Wind and Structures

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Effect of motion path of downburst on wind-induced conductor swing in transmission line

  • Lou, Wenjuan (Institute of Structure Engineering, Zhejiang University) ;
  • Wang, Jiawei (Institute of Structure Engineering, Zhejiang University) ;
  • Chen, Yong (Institute of Structure Engineering, Zhejiang University) ;
  • Lv, Zhongbin (Henan Electric Power Research Institute) ;
  • Lu, Ming (Henan Electric Power Research Institute)
  • Received : 2014.08.18
  • Accepted : 2016.06.23
  • Published : 2016.09.25
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Abstract

In recent years, the frequency and duration of supply interruption in electric power transmission system due to flashover increase yearly in China. Flashover is usually associated with inadequate electric clearance and often takes place in extreme weathers, such as downbursts, typhoons and hurricanes. The present study focuses on the wind-induced oscillation of conductor during the process when a downburst is passing by or across a specified transmission line. Based on a revised analytical model recently developed for stationary downburst, transient three-dimensional wind fields of moving downbursts are successfully simulated. In the simulations, the downbursts travel along various motion paths according to the certain initial locations and directions of motion assumed in advance. Then, an eight-span section, extracted from a practical 500 kV ultra-high-voltage transmission line, is chosen. After performing a non-linear transient analysis, the transient displacements of the conductors could be obtained. Also, an extensive study on suspension insulator strings' rotation angles is conducted, and the electric clearances at different strings could be compared directly. The results show that both the variation trends of the transient responses and the corresponding peak values vary seriously with the motion paths of downburst. Accordingly, the location of the specified string, which is in the most disadvantageous situation along the studied line section, is picked out. And a representative motion path is concluded for reference in the calculation of each string's oscillation for the precaution of wind-induced flashover under downburst.

