Acoustic method for quality control and in-service periodic monitoring of medium voltage cable terminations

Author

Lundgaard, Lars E. ; Hansen, Walter

Author_Institution

Energy Res., SINTEF, Trondheim, Norway

Volume

1

fYear

1998

Firstpage

130

Abstract

The main part of outages in the distribution grid caused by cable terminations and joints has been preceded by a period with internal partial discharges. As a tool for condition based maintenance, a method for on-line periodic discharge measurement based on ultrasound detection of signals emitted from the discharges has been developed. The method has a sensitivity in the 5-50 pC range depending on the design of the termination

Keywords

XLPE insulation; acoustic emission testing; condition monitoring; electric connectors; insulation testing; maintenance engineering; partial discharge measurement; power cable insulation; power cable testing; quality control; ultrasonic applications; AE transducer; XLPE; acoustic method; condition based maintenance; distribution grid outages; field measurements; in-service periodic monitoring; internal partial discharges; medium voltage cable terminations; on-line periodic discharge measurement; quality control; ultrasound detection; Absorption; Acoustic sensors; Fault location; Frequency; Medium voltage; Monitoring; Probes; Quality control; Surface acoustic waves; Surface discharges;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 1998. Conference Record of the 1998 IEEE International Symposium on

Conference_Location

Arlington, VA

ISSN

1089-084X

Print_ISBN

0-7803-4927-X

Type

conf

DOI

10.1109/ELINSL.1998.704680

Filename

704680