摘要
架空线路杂散电流在埋地金属管道上产生电磁干扰,会加速其腐蚀及正常运行。针对正常运行情况下500 kV输电线路与埋地油气金属管道交叉跨越运行工况,通过仿真计算对比分析了管道交叉跨越长度、交叉夹角、土壤电阻率、土壤结构、导线平均高度、导线负荷电流、管道防腐涂层及接地装置等因素对埋地金属管道电磁干扰的影响。研究结果表明:沿埋地金属管道的感应电压、涂层电压及电流密度呈“W”型变化规律;线路-管道交叉跨越长度及其夹角θ、导线负荷电流及管道涂层电阻率影响埋地金属管道电磁干扰,土壤电阻率、土壤结构、导线平均高度及接地装置基本不影响埋地金属管道电磁干扰。本研究结论为输电线路-油气管道交叉跨越施工提供参考。
Stray current from overhead lines will cause electromagnetic interference in buried metal pipes,which will accelerate corrosion and normal operation of buried metal pipes.In this paper,the authors focused on the practical case which there are 500 kV transmission line crossing over buried metal oil and gas pipeline under normal operation condition.Simulation method have been used to compare and analyze the effect of the length of pipeline crossing,the angle of crossing,the soil resistivity,the soil structure,the average height of the conductor,the load current of the conductor,the pipeline anticorrosive coating and the grounding device on the electromagnetic interference of buried metal pipeline.The results show that the induced voltage,coating voltage and current density along the buried metal pipeline change in a"W"pattern;the length of the line-pipeline crossing,the angle of the pipe-circuit,the load current of the wire and the resistivity of the pipeline coating affect the electromagnetic interference of buried metal pipes,while the soil resistivity,soil structure,average height of the wire and the grounding device basically do not affect the electromagnetic interference of buried metal pipes.The conclusion of this paper can provide reference for the construction when transmission lines-oil and gas pipelines are crossing.
作者
高晓东
安韵竹
毕斌
韩正新
咸日常
吕守国
GAO Xiaodong;AN Yunzhu;BI Bin;HAN Zhengxin;XIAN Richang;LV Shouguo(Maintenance Company,Shandong Electric Power Corporation,Jin′an 250118,China;Electrical and Electronic Engineering College,Shandong University of Technology,Zibo 255049,China)
出处
《山东理工大学学报（自然科学版）》
CAS
2020年第5期17-22,共6页
Journal of Shandong University of Technology:Natural Science Edition
基金
山东省自然科学基金项目(ZR2016EEQ20)
山东省高等学校科技计划项目(J16LN32)。
关键词
输电线路
埋地金属管道
感应电压
涂层电压
电流密度
transmission lines
buried metal piping
induced voltage
coating voltage
current density
