With the transformation of the global energy structure and the development of intelligent technology

smart microgrids

as an important part of the new electricity system

have attracted widespread attention for their development trends and key issues. First

the development history and connotation evolution of microgrids in various countries are discussed

then the development trend of smart microgrids in China is analyzed

including the main development scenarios

evolution trends

characteristic trends

etc. Finally

the key issues that needed to be paid attention to in smart microgrids are pointed out

and corresponding countermeasures and suggestions are proposed.