Design and testing of a 10 kV/1 kA superconducting energy pipeline prototype for electric power and liquid natural gas transportation

Qiu, Qingquan; Xiao, Li-Ye; Zhang, Guomin; Teng, Yuping; Song, Ning‐Ning; Jing, Liwei; Zhao, Yanxing; Chen, Jianhui; Zhang, Jianlin; Zhou, Zhihao; Gong, Maoqiong; Qiu, Ming

doi:10.1088/1361-6668/ab9ad0

Cited by 30 publications

(7 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The preliminary design of the bipolar DC superconducting cable, the dualchannel dewar tube and the whole energy pipeline were discussed in focus. The literature [8] designed and tested a 10 kV/1 kA LNG superconducting energy pipeline, in which the cable is insulated with LN2/CF4 mixture and the pipeline carries mixture of LNG/C3H8. The literature [9] put forward a conceptual design of 1 GW LH 2 -LNG coaxial SEP and LNG is refrigerant.…”

Section: Introductionmentioning

confidence: 99%

Integrated Operational Characteristic Simulations of a ±100 kV/1 kA Superconducting DC Energy Pipeline Based on Multi-Physics Field Interaction

Zhu

Huang

Qiu

et al. 2023

IEEE Trans. Appl. Supercond.

Self Cite

View full text Add to dashboard Cite

The DC superconducting energy pipeline (DC SEP) is a promising technology, which has the ability to transmit electricity and fossil energy such as liquefied natural gas (LNG) at the same pipeline so that LNG could serve as the refrigerant for the high-temperature superconducting (HTS) cables. The collaborative transportation of electricity and LNG increases the efficiency while lowering the cost. However, the operation performance of the SEP, which is crucial for HTS cables and LNG, is of greater complexity on account of multi-physics interactions. Herein, a ±100 kV/1 kA SEP model with electric, magnetic, fluid and thermal fields is established in COMSOL Multiphysics to analyze the temperature distribution of SEP via parametric scanning on SEP heat leakage and LNG flow rate. Finally, the relationship between temperature rise and LNG flow rate of a SEP has been estimated based on the interactions of the multi-physics fields. The results indicate that the temperature rises by 11.6 K for every kilometer of SEP. Moreover, the influences of heat leakage and LNG flow on temperature rise are revealed. Temperature rise increases proportionally with heat leakage and it decreases not monotonously with LNG flow rate. This study validates the feasibility of SEP and provides the theoretical references for the demonstration of SEP.

show abstract

Section: Introductionmentioning

confidence: 99%

Integrated Operational Characteristic Simulations of a ±100 kV/1 kA Superconducting DC Energy Pipeline Based on Multi-Physics Field Interaction

Zhu

Huang

Qiu

et al. 2023

IEEE Trans. Appl. Supercond.

Self Cite

View full text Add to dashboard Cite

show abstract

“…In recent years, the concept of a superconducting energy pipeline (SEP) has been proposed [1], which contains natural gas pipelines and superconducting cables as shown in Figure 1. SEP is capable of transmitting both electricity and LNG, it greatly improves efficiency and saves transmission costs [2]. A liquid protective medium (LPM) is filled in SEP as a cooling and insulation medium.…”

Section: Introductionmentioning

confidence: 99%

Influence of bubbles on electric field distribution of butt‐gaps in superconducting cable insulation layer

Zhang

Xue

Xiang

et al. 2021

IET Generation Trans & Dist

View full text Add to dashboard Cite

Superconducting energy pipeline (SEP) is a new type of electrical energy transmission. It contains high-temperature superconducting cables and liquefied natural gas pipelines and can simultaneously transmit electricity and liquefied natural gas (LNG). However, when the superconducting tapes in the superconducting cables in SEP quench and generate heat, bubbles will generate in the butt-gaps of the insulation layer of superconducting cables, which can reduce the insulation strength of the cables significantly. In addition, the effects of bubbles in the butt-gap of the insulation layer on the insulation properties of the superconducting cables are unknown. The objective here is to obtain the influences of bubbles in the insulation layer of superconducting cables in capacitive field, transitional field, and resistive field. Simulation results show that: Compared with the absence of bubbles, the big bubbles can increase the capacitive field strength of the PP film, the butt-gap, and the kraft by 37.54%, 30.89%, and 18.5%, and increase the transition time from the capacitive field to the resistive field, but has almost no effect on the butt-gap in the resistive field.

