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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Muller, S. Boiarciuc, M.P. Perigaud, G. |
| Copyright Year | 2009 |
| Description | Author affiliation: SERGI Holding, 186 avenue du Général de Gaulle, 78260 Achères, France (Muller, S.; Boiarciuc, M.P.; Perigaud, G.) |
| Abstract | Oil filled transformer explosions and their prevention are a complex industrial issue. Experimental tests showed that when an electrical fault occurs in a transformer, it generates dynamic pressure waves that propagate in the oil. Reflections of these waves on the walls build up high static pressure which transformer tanks can not withstand. Besides, a numerical tool was developed to simulate the phenomena highlighted during the tests and mainly the pressure wave propagation. It is based on a compressible two-phase flow modelling where viscous flow, electromagnetic, thermal and gravity effects are taken into account. The equations are solved using a finite volume method allowing computing complex 3D transformer geometries. Simulations of the consequence of an electrical arc occurring in a 200 MVA transformer geometry show that the static pressure increase can be prevented by a quick oil evacuation triggered by the first dynamic pressure peak generated by the electrical arc. |
| Starting Page | 1 |
| Ending Page | 8 |
| File Size | 2091177 |
| Page Count | 8 |
| File Format | |
| ISBN | 9781424422340 |
| DOI | 10.1109/PTC.2009.5282154 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-06-28 |
| Publisher Place | Romania |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Oil insulation Explosion protection Numerical simulation Petroleum Testing Computational modeling Electrical equipment industry Electromagnetic reflection Electromagnetic propagation Electromagnetic modeling transformer Pressure effects protection simulation |
| Content Type | Text |
| Resource Type | Article |
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