Transmission lines are very important in electrical systems. High-frequency electromagnetic fields can couple to overhead lines. Once the wavelength of the high-frequency electromagnetic field is smaller than the height of the transmission line, the classic transmission line theory is no longer applicable. Although the traditional full-wave numerical algorithm can solve this problem, it is not efficient. Moreover, transmission lines often have multiple vertical ends and complex line layouts. In order to solve these problems, this article proposes a theoretical and effective method to solve the coupling of high-frequency electromagnetic fields with partial discontinuity transmission lines with scatterers in the presence of lossy ground. The asymptotic method with high computational efficiency is adopted, and the concept of scatterer is brought into the asymptotic method to consider more complex circuit structures. Numerical examples verify the accuracy and efficiency of the proposed method.

中文翻译：

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有损地面上方不连续的传输线的高频电磁场耦合


输电线路在电力系统中非常重要。高频电磁场可以耦合到架空线路。一旦高频电磁场的波长小于传输线的高度，经典的传输线理论就不再适用。传统的全波数值算法虽然可以解决这个问题，但效率不高。此外，传输线通常具有多个垂直端和复杂的线路布局。为了解决这些问题，本文提出了一种理论上有效的方法来解决有损接地情况下高频电磁场与带有散射体的部分不连续传输线的耦合问题。采用计算效率较高的渐近方法，并在渐近方法中引入散射体的概念，以考虑更复杂的电路结构。数值算例验证了该方法的准确性和效率。