公开(公告)号：US20230420932A1

公开(公告)日：2023-12-28

申请号：US18337784

申请日：2023-06-20

Applicant: ABB Schweiz AG

Inventor： Elisabeth Lindell ,  Johan Nohlert ,  Andrea Bianco ,  Stefan Halén ,  Jesper Magnusson

IPC: H02H9/00 ,  H02H7/04

CPC classification number: H02H9/002 ,  H02H7/042

Abstract: A method of operating a switching device in a system. The method includes monitoring a voltage; operating the system at each of a plurality of system configurations; and, for each of the system configurations and a predetermined same opening angle relative to a reference angle of the monitored voltage, determining a suitable closing angle relative to the reference angle and storing information about the determined suitable closing angle in association with the system configuration in a database. The method then includes, determining a system configuration in the system; at the predetermined same opening angle, opening the switching device; from the database, obtaining a closing angle of the determined suitable closing angles, wherein the system configuration with which the obtained closing angle is associated in the database corresponds to the determined system configuration; and at the obtained closing angle, closing the switching device.

公开(公告)号：US20230124793A1

公开(公告)日：2023-04-20

申请号：US17906058

申请日：2021-02-01

Applicant: ABB Schweiz AG

Inventor： Jesper Magnusson ,  Johan Nohlert

IPC: H02H3/02 ,  H02H7/22

Abstract: A method of operating a Fault Current Limiter Circuit Breaker including a plurality of FLCB modules connected in series, including at least a first module and a second module. Each module includes a plurality of parallel component legs including a mechanical switch leg including a mechanical switch, a semiconductor switch leg including a semiconductor switch, and a Metal Oxide Varistor leg including a MOV. The method includes, when the FLBC is in an open configuration, obtaining an indication that the FLCB should be closed; in response to the obtained indication, closing the semiconductor switch of each of the modules; and, after the closing of the semiconductor switches and while the mechanical switch of the second module remains open, closing the mechanical switch of the first module.

公开(公告)号：US11757276B2

公开(公告)日：2023-09-12

申请号：US17906058

申请日：2021-02-01

Applicant: ABB Schweiz AG

Inventor： Jesper Magnusson ,  Johan Nohlert

IPC: H02H9/08 ,  H02H3/02 ,  H02H7/22

CPC classification number: H02H3/025 ,  H02H7/22

Abstract: A method of operating a Fault Current Limiter Circuit Breaker including a plurality of FLCB modules connected in series, including at least a first module and a second module. Each module has a plurality of parallel component legs including a mechanical switch leg having a mechanical switch, a semiconductor switch leg having a semiconductor switch, and a Metal Oxide Varistor leg having a MOV. The method includes, when the FLCB is in an open configuration, obtaining an indication that the FLCB should be closed; in response to the obtained indication, closing the semiconductor switch of each of the modules; and, after the closing of the semiconductor switches and while the mechanical switch of the second module remains open, closing the mechanical switch of the first module.

公开(公告)号：US20230420933A1

公开(公告)日：2023-12-28

申请号：US18337920

申请日：2023-06-20

Applicant: ABB Schweiz AG

Inventor： Elisabeth Lindell ,  Johan Nohlert ,  Stefan Halén ,  Jesper Magnusson

IPC: H02H9/00 ,  H02H7/04 ,  H01H9/56

CPC classification number: H02H9/002 ,  H02H7/04 ,  H01H9/56

Abstract: A start-up method for reducing inrush current to a transformer when closing a switching device. The switching device includes three single-pole operated current interrupting means. The method includes monitoring a voltage. The method includes, for each of a sequence of iterations: at a same opening angle relative to a reference angle of the voltage, starting an opening sequence of the switching device; at a closing angle relative to the reference angle, which is shifted in relation to the closing angle of all other iterations in the sequence, starting a closing sequence of the switching device; and obtaining an indication of the overall inrush current resulting from the closing. The method includes selecting for future use with the opening angle, the closing angle of one of the iterations in which the overall inrush current is relatively low when compared with the other iterations of the sequence.