Technical Assessment of the DCCB Installation in the Ijmuiden Ver Wind Interconnector Project

Mario Zaja, Dragan Jovcic, J Moore, Kees Koreman

Research output: Contribution to conferenceUnpublished paperpeer-review


An interconnector is considered for facilitating power trading between two nearby offshore HVDC systems, the Dutch Ijmuiden Ver wind farm and the British Norfolk wind farm. Dutch TSO TenneT is evaluating the feasibility of installing a DC ciruit breaker to protect the Dutch side against DC faults on the British side and the interconnector cable. This paper presents a preliminary study on the technical aspects of DC circuit breaker installation on the Ijmuiden Ver offshore platform. Both the unidirectional and bidirectional DCCB are considered, with
different fault detection methods for each breaker type. The load flow analysis considers the dynamic impact of DCCB inductor on the power flow reversal, as well as the increase in conduction losses. Required DCCB ratings are provided, considering three different DCCB opening times, two MMC blocking strategies and unidirectional or bidirectional current breaking capability.
Original languageEnglish
Publication statusAccepted/In press - 29 Apr 2021
Event41st CIGRE Symposium - Cankarjev dom Congress and Cultural Centre of Ljubljana, Ljubljana, Slovenia
Duration: 21 Nov 202124 Nov 2021
Conference number: 41st


Conference41st CIGRE Symposium
Internet address

Bibliographical note

The authors are grateful to Alex Alefragkis (TenneT) and Cornelis Plet (DNV GL) for their suggestions and for providing the realistic model parameters. The authors are also grateful to Seyed Mirhosseini and Marjan Popov from TU Delft for providing the PSCAD model template. This work was supported by the European Union’s Horizon 2020 research and innovation program under grant No. 691714.


  • DC grid protection
  • DC circuit breaker
  • wind interconnector
  • Ijmuiden Ver
  • offshore wind


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