摘要
随着生产对能源和电力需求的提升,输电、油气走廊遍布各地。当输电线路与管道并列运行时,由于电磁场的存在管道会产生纵向感应电动势。该电压较大时不仅影响管道的使用寿命,甚至威胁到工作人员的生命安全。为了研究高压架空线路对埋地金属管道电磁干扰的特性,本文建立了架空线路和油气管道的电磁耦合仿真模型,讨论了不同电压等级、并行间距和并行长度下管道上感应电压和纵向电流的分布特点。结果表明,架空线路对金属管道的电磁干扰随并行间距的增加先增大后减小,最终趋于稳定;随着并行长度的增加,架空线路对金属管道的电磁干扰呈现先迅速增大再略有减小,最终趋于稳定的趋势。
As production increases in energy and electricity demand,transmission lines and oil and gas corridors are being built all over the country.When the transmission line and the pipeline run side by side,the pipeline will generate longitudinal induced electromotive force due to the presence of electromagnetic field.When the voltage is large,it not only affects the service life of the pipeline,but also threatens the safety of the workers.In order to investigate the influence law of high voltage overhead transmission lines on the electromagnetic interference of pipelines,the electromagnetic simulation model of transmission lines and oil and gas pipelines is established,which is used by CDEGS software in this thesis.The distribution characteristics of induced voltage and longitudinal current under different voltage levels,parallel spacing and parallel length are discussed.The results show that the electromagnetic interference of overhead lines on metal pipes increases first and then decreases with the increase of parallel spacing,and finally tends to be stable.With the increase of the parallel length,the electromagnetic interference of overhead lines on metal pipes increases rapidly and then decreases slightly,and finally tends to be stable.
作者
吕智
LV Zhi(Sinopec Jianghan Petroleum Engineering Design Co.,Ltd,Wuhan 430000,China)
出处
《通信电源技术》
2020年第6期103-105,共3页
Telecom Power Technology
关键词
架空线路
金属管道
电磁干扰
感应电压
overhead line
metallic conduit
electromagnetic interference
induced voltage
