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dc.contributor.authorBelana Punseti, Juan
dc.contributor.authorDiego Vives, José Antonio
dc.contributor.authorOrrit Prat, Jordi
dc.contributor.authorMudarra López, Miguel
dc.contributor.otherEscola Tècnica Superior d'Enginyeries Industrial i Aeronàutica de Terrassa
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear
dc.date.accessioned2010-03-26T17:39:09Z
dc.date.available2010-03-26T17:39:09Z
dc.date.issued2007
dc.identifier.citationBelana, J. [et al.]. A model to explain the TSDC spectrum of XLPE insulation in mid voltage cables based on a virtual electrode. A: International Conference on Solid Dielectrics. "2007 International Conference on Solid Dielectrics". Winchester: , p. 63-66.
dc.identifier.isbn1-4244-0750-8
dc.identifier.urihttp://hdl.handle.net/2117/6810
dc.description.abstractThe analysis by TSDC of a large variety of cables subjected to long annealing times, has resulted in spectra that sometimes show an oscillation of the current peak observed at 99°C. This process has been observed in some cables only and it is scarcely reproducible. We present an explanation of this behavior based on the formation of charge packets and some other assumptions: charge injection occurs mainly from the negative electrode, and chemical components that act as trapping centers are diffused continously from the semiconducting layers into the bulk during annealing. When the field is applied the negative electrode injects charge that get trapped in these centers, so that a virtual electrode is formed. The electric field created by this layer results in a decrease of the field in the gap between the injecting and virtual electrodes, preventing new charge injection. On the other hand, during polarization the virtual electrode shifts through the insulation bulk towards the opposite electrode. This layer that acts as a virtual electrode becomes neutral by means of recombination when it reaches the opposite electrode, so that the electric field in the region between the electrodes recovers its initial value and the whole process happens again cyclically. This model can explain the observed TSDC oscillating spectra of annealed samples. It can also explain why the oscillations can not be observed in most cases.
dc.format.extent4 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Energies::Energia elèctrica::Electricitat
dc.subject.lcshElectrodes
dc.subject.lcshElectric cables
dc.subject.lcshOscillations
dc.titleA model to explain the TSDC spectrum of XLPE insulation in mid voltage cables based on a virtual electrode
dc.typeConference lecture
dc.subject.lemacElèctrodes
dc.subject.lemacCables elèctrics
dc.subject.lemacOscil·lacions
dc.contributor.groupUniversitat Politècnica de Catalunya. DILAB - Laboratori de física dels materials dielèctrics
dc.identifier.dlLIBRARY OF cONGRESS: 2006935490
dc.relation.publisherversionhttp://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4290753&tag=1
dc.rights.accessOpen Access
local.identifier.drac2408397
dc.description.versionPostprint (published version)
local.citation.authorBelana, J.; Diego, J.; Orrit, J.; Mudarra, M.
local.citation.contributorInternational Conference on Solid Dielectrics
local.citation.pubplaceWinchester
local.citation.publicationName2007 International Conference on Solid Dielectrics
local.citation.startingPage63
local.citation.endingPage66


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