show abstract

“…Meanwhile, to match the liquefaction temperature of LNG, LN 2 is replaced with LN 2 /LCF 4 as the dielectric cooling medium. 6,7 However, tetrafluoromethane as a greenhouse gas does not meet the requirements of climate protection 22 and significantly increases the overall cost of the energy pipeline. It has an incomparable economic value and attractive prospects to directly use LNG as the dielectric cooling medium of the superconducting energy pipeline; meanwhile, it is more in line with the requirements of environmental protection (see Figure 1c).…”

Section: Introductionmentioning

confidence: 99%

“…Among the existing energy pipelines, the integration of superconducting transmission and LNG delivery has obvious advantages. ,− Figure b,c demonstrates two integrated superconducting energy pipelines. On the one hand, a normal operating superconductor has no heat generation below the critical temperature due to its zero resistance in a DC electric field, thus realizing the high-capacity power transmission. − On the other hand, LNG is one of the most widely used clean energy sources .…”

Section: Introductionmentioning

confidence: 99%

“…In the absence of reliable and stable test equipment for LNG insulating properties, the present superconducting energy pipelines are all improved versions of traditional superconducting cables, in which LNG does not directly contact the superconductor (see Figure b). Meanwhile, to match the liquefaction temperature of LNG, LN 2 is replaced with LN 2 /LCF 4 as the dielectric cooling medium. , However, tetrafluoromethane as a greenhouse gas does not meet the requirements of climate protection and significantly increases the overall cost of the energy pipeline.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Liquefied Natural Gas for Superconducting Energy Pipelines: A Feasibility Study on Electrical Insulation

et al. 2021

Self Cite

View full text Add to dashboard Cite

A superconducting energy pipeline is an integrated system for fuel delivery and power transmission. In the energy pipeline, direct current (DC) power is carried by superconducting tapes with almost no loss. Moreover, liquefied natural gas (LNG) is used not only as one kind of clean energy but also as a cooling medium. However, the lack of data on the electrical insulation characteristics of LNG (especially the resistance to breakdown and flashover) restricts the development of a superconducting energy pipeline. Therefore, this paper focuses on solving a series of problems (such as gas tightness, overpressure, and high voltage) in LNG insulation testing, obtaining the electrical failure data of multicomponent LNG, and analyzing the behavior of electric breakdown and flashover in LNG. The test results show that LNG as a dielectric cooling medium has remarkable performance in withstand voltage to replace the liquid nitrogen/liquid tetrafluoromethane (LN2/LCF4) binary mixtures. The research could offer key technical support for the superconducting energy pipeline and also provide a reference for the study of electrical properties on other cryogenic fuels.

show abstract

Design and testing of a 10 kV/1 kA superconducting energy pipeline prototype for electric power and liquid natural gas transportation

Cited by 30 publications

References 17 publications

Integrated Operational Characteristic Simulations of a ±100 kV/1 kA Superconducting DC Energy Pipeline Based on Multi-Physics Field Interaction

Integrated Operational Characteristic Simulations of a ±100 kV/1 kA Superconducting DC Energy Pipeline Based on Multi-Physics Field Interaction

Influence of bubbles on electric field distribution of butt‐gaps in superconducting cable insulation layer

Liquefied Natural Gas for Superconducting Energy Pipelines: A Feasibility Study on Electrical Insulation

Contact Info

Product

Resources

About