摘要
高速铁路牵引回流分布复杂,有必要对其进行精确的建模分析。采用平行多导体传输线理论,搭建统一的牵引网数学模型,实现针对不同空间分布形式的牵引网阻抗和导纳的计算。运用埋地裸导线法对综合地线进行建模,弥补等效接地电阻法不能计算导线电流的缺点,且计及综合地线与其他导线间的耦合,研究不同回流导线中的电流分布比例,并与实测数据进行对比,验证埋地裸导线建模法及牵引网链式网络潮流算法的准确性,并探讨回流测试方案。
The distribution of high speed railway traction return current is complex. It is necessary to carry out its accurate analysis of the model. Based on the parallel multi-conductor transmission line theory, this paper sets up a unified mathematical model of the traction network and realizes the impedance calculation for different forms of traction network. With the method of buried bare wires, the modeling of integrated grounding wire makes up for the shortcomings of grounding resistance equivalent method which cannot calculate wire current, and takes the coupling between the integrated grounding wire and the other wire into account. The distribution proportion of current in different return wires is figured out and compared with the measured return current ratio. In this way, the accuracy of the buried bare wires method and the chain network flow algorithm are verified. The return current test schemes are explored.
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2018年第1期31-38,共8页
Journal of Railway Science and Engineering
基金
中国铁路总公司科技研究开发计划资助项目(2014J009-B)
关键词
综合地线
牵引网
回流系统
链式网络模型
integrated grounding wire
traction network
return current system
chain network model
