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利用宏观检验、化学成分分析、断口形貌分析、显微组织检验、机械性能测试等试验方法及有限元分析方法对断裂的某220 kV输电线路高压架空地线进行了分析，结果表明，在长期微风振动作用下，架空地线承受交变弯曲应力，在柔性绞线与刚性压接管端部形成应力集中开裂，并以疲劳的方式断股，造成其承载能力大幅下降，最终在自重及风载荷等外力作用下断股的地线彻底断裂并跌落。
Abstract：The fractured high voltage overhead ground wire of a 220 kV transmission line is investigated by means of macroscopic inspection, chemical composition analysis, fracture morphology analysis, microstructure inspection, mechanical performance test and finite element analysis. The results show that under the action of long - term aeolian vibration, the overhead ground wire withstands alternating bending stress, which leads to stress concentration cracking at the ends of flexible steel strands and rigid press - connecting - tube. Then the ground wire monofilament brake in a fatigue manner, resulting in a significant decline in the load - bearing capacity. Finally, under the action of external forces such as self weight and wind load, the ground wire with broken strands completely brakes and fells.
[1] 张鹏,周胜堃,郑哲.架空地线断股损伤及防范措施分析[J].电力安全技术, 2022, 24(1):67-68. ZHANG Peng, ZHOU Shengkun, ZHENG Zhe. Analysis on strand breaking damage of overhead grounding wires with preventive measures[J]. Electric Safety Technology, 2022, 24(1):67-68.
[2] 王津,王文卓,徐浩,等.一起架空输电线路导线断线故障分析[J].机械研究与应用, 2022, 35(1):203-205. WANG Jin, WANG Wenzhuo, XU Hao, et al. Failure analysis of an overhead transmission line[J]. Mechanical Research&Application, 2022, 35(1):203-205.
[3] 全国钢标准化技术委员会.制丝用非合金钢盘条第2部分一般用途盘条:YB/T 170.2-2000[S].北京:中国标准化出版社, 2002.
[4] 高琦,王璋奇.架空地线热稳定性的有限元方法及应用[J].电工技术, 2021(13):111-113. GAO Qi, WANG Zhangqi. Finite element analysis and application of thermal stability of overhead ground wire[J]. Electric Engineering, 2021(13):111-113.
[5] 张昭,周立宪,齐翼,等.大跨越导线微风振动强度影响因素[J].振动.测试与诊断, 2021, 41(4):710-714. ZHANG Zhao, ZHOU Lixian, QI Yi, et al. The main influencing factors of the vibration intensity of large crossing conductor under Aeolian vibration[J]. Journal of Vibration, Measurement&Diagnosis, 2021, 41(4):710-714.
[6] 全国裸电线标准化技术委员会.架空绞线用镀锌钢线:GB/T 3428-2012[S].北京:中国标准化出版社, 2012.
[7] 张涛,高云鹏,田峰,等.500 kV超高压输电线路架空地线频繁断股原因分析[J].内蒙古电力技术, 2019, 37(1):11-15. ZHANG Tao, GAO Yunpeng, TIAN Feng, et al. Cause Analysis of Frequent Broken Strands of Overhead Ground Wire on 500 kV Transmission Line[J]. Inner Mongolia Electric Power, 2019, 37(1):11-15.
[8] 杨剑锋.一起微风振动导致引流线断裂故障的分析及预防[J].宁夏电力, 2020(1):8-12. YANG Jianfeng. Analysis and prevention of a drainage line fracture caused by breeze vibration[J]. Ningxia Electric Power, 2020(1):8-12.
[9] 王显录,刘存建.张拉控制应力对钢绞线组织和性能的影响性研究[J].工程建设与设计, 2022(8):157-159. WANG Xianlu, LIU Cunjian. Study on effect of tension control stress on microstructure and properties of steel strand[J]. Construction&Design for Project, 2022(8):157-159.
