埋地钢质管道交流杂散电流干扰研究现状

Research Status on AC Stray-Current Interference of Buried Steel Pipeline

随着我国能源、配电输送及电气化轨道交通系统的快速发展,埋地钢质管道因交叉并行、敷设距离过近而带来的杂散电流干扰问题引发安全监管部门与企业的关注。以交流杂散电流为对象,总结了埋地钢质管道在交流杂散电流干扰下的腐蚀机理,归纳分析了不同因素影响下的腐蚀行为特性;以不同干扰机理为准则,总结了现有交流杂散电流干扰的评价标准,提出了现有评价标准的问题及建议;分析了现有杂散电流检测及防护技术方法及装备,研究了各自的优势及局限性,给出了未来研究的重点及方向。

With the rapid development of the energy,power distribution transmission and electrified rail transit systems of our country,the stray-current interference problem caused by the crossing and paralleling of buried steel pipelines and by the close laying distance has caught the attention of safety supervision departments and enterprises.Taking AC stray current as the object,the corrosion mechanism of buried steel pipelines under the interference of AC stray current was summarized and the characteristics of corrosion behavior under the influence of different factors was summarized.In addition,based on the different interference mechanisms,the current evaluation standards for the AC stray current interference was analysed,the problems of these standards were put forward and corresponding suggestions were proposed.In addition,the current technology and equipment for detecting and protecting against the stray current were analyzed and their advantages and limitations were studied.Finally,the focus and direction of the future research were pointed out.