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
1.School of Civil and Architecture Engineering, Northeast Dianli University, Jilin, Jilin 132012, China;2. State Key Lab of Coastal and Offshore Engineering, Dalian University of Technology, Liaoning, Dalian 116023, China
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.
刘春城;初佂宇;孙显鹤;张 伟. 大跨越高压输电线路覆冰断线的冲击动力学模型[J]. , 2012, 31(3): 43-48.
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. , 2012, 31(3): 43-48.
2012, Vol. 31 
