Dynamic Analysis on the V-String Offset and the Unbalanced Tension from Iced Broken Conductors
A seven span conductor-V string finite element analysis(FEA)model of ±1100kV line section was established in general software ANSYS.The initial tension of conductors can be applied by reducing temperature method.The damping of the conductor-V string system was realized by Rayleigh damping form.Four sub-conductors were assumed be broken simultaneously.The conductor elements at the broken point were killed for realizing the conductor breakage simulation.By using nonlinear transient analyzing method,time histories of the V string offset and the unbalanced tension at the suspension point with and without sub-spacers were calculated.When considering the effect of the sub-spacers,the peak values of the V string offset and the unbalanced tension are lower than the design values calculated by static model without sub-spacers.It is safe for determine the scheme stretching into the tower body and the unbalanced tension by design values.
broken conductors V string offset unbalanced tension sub-spacer
YANG Fengli LI Zheng
China Electric Power Research Institute Beijing,China
国际会议
重庆
英文
1-5
2017-09-25（万方平台首次上网日期，不代表论文的发表时间）