Electrical conduction measurements in aged cables and compensation effect

Author

Montanari, G.C. ; Motori, A.

Author_Institution

Istituto di Elettrotecnica Ind., Bologna Univ., Italy

fYear

1995

fDate

10-13 Jul 1995

Firstpage

23

Lastpage

27

Abstract

The presence of a compensation effect in the electrical conductivity of aged XLPE-insulated cable models is investigated. It is shown that the logarithm of the pre-exponential term and the thermal activation energy of the steady DC conduction process are linearly related, according to the compensation effect, when cable models aged for different times and under different stresses are considered. This result improves when the actual steady DC conductivity, estimated by an appropriate model, is taken into account

Keywords

XLPE insulation; ageing; cable insulation; electrical conductivity; thermal stresses; aged XLPE-insulated cable models; aged cables; compensation effect; electrical conduction measurements; electrical conductivity; logarithm; pre-exponential term; steady DC conduction process; stresses; thermal activation energy; Aging; Cables; Conducting materials; Conductivity measurement; Electric variables measurement; Life testing; Temperature dependence; Thermal conductivity; Thermal stresses; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Conduction and Breakdown in Solid Dielectrics, 1995. ICSD'95., Proceedings of the 1995 IEEE 5th International Conference on

Conference_Location

Leicester

Print_ISBN

0-7803-2040-9

Type

conf

DOI

10.1109/ICSD.1995.522942

Filename

522942