Hydrogen-doped natural gas long-distance transportation system based on power grid-gas grid

The invention discloses a hydrogen-doped natural gas long-distance transportation system based on a power grid-gas network, and the system can utilize a widely constructed and perfect power grid and a natural gas pipeline network as the basis, power generated based on renewable energy sources is transported to a second hydrogen production device through a cross-regional power grid, and the second hydrogen production device performs hydrogen production. The prepared hydrogen and the natural gas are mixed through the mixing device, the mixed gas of the natural gas and the hydrogen is conveyed to the hydrogen extraction device through the natural gas pipeline, and the hydrogen in the natural gas pipeline is purified through the hydrogen extraction device, so that cross-regional utilization of the hydrogen is realized; the system can effectively balance the problem of non-uniform distribution of green energy, and reduces the carbon emission in areas with larger energy consumption; the prepared hydrogen energy ser