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Volume 57 Issue 5
Oct.  2022
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Journal of Southwest Jiaotong University  > 2022  >  57(5): 976-981, 999.
WANG Tao, ZHANG Zhuang, ZHAO Kangfa, SHAO Kun, YOU Yonghua, YI Zhengming, HE Zhu, WU Da. Numerical Modeling of Dynamic Temperature Field for Air-Cooling Traction Transformers with Forced Oil Circulation[J]. Journal of Southwest Jiaotong University, 2022, 57(5): 976-981, 999. doi: 10.3969/j.issn.0258-2724.20200824
Citation: WANG Tao, ZHANG Zhuang, ZHAO Kangfa, SHAO Kun, YOU Yonghua, YI Zhengming, HE Zhu, WU Da. Numerical Modeling of Dynamic Temperature Field for Air-Cooling Traction Transformers with Forced Oil Circulation[J]. Journal of Southwest Jiaotong University, 2022, 57(5): 976-981, 999. doi: 10.3969/j.issn.0258-2724.20200824
shu

Numerical Modeling of Dynamic Temperature Field for Air-Cooling Traction Transformers with Forced Oil Circulation

doi: 10.3969/j.issn.0258-2724.20200824
  • 1.

    CRRC Zhuzhou Electric Co., Ltd., Zhuzhou 412001, China

  • 2.

    Key Laboratory of Iron and Steel Metallurgy and Resource Utilization, Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China

  • 3.

    National-Provincial Joint Engineering Research Center of High Temperature Materials and Lining Technology, Wuhan University of Science and Technology, Wuhan 430081, China

  • 4.

    North China Pharmaceutical Huasheng Co., Ltd., Shijiazhuang 052160, China

  • Received Date: 08 Dec 2020
  • Rev Recd Date: 11 May 2021
    • Available Online: 16 Jul 2022
  • Publish Date: 14 May 2021
    Abstract

  • The thermal dissipation of traction transformers is involved in the conjugate heat transfer between the cooling oil and windings along with the secondary heat release of the heated oil delivered to an oil cooler. To simulate the temporal and spatial temperature variations of traction transformers accurately, the distributed parameter models of traction transformer (including windings and oil) and oil cooler are set up based on the one-dimensional assumption, respectively. The two models are integrated with the lumped parameter ones of oil pump and pipelines. A mathematical model of dynamic temperature field is obtained for the traction transformers. Besides, an iteration algorithm is proposed for the numerical solution. For model validation, a temperature rise experiment is performed on a traction transformer and its cooling system. The results show that the transition time for a stable transformer oil temperature obtained by current model (58 min) meets well with experimental measurement (61 min). The predicted average temperatures of oil and windings under the stable running condition take the discrepancies of 1.3 ℃ and 2.5 ℃ against experimental counterparts, respectively. The current work can be used for the optimal design of traction transformers.

     

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