Dielectric response measurement as diagnostic tool for power cable systems

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Increase in moisture is a common source of deterioration of insulation properties and premature aging of an oil-paper insulated system. This paper presents preliminary results of dielectric response measurement with diagnostic tools for power cable and systems. Several testing methods, such as tana measurement over a certain frequency range (also known as frequency doman dielectric spectroscopy), are discussed, as is the relationship between moisture content and time.

Description

Increase in moisture is a common source of deterioration of insulation properties and premature aging of an oil-paper insulated system. This paper presents preliminary results of dielectric response measurement with diagnostic tools for power cable and systems. Several testing methods, such as tana measurement over a certain frequency range (also known as frequency doman dielectric spectroscopy), are discussed, as is the relationship between moisture content and time.

Additional information

Author(s)

Bolarin S. Oyegoke, Petri Hyvonen and Martti Aro, Helsinki University of Technology, Finland

Publication/Event/Pages

Paper presented at WAI 72nd Annual Convention, Chicago, IL USA. Paper published in Wire Journal International, April 2003, pg. 106.

Year

2002