摘要
为研究输油管道与不同电压等级交流输电线路并行时,稳定的负载电流对管道产生的腐蚀影响,利用输电线路导线类型、输电线路稳态运行电流、管道参数等管道沿线的输电线路及管道相关参数建立CDEGS模型,对输油管道在不同的电压等级、并行距离、土壤电阻率、并行间距及管径下受到的交流干扰的腐蚀进行模拟计算,结果表明:管道所受交流干扰随着干扰源电压等级、并行距离和土壤电阻率的增大而增大,随着并行间距和管径的增大而降低。为了更直观地分析交流干扰下管道的交流腐蚀情况,对管道交流腐蚀风险及腐蚀速率进行了预测和评估,并使用腐蚀减薄厚度表征腐蚀严重程度。以上得到的高压输电线路对管道的影响规律,可为合理进行长输管道选线及防腐设计提供参考。
In order to identify the corrosion effects of the steady load current on the pipeline when oil pipeline and AC power lines of different voltage levels are laid in parallel, CDEGS model is established considering the types of power lines, steady-state operating current of power line, and other parameters of the power line and pipeline. It is used to simulate and calculate the AC interference-induced corrosion on the oil pipeline depending on voltage level, parallel length, soil resistivity, parallel spacing and pipeline diameter. The results show that the AC interference suffered by the pipeline increases with the increase of voltage level, parallel length and soil resistivity of the interference source, while it decreases with the increase of parallel spacing and diameter. In order to visually analyze the corrosion on pipeline under AC interference, the AC corrosion risk and corrosion rate are predicted and assessed, and corrosion thickness reduction is used to represent the severity of corrosion. The obtained pattern that high voltage power lines affect the pipeline can provide a reference for reasonable route selection and corrosion prevention design of long-distance pipeline.
出处
《油气储运》
CAS
北大核心
2015年第11期1208-1213,共6页
Oil & Gas Storage and Transportation
关键词
交流干扰
腐蚀
并行间距
并行距离
AC interference, corrosion, parallel spacing, parallel length
