Efficient long-distance energy transmission conception

A novel consortium model was proposed to improve the efficiency of long-distance energy transmission. In the present model, the liquefied natural gas (LNG) is used as the coolant for the high temperature superconducting power cable (HTSPC), and then both the electrical power and the liquefied natural gas are transmitted. A new structure of the power cable was designed and the effects of the parameters on the energy cost were examined on the basis of the transmission model of LNG established. The results show that the efficiency of the system increases with an increase in the transporting ratio and a decrease in the thermal conductivity of the insulation structure. The efficiency of the new system will reach up to 96% and the system loss rate is only 1/3 that of the conventional system. Moreover, the heat leakage of the cryogenic pipelines is the most important factor of the power consumption, resulting in 85.1% the total power consumption at the cryogenic pump station. It appears that the more efficient thermal insulation for the pipelines can significantly reduce the power consumption of the system.