Compressed air energy storage emerges
In recent years, in addition to the social and economic development itself, the rapid development of negative products, shortage of energy resources and environmental pollution have attracted more and more attention. The development and application of energy storage technology can help solve the challenges of effective energy utilization. Compressed air energy storage is a large-scale physical energy storage method that can solve the problem of unstable renewable energy generation such as photovoltaics and wind power that is difficult to connect to the grid, and improve its energy efficiency.
The main components of traditional compressed air energy storage include compressor, compressed air storage, combustion chamber, expander and motor/generator. In the energy storage process, air enters the compressor from the atmospheric environment, is compressed into high-pressure air and stored in the compressed air storage. In the process of energy release, the high-pressure air in the compressed air storage first enters the combustion chamber, mixes and burns with fuel to become high-temperature and high-pressure air, and then enters the expander to play its role, thereby outputting electrical energy.
After nearly 50 years of production and operation and continuous development, compressed air energy storage has become another large-scale physical energy storage technology in addition to pumped water storage. Its characteristics are the largest capacity, mature technology and commercialization. Compared with other forms of energy storage technologies such as battery energy storage and flywheel energy storage, compressed air energy storage has the advantages of high energy storage efficiency, long service life, large storage capacity, and lower investment costs. It can play an important role in realizing grid peak reduction and valley filling, promoting the efficient consumption of new energy, and improving the security and flexibility of the power system.
