Surge-induced temperature rise in water-containing defects in XLPE: mechanism for conversion of water trees to electrical trees

Author

Boggs, Steven ; Densley, John ; Kuang, Jinbo

Author_Institution

Electr. Insulation Res. Center, Connecticut Univ., Storrs, CT, USA

Volume

1

fYear

1996

fDate

20-23 Oct 1996

Firstpage

311

Abstract

Circumstantial evidence suggests that large water trees convert to electrical trees as a result of lightning-induced surges. Computations employing transient nonlinear finite element analysis suggest that such conversion involves boiling of the water which results in creation of a cavity which can support partial discharge

Keywords

XLPE insulation; electrical conductivity; finite element analysis; partial discharges; power cable insulation; space charge; surges; transients; trees (electrical); PD initiation; XLPE cable insulation; cavity creation; electrical trees; finite element analysis; lightning-induced surges; partial discharge; surge-induced temperature rise; transient nonlinear FEA; water boiling; water tree to electrical tree conversion; water trees; water-containing defects; Conductivity; Lightning; Partial discharges; Polymers; Surges; Temperature; Thermal stresses; Trees - insulation; Underwater tracking; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1996., IEEE 1996 Annual Report of the Conference on

Conference_Location

Millbrae, CA

Print_ISBN

0-7803-3580-5

Type

conf

DOI

10.1109/CEIDP.1996.564689

Filename

564689