摘要
高铁与管道交叉并行时,其供电系统会对管道产生交流干扰,造成管道腐蚀甚至击穿防腐蚀层。由于列车处于持续运动的状态,管道上的交流干扰是不断变化的,这给干扰缓解的设计带来了困难。采用数值模拟的方法研究了高速列车位置对管道的影响。结果表明:(1)管道上的交流干扰主要由铁轨内的电流产生,由于大量电流从铁轨泄漏到大地,产生“电流不平衡”。(2)列车从TPSS至AT2的运行过程中,交流电压峰值出现在各AT段的起点、终点和中间。(3)由于交叉点的存在,以及CW,AF,轨道之间的“位置不平衡”,交流电压峰值也会出现在交叉点处。(4)管道上的交流干扰随铁轨泄漏电阻增大而减小,这是因为随着铁轨泄漏电阻增大,铁轨泄漏到大地的电流减少。对北京地区一条实际输气管道进行了现场测试。结果表明,现场实测的管道交流电压与计算值基本吻合。
When high-speed rail intersects with pipelines in parallel,its power supply system will cause AC interference to the pipelines,leading to pipeline corrosion and even breakdown of the anti-corrosion layer.Due to the continuous movement of the train,the AC interference on the pipeline is constantly changing,which poses difficulties for the design of interference mitigation.The influence of high-speed train position on pipelines was studied using numerical simulation methods.The results show that:(1)The AC interference on the pipeline is mainly generated by the current inside the rail,and due to a large amount of current leaking from the rail to the ground,a"current imbalance"occursed.(2)During the operation of the train from TPSS to AT2,the peak AC voltage occurred at the starting,ending,and middle points of each AT section.(3)Due to the presence of intersections and the"positional imbalance"between CW,AF,and tracks,peak AC voltage could also occur at intersections.(4)The AC interference on the pipeline decreased as the rail leakage resistance increased,because as the rail leakage resistance increased,the current leaked from the rail to the ground decreased.(5)On site testing was conducted on an actual gas pipeline in the Beijing area.The measured AC voltage of the pipeline on site was basically consistent with the calculated value.
作者
郭艳伟
文陈鼎
鲍俊涛
陈玉宝
杨树斌
姜子涛
GUO Yanwei;WEN Chending;BAO Juntao;CHEN Yubao;YANG Shubin;JIANG Zitao(Guangdong Institute of Special Equipment Inspection and Research,Foshan 528000,China;Foshan Natural Gas High Pressure Pipe Network Co.,Ltd.,Foshan 528000,China;National Engineering Laboratory for Pipeline Safety/MOE Key Laboratory of Petroleum Engineering/Beijing Key Laboratory of Urban Oil and Gas Distribution Technology,China University of Petroleum-Beijing,Beijing 100249,China)
出处
《腐蚀与防护》
CAS
CSCD
北大核心
2024年第10期130-140,共11页
Corrosion & Protection
基金
广东省市场监督管理局科技项目(2023ZT02)。
关键词
高铁
交流干扰
数值模拟
管道
high-speed train
AC interference
numerical simulation
pipeline
作者简介
通信作者:郭艳伟(1987-),高级工程师,硕士,主要从事埋地管道检验检测与适用性评价、油气管道杂散电流干扰预测及防护研究工作,13378686056,xitu081@126.com。
