弓网异常磨耗分析及解决方案
邱伟明贺佳琦李懋陈忠明
Analysis and Solutions for Pantograph-Catenary Abnormal Wears
QIU WeimingHE JiaqiLI MaoCHEN Zhongming
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作者信息:广州地铁集团有限公司，511430，广州
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Affiliation:Guangzhou Metro Group Co., Ltd., 511430 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.2025.03.051
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中图分类号/CLCN:U231.94∶TM922.6
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栏目/Col:应用技术
摘要:
［目的］弓网异常磨耗在严重情况下，可能导致接触线断裂并引发网络塌陷，直接造成供电中断，进而可能诱发交通事故。因此，有必要对其进行分析并研究解决方案。［方法］基于对广州地铁3号线的深入分析，结合隧道温湿度监测、碳滑板与接触线表面状态检查、检修频次加密、接触网热滑频次提升及专项打磨作业等手段，系统探究了冬季大幅度降温干燥时段对弓网磨耗的影响，并提出了相应的特殊维护策略。［结果及结论］针对弓网异常磨耗这一复杂现象，广州地铁通过深入分析发现，降温、湿度以及接触面廓形匹配是其关键影响因素。所采取的优化措施显著改善了弓网关系，为全国多个城市面临的刚性接触网弓网异常磨耗问题提供了有效的解决方案，并取得了显著的成效。
Abstracts:
［Objective］ Severe abnormal wear of PC (pantograph-catenary) systems can lead to the breakage of contact wires and the collapse of the overhead network, directly causing power supply interruptions and potentially triggering traffic accidents. Therefore, it is essential to analyze this issue and develop effective solutions. ［Method］ Based on a thorough analysis of Guangzhou Metro Line 3,various measures are adopted, including monitoring tunnel temperature and humidity, inspecting the surface conditions of carbon strips and contact wires, increasing maintenance frequency, enhancing thermal sliding operations, and conducting specialized grinding work. The impact of significant temperature drops and dry conditions during winter on PC wear is explored and corresponding special maintenance strategies are proposed. ［Result & Conclusion］ Targeting the complicated phenomenon of PC abnormal wear, Guangzhou Metro identifies temperature drops, humidity, and surface profile matching of contact components as key factors influencing abnormal wear through in-depth analysis. The implemented optimization measures significantly improve the PC interaction, and provide an effective approach to addressing abnormal wear in rigid catenary systems encountered by many Chinese cities, achieving remarkable results.
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