Wind and Structures

Techno-Press (테크노프레스)
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Capacity assessment of existing corroded overhead power line structures subjected to synoptic winds

  • Niu, Huawei (Wind Engineering Research Center, Hunan University) ;
  • Li, Xuan (Department of Civil and Environmental Engineering, University of Connecticut) ;
  • Zhang, Wei (Department of Civil and Environmental Engineering, University of Connecticut)
  • Received : 2017.10.12
  • Accepted : 2018.05.02
  • Published : 2018.11.25
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Abstract

The physical infrastructure of the power systems, including the high-voltage transmission towers and lines as well as the poles and wires for power distribution at a lower voltage level, is critical for the resilience of the community since the failures or nonfunctioning of these structures could introduce large area power outages under the extreme weather events. In the current engineering practices, single circuit lattice steel towers linked by transmission lines are widely used to form power transmission systems. After years of service and continues interactions with natural and built environment, progressive damages accumulate at various structural details and could gradually change the structural performance. This study is to evaluate the typical existing transmission tower-line system subjected to synoptic winds (atmospheric boundary layer winds). Effects from the possible corrosion penetration on the structural members of the transmission towers and the aerodynamic damping force on the conductors are evaluated. However, corrosion in connections is not included. Meanwhile, corrosion on the structural members is assumed to be evenly distributed. Wind loads are calculated based on the codes used for synoptic winds and the wind tunnel experiments were carried out to obtain the drag coefficients for different panels of the transmission towers as well as for the transmission lines. Sensitivity analysis is carried out based upon the incremental dynamic analysis (IDA) to evaluate the structural capacity of the transmission tower-line system for different corrosion and loading conditions. Meanwhile, extreme value analysis is also performed to further estimate the short-term extreme response of the transmission tower-line system.

