In this article, analytical methods are proposed for the location of a short circuit fault in a power cable using sweep frequency response analysis (SFRA). The impedance spectroscopy is estimated using classical transmission line theory, whereas the driving point impedance function of the cable is proposed to be constructed either by using experimental SFRA data or analytically from the knowledge of the frequency-dependent parameters, material properties, and dimensions of the cable. Finally, an analytical formula is proposed for the estimation of the location of a short-circuit fault using the location of poles and zeros of the impedance function before and after the fault. The formulae are validated using finite element method (FEM) software simulations as well as experimentally on a test cable.

中文翻译：

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使用扫频响应分析来定位电缆短路故障的分析方法


本文提出了使用扫频响应分析 (SFRA) 来定位电力电缆短路故障的分析方法。阻抗谱使用经典传输线理论进行估计，而电缆的驱动点阻抗函数则建议通过使用实验 SFRA 数据或根据频率相关参数、材料特性和尺寸的知识进行分析来构建。电缆。最后，提出了一种利用故障前后阻抗函数的极点和零点位置来估计短路故障位置的解析公式。使用有限元法 (FEM) 软件模拟以及测试电缆上的实验对公式进行了验证。