Study on Hydrogen energy supply system with natural gas pipeline in China

in the eastern part of China, due to lack of primary energy resources, the electricity load is relatively concentrated, resulting in an imbalance in the distribution of energy resources and power load. At the same time, in the northwestern region, solar wind power generation is developing rapidly, and power supply is far greater than demand leads to waste of resources. Therefore, this paper proposes a hydrogen energy system, which aims to convert energy in the northwest into power resources and transport it to the eastern region where electricity is scarce. In this research, we investigated an energy supply system in China based on China's existing natural gas pipeline, then analyzed whether it can be used to transport hydrogen. After analysis the energy losses of pipeline are proportional to distance and consume approximately 1% of energy per thousand kilometers. Considering the energy loss of the pipeline the system, the energy efficiency of the system was 36% when the total electrical power efficiency was about 19% and the efficiency of the heat supply was 17%.