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Analysis of the Measurements of the Radiated Emission from 9 kHz to 150 kHz from Electric Railways

Author

Listed:
  • Babak Sadeghi

    (Electric Power Engineering, Division of Energy Science, Luleå University of Technology, 93187 Skellefteå, Sweden)

  • Per Westerlund

    (Electric Power Engineering, Division of Energy Science, Luleå University of Technology, 93187 Skellefteå, Sweden)

  • Manav Giri

    (Electric Power Engineering, Division of Energy Science, Luleå University of Technology, 93187 Skellefteå, Sweden)

  • Math Bollen

    (Electric Power Engineering, Division of Energy Science, Luleå University of Technology, 93187 Skellefteå, Sweden)

Abstract

The frequency domain measurement of radiated emissions from electric railways (from 9 kHz up to 150 kHz) has been omitted from the main part of the relevant standard (lack of repeatability and reproducibility of the results is mentioned as the reason). This paper describes the radiated emissions measured from three electric trains to emphasize the importance of the suitable time length selection (by comparing specific durations of the recorded data: 1 min and 5 min) and the influence of calculation methods of the resultant spectrum in frequency domain (RMS, mean, and Max of spectrum). The results revealed the requirement of unique definitions for pre-, during-, and post-measurement factors so that the repeatable and reproducible results could be achieved. The prerequisites for having less uncertain results are as follows: (1) pure background measurement (in energized and de-energized state of the catenary); (2) precoordinated operation mode, speed, and power of the train during the measurement; (3) precise details of the analysis step. A unique analysis method is required (to be clearly elaborated in the relevant standards) to obtain comparable results between different working groups engaged with the radiated-emission measurements from a train in a frequency range of 9 kHz to 150 kHz.

Suggested Citation

  • Babak Sadeghi & Per Westerlund & Manav Giri & Math Bollen, 2024. "Analysis of the Measurements of the Radiated Emission from 9 kHz to 150 kHz from Electric Railways," Energies, MDPI, vol. 17(19), pages 1-18, October.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:19:p:4951-:d:1491580
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    References listed on IDEAS

    as
    1. Andrea Mariscotti, 2023. "The Electrical Behaviour of Railway Pantograph Arcs," Energies, MDPI, vol. 16(3), pages 1-43, February.
    2. Andrea Mariscotti, 2021. "Critical Review of EMC Standards for the Measurement of Radiated Electromagnetic Emissions from Transit Line and Rolling Stock," Energies, MDPI, vol. 14(3), pages 1-26, February.
    3. Krzysztof Jakubowski & Jacek Paś & Adam Rosiński, 2021. "The Issue of Operating Security Systems in Terms of the Impact of Electromagnetic Interference Generated Unintentionally," Energies, MDPI, vol. 14(24), pages 1-17, December.
    4. Leopoldo Angrisani & Mauro D’Arco & Egidio De Benedetto & Luigi Duraccio & Fabrizio Lo Regio, 2023. "Broadband Power Line Communication in Railway Traction Lines: A Survey," Energies, MDPI, vol. 16(17), pages 1-22, September.
    5. Qiujiang Liu & Wanqi Zhang & Guotao Cao & Jingwei Liu & Jingjing Ye & Mingli Wu & Shaobing Yang, 2022. "Influence of the Catenary Distributed Parameters on the Resonance Frequencies of Electric Railways Based on Quantitative Calculation and Field Tests," Energies, MDPI, vol. 15(10), pages 1-17, May.
    6. Andrea Mariscotti & Leonardo Sandrolini, 2021. "Detection of Harmonic Overvoltage and Resonance in AC Railways Using Measured Pantograph Electrical Quantities," Energies, MDPI, vol. 14(18), pages 1-22, September.
    7. Mengzhe Jin & Man Hu & Hao Li & Yixuan Yang & Weidong Liu & Qingyuan Fang & Shanghe Liu, 2022. "Experimental Study on the Transient Disturbance Characteristics and Influence Factors of Pantograph–Catenary Discharge," Energies, MDPI, vol. 15(16), pages 1-20, August.
    8. Rafael S. Salles & Sarah K. Rönnberg, 2023. "Review of Waveform Distortion Interactions Assessment in Railway Power Systems," Energies, MDPI, vol. 16(14), pages 1-33, July.
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