DocumentCode
3259852
Title
Dielectric model of water trees in an XLPE cable
Author
Dubickas, Valentinas ; Edin, Hans
Author_Institution
Sch. of Electr. Eng., R. Inst. of Technol., Stockholm
fYear
2008
fDate
7-11 Sept. 2008
Firstpage
448
Lastpage
451
Abstract
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.
Keywords
cables (electric); conducting polymers; inclusions; permittivity; trees (electrical); Maxwell stress; XLPE cable; cylindrical water channel; dielectric spectroscopy; permittivity; water inclusion; water-tree degraded insulation; Aging; Cable insulation; Degradation; Dielectric measurements; Dielectrics and electrical insulation; Electrochemical impedance spectroscopy; Permittivity measurement; Stress; Trees - insulation; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Electrical Insulating Materials, 2008. (ISEIM 2008). International Symposium on
Conference_Location
Mie
Print_ISBN
978-4-88686-005-7
Electronic_ISBN
978-4-88686-006-4
Type
conf
DOI
10.1109/ISEIM.2008.4664582
Filename
4664582
Link To Document