The reactive power-voltage droop and the voltage-reactive power droop are two typical reactive power control strategies of distributed generators in the multi-inverter paralleled islanded microgrid. A decentralized and hierarchical reactive power distribution control strategy for the microgrid with heterogeneous distributed generators is proposed

whose characteristics include: (1) by adjusting floating voltage

the reactive power distribution error caused by the mismatched feeder impedance can be reduced and the voltage regulation can be achieved; (2) hierarchical structure is built based on multi-time scale

and both fast dynamic and static characteristics of microgrid are satisfactory; (3) the constraint of communication system in the traditional control is relieved

and the plug-and-play effect of distributed generators is achieved. Finally

simulation results verify the feasibility and effectiveness of the control strategy.