Dielectric model of water trees in an XLPE cable
2008 (English)In: International Symposium on Electrical Insulating Materials (ISEIM 08), Yokkaichi, Japan, 2008, 448-451 p.Conference paper (Refereed)
In this paper a water-tree degraded insulation is modeled as a matrix composed of cubic cells. In the model there are three types of cells: pure XLPE, XLPE with water inclusion and the XLPE cell with a cylindrical water channel. Voltage dependant dielectric properties of the water-trees are modeled by an elongation of the inclusions and appearance of the conducting channels caused by the Maxwell stress. Afterwards the modeled effective permittivity of the insulation matrix is compared with the dielectric spectroscopy measurements of a field aged XLPE cable.
Place, publisher, year, edition, pages
Yokkaichi, Japan, 2008. 448-451 p.
Water trees; model; dielectric permittivity; high voltage; XLPE; power cable
Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-9869DOI: 10.1109/ISEIM.2008.4664582ISI: 000262126300112ScopusID: 2-s2.0-58049105879ISBN: 978-4-88686-005-7OAI: oai:DiVA.org:kth-9869DiVA: diva2:134367
International Symposium on Electrical Insulating Materials Mie, JAPAN, SEP 07-11, 2008
QC 201007092009-01-202009-01-202011-03-25Bibliographically approved