A novel management scheme of multiple microgrids via a common interface

This paper comes up with a novel management scheme of multiple microgrids from the distribution system operators´ (DSOs) point of view. The management is fulfilled via a common interface, which consists of a master AC/DC converter, a bi-directional DC/DC converter interfacing with central energy storages, and a group of distributed DC/AC converters. This interface provides sufficient decoupling between the distribution network (DN) and microgrids. With this interface, microgrids are turned into manageable units and can corporate together to provide ancillary services to DSOs, while maintaining the independency of each microgrid. The unique transient mode of this multi-microgrid system can also contribute to the fault ride through of DN. The work is validated through several case studies on real time digital simulator (RTDS) platform.