以哈尔滨—大连电气化铁路和东北输油管网为研究对象,通过实际测试分析,阐述了电气化铁路对临近输油管道产生交流干扰的基本规律,提出以钳位式排流为主的方法对东北输油管网进行综合防护,并对排流效果进行了客观分析,总的结果表明,排流装置发挥了应有的作用。另外,在交流干扰排流效果传统评价指标——持续干扰指标的基础上,提出了间歇干扰补充评价指标——干扰频率的概念。 Taking Harbin-Dalian Electrified Railway and Northeast Pipeline as the research object, the basic rules of AC interference to the adjacent oil pipelines by the electrified railway are expounded through practical testing and analysis. Comprehensive protection, and the discharge effect of an objective analysis of the overall results show that the drainage device has played its due role. In addition, on the basis of the traditional evaluation index of AC interference drainage effect - continuous disturbance index, the concept of supplementary evaluation indicator of intermittent interference - interference frequency is proposed.