Abstract:Aiming at the situation of FDI attacks in the interaction between the physical layer and the information layer of microgrid,this paper proposes a secondary control strategy of DC microgrid to resist FDI attacks based on Kalman filter.The lead following consistency algorithm is used for secondary control.The Kalman filter is designed to filter out the attack signals introduced in the secondary control by considering constant attack and time varying attack signals.The filtered secondary control signal is input into the primary control to realize voltage recovery and power accurate distribution.Two simulation cases prove the effectiveness of the proposed method.