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Effect of Overhead Contact Line Pre-Sag on the Interaction Performance with a Pantograph in Electrified Railways

Author

Listed:
  • Guiming Mei

    (State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China)

  • Yang Song

    (Department of Structural Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway)

Abstract

In the high-speed rail industry, the overhead contact line erected along the railroad is used to supply the electricity to the high-speed train via a pantograph on the carbody’s roof. This work attempts to explore the effect of contact line pre-sag on the contact quality between the pantograph and the contact line. A nonlinear finite element approach is implemented to build the overhead contact line system with accurate description of the pre-sag of the contact line. Through a nonlinear solution, the effect of contact line pre-sag on the contact force is analysed with different train speeds and tension classes. The analysis result indicates the feasibility of tuning the pre-sag to improve the interaction performance at a given speed and tension class. In the low-speed range, the change of pre-sag does not have a significant effect on the interaction performance. However, when the speed increases up to a certain value, the effect of pre-sag on the contact force is nonnegligible. The increase in tension can reduce the sensitivity of the interaction performance to the pre-sag. An optimisation procedure is implemented to obtain the optimal amount of pre-sag for different train speeds and tension classes. The results indicate a necessity to include a certain amount of contact line pre-sag to maintain an excellent interaction performance at high speed.

Suggested Citation

  • Guiming Mei & Yang Song, 2022. "Effect of Overhead Contact Line Pre-Sag on the Interaction Performance with a Pantograph in Electrified Railways," Energies, MDPI, vol. 15(19), pages 1-13, September.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:19:p:6875-:d:919801
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    References listed on IDEAS

    as
    1. 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.
    2. Jin Wang & Zhongping Yang & Fei Lin & Junci Cao, 2013. "Harmonic Loss Analysis of the Traction Transformer of High-Speed Trains Considering Pantograph-OCS Electrical Contact Properties," Energies, MDPI, vol. 6(11), pages 1-21, November.
    3. Yinping Li & Tianxu Jin & Li Liu & Kun Yuan, 2020. "Dynamic Performance Simulation and Stable Current Collection Analysis of a Pantograph Catenary System for Trolley Wire Overhead Electrically Actuated LHD," Energies, MDPI, vol. 13(5), pages 1-17, February.
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    Cited by:

    1. Andrea Mariscotti, 2023. "The Electrical Behaviour of Railway Pantograph Arcs," Energies, MDPI, vol. 16(3), pages 1-43, February.
    2. Théo Kziazyk & Eric Gavignet & Pierre-Henri Cornuault & Philippe Baucour & Didier Chamagne, 2023. "Review on Test Benches Studying Sliding Electrical Contact and Synthesis of Experimental Results," Energies, MDPI, vol. 16(3), pages 1-21, January.

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