Abstract
This paper presents a new dynamic model for the simulation of power-transmission-line galloping. The energy approach using the assumed mode method was used to derive equations of motion for a single transmission line and double transmission lines connected by spring spacers. Equations of motion are expressed in matrix form, which simplifies numerical analysis and saves computational time. The dynamic models were verified experimentally by comparing theoretical natural frequencies with measured natural frequencies of real transmission lines installed in the test site. Accelerometers and a CCD camera were used to measure vibrations, and an image processing technique was used to trace a circular target mounted on the line. Experimental results are in good agreement with theoretical results, which validate the dynamic models derived in this study. Galloping forces were modeled by assuming quasi-steady aerodynamic lift and drag, which enabled us to predict the galloping phenomena. Numerical simulation results are presented.
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This work was supported by the research program of Dongguk University, 2019.
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Ezdiani Talib received B.S. degree in Department of Engineering from University Putra Malaysia and M.S. degree in Department of Environmental Engineering from National University of Malaysia. She is currently a Ph.D. degree candidate at the Department of Mechanical Engineering of Dongguk University in Seoul, Korea. Her research interests are in the area of active vibration control of smart structure.
Ji-Hwan Shin received B.S. and M.S. degrees in Department of Mechanical Engineering from Dongguk University in 2014 and 2016. He is currently a Ph.D. degree candidate at the Department of Mechanical Engineering of Dongguk University in Seoul, Korea. His research interests are in the area of active vibration control of smart structure.
Jae-Ryang Koo received B.S. degree in Dept. of Mechanical Engineering from Sungkyunkwan University in 1994 and M.S. degree in Dept. of Mechanical Engineering from Chungnam University in 2004. He is currently a Senior Researcher at the Korea Electric Power Research Institute in Daejeon, Korea. His research area is acoustic vibration of structure.
Moon K. Kwak received B.S. and M.S. degrees in Naval Architecture from Seoul National University in 1981 and 1983. He then received his Ph.D. degree from the Dept. of Engineering Science and Mechanics of Virginia Tech in 1989. He is currently a Professor at the Department of Mechanical, Robotics and Energy Engineering of Dongguk University in Seoul, Korea. His research interests are dynamics and control of flexible multibody system, and active vibration control of smart structure.
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Talib, E., Shin, JH., Kwak, M.K. et al. Dynamic modeling and simulation for transmission line galloping. J Mech Sci Technol 33, 4173–4181 (2019). https://doi.org/10.1007/s12206-019-0812-1
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DOI: https://doi.org/10.1007/s12206-019-0812-1