AC Current Interruption by Liquid Nitrogen in a Superconducting Fault Current Limiting Switchgear

Bin Xiang; Hongxu Li; Lei Gao; Yingsan Geng; Zhiyuan Liu; Jianhua Wang; Xiaoze Pei; Youping Tu

doi:10.1109/ASEMD49065.2020.9276340

AC Current Interruption by Liquid Nitrogen in a Superconducting Fault Current Limiting Switchgear

Bin Xiang, Hongxu Li, Lei Gao, Yingsan Geng, Zhiyuan Liu, Jianhua Wang, Xiaoze Pei, Youping Tu

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

2 Citations (SciVal)

Abstract

A new switchgear named Liquid Nitrogen Insulated metal-enclosed Switchgear (LNIS) is proposed, which uses LN2 as an insulation medium to substitute SF6in Gas Insulated metal-enclosed Switchgears (GIS). Power loss of the LNIS is only about 1/8 of the same level GIS, making the novel switchgear a fascinating technology for future power systems. To make the switchgear more compact and efficient, LN2 is also used as an arc extinguishing medium of disconnecting switches. Thus, closed-loop current that can up to thousands of amps should be interrupted by LN2. However, AC current interruption ability of LN2 is still unknown. The objective of this paper is to obtain the AC current interruption properties of LN2. Experiments are conducted with currents ranging from 700 A to 4 kA. AC current of 2950 A (Peak value) is interrupted by LN2 successfully. The maximum arc energy during the interruption is about 437 J, far less than the Joul heat generated by the rated current flow. Arc energy during interruption doesn't burn extra burden on the cooling system. Thus, AC current interruption ability of LN2could meet requirements for LNIS.

Original language	English
Title of host publication	2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020
Place of Publication	U. S. A.
Publisher	IEEE
ISBN (Electronic)	9781728152158
DOIs	https://doi.org/10.1109/ASEMD49065.2020.9276340
Publication status	Published - 16 Oct 2020
Event	2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020 - Virtual, Tianjin, China Duration: 16 Oct 2020 → 18 Oct 2020

Publication series

Name	2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020

Conference

Conference	2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020
Country/Territory	China
City	Virtual, Tianjin
Period	16/10/20 → 18/10/20

Bibliographical note

Funding Information:
This work is supported by National Natural Science Foundation of China (51877166, 51907153 , 51911530195) and the China Postdoctoral Science Foundation Funded Project (No.2019M653632) and the State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(Grant No.LAPS20008).

Keywords

AC current interruption
arc energy
Liquid Nitrogen Insulated metal-enclosed Switchgear (LNIS)
LN2 switch

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering
Mechanical Engineering
Electronic, Optical and Magnetic Materials

Access to Document

10.1109/ASEMD49065.2020.9276340

Cite this

Xiang, B., Li, H., Gao, L., Geng, Y., Liu, Z., Wang, J., Pei, X., & Tu, Y. (2020). AC Current Interruption by Liquid Nitrogen in a Superconducting Fault Current Limiting Switchgear. In 2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020 Article 9276340 (2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020). IEEE. https://doi.org/10.1109/ASEMD49065.2020.9276340

AC Current Interruption by Liquid Nitrogen in a Superconducting Fault Current Limiting Switchgear. / Xiang, Bin; Li, Hongxu; Gao, Lei et al.
2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020. U. S. A.: IEEE, 2020. 9276340 (2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020).

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

Xiang, B, Li, H, Gao, L, Geng, Y, Liu, Z, Wang, J, Pei, X & Tu, Y 2020, AC Current Interruption by Liquid Nitrogen in a Superconducting Fault Current Limiting Switchgear. in 2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020., 9276340, 2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020, IEEE, U. S. A., 2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020, Virtual, Tianjin, China, 16/10/20. https://doi.org/10.1109/ASEMD49065.2020.9276340

Xiang B, Li H, Gao L, Geng Y, Liu Z, Wang J et al. AC Current Interruption by Liquid Nitrogen in a Superconducting Fault Current Limiting Switchgear. In 2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020. U. S. A.: IEEE. 2020. 9276340. (2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020). doi: 10.1109/ASEMD49065.2020.9276340

Xiang, Bin ; Li, Hongxu ; Gao, Lei et al. / AC Current Interruption by Liquid Nitrogen in a Superconducting Fault Current Limiting Switchgear. 2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020. U. S. A. : IEEE, 2020. (2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020).