[10] 周龙武,燕秀,黎诗义,等.特高压线路脉动风风偏特性及抑制措施仿真[J].电瓷避雷器, 2022(4):194-200. ZHOU Longwu, YAN Xiu, LI Shiyi, et al. Simulation of fluctuating wind deflection characteristics and suppression measures for UHV transmission lines[J]. Insulators and Surge Arresters, 2022(4):194-200.
[11] 王强,楼文娟,徐海巍,等.考虑时变气象参数的输电导线覆冰数值仿真[J].哈尔滨工业大学学报, 2022, 54(11):1-12. WANG Qiang, LOU Wenjuan, XU Haiwei, et al. Numerical simulation of icing on transmission conductors considering time-varying meteorological parameters[J]. Journal of Harbin Institute of Technology, 2022, 54(11):1-12.
[12] 田连博,李子扬,赵庆周,等.基于有限元-无限元法的高压输电线路电磁环境仿真研究[J].电工技术, 2022(1):17-20. TIAN Lianbo, LI Ziyang, ZHAO Qingzhou, et al. Electromagnetic environment simulation of high voltage transmission line based on finite element and infinite element method[J]. Electric Engineering, 2022(1):17-20.
[13] 苏睿,李刚俊,郭成操,等.巡线机器人的刚柔耦合动力学特性仿真研究[J].中国测试, 2021, 47(11):75-79. SU Rui, LI Gangjun, GUO Chengcao, et al. Simulation of rigid and flexible coupling dynamics for inspection robot[J]. China Measurement&Testing Technology, 2021, 47(11):75-79.
[14] 陈浩,田峰,张涛,等.110 kV输电线路悬式绝缘子钢脚断裂原因分析[J].内蒙古电力技术, 2022, 40(6):37-40. CHEN Hao, TIAN Feng, ZHANG Tao, et al. Fracture Cause Analysis of Steel Foot of Suspension Insulator Used in 110 kV Transmission Line[J]. Inner Mongolia Eletric Power, 2022, 40(6):37-40.
[15] 张伟勇,周帅,陈海鑫,等.汽轮机高压旁路取压管振动交变应力分析[J].浙江电力, 2023, 42(1):97-102. ZHANG Weiyong, ZHOU Shuai, CHEN Haixin, et al. Study on vibration alternating stress of pressure tapping pipe of high-pressure by?pass pipeline of the steam turbine[J]. Zhejiang Electric Power, 2023, 42(1):97-102.
[16] 王玉生,吴文江,李灿阳,等.吊弦钳压管处损伤仿真分析与实验研究[J].石家庄铁道大学学报(自然科学版), 2022, 35(3):104-110. WANG Yusheng, WU Wenjiang, LI Canyang, et al. Simulation analysis and experimental study of damage at the dropper pressure clamp tube[J]. Journal of Shijiazhuang Tiedao University (Natural Science Edition), 2022, 35(3):104-110.
[17] 宋文硕,宋竹满,罗雪梅,等.粗糙表面高强铝合金导线疲劳寿命预测[J].金属学报, 2022, 58(8):1035-1043. SONG Wenshuo, SONG Zhuman, LUO Xuemei, et al. Fatigue life prediction of high strength aluminum alloy conductor wires with rough surface[J]. Acta Metallurgica Sinica, 2022, 58(8):1035-1043.
基本信息:
DOI：10.19929/j.cnki.nmgdljs.2024.0011
中图分类号:
引用信息:
[1]陈浩1,2, 房文轩1,2, 张涛1,2等.220 kV输电线路高压架空地线疲劳断裂原因分析[J].内蒙古电力技术,2024,42(01):67-70.DOI:10.19929/j.cnki.nmgdljs.2024.0011.
基金信息:
内蒙古电力（集团）有限责任公司科技项目“输电铁塔球头连接金具断裂机理及疲劳寿命提升关键技术研究”（2022-08）