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.