变压器直流偏磁下异常电流表征振动特性研究

doi:10.19595/j.cnki.1000-6753.tces.190248

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Abstract DC disturbance vibration model of single-phase transformer and three-phase three- limb Yd transformer are established according to core vibration problem of transformer disturbed by DC. Winding current is identified based on electromagnetic coupling principle, and vibration harmonic response model was constructed to research vibration characteristics. Electromagnetic characteristics of transformer under different DC levels are simulated. Variation characteristics of winding abnormal current and core vibration acceleration under the influence of DC are analyzed, and summarizing rule. AC/DC hybrid dynamic model experimental platform of transformer is built to identify and collect the winding current and core vibration signals respectively. Experimental data are compared with simulation results to verify the correctness and effectiveness of the proposed method.

Key words： Transformer DC bias abnormal current core vibration harmonic response

Received: 12 March 2019 Published: 12 May 2020

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TM41

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	Pan Chao
	Su Hao
	Cai Guowei
	Chen Xiang

Cite this article:

Pan Chao,Su Hao,Cai Guowei等. Research on Characterization of Core Vibration by Abnormal Current of DC Bias Transformer[J]. Transactions of China Electrotechnical Society, 2020, 35(9): 1868-1879.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.190248 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I9/1868

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