| 引用本文: | 潘 超,王梦纯,蔡国伟,徐冰亮,郝文波.单相变压器在不同直流注入方式下的偏磁效应[J].电力自动化设备,2014,34(8): |
| PAN Chao,WANG Mengchun,CAI Guowei,XU Bingliang,HAO Wenbo.DC-bias effect of single-phase transformer in different DC-injection modes[J].Electric Power Automation Equipment,2014,34(8): |
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| 摘要: |
| 利用时域场路耦合方法分析了不同直流注入方式对变压器交流励磁的影响，将变压器直流偏磁计算转换为场的耦合计算和路的耦合计算，用场模型计算动态电感，以路模型求解时域过程，通过计算耦合参数分析变压器电磁参数在直流扰动下的变化规律，对比了不同直流注入方式对变压器偏磁效应的影响。最后将仿真计算与实验结果对比，结果验证了理论分析的正确性。 |
| 关键词: 变压器 直流偏磁 注入方式 时域场路耦合 时域分析 励磁 磁场 模型 |
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| 基金项目:基金项目：国家高技术研究发展计划（863计划）资助项目（SS-2014AA052502）；长江学者和创新团队发展计划资助项目（IRT114） |
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| DC-bias effect of single-phase transformer in different DC-injection modes |
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PAN Chao1, WANG Mengchun1, CAI Guowei1, XU Bingliang2, HAO Wenbo2
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1.School of Electrical Engineering，Northeast China Dianli University，Jilin 132012，China;2.Heilongjiang Electric Power Research Institute，Harbin 150030，China
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| Abstract: |
| The time-domain field-circuit coupling method is applied to analyze the effect of different DC injection modes on AC excitation of electric transformer. The computation of DC bias is divided into the computations of field-circuit coupling. The magnetic field model is applied to calculate the dynamic inductance and the electric circuit model to solve the time-domain process. The coupling parameters are calculated for analyzing the laws of transformer electromagnetic parameter variation under DC bias and the effects of different DC-injection modes on the transformer DC bias are compared. The simulative and experimental results are compared，verifying the correctness of theoretical analysis. |
| Key words: electric transformers DC bias injection method time-domain magnetic field-circuit coupling time domain analysis electric excitation magnetic fields models |
