电瓷避雷器Issue(1)：10-20,27,12.DOI:10.16188/j.isa.1003-8337.2026.01.002
超高压交流输电线路对埋地油气管道电磁干扰分析及防护措施
Electromagnetic Interference from EHV AC Transmission Lines on Buried Oil and Gas Pipelines and Protective Measures
摘要
Abstract
The author assessed the electromagnetic interference caused by 500 kV EHV AC transmission lines on nearby buried oil and gas pipelines.A cross-parallel model of the transmission lines and the Guangdong Natural Gas Pipeline Phase Ⅰ project was created using CDEGS software,followed by steady-state and transient interference simulations.By collecting pipeline parameters,transmission line parame-ters,and environmental data,combined with domestic and international standards,a safety assessment method for pipeline AC interference was proposed.The results indicate that during steady-state opera-tion,the maximum interference voltage on the pipeline reached 69.27 V,accompanied by an AC current density of 260.45 A/m2,both of which surpass safety limits.Under fault conditions,the peak contact voltage on the pipeline reached 2 628.75 V,and the coating voltage peaked at 2 628.57 V,posing risks to personnel safety.To address the excessive interference,a mitigation scheme involving the laying of 6 200 m zinc strips combined with solid-state decouplers was proposed,reducing the interference voltage to 7.18 V and the current density to 26.11 A/m2,meeting standard requirements.Technical references are included regarding the planning and protection of parallel projects that include UHV transmission lines,as well as the use of oil and gas pipelines.关键词
500kV超高压/埋地油气管道/电磁干扰/CDEGS/交流电流密度/防护措施Key words
500 kV EHV/buried oil and gas pipelines/electromagnetic interference/CDEGS/AC cur-rent density/mitigation measures引用本文复制引用
张东阳,郭天伟,王仕龙,徐邦恩..超高压交流输电线路对埋地油气管道电磁干扰分析及防护措施[J].电瓷避雷器,2026,(1):10-20,27,12.基金项目
国网江西省电力有限公司科技项目资助(编号:5218D0240009).Project supported by State Grid Jiangxi Electric Power Co.,Ltd.Technology Project(No.5218D0240009). （编号:5218D0240009）
