The invention relates to a method for controlling the sub-synchronous resonance of a wind power station series compensated transmission system and belongs to the electric power system control technical field. A sub-synchronous current reference signal is given through appropriate signal processing so as to control a switch arranged in a power electronic converter to be on and off and accordingly a sub-synchronous current signal is generated to be injected into the series compensated transmission system, the resonance energy in the wind power station series compensated transmission system is consumed, and accordingly the sub-synchronous resonance in the wind power station series compensated transmission system is effectively inhibited. According to the method for controlling the sub-synchronous resonance of the wind power station series compensated transmission system, the method is based on the modern power electronic technology and the capability of the inhibition on the wind power station SSR (Sub-Synchronous Resonance) is high and the defect that the SSR inhibition capability is limited by the capacity of a fan converter by the traditional decentralized control method is overcome, wherein a sub-synchronous resonance damping control ring can be attached to a converter control system of a doubly-fed fan in the traditional decentralized control method.