摘要
基于电气几何模型,推导单线和复线铁路接触网避雷线架设高度的计算公式,由此得到避雷线架设高度与雷电击距、接触网实际参数之间的对应关系。研究表明:避雷线架设高度随着雷电流幅值的增加而减小,复线铁路的避雷线架设高度明显小于单线铁路的避雷线架设高度。采用给出的避雷线架设高度的计算公式,以广—深铁路为例,根据其不同线路形式和接触网参数计算得出避雷线架设高度的建议值:单线和复线铁路接触网的避雷线架设高度分别取9.0和7.2m;4线铁路并行时,4根支柱并列情况下的接触网避雷线架设高度取7.6m,4线硬横梁形式的接触网避雷线架设高度取7.5m,对于4线中3线为硬横梁形式、另1线为支柱形式的接触网,3线和1线的接触网避雷线架设高度分别取7.3和9.0m。
Based on the Electric Geometry Model（EGM）,the formulas for calculating the installation height of catenary ground wire for single-track and double-track railway were derived,from which the corresponding relationships between the installation height of the ground wire and the lightning striking distance as well as the actual parameters of catenary were obtained.Research shows that the installation height of the ground wire decreases with the increase of the amplitude of lightning current.The installation height of the ground wire for double-track railway is obviously smaller than that for single-track railway.Taking Guangzhou-Shenzhen Railway for example,according to its different line forms and catenary parameters,and by adopting the presented formulas,the suggested values are obtained for the installation height of the ground wire.9.0 and 7.2 m are respectively adopted as the installation height of catenary ground wire for single-track railway and double-track railway.As for parallel four-track railway,7.6 m is adopted as the installation height of ground wire for four parallel support post catenaries,and 7.5 m is adopted for four rigid portal structure catenaries.7.3 and 9.0 m are respectively adopted for three rigid portal structure catenaries and one support post catenaries.
出处
《中国铁道科学》
EI
CAS
CSCD
北大核心
2011年第6期89-93,共5页
China Railway Science
基金
铁道部科技研究开发计划项目(2009J013-2)
关键词
接触网
防雷
避雷线高度
电气几何模型
Catenary
Lightning protection
Height of ground wire
Electric geometry model
