A contribution to the study of aging of XLPE insulated cables

Author

Motori, Antonio ; Sandrolini, FRANCO ; Montanari, Gian Carlo

Author_Institution

Bologna Univ., Italy

Volume

6

Issue

1

fYear

1991

fDate

1/1/1991 12:00:00 AM

Firstpage

34

Lastpage

42

Abstract

The electrical, thermal, and multiple-stress (thermal and electrical) aging of cross-linked polyethylene (XLPE) cable models has been investigated in order to get information on aging effects and mechanisms. After endurance tests, XLPE cable models have been subjected to chemical, physical, electrical, and microstructural characterization. Thermal aging results reveal that bulk degradation occurs in the cables at temperatures higher than the melting point. Multiple-stress aging data emphasize a synergistic effect of electric field and temperature. Significant microstructural changes detected in the cables aged under multiple stress are evidence of this effect and can partly explain the time behavior of the electric strength

Keywords

ageing; cable insulation; organic insulating materials; polymers; power cables; XLPE insulated cables; aging; chemical characterization; cross-linked polyethylene; electric characterization; electric field; electric strength; electrical stress; endurance tests; microstructural characterization; multiple-stress; physical characterization; thermal stress; Aging; Cable insulation; Cables; Density measurement; Electric variables measurement; Life testing; Performance evaluation; Scanning electron microscopy; Temperature; Thermal stresses;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.103719

Filename

103719