The production method of the off-grid microgrid electrolysis water hydrogen production system is explained in detail.

Release time:

May 05,2022

Hydrogen, as an energy source, has two remarkable characteristics. It boasts a high energy density, with its calorific value per unit mass being approximately three times that of gasoline. It is also green and low-carbon, producing water as a combustion product, making it the cleanest energy source in the world. It is suitable for large-scale energy storage and achieving energy reserves. However, there is only a small amount of hydrogen in the air, and the majority of other hydrogen exists primarily as compounds stored in water. In remote regions or islands where power grid infrastructure is inaccessible, off-grid renewable energy electrolysis water hydrogen production is often adopted, primarily manifesting as wind power electrolysis water hydrogen production and photovoltaic electrolysis water hydrogen production. However, the above-mentioned stand-alone new energy hydrogen production methods are limited by natural conditions such as seasons and weather. For example, photovoltaic power generation cannot produce hydrogen at night or when sunlight is weak, resulting in a low annual utilization rate of hydrogen production equipment, affecting hydrogen production volume, increasing the cost per cubic meter of hydrogen, and subsequently affecting economic efficiency. Furthermore, there are fluctuations in wind power and photovoltaic output, and their output curves cannot match the load curve of electrolysis equipment, easily causing fluctuations in bus voltage and frequency, thereby reducing the service life of electrolyzers and affecting overall hydrogen production efficiency.

Hydrogen, as an energy source, has two remarkable characteristics. It boasts a high energy density, with its calorific value per unit mass being approximately three times that of gasoline. It is also green and low-carbon, producing water as a combustion product, making it the cleanest energy source in the world. It is suitable for large-scale energy storage and achieving energy reserves. However, there is only a small amount of hydrogen in the air, and the majority of other hydrogen exists primarily as compounds stored in water. In remote regions or islands where power grid infrastructure is inaccessible, off-grid renewable energy electrolysis water hydrogen production is often adopted, primarily manifesting as wind power electrolysis water hydrogen production and photovoltaic electrolysis water hydrogen production. However, the above-mentioned stand-alone new energy hydrogen production methods are limited by natural conditions such as seasons and weather. For example, photovoltaic power generation cannot produce hydrogen at night or when sunlight is weak, resulting in a low annual utilization rate of hydrogen production equipment, affecting hydrogen production volume, increasing the cost per cubic meter of hydrogen, and subsequently affecting economic efficiency. Furthermore, there are fluctuations in wind power and photovoltaic output, and their output curves cannot match the load curve of electrolysis equipment, easily causing fluctuations in bus voltage and frequency, thereby reducing the service life of electrolyzers and affecting overall hydrogen production efficiency.

Technical Elements: Given the deficiencies of existing technologies mentioned above, the purpose of this utility model is to provide an off-grid microgrid electrolysis water hydrogen production system to address issues in existing technologies such as the low annual utilization rate of off-grid renewable energy electrolysis water hydrogen production equipment due to limitations of natural conditions, as well as the fluctuations in wind power and photovoltaic output that cause fluctuations in bus voltage and frequency, affecting hydrogen production efficiency. This utility model provides an off-grid microgrid electrolysis water hydrogen production system that comprises: an AC busbar, a hydrogen production module, a backup power source, a photovoltaic power generation module, a wind power generation module, an energy storage module, and a control module.

The input end of the hydrogen production module is connected to the AC busbar, and the output end is connected to the input end of the backup power source. The output end of the backup power source is connected to the AC busbar. The output ends of the photovoltaic power generation module and the wind power generation module are separately connected to the AC busbar. The input and output ends of the energy storage module share a common port, and this shared port is connected to the AC busbar. The control ends of the hydrogen production module, the backup power source, the photovoltaic power generation module, the wind power generation module, and the energy storage module are separately connected to the control module.

Key words:

kylin-tech

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