轨道交通杂散电流防护关键技术工程验证
靳守杰1,2马坚生3欧阳开3刘禺贝4赵云云4林晓鸿4
Engineering Verification of Key Technologies for Rail Transit Stray Current Protection
JIN Shoujie1,2MA Jiansheng3OUYANG Kai3LIU Yubei4ZHAO Yunyun4LIN Xiaohong4
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作者信息:1.深圳市市政设计研究院有限公司， 518029， 深圳
2.西南交通大学电气工程学院， 611756， 成都
3.广州地铁集团有限公司， 510006， 广州
4.广州地铁设计研究院股份有限公司， 510030， 广州
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Affiliation:1.Shenzhen Municipal Design & Research Institute Co., Ltd.， 518029， Shenzhen， China
2.School of Electrical Engineering, Southwest Jiaotong University， 611756， Chengdu， China
3.Guangzhou Metro Group Co., Ltd.， 510006， Guangzhou， China
4.Guangzhou Metro Design & Research Institute Co., Ltd.， 510030， Guangzhou， China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2025.05.040
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中图分类号/CLCN:U223.6
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栏目/Col:供电与能源
摘要:
［目的］为解决地铁线路杂散电流腐蚀问题，需对城市轨道交通杂散电流防护关键技术进行工程验证。［方法］介绍了高绝缘性混凝土；设计了一种新型全绝缘轨道扣件，并采用静态和动态测试方法，对轨道钢轨对地的绝缘性能进行验证。静态测试包括测量钢轨对地电阻等参数；动态测试模拟地铁运营工况，检测钢轨对地过渡电阻在实际地铁运营中的变化情况。［结果及结论］新型全绝缘轨道扣件能够通过设置全包式屋檐结构轨下垫板、绝缘轨距块外延等方法，增大爬电距离，提升轨道扣件的表面电阻。高绝缘性混凝土及全绝缘轨道扣件均能有效提升钢轨对地过渡电阻，相较于传统轨道安装方案，整体绝缘扣件+硅基纳米绝缘包裹方案对钢轨对地过渡电阻的提升效果最为显著。新型绝缘材料和扣件系统在不同工况下均能保持良好的绝缘性能，能够有效减少杂散电流的泄漏。
Abstracts:
［Objective］In order to solve the problem of stray current corrosion on metro lines, it is necessary to conduct engineering verification of the key technologies for stray current protection in urban rail transit.［Method］The high-insulation concrete is introduced. A new type of fully insulated rail fastener is designed, and static and dynamic test methods are used to verify the insulation performance of the track steel rail against the ground. The static test includes measuring the rail-to-ground resistance parameters, and the dynamic test simulates the metro operating conditions to detect the changes of rail-to-ground transition resistance during the actual metro operation.［Result & Conclusion］By setting a fully enclosed eaves structure rail pad and extending insulated gauge blocks, and other methods, the new type of fully insulated rail fastener can increase the creepage distance and improve the surface resistance of the rail fastener. Both the high-insulation concrete and the fully insulated rail fastener can effectively improve the rail-to-ground transition resistance. Compared with the traditional track installation schemes, the overall insulated fastener plus silicon-based nano-insulation wrapping scheme exhibits the most significant effect on improving the rail-to-ground transition resistance. The new type of insulating materials and the fastener system can maintain good insulation performance under different working conditions, and effectively reduce the leakage of track stray current.
- 上一篇: 城市轨道交通轨排过渡电阻新型测量方法
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