Title :
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
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;
Conference_Titel :
Electrical Insulation, 1998. Conference Record of the 1998 IEEE International Symposium on
Conference_Location :
Arlington, VA
Print_ISBN :
0-7803-4927-X
DOI :
10.1109/ELINSL.1998.704680
