Abstract: The existing transient damping control scheme based on electromagnetic power feedforward compensation is analyzed,which can effectively suppress the dynamic oscillation of grid-connected active power for energy storage virtual synchronous generator（VSG）,but reduces its inertia support capacity and has the risk of frequency overshoot. In view of this,a transient damping optimization strategy based on frequency feedforward compensation（FFC）is proposed. On the premise of not affecting the inertia response performance of energy storage VSG,the improved transient damping optimization strategy based on FFC can effectively suppress the dynamic oscillation of its grid-tied active power,which can greatly reduce the active power overshoot without increasing the frequency overshoot.Finally,both the Matlab simulation model and the experimental platform of energy storage VSG grid-connected system are established,and the effectiveness and superiority of the proposed transient damping optimization strategy based on FFC are verified by simulation and experimental test results.