| 组合屏蔽层对电力变压器杂散损耗的影响 |
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| 引用本文： | 葛康,谢宝昌.组合屏蔽层对电力变压器杂散损耗的影响[J].科学技术与工程,2017,17(36). |
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| 作者姓名： | 葛康 谢宝昌 |
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| 作者单位： | 上海交通大学电子信息与电气工程学院,上海交通大学电子信息与电气工程学院 |
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| 摘 要： | 大容量单相电力变压器的箱体杂散损耗影响变压器效率和可靠性。通常采用箱体内壁敷设铁磁层的方法降低损耗,但铁磁叠片边界会使箱体局部磁场增强并产生局部过热。为此提出利用铁磁和非磁性导电层的不同组合屏蔽方法,并通过有限元仿真分析箱体和屏蔽层损耗,分析结果表明在优化屏蔽层厚度条件下纯导电层表面敷设一层铁磁材料,能有效降低总杂散损耗。
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| 关 键 词： | 单相电力变压器 组合屏蔽层 杂散损耗 有限元分析 |
| 收稿时间： | 2017/5/21 0:00:00 |
| 修稿时间： | 2017/7/21 0:00:00 |
Influence of Combination Shielding Layers on Stray Losses of Single-Phase Power Transformer |
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| gekang and xie bao chang.Influence of Combination Shielding Layers on Stray Losses of Single-Phase Power Transformer[J].Science Technology and Engineering,2017,17(36). |
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| Authors: | gekang and xie bao chang |
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| Institution: | School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University,School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University |
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| Abstract: | Stray loss of large single-phase power transformer tank influenced its efficiency and reliability. Magnetic material was usually attached on the inner wall of the transformer tank in order to reduce the stray loss. However, the magnetic field surrounding the ferromagnetic shielding was enhanced and resulted in local overheat of the tank. Various structures of ferro- and/or non-magnetic thin-layers are proposed and modeled by 2D and 3D finite element analysis (FEA) in this paper. Simulation results showed that the stray losses could be effectively reduced by using non-magnetically metallic layer between ferromagnetic layer and tank wall with optimal shielding thickness. |
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| Keywords: | single-phase power transformer combination shielding layers stray loss FEA |
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