The utility model discloses a many microgrids of cascaded structure light storage type hardware systems. Many microgrids of this cascaded structure light storage type system includes the systems and control system one time, and a subsystem comprises through establishing ties from net switch K1 two sub - microgrids, including photovoltaic power generation array, battery and this locality load, control system comprises sub - microgrid controller, photovoltaic controller, energy storage controller, load control ware and communications network. The economic optimization method of this cascaded structure light many microgrids of storage type adopts a distributed model predictive control algorithm of considering time -of -use tariffs, according to many microgrids mesogene lotus characteristic and roadability, establishs little electric wire netting forecasting model and optimization objective function. The utility model discloses cascaded structure light storage type many microgrids system and the method set up have important engineering application to the research of carrying out the design of many microgrids of light storage type systems organization, mode switch and optimal operation and are worth.