This paper proposes a novel control strategy in multi-terminal DC (MTDC) grids with offshore wind generation based on the idea of generalized voltage droop (GVD). In the proposed strategy, the GVD characteristics are assigned to the voltage-regulating converter station, enhancing their control maneuverability and enabling them to perform necessary DC voltage control and power sharing tasks. By adjusting the coefficients of the corresponding GVD characteristic, a converter station can be operated in three operating modes, namely (1) fixed active power control mode, (2) conventional voltage droop control mode or (3) fixed DC voltage control mode. Results of simulations on a test four-terminal DC grid including two offshore wind farm and two AC grids show the capabilities of the proposed control strategy. Moreover, simulation results confirmed stable operation of the GVD control in transition from one operating mode to another. ; Postprint (published version)


    Access

    Download


    Export, share and cite



    Backstepping DC Voltage Control in a Multi-terminal HVDC System Connecting Offshore Wind Farms

    Zhao, Xiaodong / Li, Kang / Xue, Yusheng | Springer Verlag | 2014


    Backstepping DC Voltage Control in a Multi-terminal HVDC System Connecting Offshore Wind Farms

    Zhao, X. / Li, K. / Xue, Y. | British Library Conference Proceedings | 2014


    Floating Offshore Wind Farms

    Castro-Santos, Laura ;Diaz-Casas, Vicente | TIBKAT | 2016


    Offshore Wind Farms and HVDC Grids Modeling as a Feedback Control System for Stability Analysis

    Bidadfar, Ali / Saborío-Romano, Oscar / Altin, Müfit et al. | BASE | 2017

    Free access

    Vindeby heads offshore wind farms

    Flood, M. | Tema Archive | 1990