A Study of Relationship between Space Charge formation and Breakdown in Low density Polyethylene under Ultra-high Electric Field
超高电场下低密度聚乙烯空间电荷形成与击穿关系的研究
基本信息
- 批准号:18560315
- 负责人:
- 金额:$ 2.35万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2006
- 资助国家:日本
- 起止时间:2006 至 2007
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
An electric power transmission cable using a crosslinked polyethylene(XLPE) as an insulating layer is widely used for AC power transmission system. However, it is not used for DC long distance cable because an unexpected breakdown sometimes occurs in the insulating layer under high DC stress. The reason for the unexpected breakdown is said that, so called, a space charge is accumulated in the bulk of insulating layer under high electric DC stress and it distorts the electric field distribution. While many researchers had attempted to find out the evidence of the above mechanism, any clear experimental result to show the mechanism directly had not been obtained. However, the authors have succeeded in observing a clear result that a huge packet-like space charge generates under ultra-high applied electric field and it distorts the electric field in the bulk of insulating layer. In this investigation, the authors to try the mechanism of the generation of the packet-like charge using a numerical analysis. Furthermore, the authors have tried to suppress to generate the packet-like charge by adding a nano-size filler in the insulating material. Finally, the authors find out that the deference of the permittivities between the filler and the base polymer material may be the reason for the suppression of packet-like charge generation.
以交联聚乙烯(XLPE)为绝缘层的电力传输电缆广泛应用于交流输电系统。然而,由于在高直流应力下,绝缘层有时会发生意外击穿,因此不适用于直流长途电缆。所谓意外击穿的原因是,在高直流电场应力下,绝缘层主体中积累了空间电荷,从而扭曲了电场分布。虽然许多研究人员试图找出上述机制的证据,但还没有得到任何明确的实验结果来直接说明这一机制。然而,作者成功地观察到了一个明显的结果,即在超高电场下产生巨大的包状空间电荷,并使绝缘层主体内的电场发生扭曲。在这项研究中,作者尝试用数值分析的方法来解释包状电荷的产生机理。此外,作者还试图通过在绝缘材料中添加纳米级填料来抑制产生包状电荷。最后,作者发现,填充物和基材之间的介电常数的差异可能是抑制包状电荷产生的原因。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Analysis ofPacket-like SpaceChargeBehavior inLow-density Polyethylene
低密度聚乙烯中的包状空间电荷行为分析
- DOI:
- 发表时间:2007
- 期刊:
- 影响因子:0
- 作者:Y. Tanaka;K. Mastui;T. Takada
- 通讯作者:T. Takada
Space charge trapping in electrical potential well caused by permanent and induced dipoles for LDPE/MgO nanocomposite
- DOI:10.1109/t-dei.2008.4446746
- 发表时间:2008-02-01
- 期刊:
- 影响因子:3.1
- 作者:Takada, Tatsuo;Hayase, Yuji;Okamoto, Tatsuki
- 通讯作者:Okamoto, Tatsuki
Pulse Acoustic Technology for Measurement of Charge Distribution in Dielectric Materials for Spacecraft
- DOI:10.1109/tps.2006.883289
- 发表时间:2006-10
- 期刊:
- 影响因子:1.5
- 作者:T. Takada;H. Miyake;Y. Tanaka
- 通讯作者:T. Takada;H. Miyake;Y. Tanaka
Space Charge Formation in LDPE/MgO Nano-composite Thin Film under Ultra-high DC Electric Stress
- DOI:10.1541/ieejfms.126.1084
- 发表时间:2006-06
- 期刊:
- 影响因子:0
- 作者:Y. Hayase;H. Aoyama;Y. Tanaka;T. Takada;Y. Murata
- 通讯作者:Y. Hayase;H. Aoyama;Y. Tanaka;T. Takada;Y. Murata
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TANAKA Yasuhiro其他文献
TANAKA Yasuhiro的其他文献
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20591993 - 财政年份:2008
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- 批准号:
16560280 - 财政年份:2004
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New strategy for developing surface-treated functional titanium based on nano-structure and electronic state analyses
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15592055 - 财政年份:2003
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08650390 - 财政年份:1996
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