Wind and Structures

  • 제34권2호
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  • Pages.173-183
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  • 2022
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Galloping characteristics of a 1000-kV UHV iced transmission line in the full range of wind attack angles

  • Lou, Wenjuan (Institute of Structural Engineering, Zhejiang University) ;
  • Wu, Huihui (Institute of Structural Engineering, Zhejiang University) ;
  • Wen, Zuopeng (Institute of Structural Engineering, Zhejiang University) ;
  • Liang, Hongchao (Institute of Structural Engineering, Zhejiang University)
  • 투고 : 2021.02.04
  • 심사 : 2021.12.08
  • 발행 : 2022.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

The galloping of iced conductors has long been a severe threat to the safety of overhead transmission lines. Compared with normal transmission lines, the ultra-high-voltage (UHV) transmission lines are more prone to galloping, and the damage caused is more severe. To control the galloping of UHV lines, it is necessary to conduct a comprehensive analysis of galloping characteristics. In this paper, a large-span 1000-kV UHV transmission line in China is taken as a practical example where an 8-bundled conductor with D-shaped icing is adopted. Galerkin method is employed for the time history calculation. For the wind attack angle range of 0°~180°, the galloping amplitudes in vertical, horizontal, and torsional directions are calculated. Furthermore, the vibration frequencies and galloping shapes are analyzed for the most severe conditions. The results show that the wind at 0°~10° attack angles can induce large torsional displacement, and this range of attack angles is also most likely to occur in reality. The galloping with largest amplitudes in all three directions occurs at the attack angle of 170° where the incoming flow is at the non-iced side, due to the strong aerodynamic instability. In addition, with wind speed increasing, galloping modes with higher frequencies appear and make the galloping shape more complex, indicating strong nonlinear behavior. Based on the galloping amplitudes of three directions, the full range of wind attack angles are divided into five galloping regions of different severity levels. The results obtained can promote the understanding of galloping and provide a reference for the anti-galloping design of UHV transmission lines.

키워드

참고문헌

  1. Den Hartog, J.P. (1932), "Transmission line vibration due to sleet", AIEE Transactions., 51(4), 1074-1076. https://doi.org/10.1109/T-AIEE.1932.5056223.
  2. Desai, Y.M., Yu, P., Popplewell, N. and Shah, A.H. (1995), "Finite element modelling of transmission line galloping", Comput. Struct., 57(3), 407-420. https://doi.org/10.1016/0045-7949(94)00630-L.
  3. Liu, Y.K., Li, L.R., Li, S.L., Yang, X.H. and Fu, Z.C. (2016). "Analysis and experiment on galloping amplitude of transmission lines", J. Shanghai Jiaotong Univ., 50(06), 825-830. http://dx.doi.org/10.16183/j.cnki.jsjtu.2016.06.002.
  4. Lou, W.J., Lv, J., Huang, M.F., Yang, L. and Yan, D. (2014a), "Aerodynamic force characteristics and galloping analysis of iced bundled conductors", Wind Struct., 18(2), 135-154. https://doi.org/10.12989/was.2014.18.2.135.
  5. Lou, W.J., Yang, L., Huang, M.F. and Yang, X. (2014b), "Two-parameter bifurcation and stability analysis for nonlinear galloping of iced transmission lines", J. Eng. Mech., 140(11), 04014081. https://doi.org/10.1061/(ASCE)EM.1943-7889.0000795.
  6. Lou, W.J., Huang, C.R., Huang, M.F. and Yu, J. (2019), "An aerodynamic anti-galloping technique of iced 8-bundled conductors in ultra-high-voltage transmission lines", J. Wind Eng. Ind. Aerod., 193, 103972. https://doi.org/10.1016/j.jweia.2019.103972.
  7. Luongo, A., Zulli, D. and Piccardo, G. (2008), "Analytical and numerical approaches to nonlinear galloping of internally resonant suspended cables", J. Sound Vib., 315(3), 375-393. https://doi.org/10.1016/j.jsv.2008.03.067.
  8. Nigol, O. and Buchan, P.G. (1981), "Conductor galloping-part II torsional mechanism", IEEE T. Power Appar. Syst., PAS-100(2), 708-720. https://doi.org/10.1109/TPAS.1981.316922.
  9. Ohkuma, T. and Marukawa, H. (2000), "Galloping of overhead transmission lines in gusty wind", Wind Struct., 3(4), 243-253. https://doi.org/10.12989/was.2000.3.4.243.
  10. Piccardo, G., Pagnini, L.C. and Tubino, F. (2015), "Some research perspectives in galloping phenomena: critical conditions and post-critical behavior", Continuum Mech. Thermodyn., 27(1), 261-285. https://doi.org/10.1007/s00161-014-0374-5.
  11. Si, J., Rui, X., Bin, L., Zhou, L. and Liu, S. (2020), "Development of a Wind Spoiler Anti-Galloping Device for Bundle Conductors of UHV Overhead Transmission Lines", IEEE Trans. Power Deliv., 35(3), 1348-1356. https://doi.org/10.1109/TPWRD.2019.2943383.
  12. Van Dyke, P. and Laneville, A. (2008), "Galloping of a single conductor covered with a D-section on a high-voltage overhead test line", J. Wind Eng. Ind. Aerod., 96(6-7), 1141-1151. https://doi.org/10.1016/j.jweia.2007.06.036.
  13. Wang, J.W. and Lilien, J.L. (1998), "Overhead electrical transmission line galloping - A full multi-span 3-DOF model, some applications and design recommendations", IEEE Trans. Power Deliv., 13(3), 909-916. https://doi.org/10.1109/61.686992.
  14. Yan, B., Liu, X.H., Lv, X. and Zhou, L.S. (2016), "Investigation into galloping characteristics of iced quad bundle conductors", J. Vib. Control, 22(4), 965-987. https://doi.org/10.1177/1077546314538479.
  15. Yan, Z., Li, Z., Savory, E. and Lin, W.E. (2013), "Galloping of a single iced conductor based on curved-beam theory", J. Wind Eng. Ind. Aerod., 123, 77-87. https://doi.org/10.1016/j.jweia.2013.10.002.
  16. Yan, Z.M., Yan, Z.T., Li, Z.L. and Tan, T. (2012), "Nonlinear galloping of internally resonant iced transmission lines considering eccentricity", J. Sound Vib., 331(15), 3599-3616. https://doi.org/10.1016/j.jsv.2012.03.011.
  17. Yu, P., Desai, Y. M., Shah, A. H. and Popplewell, N. (1993a), "Three-degree-of-freedom model for galloping. Part I: Formulation", J. Eng. Mech., 119(12), 2404-2425. https://doi.org/10.1061/(ASCE)0733-9399(1993)119:12(2404).
  18. Yu, P., Desai, Y. M., Popplewell, N. and Shah, A. H. (1993b), "Three-degree-of-freedom model for galloping. Part II: Solutions", J. Eng. Mech., 119(12), 2426-2448. https://doi.org/10.1061/(ASCE)0733-9399(1993)119:12(2426).
  19. Zhou, L.S., Yan, B., Zhang, L. and Zhou, S. (2016), "Study on galloping behavior of iced eight bundle conductor transmission lines", J. Sound Vib., 362, 85-110, https://doi.org/10.1016/j.jsv.2015.09.046.