An Active Power Regulation Strategy for Wind Farm Considering Wake Effect

摘要

To address the supply-demand imbalance issue in a system with high penetration of wind power, wind farms are required to follow the dispatch command to adjust their outputs, known as load sharing. In this context, this paper proposes a coordinated active power regulation strategy for wind farms in presence of wake effect. In the proposed control scheme, the kinetic energy storage potential and pitch angle adjusting capability of the wind turbine are exploited to extend its output. To reduce the activation frequency of pitch angle control and enhance total kinetic energy storage during the load sharing process, the load sharing ratio of each wind turbine in the proposed control strategy is allocated in a hierarchical manner based on the evaluation of their respective kinetic energy storage charging range/discharging range. Simulation results demonstrate the effectiveness of the proposed control scheme.