Distributed Voltage Coordinated Control Method For Wind Farm Considering Unit Consistency

The topology of doubly fed turbine has a great influence on the regulation and control of wind farm voltage. Therefore, a reactive power optimization method considering the voltage deviation at the generator terminal is proposed. Firstly, the influence of feeder voltage and reactive power distribution in the wind farm on the generator terminal voltage is analyzed, and a reactive power optimization model is established with the minimum deviation between the grid point voltage and the generator terminal voltage. Then, the reactive power and voltage control strategy of distributed wind power including control node selection, reactive power command calculation and reactive power distribution is proposed. Finally, a wind farm is simulated. The results show that the control method can enhance the stability of the grid voltage of wind power, and reduce the deviation of generator terminal voltage in wind farm and improve the reliability of wind power grid connection.