公开(公告)号：US10819112B1

公开(公告)日：2020-10-27

申请号：US16366118

申请日：2019-03-27

Applicant: ABB Schweiz AG

Inventor： Jiuping Pan ,  Chunming Yuan ,  Xiaobo Yang ,  Ritwik Majumder ,  Bertil Berggren ,  Frans Dijkhuizen ,  David Schaeffer

IPC: H02J3/00 ,  H02J3/36 ,  H02J3/06

Abstract: Systems, methods, techniques and apparatuses of feeder line fault response are disclosed. One exemplary embodiment is a method for operating an alternating current (AC) distribution network including a first feeder line, a second feeder line, and a third feeder line. The method includes isolating a faulted portion of the first feeder line from a healthy portion of the first feeder line; closing a tie switch coupled between the healthy portion and the second feeder line in response to isolating the faulted portion from the healthy portion; determining the second feeder line is experiencing an overload condition after closing the tie switch; and transferring AC power including transferring AC power using a direct current (DC) interconnection system coupled to the third feeder line effective to remove the overload condition from the second feeder line.

公开(公告)号：US20200212668A1

公开(公告)日：2020-07-02

申请号：US16236889

申请日：2018-12-31

Applicant: ABB Schweiz AG

Inventor： Ritwik Majumder ,  Frans Dijkhuizen ,  Bertil Berggren

IPC: H02H7/26 ,  H02H1/00

Abstract: Unique systems, methods, techniques and apparatuses of fault mitigation are disclosed. One exemplary embodiment is a fault mitigation system for a medium voltage alternating current (MVAC) distribution network including a direct current (DC) link and a control system. The DC link is coupled to a first feeder line and a second feeder line. The control system is structured to determine a first feeder line is deenergized, operate the DC link so as to receive MVAC from a second feeder line and output low voltage alternating current (LVAC) to the first feeder line, operate a plurality of isolation devices, measure the LVAC in response to operating the plurality of isolation devices, determine a fault is isolated from a healthy portion of the first feeder line using the received LVAC measurements, and reenergize the healthy portion of the first feeder line.

公开(公告)号：US10122163B2

公开(公告)日：2018-11-06

申请号：US15542354

申请日：2015-01-30

Applicant: ABB Schweiz AG

Inventor： Ritwik Majumder ,  Bertil Berggren ,  Giovanni Velotto ,  Tomas Jonsson ,  Soubhik Auddy ,  Jenny Josefsson

IPC: H02H7/00 ,  H02H7/22 ,  H02J1/00 ,  H02B1/24

Abstract: The invention concerns a switchyard for interconnecting direct current power networks and a direct current power transmission system comprising such a switchyard. The switchyard comprises a number of interconnected entities comprising at least two main circuit breakers and a number of transfer switches, where each network has two connections to the switchyard, at least one via a transfer switch, each main circuit breaker has four connections in the switchyard, two at each end of the main circuit breaker and at least one via a transfer switch, and each network is joined with every other network via a corresponding path through at least one main circuit breaker as well as via a corresponding path bypassing all main circuit breakers.

公开(公告)号：US11489356B2

公开(公告)日：2022-11-01

申请号：US16460517

申请日：2019-07-02

Applicant: ABB Schweiz AG

Inventor： Bertil Berggren ,  Ritwik Majumder ,  Robert Saers ,  Frans Dijkhuizen

IPC: H02J7/00 ,  H02J3/32 ,  H02J3/36 ,  H02M7/12 ,  H02M1/00

Abstract: One embodiment is a system comprising a medium voltage direct current (MVDC) link electrically coupling a first AC-DC converter and a second AC-DC converter. The first AC-DC converter is electrically coupled with a first alternating current (AC) feeder. The second AC-DC converter electrically coupled with a second AC feeder. A battery charger electrically coupled with the MVDC link via a converterless connection. A first electronic controller is operatively coupled with the first AC-DC converter. A second electronic controller is operatively coupled with the second AC-DC converter. During operation of the battery charger to charge a battery the first electronic controller is configured to control power flow between the first AC feeder and the second AC feeder and the second electronic controller is configured to control the voltage of the MVDC link.

公开(公告)号：US20210006085A1

公开(公告)日：2021-01-07

申请号：US16460517

申请日：2019-07-02

Applicant: ABB Schweiz AG

Inventor： Bertil Berggren ,  Ritwik Majumder ,  Robert Saers ,  Frans Dijkhuizen

IPC: H02J7/00 ,  H02J3/32 ,  H02J3/36 ,  H02M7/12

Abstract: One embodiment is a system comprising a medium voltage direct current (MVDC) link electrically coupling a first AC-DC converter and a second AC-DC converter. The first AC-DC converter is electrically coupled with a first alternating current (AC) feeder. The second AC-DC converter electrically coupled with a second AC feeder. A battery charger electrically coupled with the MVDC link via a converterless connection. A first electronic controller is operatively coupled with the first AC-DC converter. A second electronic controller is operatively coupled with the second AC-DC converter. During operation of the battery charger to charge a battery the first electronic controller is configured to control power flow between the first AC feeder and the second AC feeder and the second electronic controller is configured to control the voltage of the MVDC link.