- Patent Title: System and method of controlling current-limiters in ring systems
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Application No.: US14688328Application Date: 2015-04-16
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Publication No.: US10074972B2Publication Date: 2018-09-11
- Inventor: Karl-Heinz Hartung , Ralf Bockholt , Volker Grafe
- Applicant: ABB TECHNOLOGY AG
- Applicant Address: CH Baden
- Assignee: ABB Schweiz AG
- Current Assignee: ABB Schweiz AG
- Current Assignee Address: CH Baden
- Agency: Taft Stettinius & Hollister LLP
- Agent J. Bruce Schelkopf
- Priority: EP12007164 20121016
- Main IPC: H02H9/02
- IPC: H02H9/02 ; H02H3/08 ; H02H3/44 ; H02H7/04 ; H02H7/26 ; H02H7/28

Abstract:
An exemplary electrical network in form of a ring system includes a plurality of infeed transformers which are arranged in parallel between a sourcing busbar/cable system and a ring load busbar/cable system. A junction point connects each infeed transformer to the ring load busbar/cable system. The network includes a plurality of current limiters, where each current limiter is positioned between two junction points. Upon a fault event of an infeed transformer, two current limiters on both sides of a respective junction point of the faulted infeed transformer are simultaneously tripped in order to reduce current in the ring load busbar/cable system.
Public/Granted literature
- US20150280427A1 SYSTEM AND METHOD OF CONTROLLING CURRENT-LIMITERS IN RING SYSTEMS Public/Granted day:2015-10-01
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