Liakopoulou, A. ; Annema, A. J. ; Bortot, L. ; Charifoulline, Z. ; Maciejewski, M. ; Prioli, M. ; Ravaioli, E. ; Salm, C. ; Schmitz, J. ; Verweij, A. P. (2020)
Analysis of short-circuit transients in the LHC main dipole circuit.
In: Journal of Physics: Conference Series, 1559
doi: 10.1088/1742-6596/1559/1/012077
Article, Bibliographie
This is the latest version of this item.
Abstract
After the occurrence and detection of a short circuit to ground in the LHC main dipole circuit, a fast power abort is triggered and the current in the circuit starts decaying semi-exponentially from a maximum value of 11.85 kA to zero, with a time constant of 103 s. If a short to ground occurs, the current flows through the fuse that is present in the grounding subcircuit. Depending on the value of the thermal load, the fuse first enters a pre-arcing region where it starts intermittently blowing up, until the blow-up threshold is reached, after which it definitively blows up. A simulation scheme utilising a common interface between PSpice and Matlab is proposed in order to simulate the blow-up behaviour of the fuse and hence increase the accuracy of the circuit model for short circuits to ground. A parametric analysis of the short circuit to ground parameters is performed and a better understanding of the behaviour of the circuit under different conditions is obtained. The worst-case values of the voltage to ground in the LHC main dipole circuit are identified for both the case where the intermittent behaviour of the fuse is included in the model as well as for the case where the fuse is not modelled and a comparison between the two is given.
| Item Type: | Article |
|---|---|
| Erschienen: | 2020 |
| Creators: | Liakopoulou, A. ; Annema, A. J. ; Bortot, L. ; Charifoulline, Z. ; Maciejewski, M. ; Prioli, M. ; Ravaioli, E. ; Salm, C. ; Schmitz, J. ; Verweij, A. P. |
| Type of entry: | Bibliographie |
| Title: | Analysis of short-circuit transients in the LHC main dipole circuit |
| Language: | English |
| Date: | 2020 |
| Place of Publication: | Bristol |
| Publisher: | IOP Publishing |
| Journal or Publication Title: | Journal of Physics: Conference Series |
| Volume of the journal: | 1559 |
| Collation: | 10 Seiten |
| DOI: | 10.1088/1742-6596/1559/1/012077 |
| Corresponding Links: | |
| Abstract: | After the occurrence and detection of a short circuit to ground in the LHC main dipole circuit, a fast power abort is triggered and the current in the circuit starts decaying semi-exponentially from a maximum value of 11.85 kA to zero, with a time constant of 103 s. If a short to ground occurs, the current flows through the fuse that is present in the grounding subcircuit. Depending on the value of the thermal load, the fuse first enters a pre-arcing region where it starts intermittently blowing up, until the blow-up threshold is reached, after which it definitively blows up. A simulation scheme utilising a common interface between PSpice and Matlab is proposed in order to simulate the blow-up behaviour of the fuse and hence increase the accuracy of the circuit model for short circuits to ground. A parametric analysis of the short circuit to ground parameters is performed and a better understanding of the behaviour of the circuit under different conditions is obtained. The worst-case values of the voltage to ground in the LHC main dipole circuit are identified for both the case where the intermittent behaviour of the fuse is included in the model as well as for the case where the fuse is not modelled and a comparison between the two is given. |
| Identification Number: | Artikel-ID: 012077 |
| Additional Information: | Erstveröffentlichung; 14th European Conference on Applied Superconductivity (EUCAS2019) 01.-05.September 2019, Glasgow, UK |
| Classification DDC: | 500 Science and mathematics > 530 Physics 600 Technology, medicine, applied sciences > 621.3 Electrical engineering, electronics |
| Divisions: | 18 Department of Electrical Engineering and Information Technology 18 Department of Electrical Engineering and Information Technology > Institute for Accelerator Science and Electromagnetic Fields > Computational Electromagnetics 18 Department of Electrical Engineering and Information Technology > Institute for Accelerator Science and Electromagnetic Fields |
| Date Deposited: | 20 Jun 2024 12:08 |
| Last Modified: | 20 Jun 2024 12:08 |
| PPN: | |
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| Suche nach Titel in: | TUfind oder in Google |
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Analysis of short-circuit transients in the LHC main dipole circuit. (deposited 11 Jun 2024 09:23)
- Analysis of short-circuit transients in the LHC main dipole circuit. (deposited 20 Jun 2024 12:08) [Currently Displayed]
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