Coordinated Voltage Control of a Wind Farm Considering the Impact of Voltage Support Ability from the Integrated Grid

The limitation of voltage support ability from the integrated grid has introduced severe challenges to the wind farm voltage control at the point of common coupling (PCC). Therefore, this paper proposes an autonomous wind farm voltage control strategy considering the impact of voltage support ability from the integrated grid. First, the interactional mechanism of voltage support between wind farm and the integrated grid is analyzed. Based on that, the influence rules of volatility of wind power on the voltage at the PCC are derived. Then, the coordinated ability of voltage support between wind farm and the grid is integrated into the wind farm voltage control. Combining the model predictive control (MPC), the autonomous procedural voltage control at the PCC is realized. Case studies based on a single wind farm sending-out system are deployed to verify the proposed strategy.