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| Analysis of Unbalanced Coefficient of High-speed Railway Traction Return Current |
| MA Jiu-yang |
| （Signal ＆ Communication Research Institute, China Academy of Railway Sciences, Beijing 100081, China） |
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Abstract Abstract：Research purposes： In the process of high-speed railway joint test and dynamic detection, the lack of testing methods and limit requirements for traction return index impacts on high-speed rail construction quality and dynamic acceptance. According to the current detection standards in the reflow index detection missing, this paper proposed the imbalance index assessment parameters of high-speed railway traction return current and established grading criteria, to provide the basis for rectification, dynamic detection and dynamic acceptance of high-speed railway integrated grounding system engineering. Research conclusions： (1) The unbalanced coefficient of the ground return line of the railway is used as the analysis index of the imbalance of the traction return current. After the difference test, it is necessary to establish a set of quality criterion passing the unbalanced coefficient of ground lines, without differentiating line types. (2) The range of the backflow unbalanced coefficient of the upstream and downstream ground return is divided into β≤0.43 and 0.43<β≤0.70 which is regarded as the interval of good and qualified engineering respectively, and the value beyond the above interval is judged to be poor level. (3) The research results can be applied to the integrated grounding dynamic detection of new high-speed railway engineering joint test and dynamic detection, and can be referred for new railway projects using integrated grounding system.
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Received: 19 July 2017
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2017, Vol. 34 
