| 电力变压器偏磁试验电源研制 |
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| 引用本文： | 何大清,蔡旭,金之俭,王丰华.电力变压器偏磁试验电源研制[J].电力电子技术,2011,45(1):83-84,87. |
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| 作者姓名： | 何大清 蔡旭 金之俭 王丰华 |
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| 作者单位： | 1. 上海交通大学,风力发电研究中心,上海,200240
2. 上海交通大学,海洋工程国家重点实验室,上海,200240 |
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| 基金项目： | 海洋工程国家重点实验室基金(AE010803); 上海市科技发展基金(08DZ1200504,09DZ1201303)~~ |
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| 摘 要： | 分析了电力变压器磁化产生的原因、现象和危害,阐述了对变压器在带电状态下的磁化现象进行研究的必要性:提出一种新的测试电路连接方式,试验电源可避免直接承受高压,同时能向变压器注入连续可调的直流电流:通过分析磁化后励磁电流和磁通的关系,说明磁化现象产生的原因;通过建立等效电路,并结合磁化电流谐波组成,分析了回路中的电流成分,...
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| 关 键 词： | 电力变压器 磁饱和 励磁电流 |
Design of Power Supply for Testing on Power Transformer of DC Bias |
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| HE Da-qing,CAI Xu,JIN Zhi-jian,WANG Feng-hua.Design of Power Supply for Testing on Power Transformer of DC Bias[J].Power Electronics,2011,45(1):83-84,87. |
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| Authors: | HE Da-qing CAI Xu JIN Zhi-jian WANG Feng-hua |
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| Affiliation: | HE Da-qing,CAI Xu,JIN Zhi-jian,WANG Feng-hua(Shanghai Jiao Tong University,Shanghai 200240,China) |
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| Abstract: | The paper briefly introduces magnetic saturation of transformer about cause,phenomenon and damage for power transformer and the importance of studying of such characteristics,and proposes a topology of testing power transformer's magnetic saturation,in which a DC power source can inject DC current into transformer and avoid en-during high voltage.By analyzing relationship between magnetic current and magnetic flux,the causes are made clear for magnetic phenomenon.The main components and harmonics of current... |
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| Keywords: | power transformer magnetic saturation exciting-current |
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