To address the imbalance in the distribution of hydrogen production and consumption load centers and achieve wide-area balance through long-distance hydrogen transportation

this study focuses on the differences in operational characteristics and multi-parameter coupling among the production

storage

and transportation links

and conducts a joint planning for hydrogen production

storage

and transportation using water electrolysis. First

a hydrogen production efficiency model is established by combining the U-I characteristics of the electrolyzer and the Faraday efficiency. Second

a high-pressure gas hydrogen storage tank model is established based on the Fan equation

and a compressor power consumption model is established by considering the changes in the compressor inlet and outlet pressures. Then

considering the impact of hydrogen transmission pressure on hydrogen transmission energy consumption

this paper proposes an operational model for the hydrogen blending pipeline. Finally

considering the balance of electricity and hydrogen load supply and demand and the operational constraints of various equipment

this paper establishes a multi-link joint planning model with the goal of minimizing the average annual comprehensive system cost. A case study is conducted using actual data from the Northwest region. Results show that

after considering multi-link joint planning

the cost of curtailed renewable energy power generation is reduced by 590 million yuan

which is a decrease of 17.98%

and the total annual system cost is reduced by 22.11 billion yuan

which is a decrease of 5.49%

demonstrating the rationality of the proposed planning model.