Abstract：

Presents the basic concept of the PSDF (photovoltaic, storage, DC, flexible) building power distribution system, where P is the building photovoltaic, S is the distributed power storage in the building and the use of battery resources from electric vehicles in the neighboring parking lot, D refers to the use of DC power supply system inside buildings, and F is the purpose of the PSDF system, to achieve flexible power demand, so that the building becomes a flexible load or to say a flexible virtual power plant. Describes the framework, the regulation strategy, the achievable capacity range and the way of mutual coordination with the grid of the PSDF system. Points out that the goal of the new power system in the future is to establish a zero carbon power system with wind power and photoelectronic power as the main power supply. The PSDF distribution system can solve the two bottleneck problems in the development of wind power and photoelectronic power: installation space and effective consumption. Therefore, the PSDF system needs to develop and grow synchronously with the growth of installed wind and photovoltaic power and the total amount of electric vehicles.