Quench development in superconducting cable having insulated strands with high resistive matrix: I. Experiment

V.S. Vysotski; V.N. Tsikhon; G.B.J. Mulder

doi:10.1109/20.119984

Quench development in superconducting cable having insulated strands with high resistive matrix: I. Experiment

V.S. Vysotski, V.N. Tsikhon, G.B.J. Mulder

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Abstract

The process of quench development in two- and six-strand cables was investigated in detail. Different types of quenches were found. The increase of the starting current level led to a change in the nature of the quench, from current redistribution, to a quench in all strands, to multi-quench with acceleration of the process from step to step, and to fast quench. Strand currents never achieved the critical current value under DC conditions. It is concluded that the cause of fast quench in AC cables is a specific mechanism of the electromagnetic development of quench. It is caused by a rapid redistribution of currents between the strands, which leads to a multi-quench process with acceleration of the normal zone propagation after each quench of the strand. The cause of the fast redistribution is the high inductive coupling coefficient between strands.

Original language	English
Pages (from-to)	735-738
Number of pages	4
Journal	IEEE transactions on magnetics
Volume	28
Issue number	1
DOIs	https://doi.org/10.1109/20.119984
Publication status	Published - 1992
Event	12th International Conference on Magnet Technology, MT-12 1991 - Leningrad (St. Petersburg), Russian Federation Duration: 24 Jun 1991 → 28 Jun 1991 Conference number: 12

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title = "Quench development in superconducting cable having insulated strands with high resistive matrix: I. Experiment",

abstract = "The process of quench development in two- and six-strand cables was investigated in detail. Different types of quenches were found. The increase of the starting current level led to a change in the nature of the quench, from current redistribution, to a quench in all strands, to multi-quench with acceleration of the process from step to step, and to fast quench. Strand currents never achieved the critical current value under DC conditions. It is concluded that the cause of fast quench in AC cables is a specific mechanism of the electromagnetic development of quench. It is caused by a rapid redistribution of currents between the strands, which leads to a multi-quench process with acceleration of the normal zone propagation after each quench of the strand. The cause of the fast redistribution is the high inductive coupling coefficient between strands.",

author = "V.S. Vysotski and V.N. Tsikhon and G.B.J. Mulder",

year = "1992",

doi = "10.1109/20.119984",

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T2 - 12th International Conference on Magnet Technology, MT-12 1991

AU - Vysotski, V.S.

AU - Tsikhon, V.N.

AU - Mulder, G.B.J.

N1 - Conference code: 12

PY - 1992

Y1 - 1992

N2 - The process of quench development in two- and six-strand cables was investigated in detail. Different types of quenches were found. The increase of the starting current level led to a change in the nature of the quench, from current redistribution, to a quench in all strands, to multi-quench with acceleration of the process from step to step, and to fast quench. Strand currents never achieved the critical current value under DC conditions. It is concluded that the cause of fast quench in AC cables is a specific mechanism of the electromagnetic development of quench. It is caused by a rapid redistribution of currents between the strands, which leads to a multi-quench process with acceleration of the normal zone propagation after each quench of the strand. The cause of the fast redistribution is the high inductive coupling coefficient between strands.

AB - The process of quench development in two- and six-strand cables was investigated in detail. Different types of quenches were found. The increase of the starting current level led to a change in the nature of the quench, from current redistribution, to a quench in all strands, to multi-quench with acceleration of the process from step to step, and to fast quench. Strand currents never achieved the critical current value under DC conditions. It is concluded that the cause of fast quench in AC cables is a specific mechanism of the electromagnetic development of quench. It is caused by a rapid redistribution of currents between the strands, which leads to a multi-quench process with acceleration of the normal zone propagation after each quench of the strand. The cause of the fast redistribution is the high inductive coupling coefficient between strands.

U2 - 10.1109/20.119984

DO - 10.1109/20.119984

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