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| Measurement and Analysis of Magnetizing Current in DC-Biased Transformers |
| Zhao Zhigang1, Liu Fugui1, Zhang Junjie2, Liu Lanrong2, Fan Yana2, Cheng Zhiguang2, Yan Weili1 |
| 1. Province-Ministry Joint Key Lab of Electromagnetic Field and Electrical Apparatus Reliability Hebei University of Technology Tianjin 300130 China 2. Baoding Tianwei Group Co. Ltd Baoding 071056 China |
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Abstract It is the key point for studying the magnetizing current in the transformer under dc-biased magnetization. A laminated core model of product level is presented to model the working state of transformer under dc-biased magnetization and the magnetizing current is investigated based on this core model. An engineering-oriented analysis method is proposed by means of Matlab commercial software for the calculation of the magnetizing current in dc-biased transformers. The method in this design is proved to be an effective and efficient one by comparing the calculated results with the measured ones.
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Received: 01 December 2009
Published: 04 March 2014
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[1] 王明新, 张强. 直流输电系统接地极电流对交流电网的影响分析[J]. 电网技术, 2005, 29(3): 9-14.
[2] 毛晓明, 吴晓辰. 南方交直流并联电网运行问题分析[J]. 电网技术, 2004, 28(2): 7-13.
[3] 丁明, 黄凯, 李生虎. 交直流混合输电系统的概率稳定性分析[J]. 中国电机工程学报, 2002, 22(8): 11-16.
[4] 毛晓明, 管霖, 张尧, 等. 含有多馈入直流的交直流混合输电电网高压直流建模研究[J]. 中国电机工程学报, 2004, 24(9): 68-73.
[5] 徐政. 含多个直流换流站的电力系统中交直流相互作用特性综述[J]. 电网技术, 1998, 22(2): 16-19.
[6] 李峰, 管霖, 钟杰峰, 等. 广东交直流混合电网的运行稳定性研究[J]. 电网技术, 2005, 29(11): 1-4.
[7] 朱艺颖, 蒋卫平, 曾昭华, 等. 抑制变压器中性点直流电流的措施研究[J]. 中国电机工程学报, 2005, 25(13): 1-7.
[8] 尚春. HVDC地中电流对交流变压器影响的抑制措施[J]. 高电压技术, 2004, 30(11): 52-54.
[9] 蒯狄正, 万达, 邹云. 直流输电地中电流对电网设备影响的分析与处理[J]. 电力系统自动化, 2005, 29 (2): 81-82.
[10] Yao Yingying, Chang Seop Koh, Ni Guangzheng, et al. 3-D nonlinear transient eddy current calculation of online power transformer under DC bias[J]. IEEE Transactions on Magnetics, 2005, 41(5): 1840-1843.
[11] Bíró O Auerhofer, Buchgraber S G, et al. Prediction of magnetising current waveform in a single-phase power transformer under DC bias[J]. IET Science, Measurement and Technology, 2007, 1(1): 2-5.
[12] 李晓萍, 文习山, 蓝磊, 等. 单相变压器直流偏磁实验与仿真[J]. 中国电机工程学报, 2007, 27(9): 33-40.
[13] 李慧奇, 崔翔, 侯永亮, 等. 直流偏磁条件下变压器励磁电流的实验研究及计算[J]. 华北电力大学学报, 2007, 34(4): 1-6. |
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2010, Vol. 25 
