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<p>This study presents a novel contribution to the mitigation of AC induced corrosion in buried pipelines by demonstrating the effectiveness of power factor correction as a dual-purpose strategy. This work highlights how improving the power factor in AC power transmission lines can significantly reduce electromagnetic interference and enhance the electrochemical stability of nearby pipelines. A comprehensive multiphysics methodology is employed, combining electromagnetic modeling, material characterization, and electrochemical analysis. The induced AC current density J<sub>ind</sub> is identified as the key parameter driving corrosion behavior. Parametric studies show that low soil resistivity and short separation distances between AC power transmission lines and buried pipeline exacerbate electromagnetic interference effects by increasing J<sub>ind</sub> and expanding corrosion prone zones. Electrochemical impedance spectroscopy tests on X70 steel in a simulated soil environment confirm that higher AC current densities lead to a sharp decline in polarization resistance and a corresponding rise in corrosion rate. By increasing the power factor from 0.80 to 0.99, the proposed strategy achieves an 18.83% reduction in J<sub>ind</sub>, along with a significant contraction of high risk zones. These findings validate PFC as a cost effective, energy efficient and protective measure for electromagnetic interference sensitive infrastructure corridors.</p>

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Power factor correction as a dual-purpose strategy for mitigating AC-induced pipeline corrosion and enhancing grid efficiency

  • 期刊论文

  • 发表日期：

    2025年10月6日

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  • Ahlem Chahinez Kadri,
  • M’hamed Ouadah,
  • Sofiane Chabane

摘要

This study presents a novel contribution to the mitigation of AC induced corrosion in buried pipelines by demonstrating the effectiveness of power factor correction as a dual-purpose strategy. This work highlights how improving the power factor in AC power transmission lines can significantly reduce electromagnetic interference and enhance the electrochemical stability of nearby pipelines. A comprehensive multiphysics methodology is employed, combining electromagnetic modeling, material characterization, and electrochemical analysis. The induced AC current density Jind is identified as the key parameter driving corrosion behavior. Parametric studies show that low soil resistivity and short separation distances between AC power transmission lines and buried pipeline exacerbate electromagnetic interference effects by increasing Jind and expanding corrosion prone zones. Electrochemical impedance spectroscopy tests on X70 steel in a simulated soil environment confirm that higher AC current densities lead to a sharp decline in polarization resistance and a corresponding rise in corrosion rate. By increasing the power factor from 0.80 to 0.99, the proposed strategy achieves an 18.83% reduction in Jind, along with a significant contraction of high risk zones. These findings validate PFC as a cost effective, energy efficient and protective measure for electromagnetic interference sensitive infrastructure corridors.