Improvement of high voltage direct current material properties upon tailoring the morphology of crosslinked polyethylenes

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dc.contributor.authorNiedik, Christoph Felix
dc.contributor.authorJenau, Frank
dc.contributor.authorMaricanov, Michail
dc.contributor.authorSegiet, Dominik
dc.contributor.authorTiller, Jörg Christian
dc.contributor.authorKatzenberg, Frank
dc.date.accessioned2022-03-18T12:03:07Z
dc.date.available2022-03-18T12:03:07Z
dc.date.issued2021-09-12
dc.description.abstractCrosslinked linear low-density polyethylene (XLPE) is the most common polymeric cable insulation material for high-voltage applications with a high number of operating hours in high voltage alternating current (HVAC) systems. High voltage direct current (HVDC) power transmission and polymeric cable systems play a major role in the future and raise, besides numerous systemic benefits, challenges in the design of material properties. The main issue is injection and trapping of space charges in insulation materials under DC-fields. The objective of this work is to increase knowledge of the interplay between microstructure and material performance of XLPE under DC by tailoring its morphology beyond the capabilities of “common crystallization kinetics” upon constrained crystallization at certain elongations. It was found that the tailored oriented morphology influences the energetic depth of traps and a significant reduction of space charge density occurs. Moreover, the optimized oriented morphology leads to a significant reduction of field enhancement for field strengths ELaplace ≥ 20 kV mm−1 compared to unoriented XLPEs with spherulitic morphology. It is shown that this way of morphology tailoring results in a considerable, material dependent reduction of field exposure by a factor of 4, which promises a significant improvement in the electrical life time of polymeric insulation material used.en
dc.identifier.urihttp://hdl.handle.net/2003/40806
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-22663
dc.language.isoende
dc.relation.ispartofseriesPolymer crystallization;4(6)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectHVDCen
dc.subjectMorphology tailoringen
dc.subjectPolymer insulationen
dc.subjectSpace charge phenomenaen
dc.subject.ddc660
dc.titleImprovement of high voltage direct current material properties upon tailoring the morphology of crosslinked polyethylenesen
dc.typeTextde
dc.type.publicationtypearticlede
dcterms.accessRightsopen access
eldorado.secondarypublicationtruede
eldorado.secondarypublication.primarycitationNiedik, C. F., Jenau, F., Maricanov, M., Segiet, D., Tiller, J. C., Katzenberg, F., Polym. Cryst. 2021, 4( 6), e10208. https://doi.org/10.1002/pcr2.10208de
eldorado.secondarypublication.primaryidentifierhttps://doi.org/10.1002/pcr2.10208de

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