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

被引：0
|
作者：
Lundgaard, LE
Hansen, W
机构：
来源：
CONFERENCE RECORD OF THE 1998 IEEE INTERNATIONAL SYMPOSIUM ON ELECTRICAL INSULATION, VOLS 1 AND 2 | 1998年
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中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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.
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页码：130 / 133
页数：4
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