Abstract
Iced conductor motion is induced by the aerodynamic instability. The aerodynamic characteristics of iced bundle conductors in turbulent flow are significantly different from that in uniform flow. The aerodynamic coefficients of iced 8-bundle conductors’ segment models under different turbulence intensities flow are measured by the wind tunnel experiment. Furthermore, the aerodynamic coefficients of each crescent- and sector-shape iced 8-bundle conductors under different turbulence intensities flow and ice thicknesses are obtained. The wind tunnel test results indicate there have obvious difference between aerodynamic characteristics of bundle conductors in turbulent flow and that in uniform flow. Then, key parameters, such as turbulence intensity, ice thickness and ice shape have significant influences on aerodynamic coefficients of each sub-conductors. Differences exist among aerodynamic coefficients of crescent-shape and sector-shape iced 8-bundle conductors. Finally, the galloping coefficients of iced 8-bundle conductors are discussed. The wind tunnel experiment results can offer useful reference resources for the comprehensive analysis of galloping of iced bundle conductors and their prevention techniques.
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References
Barrero, A., Sanz, A., and Alonso, G. (2009). “Hysteresis in transverse galloping: The role of the inflection points.” Journal of Fluids and Structures, Vol. 25, No. 6, pp. 1007–1020, DOI: https://doi.org/10.1016/j.jfluidstructs.2009.04.008.
Cai, M. Q., Yan, B., Lv, X., and Zhou, L. S. (2015). “Numerical simulationof aerodynamic coefficients of iced quad bundle conductors.” IEEE Transactions on Power Delivery, Vol. 30, No. 4, pp. 1669–1676, DOI: https://doi.org/10.1016/S0167-6105(98)00088-9.
Cai, M. Q., Zhou, L. S., Lei, H., and Huang, H. J. (2019). “Wind tunnel test investigation on unsteady aerodynamic coefficients of iced 4-bundle conductors.” Advances in Civil Engineering, Vol. 2019, pp. 1–12, DOI: https://doi.org/10.1155/2019/2586242.
Den Hartog, J. P. (1932). “Transmission line vibration due to sleet.” Transactions of the American Institute of Electrical Engineers, Vol. 51, No. 4, pp. 1074–1076, DOI: https://doi.org/10.1109/T-AIEE.1932.5056223.
Fu, P. and Farzaneh, M. (2007). “Simulation of the ice accretion process on a transmission line cable with differential twisting.” Canadian Journal of Civil Engineering, Vol. 34, No. 2, pp. 147–155, DOI: https://doi.org/10.1139/L06-109.
Hu, J., Yan, B., Zhou, S., and Zhang, H. (2012). “Numerical investigation on galloping of iced quad bundle conductors.” IEEE Transactions on Power Delivery, Vol. 27, No. 2, pp. 784–792, DOI: https://doi.org/10.1109/TPWRD.2012.2185252.
Li, X. M., Nie, X. C., Zhu, Y. K., You, Y., and Yan, Z. T. (2017). “Wind tunnel tests on aerodynamic characteristics of ice-coated 4-Bundle conductors.” Mathematical Problems in Engineering, Vol. 2017, pp. 1273–1283, DOI: https://doi.org/10.1155/2017/1628173.
Lou, W. J., Lv, J., Huang, M.F., Yang, L., and Yan, D. (2014). “Aerodynamicforce characteristics and galloping analysis of iced bundle conductors.” Wind and Structures, Vol. 18, No. 2, pp. 135–154, DOI: https://doi.org/10.12989/was.2014.18.2.135.
Nigol, O., Clarke, G. J., and Havard, D. G. (1977). “Torsional stability of bundle conductors.” IEEE Transactions on Power Apparatus and Systems, Vol. 96 No. 5, pp. 1666–1674, DOI: https://doi.org/10.1109/T-PAS.1977.32496.
Nigol, O. and Buchan, P. G. (1981a). “Conductor galloping part I: Den-hartog mechanism.” IEEE Transactions on Power Apparatus and Systems, Vol. 100, No. 2, pp. 699–707, DOI: https://doi.org/10.1109/TPAS.1981.316921.
Nigol, O. and Buchan, P. G. (1981b). “Conductor galloping part II: torsional mechanism.” IEEE Transactions on Power Apparatus and Systems, Vol. 100, No. 2, pp. 708–720, DOI: https://doi.org/10.1109/TPAS.1981.316922.
Raeesi, A., Cheng, S., and Ting, D. S. K. (2013). “Aerodynamic damping of an inclined circular cylinder in unsteady flow and its application to the prediction of dry inclined cable galloping.” Journal of Wind Engineering and Industrial Aerodynamics, Vol. 113, pp. 12–28, DOI: https://doi.org/10.1016/j.jweia.2012.12.003.
Savadjiev, K. and Farzaneh, M. (2003). “Probabilistic model of combinedwind and ice loads on overhead power line conductors.” Canadian Journal of Civil Engineering, Vol. 30, No. 4, pp. 704–710, DOI: https://doi.org/10.1139/L03-026.
Wang, J. and Lilien, J. L. (1998). “Overhead electrical transmission line galloping: A full multi-span 3-DOF model, some applications and design recommendations.” IEEE Transactions on Power Delivery, Vol. 13, No. 3, pp. 909–916, DOI: https://doi.org/10.1109/61.686992.
Xie, Q., Sun, Q. G., Guan, Z., and Zhou, Y. (2013). “Wind tunnel test on global drag coefficients of multi-bundle conductors.” Journal of Wind Engineering and Industrial Aerodynamics, Vol. 120, pp. 9–18, DOI: https://doi.org/10.1016/j.jweia.2013.06.005.
Yan, B., Liu, X. H., Lv, X., and Zhou, L. S. (2016). “Investigation into galloping characteristics of iced quad bundle conductors.” Journal of Vibration and Control, Vol. 13, pp. 967–986, DOI: https://doi.org/10.1177/1077546314538479.
Zhou, L., Yan, B., Zhang, L., and Zhou, S. (2016). “Study on galloping behavior of iced eight bundle conductor transmission lines.” Journal of Sound and Vibration, Vol. 362, pp. 85–110, DOI: https://doi.org/10.1016/j.jsv.2015.09.046.
Acknowledgements
This work was financially supported by the National Natural Science Foundation of China (51507106, 51308570 and 51778381)China, Science Foundation of Henan Electric Power Research Institute (SGTYHT/15-JS-194) and China State Scholarship Fund (201708515019) during Mengqi Cai in Columbia University as research scholar.
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Cai, M., Xu, Q., Zhou, L. et al. Aerodynamic Characteristics of Iced 8-bundle Conductors under Different Turbulence Intensities. KSCE J Civ Eng 23, 4812–4823 (2019). https://doi.org/10.1007/s12205-019-0359-9
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DOI: https://doi.org/10.1007/s12205-019-0359-9