Study of Transformer Harmonic Loss Characteristic in Distribution Network Based on Field-Circuit Coupling Method

Xiping Ma (), Rong Jia, Chen Liang, Haodong Du, Xiaoyang Dong and Man Ding
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Xiping Ma: School of Electrical Engineering, Xi’an University of Technology, Xi’an 710048, China
Rong Jia: School of Electrical Engineering, Xi’an University of Technology, Xi’an 710048, China
Chen Liang: Electric Power Research Institute, State Grid Gansu Electric Power Company, Lanzhou 730050, China
Haodong Du: School of Electrical Engineering, Xi’an University of Technology, Xi’an 710048, China
Xiaoyang Dong: Electric Power Research Institute, State Grid Gansu Electric Power Company, Lanzhou 730050, China
Man Ding: School of Electrical Engineering, Xi’an University of Technology, Xi’an 710048, China

Sustainability, 2022, vol. 14, issue 20, 1-18

Abstract: One of the primary causes of additional losses in dry-type distribution transformers is harmonic disturbances in the distribution network. It is critical to investigate the change law of trans-former losses under harmonic conditions. The effect of harmonics on transformer core losses and winding losses is first investigated in this paper. The field-circuit coupling method is then used to create a finite element model of a three-phase phase dry type distribution transformer. Finally, the relationship between core loss and harmonic voltage, winding loss and harmonic current is calculated and analyzed for each harmonic frequency. The AC resistance factor model is found to be more accurate than the conventional model in calculating transformer harmonic winding losses. This paper’s findings have significant theoretical implications for the analysis of harmonic losses and loss reduction in distribution networks.

Keywords: dry distribution transformer; harmonic loss; field-circuit coupling; finite element model (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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