Active Voltage Support Strategy for Microgrid Cluster under Asymmetric Fault

Due to the limited capacity of a single microgrid, the active support effect on the voltage of the power network is not obvious when an asymmetric fault occurs. To solve this problem, an active voltage support strategy for microgrid cluster under asymmetric fault is proposed. Based on the instantaneous power theory, the dual current control loop is used to implement the proposed control strategy. Then, under the environment of Matlab/Simulink, the simulation model of the microgrid cluster composed of three microgrids is built to verify the support effect on the grid-connected point under the proposed control strategy. The simulation results verify the correctness and effectiveness of the proposed control method.