Two centuries ago, German writer Goethe stopped in front of Strasbourg Cathedral in France and exclaimed, “Architecture is frozen music.” Today, architecture not only needs to carry aesthetics, but also needs to go beyond the scope of visual art to give its inherent concern and connotation for the environment and sustainable development.

As a traditional “large household” of carbon emissions, modern architecture is making a magnificent turn to a low-carbon pioneer in an unprecedented manner. As an emerging green building concept and distributed microgrid practice, “light storage straight and soft” is like an avant-garde and harmonious melody, cleverly integrating every note of architectural design and construction. Play the green forte that dances with nature and seeks the future.

350022M Optical storage direct and flexible electric energy system

Open a new chapter of green and low-carbon buildings

The revolution of energy supply side and consumption side will bring about changes in the way of energy use in buildings, and the energy source, the type of energy use and the way of energy supply system will have great changes. In the “Urban and Rural Construction Carbon Peaking Action Plan” of The State Council’s “Carbon peaking Action Plan before 2030”, it is mentioned that it is necessary to improve the level of building terminal electrification, and build “light storage direct and soft” buildings integrating photovoltaic power generation, energy storage, DC distribution, and flexible electricity consumption.

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Specifically, photovoltaic power generation can be used as the main energy supply method of the future building, through the integration of efficient photovoltaic modules on the building surface, such as the roof, facade, shading facilities, etc., the solar energy is directly converted into electricity, to achieve the building’s power self-sufficiency or greatly reduce the dependence on the external grid.

350022M Efficient, safe and economical energy storage is essential for the efficient use of renewable energy, and by equips buildings with energy storage systems, such as battery energy storage or supercapacitors, excess energy generated by photovoltaic power generation can be stored. When the light is insufficient or the electricity consumption peaks, the energy storage system releases the stored electric energy, flattening the supply and demand fluctuations, and ensuring the stability and reliability of the building energy supply.

The construction of DC power distribution system is the basis for the promotion of light storage direct and soft buildings. The traditional AC power distribution system has power loss in the conversion process, and the DC power distribution technology is used to directly use the DC power generated by photovoltaic for various types of DC loads in the building, such as LED lighting, air conditioning, computers, etc., avoiding multiple AC and DC conversion losses and improving energy utilization efficiency. Reduced equipment cost and maintenance difficulty.

Flexible electricity is one of the purposes of the light storage direct soft building, the building will have the ability to interact flexibly with the external grid and other distributed energy sources such as electric vehicles, in order to cope with the uncertainty of a large number of renewable energy supply.

On the one hand, buildings can intelligently adjust their own power generation, power consumption and energy storage strategies according to grid demand and price fluctuations, and participate in grid peak and frequency regulation, demand response and other services;

On the other hand, the building can exchange energy with electric vehicles, etc., through two-way charging facilities, realizing the role of electric vehicles as mobile energy storage units, further optimizing energy management and improving overall energy efficiency.

In summary, with the transformation of China’s energy system, the power system is facing major changes in terms of power supply, adjustability and stability, and light storage has become an effective means to exploit and utilize building flexible resources. The trend of building photovoltaic power generation, energy storage power stations, DC charging piles, DC lighting, DC HVAC equipment, DC fans and DC appliances being continuously put into commercial use and about to be commercial use also makes the application potential of light storage direct soft building market unlimited.