Design and selection of advanced protection schemes have become essential for reliable and secure operation of networked microgrids. Various protection schemes that allow correct operation of microgrids have been proposed for individual systems in different topologies and connections. Nevertheless

protection schemes for networked microgrids are still in development

and further research is required to design and operate advanced protection in interconnected systems. Interconnection of these microgrids in different nodes with various interconnection technologies increases fault occurrence and complicates protection operation. This paper aims to point out challenges in developing protection for networked microgrids

potential solutions

and research areas that need to be addressed for their development. First

this article presents a systematic analysis of different microgrid clusters proposed since 2016

including several architectures of networked microgrids

operation modes

components

and utilization of renewable sources

which have not been widely explored in previous review papers. Second

the paper presents a discussion on protection systems currently available for microgrid clusters

current challenges

and solutions that have been proposed for these systems. Finally

it discusses the trend of protection schemes in networked microgrids and presents some conclusions related to implementation.