In　a　microgrid　system　with　multiple　inverters　operating　in　parallel,　due　to　the　resistive-inductive　nature　of　the　line　impedance　and　the　mismatch　between　line　impedance　and　inverter　rated　reactive　power,　inverters　cannot　share　reactive　power　load　in　proportion　to　their　rated　reactive　power　when　droop　control　is　used.　To　address　the　reactive　power　distribution　issue　caused　by　line　impedance,　the　conditions　for　different　inverters　to　share　reactive　power　load　according　to　capacity　ratio　are　analyzed.　An　improved　droop　control　strategy　based　on　adaptive　virtual　impedance　is　proposed.　A　static　virtual　impedance　tuning　method　is　provided　based　on　the　estimated　line　impedance,　de-coupling　active　and　reactive　power　control　and　improving　the　reactive　power　distribution　issue.　Further,　dynamic　virtual　impedance　based　on　the　consistency　algorithm　is　introduced　to　achieve　accurate　reactive　power　distribution.　For　the　AC　bus　voltage　drop　caused　by　virtual　impedance,　a　communication-free　virtual　impedance　voltage　compensation　method　is　employed,　improving　the　bus　voltage　drop.　Simulation　results　validate　the　effectiveness　of　the　proposed　improved　droop　control　strategy.　©　2025　IEEE.