Electromagnetic interference (EMI) between overhead lines (OHL) and nearby pipelines may cause high-induced voltages. Their computation is important for the safe and reliable operation of the pipeline and necessitates the accurate evaluation of earth conduction effects on the impedance and admittance parameters of all conductors. In this article, a detailed formulation of the impedance and admittance parameters of OHL/pipeline configurations is presented and new expressions for the calculation of the mutual impedance and admittance between the overhead conductors and the buried pipeline are introduced. The mutual parameters for an OHL/pipeline configuration are evaluated by the new formulas and compared with those derived from existing ones, the method of moments and the finite element method. The propagation characteristics are also calculated justifying the use of the mutual admittance, that is typically disregarded in power systems EMI calculations. Transient simulation results with the developed formulas are performed to evaluate the importance of the proposed approach on EMI studies.

中文翻译：

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架空和地下导线之间的瞬态电磁干扰


架空线路 (OHL) 和附近管道之间的电磁干扰 (EMI) 可能会导致高感应电压。它们的计算对于管道的安全可靠运行非常重要，并且需要准确评估接地传导对所有导体的阻抗和导纳参数的影响。本文详细阐述了 OHL/管道配置的阻抗和导纳参数，并介绍了架空导线和埋地管道之间互阻抗和导纳计算的新表达式。 OHL/管道配置的互参数通过新公式进行评估，并与现有公式、力矩法和有限元法导出的公式进行比较。还计算了传播特性，证明互导纳的使用是合理的，而互导纳在电力系统 EMI 计算中通常被忽略。使用开发的公式进行瞬态仿真结果，以评估所提出的 EMI 研究方法的重要性。