Research on strategy of renewable energy electric hydrogen synthesis ammonia system based on two-stage robust optimization

Renewable Power to Ammonia is one of the largescale consumption ways of renewable energy such as wind power generation and photovoltaic power generation, and it is also one of the important technical routes for the chemical industry to achieve low-carbon and clean development. Aiming at the uncertainty of renewable energy and load in the system, a two-stage robust optimization model of min-max-min structure was established in this paper. The model of hydrogen synthesis ammonia system using wind power photovoltaic electrolysis water was based on wind speed data, fan parameters, light data, environmental parameters, synthetic ammonia output, power consumption of hydrogen production process and economic data, etc. Under the conditions of real-time power balance of hydro-gen-producing ammonia system, new energy power rejection rate, electrolytic cell characteristics, hydrogen demand for synthetic ammonia and upper and lower limits of energy storage, the objective function of the first stage is the optimal investment cost of the mi-crogrid, and the second stage is the optimal operation cost of the mi-crogrid. Finally, the validity of the proposed model and algorithm is verified by using real-time landscape data simulation analysis in Da ‘an District.