Multi-Terminal HVDC Grid for Network Interconnection and Renewable Energy Integration

Liangzhong Yao, Lie Xu, Masoud Bazargan, R. Critchley

Research output: Contribution to conferencePaper

Abstract

Voltage source converter based multi-terminal HVDC transmission system (MTDC) technology is proposed for network interconnection and integrating large offshore wind farms over long distance. Coordinated DC grid management using close-loop DC voltage control and DC droop characteristics are proposed, to ensure smooth system operation and proper power sharing among various DC converter stations. Onshore transmission network support using the MTDC system for providing dynamic frequency regulation and power oscillation damping is outlined. Simulations for a four-terminal MTDC system connecting two offshore wind farms to two inter-connected onshore AC networks are presented to demonstrate the robust performance of the proposed system during wind speed and power variations, and large disturbances caused by onshore AC fault. The proposed system achieves accurate DC voltage regulation and power sharing. It also provides significant damping and stability support to the onshore power networks after AC fault.
LanguageEnglish
Publication statusUnpublished - 2010
Event43rd CIGRE session - Paris, France
Duration: 8 Aug 2010 → …

Conference

Conference43rd CIGRE session
CountryFrance
CityParis
Period8/08/10 → …

Fingerprint

Offshore wind farms
Voltage control
Damping
Electric power transmission networks
Electric potential

Keywords

  • offshore wind farms
  • grid integrations
  • HVDC
  • multi terminal HVDC

Cite this

Yao, L., Xu, L., Bazargan, M., & Critchley, R. (2010). Multi-Terminal HVDC Grid for Network Interconnection and Renewable Energy Integration. Paper presented at 43rd CIGRE session, Paris, France.
Yao, Liangzhong ; Xu, Lie ; Bazargan, Masoud ; Critchley, R. / Multi-Terminal HVDC Grid for Network Interconnection and Renewable Energy Integration. Paper presented at 43rd CIGRE session, Paris, France.
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Yao, L, Xu, L, Bazargan, M & Critchley, R 2010, 'Multi-Terminal HVDC Grid for Network Interconnection and Renewable Energy Integration' Paper presented at 43rd CIGRE session, Paris, France, 8/08/10, .

Multi-Terminal HVDC Grid for Network Interconnection and Renewable Energy Integration. / Yao, Liangzhong; Xu, Lie; Bazargan, Masoud; Critchley, R.

2010. Paper presented at 43rd CIGRE session, Paris, France.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Multi-Terminal HVDC Grid for Network Interconnection and Renewable Energy Integration

AU - Yao, Liangzhong

AU - Xu, Lie

AU - Bazargan, Masoud

AU - Critchley, R.

PY - 2010

Y1 - 2010

N2 - Voltage source converter based multi-terminal HVDC transmission system (MTDC) technology is proposed for network interconnection and integrating large offshore wind farms over long distance. Coordinated DC grid management using close-loop DC voltage control and DC droop characteristics are proposed, to ensure smooth system operation and proper power sharing among various DC converter stations. Onshore transmission network support using the MTDC system for providing dynamic frequency regulation and power oscillation damping is outlined. Simulations for a four-terminal MTDC system connecting two offshore wind farms to two inter-connected onshore AC networks are presented to demonstrate the robust performance of the proposed system during wind speed and power variations, and large disturbances caused by onshore AC fault. The proposed system achieves accurate DC voltage regulation and power sharing. It also provides significant damping and stability support to the onshore power networks after AC fault.

AB - Voltage source converter based multi-terminal HVDC transmission system (MTDC) technology is proposed for network interconnection and integrating large offshore wind farms over long distance. Coordinated DC grid management using close-loop DC voltage control and DC droop characteristics are proposed, to ensure smooth system operation and proper power sharing among various DC converter stations. Onshore transmission network support using the MTDC system for providing dynamic frequency regulation and power oscillation damping is outlined. Simulations for a four-terminal MTDC system connecting two offshore wind farms to two inter-connected onshore AC networks are presented to demonstrate the robust performance of the proposed system during wind speed and power variations, and large disturbances caused by onshore AC fault. The proposed system achieves accurate DC voltage regulation and power sharing. It also provides significant damping and stability support to the onshore power networks after AC fault.

KW - offshore wind farms

KW - grid integrations

KW - HVDC

KW - multi terminal HVDC

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UR - https://www.pacw.org/issue/december_2010_issue/conference_reports/georgia_tech_protective_relay_conference_2010.html

M3 - Paper

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Yao L, Xu L, Bazargan M, Critchley R. Multi-Terminal HVDC Grid for Network Interconnection and Renewable Energy Integration. 2010. Paper presented at 43rd CIGRE session, Paris, France.