应用同步监测法定位管道杂散电流的干扰源  

Applying synchronous monitoring method to locate interference sources of stray current in pipeline

作　　者：滕延平[1] 蔡培培[1] 徐承伟[1] 何飞 李增彬 张明霞 

机构地区：[1]中国石油管道科技研究中心,河北廊坊065000 [2]中国石油管道公司济南输油分公司,山东济南250014

出　　处：《油气储运》2011年第5期347-349,31+315,共3页Oil & Gas Storage and Transportation

摘　　要：针对管道受动态杂散电流干扰,管地交直流电压波动较大,而通过传统测试桩测量管道交流或者直流电压,难于精确定位干扰源的问题,提出了使用同步监测法,即在同一时间内,使用存储式杂散电流测试仪,对不同的测试桩电压数据进行同步监测,并根据绘制的电压-时间变化曲线,综合比较同一时间内电压的瞬间值与平均值,精确定位干扰源。干扰源的精确定位可为排流位置的确定提供依据。介绍了使用同步监测方法成功定位大港-枣庄成品油管道交流干扰源与秦京输油管道直流干扰源的实例,同时指出了同步监测法应用过程中的注意事项。AC/DC voltages of pipe/soil greatly fluctuate when dynamic stray current interferes on pipeline.And it will be difficult to accurately locate the interference sources if conventional test station is used to measure the AC/DC voltages on pipeline.Synchronous monitoring method is presented.Memory stray current meter is used to measure the voltage values from different test stations at the same time,and the changing curve of voltage corresponding to time is set up.Based on the curve,comprehensive comparison on the instantaneous and mean voltage values at the same time is carried out so as to locate the interference sources.Accurate location on the interference sources can provide a fundamental to determine the current drainage position.Application cases in Dagang-Zhaozhuang Refined Pipeline for AC interference sources and Qinhuangdao-Beijing Crude Oil Pipeline for DC interference sources are given,and points for attention in the method application are presented.

关 键 词：管道 杂散电流 干扰源 同步监测 

分 类 号：TE832[石油与天然气工程—油气储运工程]