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China Achieves Grid Connection of Solid Hydrogen Power Generation for the First Time
Release time:
2023-10-23
On March 25th, the national key research and development project of solid-state hydrogen power generation was first implemented in Guangzhou and Kunming simultaneously, which is the first time that photovoltaic power generation is converted into solid-state hydrogen energy and applied to power systems in China.At Guangzhou Nansha Electric Hydrogen Intelligent Energy Station, these seven cuboids for storing hydrogen are the solid-state hydrogen storage devices that have just been put into operation.
Solid hydrogen storage is different from current gaseous and liquid hydrogen storage methods. It involves the chemical reaction between hydrogen and alloys at room temperature, allowing hydrogen atoms to enter the voids of the metal for storage. The pressure for hydrogen storage is 2 to 3 MPa, and increasing the ambient temperature of the alloy can release hydrogen.
It can store 200 cubic meters of hydrogen, and its hydrogen storage density is very high. If you replace it with a common three megapascals hydrogen storage tank, the volume will increase by 20 times, and the hydrogen stored in this way may occupy more than half of the storage tank in this site.
The biggest advantage of solid-state hydrogen storage is its simplicity and efficiency, which is similar to making a large energy storage tank, which can store unstable power generation such as photovoltaic and wind power in a high-density manner. In Guangzhou, this technology can also heat up and release high-pressure hydrogen gas for hydrogenation of new energy vehicles.
The energy station realizes the flexible conversion between "green electricity" and "green hydrogen" through the integration of hydrogen energy production, storage, power generation, and hydrogenation, which well solves the problem of randomness and strong seasonal fluctuations in new energy power generation.
In Yunnan, solid state hydrogen storage has also achieved demonstration applications, where hydrogen is released and converted into electrical energy through fuel cells, which are integrated into the power grid. Regardless of whether it is night or cloudy, new energy can be absorbed and converted to the maximum extent in real-time.
The 165 kilograms of hydrogen energy stored in the entire project can continuously and stably generate power for 23 hours and 2300 degrees during peak power consumption, which will promote the large-scale and stable consumption of clean energy and accelerate the construction of new power systems.
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