| People | Locations | Statistics |
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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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Lewin, Pl
University of Southampton
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (32/32 displayed)
- 2022Numerical simulation of lightning strike damage to wind turbine blades and validation against conducted current test datacitations
- 2021Estimation of Contact Resistivity in Lightning Protection Equipotential Bonding Joints of Wind Turbine Bladescitations
- 2021Investigating the Physiochemical Effects of Verdigris Contamination found on a Polymeric Cable Sealing End
- 2020Effect of surfactant molecular structure on the electrical and thermal performance of epoxy/functionalized‐graphene nanocompositescitations
- 2019Effect of temperature on the dielectric properties of hydrofluoroethers and fluorinated ketonecitations
- 2019Understanding the cross-linking reactions in highly oxidized graphene/epoxy nanocomposite systemscitations
- 2019Structural and chemical comparison between moderately oxygenated and edge oxygenated graphene: mechanical, electrical and thermal performance of the epoxy nanocompositescitations
- 2018On the effect of solvent method processing on epoxy resin systemscitations
- 2018Measuring and simulating partial discharge activity in a spherical cavity during electrical ageing processescitations
- 2016Aging mechanisms of X2 metallized film capacitors in a high temperature and humidity environmentcitations
- 2016Dielectric properties of environmental friendly cooling fluidscitations
- 2015Electro-chemical degradation of thin film X2 safety capacitors
- 2015The Effect of Resin Stoichiometry and Nanoparticle Addition on Epoxy/Silica Nanodielectrics
- 2014Passivators, corrosive sulphur and surface chemistry. Tools for the investigation of effective protection
- 2014Numerical modelling of thermal decomposition processes and associated damage in carbon fibre compositescitations
- 2014Exploratory dielectric study involving ultra-low content of Si-C-Al in epoxy
- 2014A Comparison of Electrical Breakdown Characteristics of Composite Materials Prepared With Unmodified Micro and Nano Scale Barium Titanate
- 2013Degradation Behaviour of Solid Insulation Under Cryogenic Conditions
- 2013Applications of Liquid Crystals in Intelligent Insulation
- 2013Impact of Corrosive Sulfur in Transformer Insulation Paper
- 2013Modelling of partial discharge pulses in high voltage cable insulation using finite element analysis software
- 2013Modelling PD in cavities and PD-based degradation mechanisms
- 2012Paper & power: modifying electrical insulation paper
- 2012Two Dimensional Numerical Model to Predict the Thermal-Chemical Degradation of a piece of Carbon Fibre Composite (CFC) due to Laser Ablation
- 2012Applications of Liquid Crystals in Intelligent Insulation
- 2011The thermal and electrical properties of nano-silicon dioxide filled epoxy systems for use in high voltage insulation
- 2011Transport properties and current flow patterns in homogeneous strongly anisotropic materials
- 2011An investigation into improving the breakdown strength and thermal conduction of an epoxy system using boron nitride
- 2011Effects of nanoparticle and stoichiometry on properties of an epoxy system
- 2011Smart Materials as Intelligent Insulation
- 2011Effect of Cross-Linking on the Electrical Properties of LDPE and its Lightning Impulse Ageing Characteristics
- 2001Dynamic AC surface discharge characteristics of PMMA and LDPEcitations
Places of action
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conferencepaper
Degradation Behaviour of Solid Insulation Under Cryogenic Conditions
Abstract
The increasing applications of High Temperature Superconductors (HTS) require the understanding of dielectric behavior at cryogenic temperature. Liquid dielectrics such as liquid nitrogen (LN2) have the ability to recover after discharges provided that efficient cooling is available. However, partial discharge streamers during the pre-breakdown phenomena in LN2 can significantly erode solid insulation. This damage is irreversible and degrades the solid dielectric, therefore, affecting the reliability of the insulation system. The paper investigates the erosion phenomena of cryogenic solid dielectrics caused by partial discharges in LN2 under AC applied voltages. The experiment set-up consists of a sharp tungsten point and a solid insulation barrier on top of a planar electrode. The materials investigated were polytetrafluoroethylene (PTFE) and glass fiber reinforced plastic (GRP). Partial discharges were measured during the tests following IEC 60720 standard and streamer channels were recorded using a high speed camera. Different erosion behavior was found for the two types of materials under study. Damage to the PTFE samples appeared only on the surface while erosion of GRP sample was found in form of a hole of which depth increased over time.