A PEDF power distribution system can effectively solve two key problems of zero-carbon transition of power system, namely increasing the installed capacity of distributed renewable energy generation and effectively consuming the fluctuating renewable energy generation. PEDF is the abbreviation of the application of photovoltaics (P), energy storage (E), direct current (D) and flexibility (F) in the building field, which is not just simply combine the above technologies independently, but is organically integrated and constitute a whole to realize “flexible energy use”, i.e. to achieve friendly interaction between buildings and the grid. 

The development of a new type of power distribution method for buildings, including photovoltaics (P), energy storage (E), direct current (D) and flexibility (F), is an effective means to suppress grid fluctuations, effectively consume renewable energy, and achieve “carbon neutrality” in buildings. 

DIRECT CURRENT (D)

The building low-voltage DC power distribution system refers to DC-based building power distribution system to reduce AC-DC conversion and improve power efficiency. DC devices are connected to the DC bus of the building, and the DC bus is connected to the external power grid through AC/DC converters. With the increasing DC degree of various types of equipment such as power supply and load in buildings, building DC power distribution system has greater advantages for improving energy utilization efficiency, realizing intelligent control of energy system, improving power supply reliability, increasing interaction with electric power system, and enhancing user safety and convenience of use. The construction of DC electrical ecology is the basis for the promotion of “light, storage, direct and flexible” system.

Realize zero carbon power based on renewable energy

It is quite significant to shift from a carbon-based power system based on fossil energy to a zero-carbon power system based on renewable energy. A PEDF integrated building not only solves part of the wind power, photoelectric installation space problem but makes it possible that the terminal power changes according to the wind power, photoelectric power generation power changes, realizing the wind power, photoelectric consumption, cracked the wind power, photoelectric unregulated problem.