|
|
|
| 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.
|
|
Received: 23 November 2010
|
|
Corresponding Authors:
LIU Chun-cheng
|
|
|
|
|
|
|
2012, Vol. 31 
