通过调整刚性接触网正弦波拉出值改善运营线路中弓网异常磨耗的应用实践
李杰王晓博
Application Practice of Adjusting Rigid Catenary Sinusoidal Wave Stagger Value to Ameliorate Abnormal Pantograph-catenary Wear in Operating Line
LI JieWANG Xiaobo
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作者信息:西安市轨道交通集团有限公司， 710016， 西安
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Affiliation:Xi’an Rail Transit Group Co., Ltd., 710016, Xi’an, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.04.024
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中图分类号/CLCN:U239.5：U225.6
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栏目/Col:研究报告
摘要:
［目的］我国早期设计的城市轨道交通线路的刚性接触网以正弦波布置方式为主，运营中普遍存在弓网异常磨耗情况。已运营线路受正线轨行区施工条件限制，无法进行大范围施工改造，致使此问题长期得不到解决，需要研究其优化调整措施。［方法］通过计算正弦波拉出值布置方式下受电弓表面各计算段工作时与接触网的滑动摩擦距离，并对各计算段的滑动摩擦距离占比进行了统计分析，找出致使受电弓异常磨耗的3个原因。结合运营线路定位点的布置情况，调整拉出值数据，依次对这3个原因提出了优化措施。对比了优化前后的正弦波拉出值，并对优化调整措施的效果进行分析。［结果及结论］与原有正弦波布置方式的拉出值相比，优化后布置方式的拉出值中，受电弓磨耗最大倍数由6.23倍下降至1.47倍，受电弓磨耗平均值倍数由3.52倍下降至1.08倍。在西安地铁2号线部分区段实施了该优化措施后，2年内弓网无明显异常磨耗，受流质量良好。
Abstracts:
［Objective］ The early-designed rigid catenary system for urban rail transit lines in China adopts a sinusoidal wave arrangement method, leading to a prevalent abnormal wear of PC (pantograph-catenary) during operation. Under the constraints of main-line track zone construction conditions, the operating lines are not susceptible to large-scale renovations, prolonging the resolution of this issue, a research on the optimization and adjustment measures is needed. ［Method］ By calculating the sliding friction distance between each pantograph surface calculation section and catenary under the arrangement method of sinusoidal wave stagger value, a statistical analysis of the percentage of sliding friction distance for each calculation section is performed. Three reasons causing pantograph abnormal wear are identified. Considering the layout of positioning points on operating lines, the stagger value data is adjusted, and optimization measures are proposed for these three reasons in sequence. A comparison of sinusoidal wave stagger values before and after optimization is conducted, followed by an analysis of the effectiveness of the optimization and adjustment measures. ［Result & Conclusion］ In comparison with the stagger value of original sinusoidal wave arrangement method, the maximum multiple of pantograph wear decreased from 6.23 times to 1.47 times in the stagger value of optimized arrangement method, and the average multiple of pantograph wear reduced from 3.52 times to 1.08 times. After implementing these optimization measures in some sections of Xi’an Metro Line 2, no noticeable pantograph abnormal wear is observed within two years, and the current collection quality remains excellent.
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