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| The Mechansim and Experiment Analysis of DC Magnetic Bias Caused by Rectifier Transformer of AC Grid |
| Liu Mingjun, Cheng Chen, Zhao Kejiang, Zhang Zuopeng, Cheng Zhengyu |
| State Grid Chongqing Electric Power Co. Maintenance Branch Company, Chongqing 400039 |
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Abstract In power transformer, DC magnetic bias cannot be ignored. According to the situation of DC magnetic bias in Chongqing electric power network, the reason of DC magnetic bias is studied. Analysis of the rectifier transformer in working process due to commutation valve trigger the unbalance, AC side of the second harmonic voltage of positive sequence and produces a DC and flow into the power grid, to power in the substation caused by the influence of DC biasing. Using the corresponding measures, the DC magnetic bias of the transformer is measured and the effect of the rectifier transformer on the DC magnetic bias is demonstrated.
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Received: 22 June 2016
Published: 22 June 2016
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| Cite this article: |
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Liu Mingjun,Cheng Chen,Zhao Kejiang等. The Mechansim and Experiment Analysis of DC Magnetic Bias Caused by Rectifier Transformer of AC Grid[J]. Electrical Engineering, 2016, 17(6): 93-96.
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| URL: |
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http://dqjs.cesmedia.cn/EN/Y2016/V17/I6/93
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2016, Vol. 17 
