER LINE FAULT RESPONSE USING DIRECT CURRENT INTERCONNECTION SYSTEM
    1.
    发明申请
    FEEDER LINE FAULT RESPONSE USING DIRECT CURRENT INTERCONNECTION SYSTEM 审中-公开

    公开(公告)号：WO2020198565A1

    公开(公告)日：2020-10-01

    申请号：PCT/US2020/025157

    申请日：2020-03-27

    Applicant: ABB SCHWEIZ AG ,  PAN, Jiuping

    Inventor： PAN, Jiuping ,  YUAN, Chunming ,  YANG, Xiaobo ,  BERGGREN, Bertil ,  DIJKHUIZEN, Frans ,  SCHAEFFER, David ,  MAJUMDER, Ritwik

    IPC: H02H3/10 ,  H02H3/38 ,  H02H7/26 ,  H02H3/44

    Abstract: The present disclosure relates generally to medium voltage alternating current (MV AC) distribution networks. Isolating a fault in a feeder line of an MV AC distribution network may cause a healthy portion of a feeder line to be disconnected from all power sources. Network control systems may be able to reconnect the healthy portion to another feeder line using controllable switches such as tie switching devices coupled to the end of each feeder line. Existing MV AC distribution networks suffer from a number of shortcomings and disadvantages. There remain unmet needs including increasing reconfigurability following feeder line fault response, preventing subsequent overloads after network reconfigurations, and reducing network downtime for healthy feeder line portions. For instance, conventional distribution networks do not receive power from multiple connected feeder lines after a fault response, risking an overload in a single newly connected feeder line and reducing power transfer ability. In view of these and other shortcomings in the art, there is a significant need for the unique apparatuses, methods, systems and techniques disclosed herein.

    RESTORATION OF FAULT INSULATED FEEDER
    2.
    发明申请
    RESTORATION OF FAULT INSULATED FEEDER 审中-公开

    公开(公告)号：WO2021037357A1

    公开(公告)日：2021-03-04

    申请号：PCT/EP2019/072986

    申请日：2019-08-28

    Applicant: ABB SCHWEIZ AG

    Inventor： MAJUMDER, Ritwik ,  BERGGREN, Bertil ,  SCHAEFFER, David ,  ZHANG, Lidong ,  DIJKHUIZEN, Frans

    IPC: H02J3/08 ,  H02J3/36 ,  H02J3/00 ,  H02H3/06 ,  H02H7/28

    Abstract: A method for restoration of a fault isolation in a medium voltage, MV, network having a plurality of feeders and a plurality of normally open, NO, switches (NO1, NO2, NO3, NO4)possibly in parallel with MV direct current, DC, links (MVDC1, MVDC2, MVDC3, MVDC4)is presented. The method is performed in a control device (1) of the MV network. The method comprises closing (S120) at least two NO switches in parallel with MVDC links of the plurality of NO switches, being connected to a fault isolated feeder of the plurality of feeders of the MV network, and opening (S150) the closed at least two NO switches in parallel with MVDC links except one.A control device, a computer program and a computer program product for restoration of a fault isolation in a MV network are also presented.

    SHORT-CIRCUITING DEVICE
    4.
    发明公开
    SHORT-CIRCUITING DEVICE 审中-公开

    公开(公告)号：EP4131310A1

    公开(公告)日：2023-02-08

    申请号：EP21189115.5

    申请日：2021-08-02

    Applicant: ABB SCHWEIZ AG

    Inventor： SCHAEFFER, David ,  JONSSON, Lars ,  SCHMOELZER, Thomas

    IPC: H01H33/28 ,  H01H33/38 ,  H01H33/59 ,  H01H33/666 ,  H01T4/02 ,  H01T4/12 ,  H01T15/00

    Abstract: A short-circuiting device (14) comprises a triggering circuit (16), an actuating element (30), a stationary electrode (20) and a moveable electrode (22), where the actuating element (30) is moveable between a first retracted position and a first extended position and joined to the moveable electrode (22) for being moved between a corresponding second retracted position, where there is gap of a first distance between the moveable and stationary electrodes (22, 20), and a second extended position, where the gap has a second lower distance, the triggering circuit (16) being configured to trigger a current to start to flow between the electrodes (20, 22) after the actuating element (30) has been actuated to move from the first retracted position and before reaching the first extended position and the current continues to flow in the gap after a first zero crossing and at least until a second zero-crossing.

    DISCONNECTING A SUBSEA AC/AC POWER CONVERTER CELL
    6.
    发明公开
    DISCONNECTING A SUBSEA AC/AC POWER CONVERTER CELL 审中-公开

    公开(公告)号：EP3410595A1

    公开(公告)日：2018-12-05

    申请号：EP17173999.8

    申请日：2017-06-01

    Applicant: ABB Schweiz AG

    Inventor： SCHAEFFER, David ,  LENDENMANN, Heinz ,  DAMAZIO-COELHO, Kefas ,  BLOCH, Richard

    IPC: H02M7/49

    CPC classification number: H02M7/49 ,  H02M2001/325

    Abstract: It is provided an subsea AC/AC power converter cell comprising: a cell input connection; input disconnector switches connected to respective input terminals of the input connection; a cell output connection for providing output AC power of one phase; at least one output disconnector switch connected between terminals of the output connection; a rectifier stage connected between the input disconnector switches and a DC bridge; a capacitor provided at the DC bridge; a synthesis stage connected between the DC bridge and the output disconnector switches, the synthesis stage comprising a plurality of cell switches; a cell controller configured to control the cell switches to provide a sinusoidal voltage on the output connection; and at least one disconnector input for receiving a signal external from the subsea AC/AC power converter cell to control the state of each one of the input disconnector switches and the at least one output disconnector switch.

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