交流输电线路对埋地管道的耦合干扰规律数值模拟研究  

Study on the Numerical Simulation of Coupling Interference Law of AC Transmission Lines to Buried Pipelines

作　　者：赵雅蕾 陈炜 程伟 蓝卫 吴祥 马立明[4] ZHAO Yalei;CHEN Wei;CHENG Wei;LAN Wei;WU Xiang;MA Liming(Hefei General Machinery Research Institute Co.,Ltd.,Hefei 230031,China;SINOMACH Special Equipment Inspection Co.,Ltd.,Hefei 230031,China;Branch of Science and Technology Research Institute of Pipe China Co.,Ltd.,Tianjin 300457,China;Ningxia Petrochemical Branch of PetroChina Corporation,Yinchuan 750026,China)

机构地区：[1]合肥通用机械研究院有限公司,安徽合肥230031 [2]国机特种设备检验有限公司,安徽合肥230031 [3]国家石油天然气管网集团有限公司科学技术研究总院分公司,天津300457 [4]中国石油天然气股份有限公司宁夏石化分公司,宁夏银川750026

出　　处：《材料保护》2025年第1期116-124,共9页Materials Protection

基　　金：安徽省科技重大专项“城市燃气管道基于风险的智能化监测与预警技术研究”(202203a07020001)。

摘　　要：在能源公共走廊内,交流输电线路与埋地管道路由选择的相似性使得管道不可避免地进入交流干扰影响区,导致管道交流腐蚀、阴极保护系统异常,威胁管道运行安全。为研究交流输电线路对埋地管道的耦合干扰规律,依据管道等效电路及电磁感应理论,采用CDEGS软件建立输电线路对埋地管道交流干扰模型,计算典型输电线路特性参数、管道参数、敷设环境参数下的交流干扰强度及安全距离。结果表明:管道交流干扰电压与交流输电电流成正比;当3PE管道与输电线路并行长度小于20 km时,交流干扰电压与并行长度成正比;当管道与输电线路距离较近时,相间距和平均高度对交流干扰电压影响较大;随着间距增大,交流干扰电压先增大后减小;基于大量数值模拟提出适用于现场工程的安全距离判定图与交流干扰电压曲线,为新建管道路由选择及已建管道干扰防护提供参考依据,降低管道交流干扰风险。In energy public corridors,the similar routing of AC transmission lines and buried pipelines inevitably causes the pipeline to enter the AC interference zone,leading to pipeline AC corrosion,abnormal cathodic protection systems,and posing a threat to pipeline operation safety.To study the coupling interference law of AC transmission lines on buried pipelines,based on the pipeline equivalent circuit and electro⁃magnetic induction theory,a model of AC interference of transmission lines on buried pipelines was established using CDEGS.The AC interfer⁃ence intensity and safety distance under typical transmission line characteristic parameters,pipeline parameters and laying environment parame⁃ters were calculated.Results showed that the AC interference voltage on the pipeline was directly proportional to the AC transmission current.When the parallel length between the 3PE pipeline and the transmission line was less than 20 km,the AC interference voltage was directly pro⁃117 portional to the parallel length.When the distance between the pipelines and transmission lines was small,the phase spacing and average height significantly impacted the AC interference voltage.As the distance increased,the AC interference voltage initially increased and then de⁃creased.Based on extensive numerical simulations,a safety distance determination chart and AC interference voltage curve suitable for on⁃site engineering were proposed,providing a reference for selecting new pipeline routing and protecting existing pipelines from interference,thereby reducing the risk of AC interference on pipelines.

关 键 词：输电线路 埋地管道 交流干扰 干扰电压 安全距离 

分 类 号：TE973[石油与天然气工程—石油机械设备]