Design and implementation of an integrated micro-grid system

Microgrid technology, becoming the main application form of distributed generation with high permeability, can effectively alleviate the impacts on large power grid of distributed generation. Microgrid system, as the carrier of microgrid control strategy, can provide verification platform for the research of microgrid control strategy. In this paper, an integrated microgrid system with flexible structure and reliable multi-microgrids system structure is proposed which contains a variety of distributed generations and energy storage systems. The small microgrids can operate separately or in the form of one large microgrid. And this system, using master-slave control strategy, can switch flexibly between grid-connected operation mode and independent operation mode. Meanwhile, the experiments for control, protection and other technologies have been made. It shows that this system can work well with operation control and other related technologies.