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A New Multi-Conductor Transmission Line Model of Transformer Winding for Frequency Response Analysis Considering the Frequency-Dependent Property of the Lamination Core

Author

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  • Song Wang

    (State Key Laboratory of Electrical Insulation and Power Equipment, Faculty of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
    Shaanxi Key Laboratory of Smart Grid, Xi’an 710049, China)

  • Ze Guo

    (State Key Laboratory of Electrical Insulation and Power Equipment, Faculty of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
    Shaanxi Key Laboratory of Smart Grid, Xi’an 710049, China)

  • Ting Zhu

    (State Key Laboratory of Electrical Insulation and Power Equipment, Faculty of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
    Shaanxi Key Laboratory of Smart Grid, Xi’an 710049, China)

  • Hanke Feng

    (State Key Laboratory of Electrical Insulation and Power Equipment, Faculty of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
    Shaanxi Key Laboratory of Smart Grid, Xi’an 710049, China)

  • Shuhong Wang

    (State Key Laboratory of Electrical Insulation and Power Equipment, Faculty of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
    Shaanxi Key Laboratory of Smart Grid, Xi’an 710049, China)

Abstract

Multi-conductor transmission line (MTL) model of power transformer winding for frequency response analysis (FRA) has been successfully applied for the purpose of studying the characteristics of winding deformations. Most of the time it is considered that, at a frequency above 10 kHz, the flux does not penetrate the core, and the iron core losses due to hysteresis and eddy current can be neglected accordingly. However, in fact, there is still a little flux residing in the core, and it has a significant influence on inductances and resistances of transformer winding even up to approximately 1 MHz. In this paper, by introducing the anisotropic complex permeability of the lamination core into calculating inductances and resistances of the MTL model, a new MTL model considering the frequency-dependent property of the lamination core for FRA is presented. In addition, the accuracy and effectiveness of the MTL model are validated by means of a comparison between measured and emulated FRA results in a wide frequency range from 10 Hz up to 10 MHz. This precise MTL model of the transformer winding provides us a more objective and positive condition for simulation research of winding deformation detection.

Suggested Citation

  • Song Wang & Ze Guo & Ting Zhu & Hanke Feng & Shuhong Wang, 2018. "A New Multi-Conductor Transmission Line Model of Transformer Winding for Frequency Response Analysis Considering the Frequency-Dependent Property of the Lamination Core," Energies, MDPI, vol. 11(4), pages 1-12, April.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:4:p:826-:d:139361
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    References listed on IDEAS

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    1. Saleh Alsuhaibani & Yasin Khan & Abderrahmane Beroual & Nazar Hussain Malik, 2016. "A Review of Frequency Response Analysis Methods for Power Transformer Diagnostics," Energies, MDPI, vol. 9(11), pages 1-17, October.
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    Cited by:

    1. Przemyslaw Goscinski & Zbigniew Nadolny & Andrzej Tomczewski & Ryszard Nawrowski & Tomasz Boczar, 2023. "The Influence of Heat Transfer Coefficient α of Insulating Liquids on Power Transformer Cooling Systems," Energies, MDPI, vol. 16(6), pages 1-15, March.
    2. Xinghua Shi & Ran Wei & Wenbin Zhang, 2023. "Research on Online Detection Method of Transformer Winding Deformation Based on VFTO Characteristics," Energies, MDPI, vol. 16(8), pages 1-23, April.

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