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| Influences of temperature on the galloping characteristics of iced conductor |
| Received:July 09, 2021 Revised:August 26, 2021 |
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| DOI：10.7511/jslx20210709001 |
| KeyWord:temperature effect nonlinear galloping mode galloping characteristics iced conductor |
| Author | Institution |
| 沈祺航 |
重庆交通大学 土木工程学院, 重庆 |
| 刘小会 |
重庆交通大学 土木工程学院, 重庆 ;重庆交通大学 省部共建山区桥梁及隧道工程国家重点实验室, 重庆 |
| 闵光云 |
重庆交通大学 土木工程学院, 重庆 ;中山大学 中法核工程与技术学院, 珠海 |
| 伍川 |
国网河南省电力公司电力科学研究院, 郑州 |
| 张博 |
国网河南省电力公司电力科学研究院, 郑州 |
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| Abstract: |
| The single span conductor of a tension section is taken as the research object.Based on Hamiltonian principle and incremental thermal field theory,the galloping equations of transmission lines are derived,which consider the effect of temperature on ice-covered conductor.The discrete in-plane and out-of-plane coupled finite dimensional galloping equations are obtained by using approximate and complex modes respectively,then the approximate solutions of the equations are obtained by using the multi-scale method.Numerical examples show that the influence of temperature on the natural frequency is related to the Irvine parameter,the influence on tension is related to the range of initial tension,and the cooling will increase the transverse amplitude of the conductor.The amplitude calculated by using the exact mode is significantly smaller than that calculated by using the approximate mode. |
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