Implementation method for sub-synchronous interaction inhibition for double-fed wind farm

The invention relates to a technology in the field of power system detection, in particular to an implementation method for sub-synchronous interaction inhibition for a double-fed wind farm. According to the method, an equivalent circuit model is designed according to a structural design of an actual power system; a sub-synchronous oscillation frequency of the actual power system is obtained by simulation; and the same low-pass filters are added in front of a d-axis current signal input end and a q-axis current signal input end of a rotor side converter controller of a double-fed wind farm system generator respectively, so that the sub-synchronous interaction is inhibited. The implementation method is simple and practical; adverse effects on the control performance and protection cooperation of the controller can be avoided under the premise of ensuring the sub-synchronous interaction inhibition effect; and the method has important engineering application value for safe and stable operation of a large-scale centralized wind power transmission system.