Design method of liquefied shale gas-liquid nitrogen-superconducting DC cable composite energy pipeline

Abstract

The invention discloses a design method of a liquefied shale gas-liquid nitrogen superconducting direct current cable compound energy pipeline. The design method has the benefits as follows: three operation limiting conditions, namely the maximum allowable pressure drop, the maximum allowable temperature rise and the maximum allowable vacuum degree change rate, of the compound energy transmissionpipeline are met, and potential safety hazards as follows are avoided: as the vacuum and thermal insulation structural design is unreasonable, so that the vacuum maintenance time is too short, and theheat leakage of the pipeline is too large; meanwhile, the superconducting direct current cable arranged in the liquid nitrogen transmission pipeline is larger in diameter, the magnetic field generated by the running current of the cable is reduced, and the electric energy transmission capacity of the superconducting direct current cable is further improved.

Description

technical field [0001] The invention relates to the technical field of oil and gas storage and transportation and the technical field of electric power transmission, in particular to a design method for a large-capacity liquefied shale gas-liquid nitrogen-superconducting DC cable composite energy transmission pipeline. Background technique [0002] In recent years, in order to alleviate the increasingly serious energy crisis and environmental protection pressure, in addition to the long-distance transportation of compressed shale gas and liquefied shale gas, shale gas has also been directly used for power generation applications. A large-capacity shale gas power station is directly built in the area where shale gas is mined, and then transmitted to long-distance power users through traditional high-voltage transmission lines. Because shale gas mining areas are often far away from large and medium-sized urban areas with concentrated electricity consumption, traditional high-v...

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Problems solved by technology

However, this patent does not comprehensively consider the three constraints of maximum allowable pressure drop, maximum allowable temperature rise, and maximum allowable vacuum degree change rate to realize long-distance, large-capacity liquefied shale gas-liquid nitrogen-superconducting DC cables Hybrid Energy Transmission

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