Shanpeng Zhao This email address is being protected from spambots. You need JavaScript enabled to view it.1, Haixi Zhang1, Chenrui Zhang2, and Youpeng Zhang1

1School of Automatic & Electrical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China
2State Grid Xinjiang Electric Power Co Ltd, Urumqi Electric Power Supply Company


Received: July 15, 2021
Accepted: October 8, 2021
Publication Date: December 17, 2021

 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.

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To prevent the catenary positive feeder of Lanzhou–Urumqi High-speed Railway from violent galloping under strong wind, The aerodynamic characteristics of different phases of composite cross-sections formed after an air flow spoiler was installed on the catenary positive feeder are calculated by finite element method, and the effectiveness of the air flow spoiler in restraining the galloping of catenary positive feeder in the strong wind areas of the Lanzhou–Urumqi High-speed Railway was studied. The anti-galloping effect of three typical diameter air flow spoilers are compared. Results showed that the number and size of vortices generated in the wake area of different composite body sections varied after the air flow spoiler was installed. The aerodynamic coefficients after air flow spoiler installation were lower than those before installation. All the spoilers exhibited a good anti-galloping effect, with the best effect exhibited by 0.75 D spoiler. Again, the research results can provide theoretical support for further refinement of the mechanism of the air flow spoiler to suppress the galloping of non-icing conductors.

Keywords: Lanzhou–Urumqi High-speed Railway, catenary positive feeder, air flow spoiler, aerodynamic characteristics, anti-galloping effect


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