Method to choose HV cable insulating materials and to characterize their aging

A method to characterize insulating materials is to inject a known quantity of charges into the insulation and to evaluate the electrical potential built up around the zone where charges are injected. If density of injected charges is relevant with respect to charge density which can be sustained by...

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Bibliographic Details
Main Authors: Janah, H., Bezille, J., Becker, J.
Format: Conference Proceeding
Language:English
Subjects:
Aging
Cable insulation
Capacitive sensors
Dielectric breakdown
Dielectric materials
Dielectrics and electrical insulation
Electric breakdown
Electric potential
Polyethylene
Space charge
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Summary:A method to characterize insulating materials is to inject a known quantity of charges into the insulation and to evaluate the electrical potential built up around the zone where charges are injected. If density of injected charges is relevant with respect to charge density which can be sustained by the material, the method is able to point out, notably, the evolution of its dielectric characteristics when submitted to an electrical and/or thermal aging. This paper deals with the comparison of detrapping field of two materials for a given implantation condition. The evolution of this characteristic within the insulation thickness of an HV cable is also characterized.
DOI:10.1109/CEIDP.1994.591749