Keywords

Acknowledgement

Supported by : National Science Foundation of China, China Scholarship Council

References

  1. Aboshosha, H. and El Damatty, A. (2015), "Engineering method for estimating the reactions of transmission line conductors under downburst winds", Eng. Struct., 99, 272-284. https://doi.org/10.1016/j.engstruct.2015.04.010
  2. Aboshosha, H., Elawady, A., El Ansary, A. and El Damatty, A. (2016), "Review on dynamic and quasi-static buffeting response of transmission lines under synoptic and non-synoptic winds", Eng. Struct., 112, 23-46. https://doi.org/10.1016/j.engstruct.2016.01.003
  3. Albrecht, P. and Naeemi, A.H. (1984), "Performance of weathering steel in bridges", NCHRP Report 272, Washington.
  4. Banik, S., Hong, H. and Kopp, G.A. (2008), "Assessment of structural capacity of an overhead power transmission line tower under wind loading", BBAA VI International Colloquium on Bluff Bodies Aerodynamics & Applications, 20-24.
  5. Banik, S.S., Hong, H.P. and Kopp, G.A. (2010), "Assessment of capacity curves for transmission line towers under wind loading", Wind Struct., 13(1), 1-20. https://doi.org/10.12989/was.2010.13.1.001
  6. Chen, X. (2013), "Estimation of stochastic crosswind response of wind-excited tall buildings with nonlinear aerodynamic damping", Eng. Struct., 56, 766-778. https://doi.org/10.1016/j.engstruct.2013.05.044
  7. Czarnecki, A.A. and Nowak, A.S. (2008). "Time-variant reliability profiles for steel girder bridges", Struct. Saf., 30(1), 49-64. https://doi.org/10.1016/j.strusafe.2006.05.002
  8. Darwish, M. and El Damatty, A. (2017), "Critical parameters and configurations affecting the analysis and design of guyed transmission towers under downburst loading", Practice Periodical Struct. Des. Constr., 22(1), 4016017. https://doi.org/10.1061/(ASCE)SC.1943-5576.0000301
  9. Deng, H.Z., Xu, H.J., Duan, C.Y., Jin, X.H. and Wang, Z.H. (2016), "Experimental and numerical study on the responses of a transmission tower to skew incident winds", J. Wind Eng. Ind. Aerod., 157, 171-188. https://doi.org/10.1016/j.jweia.2016.05.010
  10. Deodatis, G. (1996), "Simulation of ergodic multivariate stochastic processes", J. Eng. Mech., 122(8), 778-787. https://doi.org/10.1061/(ASCE)0733-9399(1996)122:8(778)
  11. Dua, A., Clobes, M., Hobbel, T. and Matsagar, V. (2015), "Dynamic analysis of overhead transmission lines under turbulent wind loading", 15(December), 359-371. https://doi.org/10.4236/ojce.2015.54036
  12. Elawady, A., Aboshosha, H., El Damatty, A., Bitsuamlak, G., Hangan, H. and Elatar, A. (2017), "Aero-elastic testing of multispanned transmission line subjected to downbursts", J. Wind Eng. Ind. Aerod., 169, 194-216. https://doi.org/10.1016/j.jweia.2017.07.010
  13. Elawady, A. and El Damatty, A. (2016), "Longitudinal force on transmission towers due to non-symmetric downburst conductor loads", Eng. Struct., 127, 206-226. https://doi.org/10.1016/j.engstruct.2016.08.030
  14. Hamada, A., King, J.P.C., El Damatty, A.A., Bitsuamlak, G. and Hamada, M. (2017), "The response of a guyed transmission line system to boundary layer wind", Eng. Struct., 139, 135-152. https://doi.org/10.1016/j.engstruct.2017.01.047
  15. Jacobs, M. (2013), "13 of the Largest Power Outages in History - and What They Tell Us About the 2003 Northeast Blackout", Union of Concerned Scientists, Science for a healthy planet and safer world, (August 8).
  16. Kaimal, J.C., Wyngaard, J.C., Izumi, Y. and Cote, O.R. (1972), "Spectral characteristics of surface-layer turbulence", Q. J. Roy. Meteor. Soc., 98(417), 563-589. https://doi.org/10.1002/qj.49709841707
  17. Keyhan, H., McClure, G. and Habashi, W.G. (2013), "Dynamic analysis of an overhead transmission line subject to gusty wind loading predicted by wind-conductor interaction", Comput. Struct., 122, 135-144. https://doi.org/10.1016/j.compstruc.2012.12.022
  18. Komp, M.E. (1987), "Atmospheric corrosion rating of weathering steel", Calculations and significance.
  19. Kotz, S. and Nadarajah, S. (2000), Extreme value distributions. Imperial College Press, London.
  20. Lee, K.M., Cho, H.N. and Cha, C.J. (2006), Life-cycle costeffective optimum design of steel bridges considering environmental stressors, Engineering Structures.
  21. Liang, S., Zou, L., Wang, D. and Cao, H. (2015), "Investigation on wind tunnel tests of a full aeroelastic model of electrical transmission tower-line system", Eng. Struct., 85, 63-72. https://doi.org/10.1016/j.engstruct.2014.11.042
  22. Lin, W.E., Savory, E., McIntyre, R.P., Vandelaar, C.S. and King, J. P.C. (2012), "The response of an overhead electrical power transmission line to two types of wind forcing", J. Wind Eng. Ind. Aerod., 100(1), 58-69. https://doi.org/10.1016/j.jweia.2011.10.005
  23. Mara, T.G. (2013), "Capacity assessment of a transmission tower under wind loading".
  24. 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
  25. Meehl, G. A., Zwiers, F., Evans, J., Knutson, T., Mearns, L. and Whetton, P. (2000), "Trends in extreme weather and climate events: issues related to modeling extremes in projections of future climate change", Bull. Am. Meteorol. Soc., 81(3), 427-436. https://doi.org/10.1175/1520-0477(2000)081<0427:TIEWAC>2.3.CO;2
  26. Moriarty, P.J., Holley, W.E. and Butterfield, S.P. (2004), "Extrapolation of extreme and fatigue loads using probabilistic methods", National Renewable Energy Laboratory, (November), 500-34421.
  27. Nowak, A.S. and Thoft-Christensen, P. (2000), "International Contribution to the Highways Agency's Bridge Related Research", Bridge Rehabilitation in the UK: Review of the Current Programme and Preparing for the Next.
  28. Nowak, A. and Szerszen, M. (2001), "Reliability profiles for steel girder bridges with regard to corrosion and fatigue", J. Theor. Appl. Mech., 39(2), 339-352.
  29. Ochi, M. (1981), "Principles of extreme value statistics and their application", Extreme Loads Response Symposium, 15-30.
  30. De Oliveira, A., Silva, E., De Medeiros, J.C.P., Loredo-Souza, A. M., Rocha, M.M., Rippel, L.I., Carpeggiani, E.A. and Nunez, G. J.Z. (2006), "Wind loads on metallic latticed transmission line towers", Proceedings CIGRE Session 2006.
  31. Park, C.H. and Nowak, A.S. (1997). "Lifetime reliability model for steel girder bridges", P.C. Das (Ed.), Safety of bridges, Thomas Telford Publishing, London.
  32. Stengel, D. and Mehdianpour, M. (2014), "Finite element modelling of electrical overhead line cables under turbulent wind load", J. Struct., 1-8.
  33. Takeuchi, M., Maeda, J. and Ishida, N. (2010), "Aerodynamic damping properties of two transmission towers estimated by combining several identification methods", J. Wind Eng. Ind. Aerod., 98(12), 872-880. https://doi.org/10.1016/j.jweia.2010.09.001
  34. Yang, S.C. and Hong, H.P. (2016), "Nonlinear inelastic responses of transmission tower-line system under downburst wind", Eng. Struct., 123, 490-500. https://doi.org/10.1016/j.engstruct.2016.05.047
  35. Yuan, H., Zhang, W., Zhu, J. and Bagtzoglou, A. (2017), "Structural Rrsiliency assessment of a single-circuit overhead distribution system under extreme wind hazard", Proceedings of the 13th Americas Conference on Wind Engineering, May 21-24, 2017, Gainesville, FL.
  36. Zhang, W., Zhu, J., Liu, H. and Niu, H. (2015), "Probabilistic capacity assessment of lattice transmission towers under strong wind", Frontiers in Built Environ., 1, 1-12.

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