高电压技术2013，Vol.39Issue(3)：755-761,7.DOI:10.3969/j.issn.1003-6520.2013.03.036
输电线路档距组合对覆冰导线动态特性的影响分析
Impact Analysis of Transmission Line Span Combination on Dynamic Characteristics of Iced Conductor
摘要
Abstract
In order to further,study dynamic characteristics of tower-line system, and to complete the influence rule of related parameters affecting iced conductors and towers, we simulated and calculated typical lines by applying a dynamic program of three degrees of freedom multiple span combination simulating actual lines. Through the control variable method, the span combination law for the unbalanced tension of the tower-line system was obtained, and effect of the existing phase-to-phase spacers' installation strategy on the conductors of the adjacent span was discussed. Several conclusions can be drawn according to the simulation results: when wind deviation happens, the unbalanced tension increases faster and faster with the span increasing; when ice-shedding happens, the unbalanced tension increases with the span increasing, but the changes in unbalanced tension of shedding span and un-shedding span are different; when galloping happens, the unbalanced tension increases with the span increasing, but the waveforms of unbalanced tension between galloped span and ungalloped span are different. Moreover, it is concluded that applying the existing phase-to-phase spacers' installation strategy, the phase-to-phase spacer installation has little effect on the mechanics of its neighboring span, but it reduces the galloping amplitude while barely increasing the mechanical burden of tower-line systems.关键词
覆冰导线/档距组合/塔线系统/不平衡张力/大风风偏/脱冰跳跃/导线舞动/相间间隔棒Key words
iced conductor/ span combination/ tower-line system/ unbalanced tension/ wind deviation/ ice-shedding/ conductor galloping/ phase-to-phase spacer引用本文复制引用
张欢,李炜,张亚军,王黎明,孙保强,傅观君..输电线路档距组合对覆冰导线动态特性的影响分析[J].高电压技术,2013,39(3):755-761,7.基金项目
国家电网公司科技项目(SGKJ[2011]295). （SGKJ[2011]295）
