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[1]曹桂,张血琴,吴广宁.基于流固耦合腕臂复合绝缘子抗风性能研究[J].高压电器,2019,55(05):125-130.[doi:DOI:10.13296/j.1001-1609.hva.2019.05.020]
 CAO Gui,ZHANG Xueqin,WU Guangning.Research on the Wind?resistant Structure of Composite Insulators for Overhead Contact System Cantilever Based on Fluid?structure Interaction Method[J].High Voltage Apparatus,2019,55(05):125-130.[doi:DOI:10.13296/j.1001-1609.hva.2019.05.020]
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基于流固耦合腕臂复合绝缘子抗风性能研究()
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《高压电器》[ISSN:1001-1609/CN:61-11271/TM]

卷:
第55卷
期数:
2019年05期
页码:
125-130
栏目:
研究与分析
出版日期:
2019-05-20

文章信息/Info

Title:
Research on the Wind?resistant Structure of Composite Insulators for Overhead Contact System Cantilever Based on Fluid?structure Interaction Method
作者:
曹桂12 张血琴1 吴广宁1
(1. 西南交通大学电气工程学院,成都610031;2. 国网山东省电力公司检修公司,济南250118)
Author(s):
CAO Gui12ZHANG Xueqin1WU Guangning1
(1. College of Electrical Engineering,Southwest Jiaotong University,Chengdu 610031,China;2. State Grid Shandong Electric Power Maintenance Company,Jinan 250118,China)
关键词:
复合绝缘子流固耦合伞裙形变
Keywords:
composite insulatorfluid?structure interactiondeformation of sheds
DOI:
DOI:10.13296/j.1001-1609.hva.2019.05.020
摘要:
强风环境会引起复合绝缘子伞裙发生形变,导致伞裙根部出现?#29616;?#30340;应力集中。在周期循环风载荷作 用下,伞裙根部长期处于应力疲劳状态并最终导致伞裙撕裂问题。针对上述问题,文中以铁路系统腕臂复合 绝缘子为对象,建立腕臂复合绝缘子流固耦合三维仿真计算模型,研究伞裙形变量与伞裙根部应力?#23433;?#21516;风 速、不同迎风角与绝缘子伞裙形变量的关系。研究结果表明:从整体来看,根部倒角半径对形变的影响是非常 小的,非重要抗风结构参数;在同一风速下,迎风角为17°时伞裙形变量最大,迎风角为84°时伞裙形变量最小; 随着下倾角的增加,绝缘子伞裙边沿产生最大形变的迎风角逐渐减小;伞裙下倾角增加到7°时,同时伞裙边沿 形变从5 mm平稳下降到0.85 mm,伞裙下倾角的增加有效抑制了伞裙边缘形变量的上升,对绝缘子抗风性能 具有极其重要的影响。文中根据以上研究结果,优化腕臂复合绝缘子的伞裙结构,提高了绝缘子的抗风性能。
Abstract:
Composite insulators will appear deformation under the strong wind,and make serious stress concentra? tion at the roots of the sheds. The roots of insulator sheds are in the state of stress fatigue under the cyclic wind load, and finally lead to shed cracks. In allusion to the problems mentioned above,with the composite insulator for over? head contact system cantilever as the object,a model of 3D computer simulation was established. This paper discuss? es the relationship between deformation of the sheds and stress of the roots of insulator sheds,and explored the influ? ence of wind speed,angle of wind approach and deformation of the sheds. The research shows that the effect of the roots of the chamfering radius on the deformation is minimal. It is unimportant structural parameters of wind resis? tance. When the angle of wind approach is 17°,the deformation of the sheds is biggest under same wind velocity,the angle of wind approach is 84°,the deformation of the sheds is smallest under same wind velocity. When the lower an? gle of the sheds is 7°,the edge deformation of sheds decreases steadily from 5 mm to 0.85 mm,and the increase of the inclination angle of sheds effectively restrains the increase of the edge deformation of sheds,which has an ex? tremely important impact on the wind resistance of insulators. Based on the above research results,the sheds struc? ture of cantilever composite insulators is optimized to improve the wind resistance of insulators.

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备注/Memo

备注/Memo:
收稿日期:2018?12?14; 修回日期:2019?02?03 基金项目:国家自然科学基金项目(青年科学基金)(51507146)。 Project Supported by National Natural Science Foundation of China (National Science Foundation for Young Scientists of China) (51507146).曹桂(1991—),男,硕士研究生,主要从事绝缘子检测 和外绝缘方面的研?#25239;?#20316;。 张血琴(1974—),女,博士,副教授,主要从事高电压试验 技术、绝缘子检测和外绝缘方面的研?#25239;?#20316;。 吴广宁(1969—),男,博士,博导,教育部“长江学者奖励 计划”特聘教授,主要从事高电压与绝缘技术及电气化铁路 方面的教学和研?#25239;?#20316;。
更新日期/Last Update: 2019-05-20
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