雷击交流输电线路对埋地管道干扰规律及安全距离研究  

Research on Interference Law of Lightning Strikes on AC Transmission Lines to Buried Pipelines and Safe Distance Between Them

作　　者：朱文卫 许成昊 郭金根 梁爱武 倪圣博 刘建国[2] 崔淦[2] ZHU Wenwei;XU Chenghao;GUO Jingen;LIANG Aiwu;NI Shengbo;LIU Jianguo;CUI Gan(Guangdong Power Grid Co.,Ltd.,Guangzhou,Guangdong 510000,China;College of Pipeline and Civil Engineering,China University of Petroleum(East China),Qingdao,Shandong 266580,China)

机构地区：[1]广东电网有限责任公司,广东广州510000 [2]中国石油大学(华东)储运与建筑工程学院,山东青岛266580

出　　处：《西安石油大学学报(自然科学版)》2025年第2期116-123,共8页Journal of Xi’an Shiyou University(Natural Science Edition)

基　　金：广东电网科技项目“交流输电线路对油气管道的影响及其规律、标准化防护方案及效果评价研究”(GDKJXM20220860)。

摘　　要：针对交流输电线路遭受雷击灾害时,高额的雷电流通过塔杆接地装置流入土壤,对临近埋地管道产生严重的交流干扰问题,利用仿真软件,定量化研究了不同因素的干扰规律,并以3PE涂层的耐压限值109 kV作为评判的依据,进一步计算两者的安全距离。研究结果表明:距离雷击点1500 m之外的管道受雷击影响不大;涂层干扰电压的最大值与雷电流幅值之间存在线性关系;土壤电阻率小于500Ω·m时,干扰电压随电阻率变化明显;防腐层电阻率在1~10 kΩ·m^(2)内变化时,干扰电压增幅较大;增大并行间距,干扰电压显著减小;输电线路电压等级升高,安全距离略有增大。现有规范中对于管道与高压交流输电线接地体之间距离的规定是最小距离,当土壤电阻率比较高时,应对安全距离作进一步评估。When AC transmission lines are struck by lightning,high lightning current flows into the soil through tower grounding devices,causing serious AC interference to nearby buried pipelines.The interference laws of different factors are quantitatively studied using simulation software,and the safe distance between AC transmission lines and buried pipelines is calculated based on the withstand voltage limit of 3PE at 109 kV as the evaluation basis.The research results indicate that buried pipelines located 1500 m away from the lightning strike point are not significantly affected by lightning strikes;There is a linear relationship between the maximum value of coating interference voltage and the amplitude of lightning current;When the soil resistivity is less than 500Ω·m,the interference voltage changes significantly with the resistivity;When the resistivity of the anti-corrosion layer varies within 1~10 kΩ·m^(2),there is a significant increase in interference voltage;Increasing the parallel spacing significantly reduces the interference voltage;The voltage level of the transmission line is increased,and the safety distance is slightly increased.The current regulations stipulate the minimum distance between pipelines and the grounding body of high-voltage AC transmission lines.When the soil resistivity is relatively high,further evaluation of the safety distance between them should be conducted.

关 键 词：管道雷击干扰 防腐层电压 耐压限值 埋地管道安全 

分 类 号：TE980.5[石油与天然气工程—石油机械设备]