Space charge characteristics in two-layer oil-paper insulation

被引：11
|
作者：
Zhou, Yuanxiang [1 ]
Huang, Meng [1 ]
Sun, Qinghua [1 ]
Sha, Yanchao [1 ]
Jin, Fubao [1 ]
Zhang, Ling [1 ]
机构：
[1] Tsinghua Univ, Dept Elect Engn, State Key Lab Power Syst & Generat Equipment, Beijing 100084, Peoples R China
来源：
JOURNAL OF ELECTROSTATICS | 2013年 / 71卷 / 03期
关键词：
Space charge; Oil-paper; PEA method; Interface; Potential barrier; POLYETHYLENE;
D O I：
10.1016/j.elstat.2012.12.024
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：
Space charge is a key insulation problem of HVDC equipment. In this paper, the influence of voltage polarity and electrode material were studied by the pulse electroacoustic (PEA) method. It had been found that the type of space charge accumulating at the interface was the same with the voltage polarity. With different electrode materials, the space charge injection was consequently different, but not evident. The interface made the drift velocity slower in two-layer samples. It suggested that the interface had a significant impact on space charge distribution and the contact state was complex, so a modified Maxwell-Wagner model was proposed. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：413 / 417
页数：5
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