کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6743903 | 1429329 | 2017 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Free or confined arc model relevant to the quench hazard of large superconducting coils
ترجمه فارسی عنوان
مدل قوس آزاد یا محدود شده مربوط به خطر خاموش شدن کویل های بزرگ ابررسانایی است
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
چکیده انگلیسی
This arc model was motivated by the need to model arcs during the failure of a large superconducting magnet following an unmitigated quench. During a quench, resistive heating raises the conductor and insulator temperature. Electrical and mechanical properties change and inline and bypass arcs can form. The arcs are sustained by the massive (gigaJoule) stored magnetic energy. As windings are bypassed by shorts, the inline arc current and hence, arc diameter, increases. Cable-in-conduit conductors limit the maximum arc column diameter and when limited, the arc properties change rapidly as the arc changes from a free arc to a confined arc. For arc current 10-100Â kA we calculate the arc column electrical properties and temperature, by solving a set of equations describing the arc physics. The equations describe the arc column heating, gas ionisation, heat loss and electrical properties. By constraining the maximum arc column diameter in the solution, the transition between free and confined arc can be calculated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fusion Engineering and Design - Volume 124, November 2017, Pages 119-122
Journal: Fusion Engineering and Design - Volume 124, November 2017, Pages 119-122
نویسندگان
A.D. Ash, A.J.T. Holmes, S. Zheng, S. McIntosh, K. Cave-Ayland, F. Domptail, E. Surrey, N. Taylor, K. Hamada, N. Mitchell,