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Journal of Mechanical Science and Technology

, Volume 32, Issue 8, pp 3597–3602 | Cite as

Multibody dynamics study on galloping of power transmission line

  • Jiwook Kim
  • Jeonghyun SohnEmail author
Article
  • 53 Downloads

Abstract

When the power transmission line (PTL) passes through a region of high mountains and heavy snowfall, maintaining the stability of the PTL and avoiding sleet jump and galloping are necessary. In this study, PTL is modeled as the mass-spring-damper system by using the multi-body dynamics analysis program, RecurDyn. The lumped mass model is compared with the finite element model based on deflection. To analyze the dynamic behavior of the PTL under icing and wind conditions, we obtained a damping coefficient for a multibody model from the free vibration test and Rayleigh damping theory. The icing cross-section of the transmission line is assumed to have ellipse and triangle shapes. The aerodynamic coefficients for each cross-section are derived by using the commercial CFD program, ANSYS Fluent. The occurrence of galloping is simulated for each shape according to the attack angle. Results indicate that the dynamic behavior of the PTL and the galloping conditions such as the icing shape, thickness, and attack angle, can be analyzed. Furthermore, the effects of each factor are evaluated. In the elliptical icing section, the effect of icing thickness is high; whereas in the triangular icing section, the wind velocity highly affects galloping.

Keywords

Galloping Power transmission line Rayleigh damping Aerodynamic coefficient Multibody dynamics 

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Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Graduate School of Mechanical Design EngineeringPukyong National UniversityBusanKorea
  2. 2.Department of Mechanical Design EngineeringPukyong National UniversityBusanKorea

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