多跨覆冰导线脱冰振动模型风洞试验研究

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (3) : 223-229.

论文

多跨覆冰导线脱冰振动模型风洞试验研究

刘敏1，晏致涛2,1，冯上铭1,游溢1,3

作者信息 +

Wind tunnel model tests for ice-shedding vibration of multi-span icing conductors

LIU Min1,YAN Zhi-tao2,1,FENG Shang-ming1,YOU Yi1,3

Author information +

文章历史 +

摘要

覆冰导线脱冰可能造成金具、导线和杆塔等构件受力破坏，也可能会引起导线闪络、烧断等电力事故。本文设计了1：50的三跨覆冰导线的缩尺模型，采用熔断集中荷载的方法模拟导线脱冰，共七种工况研究三跨导线中脱冰量、脱冰跨位置、覆冰厚度和风速等参数不同时，导线的冰跳高度、导线张力和绝缘子轴力变化规律。结果表明：边跨脱冰将引起比中间跨脱冰更大的竖向振动，跳跃高度增大了近7%,导线张力也有明显增大；在风荷载作用时，导线脱冰振动会受气动阻尼影响，跳跃高度和振动周期都有所减小，导线张力和悬垂绝缘子的轴力随着风荷载增大而增大。

Abstract

Icing conductors’ ice-shedding may lead to damages of end fittings, wires and towers, and even tower collapse and other machinery accidents. A three-span 1:50 scale model tests for icing conductors were conducted to obtain conductor’s ice-jump height, conductor’s tension force and axial force changes of insulators. In tests, ice-shedding loads were simulated with suddenly dropping dead-weights from conductors. Seven ice-shedding cases were studied with different magnitudes of ice-shedding, positions of ice-shedding span, ice thicknesses and wind velocities, etc. The results showed that conductor side-span ice-shedding causes larger vertical vibration than mid-span ice-shedding does, conductor’s jumping height increases by near 7% and conductor’s tension force rises obviously; when there are wind loads, conductor’s ice-shedding vibration is affected by aerodynamic damping, conductor’s jumping height and vibration period become smaller, conductor tension force and insulator axial force increase with increase in wind loads.

导出引用

刘敏1，晏致涛2,1，冯上铭1,游溢1,3. 多跨覆冰导线脱冰振动模型风洞试验研究[J]. 振动与冲击, 2018, 37(3): 223-229

LIU Min1,YAN Zhi-tao2,1,FENG Shang-ming1,YOU Yi1,3. Wind tunnel model tests for ice-shedding vibration of multi-span icing conductors[J]. Journal of Vibration and Shock, 2018, 37(3): 223-229

