As for the intermittent fluctuation of the distribution generation and the improvement of the load of distribution grid to the power quality

the microgrid energy storage provides a new solution for the connection of distribution generation to the distribution grid.The photovoltaic smoothing in the microgrid is achieved through such features of the GTR flywheel energy storage system as fast response and frequent charge and discharge

and the capacity matching of the energy storage device is given with combination of experimental data.In case of isolated grid

the balance between power supply and load requirement and stabilization of the microgrid frequency are achieved by way of transient power regulation of the flywheel energy storage system.The effectiveness of the GTR fly wheel system in the field of photovoltaic fluctuation smoothing and frequency regulation of isolated grid is proved by the experiment.