基于J-A模型对直流偏磁条件下变压器励磁电流的模拟及实验研究

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Abstract Aimed at issues that the resulting excitation current distort, harmonic and loss increase when DC magnetic bias occur on power transformers, this paper started from the production mechanism of DC magnetic bias, based on theory of J-A model, from the view of energy balance principle, current excitation current and hysteresis loop of transformer core without DC magnetic bias and under DC magnetic bias were simulated and experiment researched by using the model. The discussion mainly focused on principle of J-A model parameter and parameter identification. Simulation and experiment results show that the model can well describe waveform characteristics of excitation current and hysteresis loop of the transformer core under DC magnetic bias, it had provide an effective approach for the study of power transformers performance under DC magnetic bias.

Key words： DC magnetic bias power transformer excitation current J-A hysteresis model

Received: 11 October 2013 Published: 22 May 2014

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TM46

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	Bai Baodong
	Zhao Xiaoxuan
	Chen Dezhi
	Wang Jiayin
	Li Baopeng

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Bai Baodong,Zhao Xiaoxuan,Chen Dezhi等. Simulation and Experiment Research on Transformer Excitation Current under DC Magnetic Bias Based on J-A Model[J]. Transactions of China Electrotechnical Society, 2013, 28(2增): 162-166.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I2增/162

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