J4  2011, Vol. 45 Issue (11): 1960-1965    DOI: 10.3785/j.issn.1008-973X.2011.11.012
 土木工程

1 浙江大学 土木工程学系,浙江 杭州,310058；2 成都基准方中建筑设计事务所,四川 成都 610017
Function of insulators in the dynamic analysis of transmission line system
SHEN Guo-hui1, YUAN Guang-hui2, LOU Wen-juan1, SUN Bing-nan1
1. Department of Civil Engineering, Zhejiang University, Hangzhou 310058, China;
2. Chengdu Jizhun Fangzhong Architectural Design Associates, Chengdu 610017, China
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Abstract:

A methodology to change the lengths of insulators in the dynamic analysis was employed to investigate the function of the insulators. The finite element models of transmission line with and without insulators were built. The difference of vibration characteristics between the models with and without insulator was analyzed. The function of insulators on along-line responses of transmission line system was investigated using ice shedding analysis and the function of insulator on along-line and cross-line responses was investigated using seismic analysis. Results show that the swing of the insulators has significant effect on the reduction of unbalanced longitudinal forces induced by ice-shedding impact. And if the length of the insulators is longer, the effect of reduction will be better. In seismic analysis, the insulator has significant effect to reduce the responses in the along-line direction and has insignificant effect on the responses in the cross-line direction. The discrepancy will be introduced in the dynamic analysis of transmission line system if a calculating model without insulators is used．

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SHEN Guo-hui, YUAN Guang-hui, LOU Wen-juan, SUN Bing-nan. Function of insulators in the dynamic analysis of transmission line system. J4, 2011, 45(11): 1960-1965.

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