Influence of insulator rupture on structural behavior of power transmission tower under wind load

被引：0
|
作者：
He M. [1 ]
Liu H. [1 ]
机构：
[1] Department of Building Engineering, Tongji University
来源：
Tongji Daxue Xuebao/Journal of Tongji University | 2010年 / 38卷 / 01期
关键词：
Insulator rupture; Nonlinear finite element; Power transmission tower; Transient response;
D O I：
10.3969/j.issn.0253-374x.2010.01.005
中图分类号：
学科分类号：
摘要：
Based on Davenport wind speed spectrum, harmonic superposition method was available to simulate the dynamic wind load commercial FEM software ANSYS was employed to analyze the three towers and four-span straight-cup-transmission lines model. Geometric nonlinearity was taken into account in FEM model, structural behavior of the transmission tower was investigated when insulator rupture and wind force 10 loading case happened simultaneously. Analytical results show that after insulator rupture, the stress of the main structural members such as the columns remaining connected with the lines increases by 10%~32%, and the base reaction force increases by 6%~21%. The combined action of wind-load and insulator-rupture can not be neglected in design.
引用
收藏
页码：30 / 34
页数：4
相关论文
共 12 条
  • [1] Cheng J., Reasons and countermeasures of brittle fracture for composite insulator core rod on EHV transmission Line, Electrical Equipment, 8, 7, (2007)
  • [2] Lu M., Ma X., Yan D., Et al., Analysis on causes of brittle fracture of composite insulator cores, Insulators and Surge Arrester, 4, (2007)
  • [3] Liu Z., Liang J., Analysis of composite insulator operation and fault situation in 2006 for Jiangsu power grid. Jiangsu, Electrical Engineering, 26, 3, (2007)
  • [4] Siddiqui F.M.A., Dynamic analysis and behavior of electric transmission line systems subjected to broken wires, (1981)
  • [5] McClure G., Tinawi R., Mathematical modeling of the transient response of electric transmission lines due to conductor breakage, Computers and Structures, 26, (1987)
  • [6] McClure G., Lapointe M., Modeling the structural dynamic response of overhead transmission lines, Computers and Structures, 81, (2003)
  • [7] DL/T 5154-2002 Technical regulation of design for tower and pole structures of overhead transmission line, (2002)
  • [8] He Y., Study of seismic behaviour and insulator ruptures on transmission tower, (2006)
  • [9] Shen S., Xu C., Zhao C., Et al., Design of Cable Structure, (2006)
  • [10] Liu X., Zhou Y., Numerical simulation methods of wind load, Industrial Construction, 35, 5, (2005)
12