Multi-terminal DC transmission systems for connecting large offshore wind farms
Authors:
- 1 July 2008
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 19325517,p. 1-7
Abstract
This paper describes the use of voltage source converter (VSC) based, multi-terminal (MT) HVDC transmission system technology for connecting large doubly-fed induction generator (DFIG) based wind farms, over long distance. The operational principles of the proposed system are described and control strategies for coordinating various grid side converters are proposed, to ensure smooth system operation and power sharing between various AC networks. DC voltage control and DC droop characteristics are implemented for the grid side VSC which transmit wind farm generated power to AC grids. PSCAD/EMTDC simulations for a four-terminal DC system for connecting two wind farms to two different AC networks are presented to demonstrate robust performance during wind speed and power variations, and large disturbances caused by the trip of one of the wind farms.Keywords
This publication has 11 references indexed in Scilit:
- Grid Integration of Large DFIG-Based Wind Farms Using VSC TransmissionIEEE Transactions on Power Systems, 2007
- Optimal Integration of an Offshore Wind Farm to a Weak AC GridIEEE Transactions on Power Delivery, 2006
- Grid connection of large offshore wind farms using HVDCWind Energy, 2005
- Premium Quality Power Park Based on Multi-Terminal HVDCIEEE Transactions on Power Delivery, 2005
- VSC Transmission Operating Under Unbalanced AC Conditions—Analysis and Control DesignIEEE Transactions on Power Delivery, 2005
- Optimal acquisition and aggregation of offshore wind power by multiterminal voltage-source HVDCIEEE Transactions on Power Delivery, 2003
- Multiterminal LVDC system for optimal acquisition of power in wind-farm using induction generatorsIEEE Transactions on Power Electronics, 2002
- Doubly Fed Induction Generator Systems for Wind Turbines: A Viable Alternative to Adjust Speed over a Wide Range at Minimal CostIEEE Industry Applications Magazine, 2002
- HVDC transmission for large offshore wind farmsPower Engineering Journal, 2002
- Analysis of a robust DC-bus voltage control system for a VSC transmission scheme2001