The power supply and demand balancing system is a system in which power network companies use hydrogen power storage systems and pumped storage power generation to control the simultaneous equalization of power demand and supply.
When the supply of electricity across the entire power network exceeds demand due to factors such as good weather resulting in increased solar power generation, or strong winds resulting in increased wind power generation, the hydrogen power storage system will immediately increase demand to make up for the excess electricity, in accordance with instructions from the power supply and demand adjustment system, using solid oxide electrolysis cells to produce hydrogen and consume electricity, and the pumped storage power plant will pump water from the lower dam to the upper dam and consume electricity.
In addition, when temperatures rise and demand for air conditioners and refrigerators increases, and the demand of the entire power network exceeds the supply, the hydrogen power storage system uses the hydrogen stored in the tank to generate electricity using a solid oxide fuel cell, and the pumped storage power plant uses water flowing from the upper dam to the lower dam to generate electricity, in response to instructions from the electricity reception adjustment system, in order to immediately increase the supply capacity for the excess electricity.
These will adjust the supply and demand of electricity throughout the electricity network.
By installing the hydrogen power storage systems so that their total output capacity exceeds the maximum power demand within the power network area by about 5%, it will be possible to supply electricity until the stored hydrogen runs out, even if all power sources such as solar and wind power are stopped.
This power reception adjustment system eliminates connection restrictions for solar and wind power generation and allows for expansion.
Hydrogen tank storage management
The amount of hydrogen stored in the hydrogen tanks of hydrogen power storage systems at each location will be managed, and when it looks like it will exceed the amount needed to adjust power supply and demand, hydrogen will be extracted from the hydrogen tanks of hydrogen power storage systems located near airports, ports, etc., and ammonia will be produced using that hydrogen and nitrogen in the air, utilizing heat from a high-temperature heat storage device, and the ammonia will be stored in the ammonia tank.The ammonia produced is transported by tanker truck to airports and ports for use in operating aircraft and ships.
Conversely, when the amount of hydrogen in the hydrogen power storage systems of the entire power network becomes extremely low compared to the amount needed to adjust power supply and demand, ammonia is brought in from outside by tanker truck, converted into hydrogen, and injected into the hydrogen tanks of the hydrogen power storage system for use in adjusting power supply and demand.
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"Hydrogen power storage system that utilizes renewable energy"
https://www.global.toshiba/content/dam/toshiba/migration/corp/techReviewAssets/tech/review/2013/07/68_07pdf/f04.pdf
"Kyogoku Power Plant"
https://www.hepco.co.jp/energy/water_power/kyogoku_ps.html