Zobrazeno 1 - 10
of 252
pro vyhledávání: '"Markus Zahn"'
Publikováno v:
Energies, Vol 5, Iss 3, Pp 752-769 (2012)
In order to study the flashover mechanism of polluted insulators under AC voltage, a new arc propagation criterion which is based on an arc root voltage gradient is proposed. This criterion can explain the variation of the arc root voltage gradient i
Externí odkaz:
https://doaj.org/article/7e5eaf7e78b94a669f3f9c2eb8ebff72
Publikováno v:
Energies, Vol 4, Iss 4, Pp 599-615 (2011)
This paper proposes a complete and effective smart over-voltage monitoring and identification system. In recent years, smart grids are of the greatest interest in power system research. One of the main features of smart grid is their self-healing, wh
Externí odkaz:
https://doaj.org/article/e4e4070b76ae492ba222f5e93267e21f
Publikováno v:
AIP Advances, Vol 5, Iss 9, Pp 097207-097207-8 (2015)
Transformer oil-based nanofluids (NFs) with 0.03 g/L Fe3O4 nanoparticle content exhibit 11.2% higher positive impulse breakdown voltage levels than pure transformer oils. To study the effects of the Fe3O4 nanoparticles on the space charge in transfor
Externí odkaz:
https://doaj.org/article/dd0c2b303e3e46f5ba6b096521b29214
Autor:
Manuel Bock, Torsten Eymann, Christian Fötinger, Armin Gerl, Andreas Grandel, Rainer Groß, Harald Kosch, Johannes Nehlsen, Rainer Seck, Markus Zahn
Die von den CIO- und IT-Leiter:innen-Runden vorgelegte IT-Strategie der bayerischen Hochschulen[1] definiert vor dem Hintergrund aktueller Rahmenbedingungen Handlungsempfehlungen für die fortlaufende kooperative und umfassende Erneuerung und Optimie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e9f6c4c89eee3ec9b86aa6ddc35eeeb
Autor:
Hai-Bao Mu, Wei Zheng Zhang, Yuan Li, Junbo Deng, Guan-Jun Zhang, Markus Zahn, Ming Xiao Zhu, Jouya Jadidian, Zhi Min Li
Publikováno v:
IEEE Transactions on Plasma Science. 42:3004-3013
Streamer and breakdown behavior of transformer oil under impulse voltage are investigated with experimental observations and simulation. The optical observation by using Intensified Charge-coupled Device (ICCD) fast snapshot technique indicates that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::384d611f6d7a2b45c0e082481cfb6a78
https://doi.org/10.1109/tps.2014.2320751
https://doi.org/10.1109/tps.2014.2320751
Autor:
Yuan Li, Guan-Jun Zhang, Yan-Hui Wei, Li Zhimin, Zhang Weizheng, Jouya Jadidian, Shuhong Wang, Hai-Bao Mu, Markus Zahn
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 21:1616-1626
A two dimensional axis-symmetric fluid model is developed to present the streamer discharge process in transformer oil under positive and negative sub-microsecond impulse voltage, which is based on the hydrodynamic drift-diffusion approximation to si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99018377d3fe8b79c57a479d02976f19
https://doi.org/10.1109/tdei.2014.004237
https://doi.org/10.1109/tdei.2014.004237
Autor:
Jouya Jadidian, Markus Zahn
Publikováno v:
IEEE Transactions on Plasma Science. 41:2464-2474
Analyses of unipolar charge transport phenomena in series, two-region composite dielectric systems are presented for planar, coaxial cylindrical, and concentric spherical electrode geometries. Space charge limited condition is applied at the charge e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46e87ead3219dfd2cb1b6b1cdc7a5101
https://doi.org/10.1109/tps.2013.2276420
https://doi.org/10.1109/tps.2013.2276420
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 20:601-611
The Kerr electro-optic technique is used to investigate electric field and space charge effects using large Kerr constant propylene carbonate as the dielectric liquid with Kerr constant B≈1.22×10-12 m/V2. However, improved accuracy of this techniq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41b361cc5f5f64f83da37dde7c8c8f0b
https://doi.org/10.1109/tdei.2013.6508764
https://doi.org/10.1109/tdei.2013.6508764
Publikováno v:
Magnetohydrodynamics. 49:546-551
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e04f52878db022d0c93120c35f65279
https://doi.org/10.22364/mhd.49.3-4.55
https://doi.org/10.22364/mhd.49.3-4.55
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 19:1615-1622
Moisture equilibrium characteristics of oil-paper insulation systems are important for insulation condition evaluation of oil-filled transformers. This paper presents moisture equilibrium curves of mineral and vegetable oil-paper insulation systems o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7124689cd41ffc2a2dcc3631b197790f
https://doi.org/10.1109/tdei.2012.6311508
https://doi.org/10.1109/tdei.2012.6311508