Fault ride through and grid support topology for the VSC-HVDC connected offshore wind farms

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59 Scopus citations


Voltage source converter (VSC) based high voltage direct current (HVdc) transmission draws more attention in recent years for the grid connection of large-scale offshore wind farms (WF). This paper proposes nine switch converter (NSC) based configuration and control strategy for the VSC-HVdc connected offshore WFs to enhance the fault ride through operation of the system. The configuration allows having both shunt and series interfaces to the onshore grid, which allows the isolation of the faulty part of the network, continuous power delivery to the healthy portion, and significant reduction of the fault current. Reduced switch count NSC is utilized at the onshore station to provide simultaneous shunt and series compensation to the electric grid. The proposed control strategy ensures full power evacuation and the dc-link voltage regulation during network disturbances. The comparative analysis between the proposed and conventional VSC-HVdc systems carried out in MATLAB/ Simulink environment revealed the former's enhanced transient performance.

Original languageBritish English
Article number7733100
Pages (from-to)1592-1604
Number of pages13
JournalIEEE Transactions on Power Delivery
Issue number3
StatePublished - Jun 2017


  • fault ride-through
  • nine switch converter
  • positive and negative sequence compensation
  • shunt and series compensation


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