参考文献

[1] 孔晨华．2014年甘肃陇南地区耐张塔覆冰倒塔事故分析及研究[J]．中国电业，2015，10(5)，30-34．
KONG Chen-hua．Accident analysis and research of the tower collapse by ice coating of the transmission line in Longnan area，Gansu province in 2014 [J]．China electric power，2015，10(5)，30-34(in Chinese)．
[2] 何建，杨振国，冯文礼，等．辽宁电网“11.7”覆冰灾害分析[J]．吉林电力，2016，44(1)：46-49．
HE Jian，YANGZhen-guo，FENG Wen-li，et al．11.7 Icing disaster analyses in Liaoning power system [J]．Jilin Electric Power，2016，44(1)：46-49(in Chinese)．
[3] 杨伦，楼文娟，陈勇，等．覆冰导线导线舞动作用下输电塔破坏机理的试验研究[J]．振动与冲击，2013，32（24）：70-82．
YANG Lun，LOU Wen-juan，CHEN Yong，et al．Test for failure mechanism of a transmission tower under iced conductor galloping[J]．Journal of Vibration and Shock，2013，32（24）：70-82(in Chinese)．
[4] 孙珍茂，楼文娟．覆冰输电导线舞动及防舞效果分析[J]．振动与冲击，2010，29（5）：141-146．
SUN Zhen-mao，LOU Wen-juan．Analysis of iced transmission line galloping and effect of anti-galloping [J]．Journal of Vibration and Shock，2010，29（5）：141-146(in Chinese)．
[5] 张喆，杨秀萍，郝淑英，等．覆冰导线动态气动力特性模拟与分析[J]．振动与冲击，2015，34(7)：209-214．
ZHANG Zhe，YANG Xiu-ping，HAO Shu-ying，et al．Numerical simulation and analysis of dynamic aerodynamic characteristics of iced conductor [J]．Journal of Vibration and Shock，2015，34(7)：209-214 (in Chinese) ．
[6] Morgan V T，Swift D A．Jump height of overhead-line conductors after the sudden release of ice loads [J]．Proceedings of IEE，1964，111(10)：1736-1746．
[7] Jamaleddine A，Mcglure G，Rousselet J．Simulation of Ice-shedding on electrical transmission lines using ADINA [J]．Computers and Structures，1993，47(4-5)：523―536．
[8] MENG Xiao-bo，WANG Li-ming，HOU Lei，et al．Dynamic characteristic of ice-shedding on UHV overhead transmission lines [J]．Cold Regions Science and Technology，2011，66(1)：44-52．
[9] MENG Xiao-bo，HOU Lei，WANG Li-ming，et al．Oscillation of conductors following ice-shedding on UHV transmission lines [J]．Mechanical Systems and Signal Processing，2012，30：393-406．
[10] 孟晓波，王黎明，候镭，等．特高压输电线路导线脱冰跳跃动态特性[J]．清华大学学报(自然科学版)，2010，50(10)：1631-1636．
MENG Xiao-bo，WANG Li-ming，HOU Lei，et al．Dynamic characteristics of ice-shedding on UHV overhead transmission lines [J]．J Tsinghua Univ (Sci & Tech)，2010，50(10)：1631-1636 (in Chinese)．
[11] 蒋兴良，毕茂强，黎振宇，等．自然条件下导线直流融冰与脱冰过程研究[J]．电网技术，2013，37(9)： 2626-2631．
JIANG Xing-liang，BI Mao-qiang，LI Zhen-yu，et al．Study on DC ice melting and ice shedding process under natural condition [J]．Power System Technology，2013，37(9)： 2626-2631(in Chinese)．
[12] 苏士斌．架空线脱冰动张力的模拟实验研究[D]．保定：华北电力大学，2013．
SU Shi-bin. Experimental investigation on dynamic tension of overhead line caused by ice-shedding [D]．Baoding：North China Electric Power University，2013(in Chinese)．
[13] 杨文刚，苏士斌，王璋奇，等．导线脱冰振动的模拟实验研究[J]．振动、测试与诊断，2013, 33(5): 892-896．
YANG Wen-gang，SU Shi-bin，WANG Zhangqi，et al．Simulation experiment of ice shedding from cable [J]．Journal of vibration, Measurement & Diagnosis．2013，33(5)：892-896(in Chinese)．
[14] 蒋全才，朱博云，吴金辉，等．风速对架空输电线路导线脱冰跳跃的影响[J]．广东电力，2015，28(9)：127-130．
JIANG Quan-cai，ZHU Bo-yun， WU Jin-hui，et al．Influence on ice shedding of overhead power transmission line conductor by wind speed [J]．Guangdong Electric Power，2015，28(9)：127-130(in Chinese)．
[15] 张磊，孙奉仲，高明，等．侧风下自然通风湿式冷却塔出口气流的试验研究[J]．中国电机工程学报，2015，35(4)：891-897．
ZHANG Lei，SUN Feng-zhong，GAO Ming，et al．Experimental Research for outlet airflow of natural draft wet cooling tower under crosswind conditions [J]．Proceeding of the CSEE，2015，35(4)：891-897(in Chinese)．
[16] 陈勇，胡伟，王黎明，等．覆冰导线脱冰跳跃特性研究[J]．中国电机工程学报，2009, 29(28)：115-121．
CHEN Yong，HU Wei，WANG Li-ming，et al．Research on ice-shedding characteristic of icing conductor [J]．Proceeding of the CSEE，2009，29(28)：115-121(in Chinese)．
[17] 胡伟，陈勇，蔡炜等．1000kV交流同塔双回输电线路导线脱冰跳跃特性[J]．高电压技术，2010，36(1)：275-280．
HU Wei，CHEN Yong，CAI Wei，et al．Ice-shedding Characteristic of 1000 kV AC double circuit transmission line on the same tower [J]．High Voltage Engineering，2010，36(1)：275-280(in Chinese)．
[18] 王璋奇，齐立中，杨文刚，等．集中质量法模拟覆冰在架空线脱冰动张力实验中的适用性研究[J]．中国电机工程学报，2014，34(12)：1982-1988．
WANG Zhang-qi，QI Li-zhong，YANG Wen-gang，et al．Research on the applicability of lumped mass method for cable’s dynamic tension in the ice shedding experiment [J]．Proceeding of the CSEE，2014，34(12)：1982-1988(in Chinese)．
[19] 楼文娟，杨悦，吕中宾，等．考虑气动阻尼效应的输电线路风偏动态分析方法[J]．振动与冲击，2015，34(6)：24-29．
LOU Wen-juan，YANG Yue，LV Zhong-bin，et al．Windage yaw dynamic analysis methods for transmission lines considering aerodynamic damping effect [J]．Journal of Vibration and Shock，2015，34(6)：24-29(in Chinese)．
[20] 断成荫，邓洪洲．基于特征系统实现算法的输电塔气动阻尼风洞试验研究[J]．振动与冲击，2014，33(21)：131-136．
DUAN Cheng-yin，DENG Hong-zhou．Wind tunnel tests for aerodynamic damping of a transmission tower based on eigensystem realization algorithm [J]．Journal of Vibration and Shock，2014，33(21)：131-136(in Chinese)．