DC voltage control and power dispatch of a multi-terminal HVDC system for integrating large offshore wind farms

Lie Xu, Liangzhong Yao

Research output: Contribution to journalArticle

183 Citations (Scopus)

Abstract

Multi-terminal HVDC transmission technology using voltage source converters is proposed for integrating large offshore wind farms with transmission grids. Different DC voltage control and power dispatch strategies are proposed to demonstrate the flexibility and capability of such a transmission system in integrating large-scale variable wind generation. Various options for ensuring satisfactory ride through onshore grid faults are discussed. PSCAD/EMTDC simulations on a four-terminal high voltage direct current (HVDC) system with two offshore and two onshore converter stations during wind speed and power variations, and control mode switching are presented to show the robust performance and ability of the proposed system. Further studies during severe fault on one of the connected onshore AC networks are provided to validate the fault ride through capability of the multi-terminal HVDC system.
Original languageEnglish
Pages (from-to)223-233
Number of pages11
JournalIET Renewable Power Generation
Volume5
Issue number3
DOIs
Publication statusPublished - 2011

Keywords

  • DC voltage control
  • power dispatch
  • multi-terminal HVDC system
  • large offshore wind farms
  • wind power
  • HVDC power transmission
  • offshore installations
  • power grids
  • voltage control

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