Wind Farm Controller and Reactive Power Dispatch Method Thereof and System using the same

摘要

The present invention relates to a method for distributing a reactive power command to a wind farm controller for controlling reactive power compensation of an individual wind power generation system belonging to a wind farm. The present invention is a wind farm controller that distributes a command for controlling reactive power compensation to an individual wind power generation system belonging to a wind farm, comprising: an input unit for inputting a control command for inputting power control and setting reactive power to a control unit; The reactive power loss compensation value for compensating for the reactive power loss of the wind farm is calculated based on the control command input through the input unit, but the size of the set effective power of the wind farm and the power generation capacity of the power generation system are reflected to invalidate the wind farm. A control unit for calculating and outputting a power loss compensation value; A distribution unit for distributing the reactive power loss compensation value inputted from the control unit in correspondence with an individual wind power generation system belonging to a wind farm, and outputting a plurality of commands for reactive power control; For each of the plurality of commands inputted from the distribution unit, the corresponding plurality of reactive power commands generated by reflecting the reactive power loss compensation gain corresponding to the reactive power loss according to the configuration of the internal network of the wind farm is applied to the individual wind power generation systems. It provides a wind farm controller characterized in that it comprises a reactive power command distribution unit for transmitting to the turbine controller. According to the present invention, in the case of distributing a command for controlling reactive power compensation to an individual wind power generation system belonging to a wind farm, the cable type, cable installation distance, inductance, capacitance, and transformer used to construct the internal network of the wind farm Reactive power is stably compensated within the limit of the reactive power of the individual wind power generation system by distributing the command of the reactive power to the individual wind power generation system in consideration of the loss of reactive power according to the internal network configuration of the wind farm including the lights.