Study on DC component caused by water treeing in XLPE cable

被引：0
|
作者：
Zhang, CX [1 ]
Sheng, SG [1 ]
Yang, JX [1 ]
Chi, XC [1 ]
机构：
[1] Harbin Univ Sci & Technol, Harbin 150040, Peoples R China
来源：
2002 ANNUAL REPORT CONFERENCE ON ELECTRICAL INSULATION AND DIELECTRIC PHENOMENA | 2002年
关键词：
XLPE; water tree; DC component;
D O I：
暂无
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：
In this paper, based on the possible mechanism of DC component production, a set for measurement of DC component in the piece of aging XLPE cable insulation has been designed in laboratory. The AC component of the current in the insulation is much lager than the DC component and the main problem is therefore to filter the AC component or to strength the DC component. And then a sensitive DC component measuring system can be gotten. During experiment, a bypass capacitor is used to filter the AC component and an additional direct voltage source is used to strength the DC component. The results of experiment indicate that the DC component is correlated with the ageing degree of XLPE insulation. They also show that the value of DC component varies with the amount of high AC voltage applied. The experimental results are helpful to realize a hot fine diagnose system about water tree in XLPE insulation cable.
引用
收藏
页码：926 / 929
页数：4
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