摘要
简述了轨道交通杂散电流产生的基本原理,按照国标规定的测试方法,对上海地区平行于轨道交通的某埋地燃气管道进行了管地电位、管中电流、土壤电位梯度测试,结果显示该处燃气管道的管地电位正偏超过200mV,管中电流波动100mA,土壤电位梯度62mV/m,且测试数据的波动与轨交运行具有时间上的同步性,可确认燃气管道受到来自于轨道交通杂散电流的干扰。在实验分析的基础上讨论了相关的防护措施。
The generation of stray current from rail transit system was summarized.According to stray current testing methods prescribed in national standards,measurement on pipe-to-soil potential,current within buried gas pipeline,and potential gradient of soil were made to certain underground gas pipeline located in the neighboring area and parallel to the rail transit in Shanghai. Result shows that pipe-to-soil potential fluctuation of the tested gas pipeline,current within pipeline and potential gradient of soil were 200 mV,100 mA,and 62 mV/m respectively.Fluctuations of measured data were synchronous with operation of rail transit in time.This showed gas pipeline was interfered by stray current from rail transit.Based on experimental analysis,some related protective measures were discussed.
出处
《城市公用事业》
2012年第3期44-48,68,共5页
Public Utilities
