Significant vertical displacement caused by ice shedding from conductors may increase the risk of electrical
accidents such as flashover. Ice shedding often occurs with joint actions of wind, which affects the jump height of transmission
lines. The shielding effect of bundled conductors leads to uneven ice accretion among sub-conductors, resulting in variations in
the wind attack angle along the transmission line, which significantly influences on the wind load on the conductor. This paper
firstly established a finite element model of a practical iced transmission line for dynamic response analysis of ice shedding. To
accurately determine the wind load on bundled conductors, the aerodynamic force coefficients of the conductors were updated in
real-time by extracting the torsion angle response. Parametric analysis was also conducted in detail to investigate the impact of
uneven ice accretion among sub-conductors, ice thickness, and wind velocity on the iced-shedding jump height of the
transmission line.
Mingfeng Huang — 1)College of Civil Engineering and Architecture, Zhejiang University, 886 Yuhangtang Road, Xihu District, Hangzhou, China 2)College of Civil Engineering and Architecture, Guangxi University, 100 East Daxue Road, Xixiangtang District, Nanning, China
Changzheng Chi — College of Civil Engineering and Architecture, Zhejiang University, 886 Yuhangtang Road, Xihu District, Hangzhou, China
Yi Gu — China Energy Engineering Group Zhejiang Electric Power Design Institute Co., Ltd., 68 Gucui Road, Xihu District, Hangzhou, China
Yuelong Zhang — China Energy Engineering Group Zhejiang Electric Power Design Institute Co., Ltd., 68 Gucui Road, Xihu District, Hangzhou, China
Zidi Zhu — College of Civil Engineering and Architecture, Zhejiang University, 886 Yuhangtang Road, Xihu District, Hangzhou, China
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