摘要
为保证高铁安全运行,高速铁路接触网架设避雷线是一种简单有效的防雷措施。结合高速铁路接触网的结构特点,基于电气几何模型和滚球法对避雷线的屏蔽性能进行分析,推导高架桥区段单、复线铁路接触网避雷线的架设高度计算方法。研究结果表明:滚球法比电气几何模型法的计算结果更精确,过程更简捷。单线铁路的接触网避雷线高度明显高于复线铁路的避雷线架设高度。且随着高架桥高度的增高,避雷线的架设高度也随之增高,近似成线性增长。避雷线的高度还受到滚球半径的影响,滚球半径越大,避雷线架设的高度越低,设计避雷线高度需要采用合适的滚球半径。
It is very important to ensure the safe operation of high-speed railways.It is a simple and convenient lightning protection measure to erect lightning protection lines on the catenary of high-speed railways.Based on the structural characteristics of the catenary of high-speed railway,the shielding performance of the lightning protection line was analyzed based on the electrical geometric model and the rolling ball method.The calculation method for the erection height of the catenary lightning protection line of single and double track railways in the viaduct section was deduced.The results show that the rolling ball method is more accurate than the electrical geometric model method,and the process is more concise.The height of the catenary lightning protection line of the single-track railway is significantly higher than that of the double-track railway.With the increase in the height of the viaduct,the erection height of the lightning protection line also increases,almost linearly.The height of the lightning protection line is affected by the radius of the rolling ball.The larger the radius of the rolling ball,the lower the height of the lightning protection line.The design of the height of the lightning protection line requires a suitable rolling ball radius.
作者
王思华
王宇
李萍
陈天宇
WANG Sihua;WANG Yu;LI Ping;CHEN Tianyu(College of Automation&Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Rail Transit Electrical Automation Engineering Laboratory of Gansu Province(Lanzhou Jiaotong University),Lanzhou 730070,China)
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2021年第7期1715-1722,共8页
Journal of Railway Science and Engineering
基金
国家自然科学基金资助项目(51767014)
中国铁路总公司科技研究开发计划项目(2017J010-C)。
关键词
高架桥
接触网
避雷线
电气几何模型
滚球法
滚球半径
viaduct
catenary
lightning protection line
electrical geometric model
rolling ball method
rolling ball radius
