CONTROL METHODS OF THE VSC-HVDC CONNECTED OFFSHORE WIND POWER PLANTS FOR FULFILLING; LVRT AND FREQUENCY REGULATION SUPPORT

Grid integration of offshore wind farms could seriously impact the operation and stability of their interconnected power system. To assist in maintaining the power system stability when large disturbances occur in the grid, modern offshore wind farms consisting of variable-speed wind turbines are required to provide ancillary services such as voltage and frequency control. The focus is given on the control methods of the VSC-HVDC connected offshore wind power plants for fulfilling the grid code requirements; LVRT and frequency regulation support.

CONTROL METHODS OF THE VSC-HVDC CONNECTED OFFSHORE WIND POWER PLANTS FOR FULFILLING; LVRT AND FREQUENCY REGULATION SUPPORT

Grid integration of offshore wind farms could seriously impact the operation and stability of their interconnected power system. To assist in maintaining the power system stability when large disturbances occur in the grid, modern offshore wind farms consisting of variable-speed wind turbines are required to provide ancillary services such as voltage and frequency control. The focus is given on the control methods of the VSC-HVDC connected offshore wind power plants for fulfilling the grid code requirements; LVRT and frequency regulation support.

___

  • [1] Castel, R. (2011). Connection of offshore wind farms to the grid in Europe and Brittany, KTH, Royal Institute of Technology, Stockholm, Sweden. [2] Silva B.A., (2013), Control Strategies for Ancillary Services Provision in Interconnected Transmission Systems with Offshore Wind Farms, University of Porto, Portugal [3] Chaudhary S.A., (2011), Control and protection of wind power plants with VSC-HVDC connection, Aalborg University, Denmark [4] Sharma R., Andersen, M., Akhmatov V., Jensen K. H., Rasmussen, Wederberg T., (2012), Electrical Structure of Future Off-shore Wind Power Plant with a High Voltage Direct Current Power Transmission, Technical University of Denmark [5] Nanou S., Papathanassiou S., (2016), Grid Code Compatibility of VSC-HVDC Connected Offshore Wind Turbines Employing Power Synchronization Control, IEEE Transactions on Power Systems,31, 5042 - 5050 [6] Vrana T. K., Flynn D., Lazaro E. G., Kiviluoma J., Marce D., Cutululis N., J. Smith C., (2018), Wind power within European grid codes: Evolution, status and Outlook, DOI: 10.1002/wene.285 [7] Kompili A, Wu Q, Zhoa H, (2016) ,Rewiev of VSC HVDC connection for offshore wind integration, Renewable of Sustainable Energy Rewiews, 59, 1405-1414 [8] Ndreko M., (2016), Offshore Wind Plants with VSC-HVDC Connection and their Impact on the Power System Stability: Modeling and Grid Code Compliance, Delft University of Technology [9] Hertem, D.V., Bellmunt. O. G., Liang J. (2016). HVDC Grids For Offshore and Supergrid of the Future. ISBN: 978-1-118-85915-5