Comparison between Simulation and Experimental Results of Liquid Nitrogen Coolant Distribution in a 66-kV 40-m Model HTS Power Cable System Experiencing Short-Circuit Accidents

Daichi Horita; Koh Agatsuma; Atsushi Ishiyama; Takato Masuda; Toshiya Morimura; Tomoo Mimura

doi:10.1109/TASC.2019.2895676

Comparison between Simulation and Experimental Results of Liquid Nitrogen Coolant Distribution in a 66-kV 40-m Model HTS Power Cable System Experiencing Short-Circuit Accidents

Daichi Horita, Koh Agatsuma, Atsushi Ishiyama, Takato Masuda, Toshiya Morimura, Tomoo Mimura

Research output: Contribution to journal › Article

Abstract

In this study, a computer program was developed to simulate the temperature and pressure distributions of a liquid nitrogen (LN) coolant in a higherature superconducting (HTS) power cable. This program is important for realizing a practical HTS power cable. According to the Japanese criterion for a 66-kV power-transmission system, in a worst case short-circuit accident, a fault current of 31.5 kA may flow in a 66-kV cable system for 2 s. In addition, when a short-circuit accident occurs, the temperature and pressure of an LN coolant increase rapidly The temperature behaviors of the cable cores and coolant were analyzed by solving the nonlinear partial differential heat-conduction equations in the cable cores by considering the energy balance of the heat flow by using the finite-difference method. Moreover, the pressure behaviors of the coolant in a cooling system were analyzed, considering the density and volume behaviors of the coolant. The simulation results for the 66-kV 40-m model cable qualitatively reproduced the experimental results satisfactorily.

Original language	English
Article number	5401305
Journal	IEEE Transactions on Applied Superconductivity
Volume	29
Issue number	5
DOIs	https://doi.org/10.1109/TASC.2019.2895676
Publication status	Published - 2019 Aug 1

Keywords

Cooling system
fault current
higherature superconducting power cable
LN coolant
saturation temperature

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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Horita, D., Agatsuma, K., Ishiyama, A., Masuda, T., Morimura, T., & Mimura, T. (2019). Comparison between Simulation and Experimental Results of Liquid Nitrogen Coolant Distribution in a 66-kV 40-m Model HTS Power Cable System Experiencing Short-Circuit Accidents. IEEE Transactions on Applied Superconductivity, 29(5), [5401305]. https://doi.org/10.1109/TASC.2019.2895676

Comparison between Simulation and Experimental Results of Liquid Nitrogen Coolant Distribution in a 66-kV 40-m Model HTS Power Cable System Experiencing Short-Circuit Accidents. / Horita, Daichi; Agatsuma, Koh; Ishiyama, Atsushi; Masuda, Takato; Morimura, Toshiya; Mimura, Tomoo.

In: IEEE Transactions on Applied Superconductivity, Vol. 29, No. 5, 5401305, 01.08.2019.

Research output: Contribution to journal › Article

Horita, D, Agatsuma, K, Ishiyama, A, Masuda, T, Morimura, T & Mimura, T 2019, 'Comparison between Simulation and Experimental Results of Liquid Nitrogen Coolant Distribution in a 66-kV 40-m Model HTS Power Cable System Experiencing Short-Circuit Accidents', IEEE Transactions on Applied Superconductivity, vol. 29, no. 5, 5401305. https://doi.org/10.1109/TASC.2019.2895676

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abstract = "In this study, a computer program was developed to simulate the temperature and pressure distributions of a liquid nitrogen (LN) coolant in a higherature superconducting (HTS) power cable. This program is important for realizing a practical HTS power cable. According to the Japanese criterion for a 66-kV power-transmission system, in a worst case short-circuit accident, a fault current of 31.5 kA may flow in a 66-kV cable system for 2 s. In addition, when a short-circuit accident occurs, the temperature and pressure of an LN coolant increase rapidly The temperature behaviors of the cable cores and coolant were analyzed by solving the nonlinear partial differential heat-conduction equations in the cable cores by considering the energy balance of the heat flow by using the finite-difference method. Moreover, the pressure behaviors of the coolant in a cooling system were analyzed, considering the density and volume behaviors of the coolant. The simulation results for the 66-kV 40-m model cable qualitatively reproduced the experimental results satisfactorily.",

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