Microgrids Based on DC Energy Pool

After analyzing typical structure of microgrids with distributed energy sources, a new idea of microgrid based on "DC energy pool" is proposed in the paper, whose energy exchanging process is also discussed. The new idea lays stress on the skillfully control of energy stored in the energy-storage device. Since the power balance within the microgrid is realized in a way with the help of distributed regulating power source such as micro-gas turbine, the demand for large capacity energy-storage device is reduced.