油纸绝缘变压器新型混合极化电路模型及其参数计算

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Abstract With the aging of the oil-paper insulation system,the polarization responses would be more complex owing to a large number of aging products.In this case,the well known extended Debye model cannot reflect the relaxation process of the oil-paper insulation system actually.Therefore,a mixed polarization circuit model based on the equivalent circuit model and the extended Debye model is put forward.The proposed model can reflect the relaxation process of the oil-paper insulation system more actually.Secondly,the method for parameter identification is given,and the alignment method is adopted to confirm the branch number of the equivalent circuit.Finally,the results of example analysis and comparison confirm that the mixed polarization circuit model has higher accuracy than that of the ED equivalent circuit model,and the relaxation process of the insulation system is closer to the actual one.

Key words： Oil-paper insulation extended Debye equivalent circuit mixed polarization circuit parameter iden-tification

Received: 22 May 2015 Published: 18 September 2016

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TM835

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	Articles by authors
	Huang Yuncheng
	Cai Jinding
	Lu Jinyi

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Huang Yuncheng,Cai Jinding,Lu Jinyi. New Mixed Polarization Circuit Model and Parameters Identification of Oil-Paper Insulation Transformers[J]. Transactions of China Electrotechnical Society, 2016, 31(17): 170-177.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I17/170

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