Impact dynamics model of long span high voltage transmission lines subjected to iced wire breakage

LIU Chun-cheng;;CHU Zheng-yu;SUN Xian-he;ZHANG Wei

Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (3) : 43-48.

PDF(2081 KB)
PDF(2081 KB)
Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (3) : 43-48.
论文

Impact dynamics model of long span high voltage transmission lines subjected to iced wire breakage

  • LIU Chun-cheng1, 2, CHU Zheng-yu 1, SUN Xian-he 1, ZHANG Wei1
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Abstract

In order to theoretically reveal the impact dynamic responses of long span high voltage transmission lines subjected to iced wire breakage, the impact dynamics model for long span high-voltage transmission lines with iced bundled conductors is developed comprehensively by using the equivalent single-iced conductor instead of bundled conductors.The impact dynamics model of iced wire breakage is derived by using energy method. Taking a typical tension section of long span high-voltage transmission line as an example, the impact responses under iced wire breakage and non-iced wire breakage are computed by using this model and a good agreements are achieved. The results show that: the impact dynamic response under iced wire breakage is larger than that under non-iced wire breakage, so the impact dynamic response due to iced wire breakage should not be ignored, and the model can provide a theoretical basis for experiments and numerical simulations of long span high voltage transmission lines under iced wire breakage.

Key words

long span / high voltage transmission line / ice accretion / bundled conductor / spacer / wire breakage / impact dynamics

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LIU Chun-cheng;;CHU Zheng-yu;SUN Xian-he;ZHANG Wei. Impact dynamics model of long span high voltage transmission lines subjected to iced wire breakage[J]. Journal of Vibration and Shock, 2012, 31(3): 43-48
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