Industrial applications of high-, medium- and low-voltage arc modelling
| Autor: | J Millon Frémillon, C. Fievet, M. Barrault, P. Chevrier, J. Maftoul |
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| Rok vydání: | 1997 |
| Předmět: |
Computer Science::Computer Science and Game Theory
Materials science Acoustics and Ultrasonics Nozzle Thermodynamics Mechanics Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Arc (geometry) Electric arc symbols.namesake symbols Commutation Joule heating Low voltage Lorentz force Circuit breaker |
| Zdroj: | Journal of Physics D: Applied Physics. 30:1346-1355 |
| ISSN: | 1361-6463 0022-3727 |
| DOI: | 10.1088/0022-3727/30/9/010 |
| Popis: | A hydrodynamic model for electrical arc modelling, which takes into account Joule heating, radiation, Lorentz forces, arc - wall interactions and real-gas effects, was applied to study high-, medium- and low-voltage circuit breakers. The first industrial application deals with a high-voltage puffer circuit breaker. Ablation of the nozzle material in this kind of circuit breaker has been studied with the model. The second industrial application presents an self-blast medium-voltage circuit breaker, based on the combination of thermal expansion and the arc-rotation principle. The temperature between the contacts just after the current zero has been evaluated experimentally and numerically. The comparison between these results is discussed. Lastly, the arc commutation in a low-voltage circuit breaker has been simulated. The results show that, in this type of experimental set-up, the interaction among the electrical arc, the flow and the Lorentz force is preponderant. |
| Databáze: | OpenAIRE |
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