Modeling Direct-Current Interference on Pipelines with Zero Potential at Infinity Through Electric Field Decomposition

IF 1.1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Pub Date : 2024-03-12 DOI:10.5006/4466

Liang Dong, Yan Shen, Tiansiyu Gan

引用次数: 0

Abstract

Oil and gas pipelines are susceptible to direct current interference from nearby third-party cathodic protection or direct current transmission systems. This paper proposes a new method for analyzing direct current interference and its mitigation measures. The proposed method is based on the boundary element method of analyzing cathodic protection systems and direct current interference. Infinity is used as the zero-potential point instead of the pipeline itself. The soil potential near the structure is divided into the cathode electric field, the anode electric field, and the electric field generated by direct current interference. The proposed method was validated to be effective for modeling these electric fields. The results indicate that interference shifts the pipeline’s body potential positively or negatively compared with that in its normal cathode state. The interference was categorized on the basis of whether it was generated by the anode or cathode electric field, and mitigation measures were designed for each type of interference through electric field cancellation.

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通过电场分解模拟无穷远零电位管道上的直流干扰

油气管道容易受到附近第三方阴极保护或直流输电系统的直流干扰。本文提出了一种分析直流干扰及其缓解措施的新方法。所提方法基于分析阴极保护系统和直流干扰的边界元法。使用无穷大作为零电位点，而不是管道本身。结构附近的土壤电势分为阴极电场、阳极电场和直流干扰产生的电场。经过验证，所提出的方法可以有效地模拟这些电场。结果表明，与正常的阴极状态相比，干扰会使管道的体电位发生正向或负向移动。根据干扰是由阳极电场还是阴极电场产生的，对干扰进行了分类，并通过电场抵消为每种干扰设计了缓解措施。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Corrosion MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING

CiteScore

2.80

自引率

12.50%

发文量

审稿时长

3 months

期刊介绍： CORROSION is the premier research journal featuring peer-reviewed technical articles from the world’s top researchers and provides a permanent record of progress in the science and technology of corrosion prevention and control. The scope of the journal includes the latest developments in areas of corrosion metallurgy, mechanisms, predictors, cracking (sulfide stress, stress corrosion, hydrogen-induced), passivation, and CO2 corrosion. 70+ years and over 7,100 peer-reviewed articles with advances in corrosion science and engineering have been published in CORROSION. The journal publishes seven article types – original articles, invited critical reviews, technical notes, corrosion communications fast-tracked for rapid publication, special research topic issues, research letters of yearly annual conference student poster sessions, and scientific investigations of field corrosion processes. CORROSION, the Journal of Science and Engineering, serves as an important communication platform for academics, researchers, technical libraries, and universities. Articles considered for CORROSION should have significant permanent value and should accomplish at least one of the following objectives: • Contribute awareness of corrosion phenomena, • Advance understanding of fundamental process, and/or • Further the knowledge of techniques and practices used to reduce corrosion.