Industrial microgrid is the effective method to promote the efficient consumption of new energy and ensure the stable supply of industrial loads. However

due to the high degree of power electronics

high proportion of nonlinear and impact loads

and complex characteristics of "source-grid-load-storage"

the microgrid presents the characteristics of weak damping and power quality

poor transient immunity

and the system being unstable

which restrict the popularization and application of industrial microgrids. In order to sort out the typical problems and solutions in microgrid

the paper summarizes the typical grid structure and source-load characteristics

and then reviews the related problems and strategies from the four aspects of microgrid small disturbance stability

power quality

transient stability

and multi-mode flexible operation. Finally

the prospects in future research direction of industrial microgrid in operation control are put forward.