油气管道交直流混合干扰的监测及分析

李强林, 钱文振, 闫茂成, 徐 姗, 李春奇, 高博文

doi:10.16577/j.issn.1001-1560.2023.0178

材料保护 >

2023 , Vol. 56 >Issue 7: 181 - 187

DOI: https://doi.org/10.16577/j.issn.1001-1560.2023.0178

实用技术

油气管道交直流混合干扰的监测及分析

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1.山东省天然气管道有限责任公司，山东济南 250000；2.中国科学院金属研究所，辽宁沈阳 110016；3.国家管网集团北方管道有限责任公司济南输油气分公司，山东济南 250101

闫茂成(1976-)，副研究员，博士，主要从事油气管道腐蚀及控制技术研究工作，电话:13654979708，E-mail: yanmc＠imr.ac.cn

收稿日期: 2023-01-18

修回日期: 2023-02-17

录用日期: 2023-03-14

网络出版日期: 2023-08-24

基金资助

国家自然科学基金项目(52071320)资助

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Monitoring and Analysis of AC/DC Mixed Interference on Oil/Gas Pipeline

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1.Shandong Natural Gas Pipeline Co.，Ltd.，Jinan 250000，China；2.Institute of Metal Research，Chinese Academy of Sciences，Shenyang 110016，China；3.Jinan Oil Gas Branch of National Petroleum and Natural Gas Pipeline Group Co.，Ltd.，Jinan 250101，China

Received date: 2023-01-18

Revised date: 2023-02-17

Accepted date: 2023-03-14

Online published: 2023-08-24

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摘要

某原油管道与地铁、高铁和高压输电线路等多种干扰源相邻或伴行，受杂散电流干扰严重且复杂。采用现场埋片法对管道沿线管地电位和干扰规律进行详细监测，并分析干扰特征。结果表明:管道全线受地铁、高铁及高压交流输电线路等多种干扰源交直流混合干扰；45～56 号桩管段受高压交流输电线路和高铁线路的静态和动态交流干扰，56～105 号和129～152 号桩管段受地铁线路和高铁线路的动态直流和动态交流混合干扰，105～129 号桩管段同时受地铁线路、高铁线路和高压交流输电线路混合干扰。交直流混合干扰下，管道通电电位最高达2.00 V，断电电位0.31 V；交流电压最高26 V，7 处交流电流密度高于30 A/m2，需采取干扰防护措施。

关键词： 埋地管道; 杂散电流; 地铁干扰; 阴极保护; 动态干扰

本文引用格式

李强林, 钱文振, 闫茂成, 徐姗, 李春奇, 高博文 . 油气管道交直流混合干扰的监测及分析[J]. 材料保护, 2023 , 56(7) : 181 -187 . DOI: 10.16577/j.issn.1001-1560.2023.0178

Abstract

A crude oil pipeline is adjacent to or accompanied by various interference sources such as metros，high-speed railways and highvoltage transmission lines，and is subject to severe and complex stray current interference.The on-site embedding piece method was used to monitor the pipeline to ground potential along the pipeline and interference law in detail，and analyze the interference characteristics.Results showed that the entire pipeline was subject to AC/DC mixed interference from various interference sources such as metros，high-speed railways and high-voltage AC transmission lines (HVAC).The 45～56 pile pipe section was subject to static and dynamic AC interference from highvoltage AC transmission lines and high-speed railway lines；The 56～105 pile pipe section and 129～152 pile pipe section were subject to mixed interference of dynamic DC and dynamic AC from metros and high-speed railway lines.The 105～129 pile pipe section was simultaneously affected by mixed interference from metro lines，high-speed railway lines，and high-voltage AC transmission lines.Under the mixed interference of AC and DC，the power-on potential of the pipeline was up to 2.00 V，the power-off potential was up to 0.31 V，and the AC voltage was up to 26.2 V；the AC current density of 7 places was higher than 30 A/m2，and interference protection measurements should be taken.

Key words： buried pipeline; stray current; metro interference; cathodic protection; dynamic interference

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