A novel quench detection technique for superconducting power cables

A novel quench detection technique for superconducting power cables is proposed. The basic idea relies on the concept of probing a resistance build up through the injection of a small current in parallel to the operating cable. Using a well-designed current comparator circuit, the quench process is...

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Bibliographic Details
Published in:Superconductor science & technology 2019-05, Vol.32 (5), p.55008
Main Authors: Montenero, G, Ballarino, A
Format: Article
Language:English
Subjects:
current transformers
quench detection systems
superconducting cables
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Summary:A novel quench detection technique for superconducting power cables is proposed. The basic idea relies on the concept of probing a resistance build up through the injection of a small current in parallel to the operating cable. Using a well-designed current comparator circuit, the quench process is detected by means of a current measurement. Issues related to noise interferences are mitigated by introducing a differential detection schema. The effectiveness of the approach is shown by implementing a first proof-of-concept device. Experimental results from measurements carried out on MgB2 superconducting cables, at the SM18 test facility at CERN, show the capabilities of the system to properly detect a quench.
ISSN:0953-2048
1361-6668
DOI:10.1088/1361-6668/ab0a2a