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Friday, 18 August 2017

Inertial Response of an Offshore Wind Power Plant with HVDC-VSC


2.       Inertial response
3.       Offshore wind turbine



Fig. 1. Test system schematic

Fig. 2. ΔT order applied to the controller of the DFIG

Fig. 3. DFIG rotating speed, 150 MW

Fig. 4. DFIG electromagnetic torque, 150 MW

Fig. 5. HVDC link voltage , 150 MW

Fig. 6. HVDC link current, 150 MW

Fig. 7. Real and reactive power (rectifier side), 150 MW

Fig. 8. Real and reactive power (inverter side), 150 MW

Fig. 9. DFIG rotating speed, 180 MW

Fig. 10. DFIG electromagnetic torque, 180 MW

Fig. 11. HVDC link voltage , 180 MW

Fig. 12. HVDC link current, 180 MW

Fig. 13. Real and reactive power (rectifier side), 180 MW

Fig. 14. Real and reactive power (inverter side), 180 MW

Fig. 15. DFIG rotating speed, 200 MW, 12 m/s

Fig. 16. DFIG electromagnetic torque, 200 MW, 12 m/s

Fig. 17. HVDC link voltage , 200 MW, 12 m/s

Fig. 18. HVDC link current, 200 MW, 12 m/s

Detailed time domain simulations were conducted in order to analyze the transients present on the inertial response of an offshore WPP delivering power through an HVDC-VSC link. Several results from transient behavior are presented, these results show that an offshore WPP connected to the grid via an HVDC-VSC link is able to deliver inertial response if it is requested.
These results are important as the WPP importance for the power system is growing and its performance during contingencies must be asured.
[1] A. Bodin, “HVDC Light—A Preferable Power Transmission System for Renewable Energies.” Proceedings of the 2011 Third International Youth Conference on Energetics; July 7–9, 2011, Leiria, Portugal
[2] M. de Prada Gil, O. Gomis-Bellmunt, A. Sumper, and J. Bergas-Jané, “Analysis of a Multi-Turbine Offshore Wind Farm Connected to a Single Large Power Converter Operated with Variable Frequency.” Energy (36: 5), May 2011; pp. 3272–3281
[3] Feltes, C., and Erlich, I. “Variable Frequency Operation of DFIG-Based Wind Farms Connected to the Grid Through VSC-HVDC Link.” IEEE Power Engineering Society General Meeting, June 24–28, 2007, Tampa, Florida.
[4] N. Miller, K. Clark, M. Cardinal, and R. Delmerico, "Grid-friendly wind plants controls: GE Wind CONTROL—Functionality and field tests," presented at European Wind Energy Conf., Brussels, Belgium, 2008.

[5] N. W. Miller, K. Clark, and M. Shao, “Impact of frequency responsive wind plant controls on grid performance,” presented at 9th International Workshop on Large-Scale Integration of Wind Power, Quebec, Canada, Oct. 18–19, 2010.