直流偏磁下变压器振动的仿真及实验研究

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Abstract In this paper, the power transformer vibration problems caused by DC magnetic bias were studied. First, I have finished the simulation and modal experiment for the natural frequencies of transformer and given the basic theory of vibration measurements.On this basis, the vibration testing of transformer was also done. The waveforms of vibration displacement of measuring points in time domain and frequency domain, the trends of vibration intensity of measuring points and displacement RMS on different joints and DC magnetic bias conditions were given. Finally, summing up the basic laws of the transformer vibration on the basis of theory and experiment and obtaining the basic methods of reducing vibration. The experimental reference was provided for the vibration problems of large power transformers under the DC magnetic bias conditions.

Key words： DC magnetic bias transformer natural frequency vibration testing modal experiment

Received: 11 October 2013 Published: 22 May 2014

PACS:

TM46

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	Articles by authors
	Bai Baodong
	Liu Chuang
	Wang Jiayin

Cite this article:

Bai Baodong,Liu Chuang,Wang Jiayin. Simulation and Experimental Research of Transformer Vibration under DC Magnetic Bias[J]. Transactions of China Electrotechnical Society, 2013, 28(2增): 427-433.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I2增/427

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作者简介:白保东男, 1955年生, 教授, 博士生导师, 研究方向为工程电磁场、电磁兼容、医学永磁机构。刘闯男, 1988年生, 硕士研究生, 研究方向为大型电力变压器直流偏磁问题。