Analysis of transformer bias vibration based on "magnetic-mechanical" coupling

Junqiang  Xing; Zhuwen  Dai; Wendi  Yu; Yunshuo  Zhang

doi:10.6180/jase.202404_27(4).0014

Analysis of transformer bias vibration based on "magnetic-mechanical" coupling

Junqiang XingThis email address is being protected from spambots. You need JavaScript enabled to view it., Zhuwen Dai, Wendi Yu, Yunshuo Zhang

School of Electrical Engineering, Shenyang Institute of Engineering, Shenyang, Liaoning, 110136, China

Received: February 23, 2023
Accepted: June 26, 2023
Publication Date: September 28, 2023

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202404_27(4).0014

The large-scale application of flexible DC power transmission technology leads to DC bias in transformer cores, and the vibration analysis of transformers under the influence of DC bias is becoming a hot topic. In this paper, based on the "electromagnetic-mechanical" coupling model, we propose a bias vibration analysis method for large power transformers. The electromagnetic forces calculated in the electromagnetic field are mapped to the surfaces of structural members and tanks in the structural force field by means of a grid mapping method, facilitating the direct calculation of transformer vibration displacements under DC bias conditions. Finally, based on the coupled magnetic-structural analysis, the maximum deformation of different structures of the transformer under different DC bias magnetism is studied. The vibration response band of the transformer is above 100Hz, where the DC input of 25A per phase causes the maximum displacement deformation of 39.06mm in the transformer tank, which provides the analysis basis for the safe operation of the transformer.

Keywords: transformer, vibration, DC bias, magnetic, mechanical

[1] J. Pallot, C. Ekanayake, H. Ma, and L. Naranpanawe, (2022) “Application of operational modal analysis to investigate transformer vibration patterns" IET Generation, Transmission & Distribution 16(10): 1964–1973. DOI: 10.1049/gtd2.12406.
[2] F. Zhang, S. Ji, Y. Shi, C. Zhan, and L. Zhu, (2019) “Investigation on vibration source and transmission characteristics in power transformers" Applied Acoustics 151: 99–112. DOI: 10.1016/j.apacoust.2019.03.011.
[3] Y. Hu, J. Zheng, and H. Huang, (2019) “Experimental research on power transformer vibration distribution under different winding defect conditions" Electronics 8(8): 842. DOI: 10.3390/electronics8080842.
[4] P. Jiang, Z. Zhang, J. Zhang, B. Deng, J. Deng, and Z. Pan, (2022) “Research on vibration characteristics and Multi-parameter state recognition of±500 kV converter transformer under fluctuating conditions" International Journal of Electrical Power & Energy Systems 136: 107748. DOI: 10.1016/j.ijepes.2021.107748.
[5] X. Liu, C. Sun, Y. Wang, F. Jiang, and C. Zhang, (2021) “Vibration characteristic analysis of transformers influenced by DC bias based on vibration half-wave energy method" International Journal of Electrical Power & Energy Systems 128: 106725. DOI: 10.1016/j.ijepes. 2020.106725.
[6] S. Jin. “Analysis of Vibration Characteristic of SinglePhase Three-Limb Transformer under DC Bias”. In: IOP Conference Series: Materials Science and Engineering. 677. 5. IOP Publishing. 2019, 052060. DOI: 10.1088/1757-899X/677/5/052060.
[7] Z. Zhang, S. Xu, J. Zhang, H. Liu, X. Huang, Z. Wang, and L. Zhao. “Study on vibration noise signal characteristics of 10kv distribution transformer under different load conditions”. In: IOP Conference Series: Materials Science and Engineering. 486. 1. IOP Publishing. 2019, 012033. DOI: 10.1088/1757-899X/486/1/012033.
[8] H. Wang, L. Zhang, Y. Sun, G. Wang, and L. Zou, (2022) “A Vibration Similarity Model of Converter Transformers and Its Verification Method" Symmetry 14(1): 143. DOI: 10.3390/sym14010143.
[9] H. Deng, H. Shi, and Y. Qi. “Test Research on Vibration State of Transformer in High Speed EMU”. In: Journal of Physics: Conference Series. 1678. 1. IOP Publishing. 2020, 012029. DOI: 10.1088/1742-6596/1678/1/012029.
[10] Z. Zhang, Y. Wu, S. Zhang, P. Jiang, and H. Ye. “Online monitoring research of transformer vibration based on labview”. In: Journal of Physics: Conference Series. 1168. 2. IOP Publishing. 2019, 022083. DOI: 10.1088/1742-6596/1168/2/022083.
[11] X. Liu, Y. Yang, Y. Huang, and A. Jadoon, (2018) “Vibration characteristic investigation on distribution transformer influenced by DC magnetic bias based on motion transmission model" International Journal of Electrical Power & Energy Systems 98: 389–398. DOI: 10.1016/j.ijepes.2017.12.032.
[12] X. Miao, P. Jiang, F. Pang, Y. Tang, H. Li, G. Qu, and J. Li, (2023) “Numerical analysis and experimental research of vibration and noise characteristics of oilimmersed power transformers" Applied Acoustics 203: 109189. DOI: 10.1016/j.apacoust.2022.109189.