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abstract = "A new switchgear named Liquid Nitrogen Insulated metal-enclosed Switchgear (LNIS) is proposed, which uses LN2 as an insulation medium to substitute SF6in Gas Insulated metal-enclosed Switchgears (GIS). Power loss of the LNIS is only about 1/8 of the same level GIS, making the novel switchgear a fascinating technology for future power systems. To make the switchgear more compact and efficient, LN2 is also used as an arc extinguishing medium of disconnecting switches. Thus, closed-loop current that can up to thousands of amps should be interrupted by LN2. However, AC current interruption ability of LN2 is still unknown. The objective of this paper is to obtain the AC current interruption properties of LN2. Experiments are conducted with currents ranging from 700 A to 4 kA. AC current of 2950 A (Peak value) is interrupted by LN2 successfully. The maximum arc energy during the interruption is about 437 J, far less than the Joul heat generated by the rated current flow. Arc energy during interruption doesn't burn extra burden on the cooling system. Thus, AC current interruption ability of LN2could meet requirements for LNIS. ",

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note = "Funding Information: This work is supported by National Natural Science Foundation of China (51877166, 51907153 , 51911530195) and the China Postdoctoral Science Foundation Funded Project (No.2019M653632) and the State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(Grant No.LAPS20008). ; 2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020 ; Conference date: 16-10-2020 Through 18-10-2020",

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AU - Liu, Zhiyuan

AU - Wang, Jianhua

AU - Pei, Xiaoze

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N2 - A new switchgear named Liquid Nitrogen Insulated metal-enclosed Switchgear (LNIS) is proposed, which uses LN2 as an insulation medium to substitute SF6in Gas Insulated metal-enclosed Switchgears (GIS). Power loss of the LNIS is only about 1/8 of the same level GIS, making the novel switchgear a fascinating technology for future power systems. To make the switchgear more compact and efficient, LN2 is also used as an arc extinguishing medium of disconnecting switches. Thus, closed-loop current that can up to thousands of amps should be interrupted by LN2. However, AC current interruption ability of LN2 is still unknown. The objective of this paper is to obtain the AC current interruption properties of LN2. Experiments are conducted with currents ranging from 700 A to 4 kA. AC current of 2950 A (Peak value) is interrupted by LN2 successfully. The maximum arc energy during the interruption is about 437 J, far less than the Joul heat generated by the rated current flow. Arc energy during interruption doesn't burn extra burden on the cooling system. Thus, AC current interruption ability of LN2could meet requirements for LNIS.

AB - A new switchgear named Liquid Nitrogen Insulated metal-enclosed Switchgear (LNIS) is proposed, which uses LN2 as an insulation medium to substitute SF6in Gas Insulated metal-enclosed Switchgears (GIS). Power loss of the LNIS is only about 1/8 of the same level GIS, making the novel switchgear a fascinating technology for future power systems. To make the switchgear more compact and efficient, LN2 is also used as an arc extinguishing medium of disconnecting switches. Thus, closed-loop current that can up to thousands of amps should be interrupted by LN2. However, AC current interruption ability of LN2 is still unknown. The objective of this paper is to obtain the AC current interruption properties of LN2. Experiments are conducted with currents ranging from 700 A to 4 kA. AC current of 2950 A (Peak value) is interrupted by LN2 successfully. The maximum arc energy during the interruption is about 437 J, far less than the Joul heat generated by the rated current flow. Arc energy during interruption doesn't burn extra burden on the cooling system. Thus, AC current interruption ability of LN2could meet requirements for LNIS.

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AC Current Interruption by Liquid Nitrogen in a Superconducting Fault Current Limiting Switchgear

Abstract

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Keywords

ASJC Scopus subject areas

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