Finite element analysis of composite insulating cross arms under high wing conditions

doi:10.19936/j.cnki.2096-8000.20241128.014

Abstract

Abstract: In recent years, extreme weather has occurred frequently, posing great risks to the normal operation of the power grid. The use of new composite insulation cross arms has effectively improved the insulation performance and resistance to strong winds of transmission lines. This article investigates the displacement and stress of the 110 kV composite insulated cross arm structure under wind directions of 0°, 90°, 45°, and 60°. The research results show that the composite cross arm is generally stable and reliably connected at a design wind speed of 27 m/s. The maximum displacement occurs in the middle of the tie rod at 0° wind direction, reaching 16.95 mm, and the maximum equivalent stress is located on the connecting component on the tower side of the 0° wind direction, with a value of 81.21 MPa. By changing the wind speed through the lifting and lowering method, the maximum wind speed for stable operation is predicted to be about 31 m/s, which has the ability to resist level 11 storms.

Key words: composite insulating cross arm, mechanical properties, high wind condition, finite element analysis, composites

CLC Number:

TB332

CAI Wei, LIU Jinghua, WU Xiong, LI Jian, SUN Qigang. Finite element analysis of composite insulating cross arms under high wing conditions[J]. COMPOSITES SCIENCE AND ENGINEERING, 2024, 0(11): 100-107.

References

[1] 郭浩, 章志鸿, 乐天达, 等. 老旧输电铁塔结构安全分析与加固仿真研究[J]. 电工电气, 2019(5): 7-11.
[2] 陈云, 强春媚, 王国刚, 等. 输电铁塔的腐蚀与防护[J]. 电力建设, 2010, 31(8): 55-58.
[3] 高岩, 黄殷辉, 郑志军, 等. Q235钢在广东省输电杆塔现场的大气腐蚀行为[J]. 华南理工大学学报(自然科学版), 2018, 46(7): 39-46.
[4] LASHMAR N, YOUNG BERRYMAN S, LIDDELL M J, et al. Environmental impacts of abrasive blasting of transmission towers in protected areas[J]. Journal of Environmental Management, 2019, 252: 109430.
[5] 夏令志, 程洋, 严波, 等. 2018年1月安徽电网输电线路覆冰舞动故障规律分析[J]. 安徽电气工程职业技术学院学报, 2019, 24(1): 73-77.
[6] 张景瑞, 张媛媛. 台风温比亚过程分析及影响[J]. 农家参谋, 2019(16): 166.
[7] 张媛, 喻新强, 李峰, 等. 用于交流特高压工程的GFRP横担塔关键技术研究[J]. 高电压技术, 2018, 44(7): 2402-2409.
[8] 刘云鹏, 王琬娴, 刘贺晨, 等. 玄武岩纤维增强脂环族改性双酚A环氧树脂的耐盐雾性能[J]. 高电压技术, 2023, 49(10): 4373-4381.
[9] 夏开全. 复合材料在输电杆塔中的研究与应用[J]. 高科技纤维与应用, 2005(5): 23-27.
[10] 张铭嘉. 充气型复合绝缘横担密封失效特性及其对内部绝缘特性的影响研究[D]. 北京: 华北电力大学, 2020.
[11] ASYRAF M R M, ISHAK M R, SAPUAN S M, et al. Potential application of green composites for cross arm component in transmission tower: A brief review[J]. International Journal of Polymer Science, 2020, 1-15.
[12] LI H, XIANG N, BAO H, et al. Lightning protection performance of quadruple-circuit 500 kV transmission lines on the same tower with composite cross arm[J]. Energy Reports, 2022, 8: 520-526.
[13] 李亮, 许可, 周建鸣. 500 kV双回路直线塔复合横担改造方案研究[J]. 电力勘测设计, 2020(3): 49-53.
[14] 张文锋, 李先志, 朱道俊, 等. 基于复合横担的水泥杆塔改造方法[C]//2020年工业建筑学术交流会论文集(上册). 2020: 103-108.
[15] 黄颖, 王婧, 谭蓉, 等. 330 kV双回路复合横担窄基塔设计及有限元仿真分析[J]. 特种结构, 2019, 36(5): 97-102, 107.
[16] 蔡康毅, 方晴, 杜新喜, 等. 高压输电线路复合横担受力性能研究[J]. 工业建筑, 2020, 50(4): 162-167, 150.
[17] SELVARAJ M, KULKARNI S, BABU R R. Analysis and experimental testing of a built-up composite cross arm in a transmission line tower for mechanical performance[J]. Composite Structures, 2013, 96: 1-7.
[18] 架空输电线路杆塔结构设计技术规定: DL/T 5154-2012[S]. 北京: 中国计划出版社, 2012.
[19] 杜平安. 有限元网格划分的基本原则[J]. 机械设计与制造, 2000(1): 34-36.
[20] GUI C, BAOJIANG C. Research on the wind-resistant structure of composite insulators for overhead contact system cantilever used based on fluid-structure interaction method[C]//2016 IEEE International Conference on High Voltage Engineering and Application (ICHVE). Chengdu, China: IEEE, 2016: 1-4.
[21] 国家电网公司员工全力投入台风“苏迪罗”抢险救灾[J]. 电力安全技术, 2015, 17(8): 8.
[22] 闫国臣, 李先立, 李小荷. 风力等级、风速与风压的对应关系研究[J]. 门窗, 2014(8): 56-57.