Effect of network protection requirements on the design of a flexible AC/DC-link

A.W. Burstein, V. Cuk, E.C.W. de Jong

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This study explores how protection systems affect the design of a medium-voltage (MV) flexible AC/DC link (FDCL). To show this impact, two FDCL designs are analysed. The first designed before considering protection and the second created specifically to solve the protection issues realised in the first. One of the main aspects of the FDCL is to be placed into an existing network, reuse existing equipment, and not require any changes outside of the substations of installation. In this way, the converters must be sized in such a way to retain selectivity of the lower network as well as be able to secure a continuous supply of power through the link even in the case of a DC-side fault. How this is performed and the converter overrating requirements are determined for a 10 kV MV link.
Original languageEnglish
Pages (from-to)1291-1296
JournalJournal of Engineering
Issue number15
Publication statusPublished - 25 Oct 2018
Event14th International Conference on Developments in Power System Protection - The Europa Hotel, Belfast, United Kingdom
Duration: 12 Mar 201815 Mar 2018


  • 0 MV
  • AC-DC power convertors
  • DC link
  • DC-side fault
  • FDCL designs
  • existing equipment
  • existing network
  • installation substations
  • lower network
  • medium-voltage flexible AC
  • network protection requirements
  • power system protection
  • protection issues
  • protection systems
  • substations
  • voltage 10


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