Keywords

Acknowledgement

Supported by : National Science Foundation of China

References

  1. Aboshosha, H. and EI Damatty A. (2013), "Downburst induced forces on the conductors of electric transmission lines and the corresponding vulnerablility of towers failure", Proceedings of the CSCE 2013 General Conference, Montreal, Quebec, May 29-June 1.
  2. Achenbach, E. and Heinecke, E. (1981), "On vortex shedding from smooth and rough cylinders in the range of Reynolds numbers 6${\times}$103 to 5${\times}$106", J. Fluid Mech., 109, 239-251. https://doi.org/10.1017/S002211208100102X
  3. Chay, M.T. and Letchford, C.W. (2002), "Pressure distributions on a cube in a simulated thunderstorm downburst-Part A:stationary downburst observations", J. Wind Eng. Ind. Aerod., 90, 711-732. https://doi.org/10.1016/S0167-6105(02)00158-7
  4. Chen, L. and Letchford, C.W. (2004), "A deterministic-stochastic hybrid model of downbursts and its impact on a cantilevered structure", Eng. Struct., 26, 619-629. https://doi.org/10.1016/j.engstruct.2003.12.009
  5. Chen, L. and Letchford, C.W. (2005), "Simulation of extreme winds from thunderstorm downbursts", Proceedings of the Tenth Americas Conference on Wind Engineering, Baton Rouge, Louisiana, USA, May 31-June 4.
  6. Dempsey, D. and White, H. (1996), "Winds wreak havoc on lines", Transmission and Distribution World, 48(6), 32-37.
  7. EI Damatty, A. and Aboshosha, H. (2012), "Capacity of Electrical Transmission towers under downburst loading", Proceedings of the 1st Australasia and South-East Asia Structural Engineering and Construction Conference, Perth, Australia, Nov 28-Dec 2.
  8. Fujita, T.T. (1985), "Manual of downburst identification for project NIMROD", SMRP Research Paper 156, University of Chicago, 104.
  9. Hawes, H. and Dempsey, D. (1993), "Review of recent Australian transmission line failures due to high intensity winds", Paper presented at Work-shop on High Intensity Winds on Transmission Lines, Buenos Aires, Argentina, 19-23.
  10. Hu, Y. (2004), "Study on trip caused by windage yaw of 500kV transmission line", High Voltage Engine., 30(8), 9-10.
  11. Jia, B.Y., Geng, J.H., Fang, C.H. et al. (2012), "Influence of wind speed and direction on flashover characteristic of composite insulators", High Voltage Engine., 38(1), 75-81.
  12. Kanak, J., Benko, M., Simon, A. et al. (2007), "Case study of the 9 May 2003 windstorm in southwestern Slovakia", Atmos. Res., 83, 162-175. https://doi.org/10.1016/j.atmosres.2005.09.012
  13. Li, C., Li, Q.S., Xiao, Q. et al. (2012), "A revised empirical model and CFD simulations for 3D axisymmetric steady-state flows of downbursts and impinging jets", J. Wind Eng. Ind. Aerod., 102, 48-60. https://doi.org/10.1016/j.jweia.2011.12.004
  14. Li, C.Q. (2000), "A stochastic model of severe thunderstorms for transmission line design", Probabilist. Eng. Mech., 15, 359-364. https://doi.org/10.1016/S0266-8920(99)00037-5
  15. Lin, W.E., Savory, E., McIntyre, R.P. et al. (2012), "The response of an overhead electrical power transmission line to two types of wind forcing", J. Wind Eng. Ind. Aerod., 100, 58-69. https://doi.org/10.1016/j.jweia.2011.10.005
  16. Liu, X.H., Yan, B., Lin, X.S. et al. (2009), "Numerical simulation of windage yaw of 500kV UHV Transmission lines", Eng. Mech., 26(1), 244- 249.
  17. Long, L.H., Hu, Y., Li, J.L. et al. (2006), "Study on windage yaw discharge of transmission line", High Voltage Engine., 32(4), 19-21.
  18. Lu, M. (2014), Typical failure analysis of transmission line, China Electric power press, Beijing, China.
  19. Mara, T.G. and Hong, H.P. (2013), "Effect of wind direction on the response and capacity surface of a transmission tower", Eng. Struct., 57, 493-501. https://doi.org/10.1016/j.engstruct.2013.10.004
  20. McCarthy, P. and Melsness, M. (1996), "Severe weather elements associated with September 5,1996 hydro tower failures near Grosse Isle, Manitoba, Canada", Manitoba Environmental Service Centre, Environment Canada, 21pp.
  21. Oliver, S.E., Moriarty, W.W. and Holmes, J.D. (2000), "A risk model for design of transmission line systems against thunderstorm downburst winds", Eng. Struct., 22, 1173-1179. https://doi.org/10.1016/S0141-0296(99)00057-7
  22. Pan, F., Sun, B.N., Lou, W.J. et al. (2008). "Random wind-induced dynamic response of long-span roof to thunderstorm downbursts in the time domain", Acta. Aerodyn. Sin., 26(1), 119-125.
  23. Raghavan, K. and Bernitsas, M.M. (2011), "Experimental investigation of Reynolds number effect on vortex induced vibration of rigid circular cylinder on elastic supports", Ocean Eng., 38(5-6), 719-731. https://doi.org/10.1016/j.oceaneng.2010.09.003
  24. Savory, E., Parke, G.A.R., Zeinoddini, M. et al. (2001), "Modelling of tornado and microburst-induced wind loading and failure of a lattice transmission tower", Eng. Struct., 23(4), 365-375. https://doi.org/10.1016/S0141-0296(00)00045-6
  25. Shahata, A.Y., EI Damatty, A. and Savory, E. (2005), "Finite element modeling of transmission line under downburst wind loading", Finite Elem. Anal. Des., 42(1),71-89. https://doi.org/10.1016/j.finel.2005.05.005
  26. Shehata, A.Y. and EI Damatty, A. (2007), "Behaviour of guyed transmission line structures under downburst wind loading", Wind Struct., 10(3),249-268. https://doi.org/10.12989/was.2007.10.3.249
  27. Shehata, A.Y. and EI Damatty, A. (2008), "Failure analysis of a transmission tower during a microburst", Wind Struct., 11(3),193-208. https://doi.org/10.12989/was.2008.11.3.193
  28. Shehata, A.Y., Nassef, A.O. and EI Damatty, A. (2008), "A coupled finite element-optimization technique to determine critical microburst parameters for transmission towers", Finite Elem. Anal. Des., 45, 1-12. https://doi.org/10.1016/j.finel.2008.07.008
  29. Sun, C.B. (2003), Power Transmission Line, China Electric Power Press, Beijing, China.
  30. Sun, Z.M. (2010), Analysis of Transmission Line Galloping and Research on Anti-galloping Technology. College of Civil Engineering and Architecture, Zhejiang university, Hangzhou, China.
  31. Wang, S.X., Wu, G.N., Fan, J.B. et al. (2008), "Study on flashover of suspension insulator string caused by windage yaw in 500kV transmission lines", Power Syst. Technol., 32(9), 65-69.
  32. Yan, B., Lin, X.S., Luo, W. et al. (2010), "Research on dynamic wind load factors for windage yaw angle of suspension insulator strings", Eng. Mech., 27(1), 221-226.

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