Doubly-fed Induction Generator based on power electronics inverter controller almost has no contribution to the power system inertial, which makes no difference to system frequency regulation. That how to make DFIG have the ability to participate in frequency regulation is becoming a hotspot at present. In this paper, a detail model of different vector control of DFIG was built firstly, and then the impact on power system inertial with the increasing DFIG penetration was analyzed. In the last, the virtual inertial controller was built in the DIgSILENT/PowerFactory simulation software and the parameter setting of the inertial controller was simulated.