基于CDEGS的客运专线贯通地线与所亭连接方式分析

Analysis for Connection Mode Between The Integrated Grounding Line and The Traction Pavilion Ground Network

客运专线贯通地线与牵引所亭地网间的连接部分易成为工程中薄弱环节。部分工程中客运专线贯通地线与牵引所亭地网间连接方式将导致贯通地线上回流电流比例不正常增大。根据现场实测数据,分析工程中出现薄弱环节的原因;利用CDEGS软件建立可模拟现场多种现象的仿真模型,并对回流路径上的各项电流进行了仿真计算;根据计算,并结合分析了工程实际,提出了解决客运专线贯通地线增大问题的改进建议。

The connecting part between the integrated grounding line（LGL） and the Traction Pavilion ground network is easy to be the weak link in the project. In some projects, the connection mode between the LGL and grounding grid in transformer substation will result in an abnormal increase of the reflux current on the LGJ. In this paper, the reason of the weak link in the project is analyzed based on the field measured data. Based on CDEGS software, a simulation model can be used to simulate various phenomena of the simulated scene, and the current of the reflux path is simulated. According to the calculation and combining with the engineering practice, the paper puts forward some suggestions to solve the problem of the abnormal increase of the LGL.