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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Macgregor, Scott
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2023Modeling of the transient electric field in multilayer dielectric composites under impulsive HV energizationcitations
- 2021The electric field inside a gas cavity formed at a solid-solid dielectric interface stressed with HV impulse
- 2020The effect of relative humidity on the flashover strength of solid insulation
- 2020Impulsive flashover characteristics and Weibull statistical analysis of gas-solid interfaces with varying relative humiditycitations
- 2018Dynamic behaviour of sub- m particles in dielectric liquids under DC stress
- 2015Decontamination of the hospital environmentcitations
- 2014The degradative effects of germicidal light on flexible endoscope material
- 2011Effect of applied field and rate of voltage rise on surface breakdown of oil-immersed polymerscitations
- 2011Mixtures of midel 7131 and THESO insulating liquids for pulsed power applicationscitations
- 2009Computer aided modelling of an interdigitated microelectrode array impedance biosensor for the detection of bacteriacitations
- 2007An investigation of spark discharge parameters for material processing with high power ultrasoundcitations
- 2006Application of electric spark generated high power ultrasound to recover ferrous and non ferrous metals from slag wastecitations
- 2001Diagnostic dielectric spectroscopy methods applied to water-treedcablecitations
Places of action
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conferencepaper
The electric field inside a gas cavity formed at a solid-solid dielectric interface stressed with HV impulse
Abstract
Interfaces between different solid dielectric materials often exhibit lower breakdown strength when compared to bulk solid materials. Of particular concern in many HV and pulsed-power systems are configurations in which a strong tangential field to an interface is developed. In such cases, past studies have shown that solid-solid interfaces are particularly susceptible to electrical breakdown. A reason for such reduction in dielectric strength is the presence of gas cavities formed at the interface, as a result of the inevitability that the contact surfaces will be rough. If left unchecked, this may ultimately lead to the complete and catastrophic failure of the insulation, severely compromising the integrity of the HV system. While some work has been conducted on solid-solid interfaces in steady-state AC regimes, we attempt to extend this knowledge to transient, impulsive energisation, and to better include the effects of electrical parameters such as permittivity and conductivity into our analysis.