Diagnostic markers for ac power cable insulation aging based on space charge measurements

被引：3
|
作者：
Montanari, GC [1 ]
Fabiani, D [1 ]
Melloni, M [1 ]
Palmieri, F [1 ]
机构：
[1] Univ Bologna, DIE LIMAT 1, Bologna, Italy
来源：
CONFERENCE RECORD OF THE 2002 IEEE INTERNATIONAL SYMPOSIUM ON ELECTRICAL INSULATION | 2002年
关键词：
D O I：
10.1109/ELINSL.2002.995975
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 results of space charge measurements carried out on specimens cut from high-voltage XLPE cables are discussed in this paper. The specimens were aged in laboratory under electrical, thermal and thermoelectrical stresses, for various times, with the purpose of searching for diagnostic indicators derived from space charge data. It is shown that two quantities extracted from space charge measurements, that is, the threshold for space charge accumulation and the apparent, trap-controlled, mobility display a good correlation with aging time and stress, thus providing interesting markers for aging diagnosis and life estimation. Aging models are proposed correlating markers with aging time.
引用
收藏
页码：464 / 467
页数：4
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