The reactive power compensation capability of doubly fed induction generator (DFIG) can not meet the demand of largescale wind power grid. Although the introduction of fixed capacitors could provide reactive power compensation, as the system was affected by the power coupling, it could not effectively maintain realtime voltage stability. A control strategy that static var generator (SVG) and DFIG coordinated compensation reactive power was proposed, and the power system stabilizer (PSS) was introduced to suppress the low frequency oscillation of the system, make full use of DFIG wind turbine capacity itself to send reactive power, the configuration capacity of SVG was reduced. The DFIG wind turbine model is established on the MATLAB/Simulink software simulation platform, the simulation results showed that the control strategy could complete the continuous reactive power compensation, effectively maintain the voltage stability and enhance the transmission capacity of the system.