Reactive power sharing among distributed generators（DG）is a key problem in droop control based microgrid operation. Thecauses of unequal reactive power sharing include feed impedance differences, load differences, and uneven distribution of DG in size andposition. Therefore, a mixed-integer linear programming（MILP）problem for microgrids is presented to achieve proportional reactive powersharing among microgrids. Firstly, the optimum size and position of DG are studied, and various nonlinear terms involved are linearized indetail. Then a one-day advance schedule is generated on these DGs for a given load profile. After that, an actual ZIP load model is used tomodel the load more accurately. Finally, the proposed method is tested on a modified 33-bus network. The experimental results verify theaccuracy of the proposed planning and scheduling methods