Study on Control Strategy of Wind Farms for Rapid Response to Grid Dispatch Instructions

In a centralized control architecture, wind farms often require the participation of wind turbines when facing voltage drops at the grid connection point or a lack of reactive power support. However, if wind turbines directly participate in reactive power support, the delay in solving reactive power commands can result in a lag in the response of the wind farm. The control layer of the wind farm responds slowly when achieving optimization goals, failing to meet the response speed requirements needed by the higher-level control. Additionally, this delay increases with the scale of the wind farm, further exacerbating the lag in responding to grid dispatch instructions. This paper proposes a control strategy for wind farms to rapidly respond to grid dispatch instructions. Upon receiving a grid dispatch instruction, reactive power compensation devices are prioritized to quickly provide reactive power. Once the system stabilizes, the reactive power compensation tasks are transferred to the wind turbines. A simulation model of a real wind farm is established in Matlab/Simulink to verify that the proposed control strategy can effectively improve the response speed of the wind farm.