Modeling, Experimental Validation, and Application of VARC HVDC Circuit Breakers

Siyuan Liu, Marjan Popov*, Seyed Sattar Mirhosseini, Simon Nee, Tomas Modeer, Lennart Ängquist, Nadew Belda, Kees Koreman, Mart A.M.M. van der Meijden

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

39 Citations (Scopus)
95 Downloads (Pure)


This paper deals with the modeling, hardware results and model validation by measurements of a VSC assisted resonant current (VARC) dc circuit breaker (CB) and the application within a future network by simulation. The newly emerging VARC dc CB can be used as a solution for the protection of offshore multi-terminal HVDC (MTDC) grids. In this paper, the proposed VARC dc CB is modeled in detail in a PSCAD environment, by taking into account dielectric strength of the vacuum gap, high-frequency current quenching ability and parasitic components. The PSCAD-model is then verified by data from the testing of a 27 kV VARC dc CB prototype with maximum current interruption capability of 10 kA. Additionally, the initial transient interruption voltage and current slope at zero-crossing during the interruption are analyzed. With respect to scaling to a higher voltage level, three types of series connected modules are presented and the performances are compared. The performance of the series connected modules is simulated in a model of a 4-terminal HVDC grid. The obtained results validate the VARC dc CB as a promising solution for the dc fault isolation in MTDC grids.

Original languageEnglish
Article number8869738
Pages (from-to)1515-1526
Number of pages12
JournalIEEE Transactions on Power Delivery
Issue number3
Publication statusPublished - 2020

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.


  • circuit breaker performance
  • HVDC circuit breaker
  • HVDC grid
  • transient analysis
  • VARC


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