This paper presented a detailed analysis and summary on the features of power quality issues in microgrid.The results pointed out that the characteristic of power quality issues in Microgrid depends on the composition of micro sources

the condition of network

and the characteristic of the loads.Base on this conclusion

active power filter compensation solutions for power quality problem were introduced and then the common units in microgrid that can be used as active power filter were investigated from the aspects of structure and application area.After investigation

the combination of APF and micro source were proved to ensure APF releasing its max power quality compensation capability.Finally

it pointed out that most inverters equipped in microgrid could be effective tools for solving power quality problems.