油气管道阴极保护系统的动态电位控制研究

Study on Dynamic Potential Control of Cathodic Protection System for Oil and Gas Pipelines

摘要: 针对传统恒电位仪对埋地管道周边土壤参数变化适应性差、易因电位调节僵化导致管道欠保护或过保护的问题，本文提出动态电位调控方案并研发相应的阴极保护装置。该装置通过实时监测土壤温度和电阻率，动态调整管道保护电位，确保其在复杂工况下仍具有较好的阴极保护效果。经实验验证，本文所提方案优于传统方案，也比现有文献中同类装置更能适应土壤参数的波动。研究成果可为油田、化工领域埋地管道防腐提供技术参考，对降低腐蚀泄漏风险、延长管道服役寿命具有工程价值。

Abstract: Aiming at the problems that traditional potentiostats have poor adaptability to changes in soil parameters around buried pipelines and tend to cause under-protection or over-protection of pipelines due to rigid potential adjustment, this paper proposes a dynamic potential regulation scheme and develops a corresponding cathodic protection device. The device dynamically adjusts the pipeline protection potential by real-time monitoring of soil temperature and resistivity, ensuring that it still achieves good cathodic protection effects under complex working conditions. Experimental verification shows that the proposed scheme is superior to the traditional scheme and has better adaptability to soil parameter fluctuations compared with similar devices reported in existing literature. The research results can provide technical reference for the anti-corrosion of buried pipelines in the oilfield and chemical industry fields, and have engineering value in reducing the risk of corrosion leakage and prolonging the service life of pipelines.