Effect of antioxidants on DC tree and grounded DC tree in XLPE

被引：1
|
作者：
Chiba Institute of Technology, 2-17-1, Tsudanuma, Narashino 275-0016 [1 ]
不详 [2 ]
机构：
来源：
IEEJ Trans. Fundam. Mater. | 2006年 / 5卷 / 363-368期
关键词：
DC machinery - Electric charge - Electric potential - Initiators (chemical) - Sulfur - Topology;
D O I：
10.1541/ieejfms.126.363
中图分类号：
学科分类号：
摘要：
To study the effects of antioxidants on the initiation of the DC tree and the grounded DC tree, experiments were conducted using XLPE specimens containing phenolic and sulfur type antioxidants. Experimental results showed that sulfur type antioxidants in XLPE have the effect of increasing inception voltages of both the DC tree and the grounded DC tree. Based on results of those experiments, the mechanism of increase in the inception voltage of the DC tree and the grounded DC tree by antioxidants was examined along with the mechanism of polarity effects on those trees. Results showed a promotional effect of charge injection from a needle electrode by antioxidants, which are responsible for the increased inception voltages of the DC tree. Charge trapping by antioxidants explains the increase of inception voltages of the grounded DC tree.
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