Power system based on cracking hydrogen production and high-low pressure combined injection and operation method thereof

The invention relates to a power system based on cracking hydrogen production and high-low pressure combined injection and an operation method of the power system, and belongs to the technical field of power energy. The problem that the ammonia fuel is difficult to apply due to overhigh ignition temperature and pressure is solved. Comprising a plasma catalytic ammonia cracking reforming module and an internal combustion engine cylinder module, the plasma catalytic ammonia cracking reforming module is connected with the internal combustion engine cylinder module, the plasma catalytic ammonia cracking reforming module is used for catalyzing fuel, and the internal combustion engine cylinder module is used for igniting the fuel to do work. According to the plasma catalytic ammonia cracking reforming module disclosed by the invention, ammonia gas with relatively high combustion difficulty is converted into hydrogen gas with a relatively wide ignition boundary in a fuel supply stage in a manner of partially crackin