In this paper, quantitative sensitivity analyses of various parameters of water tree and input pulse are performed using Taguchi-based design of experiment method in order to verify the feasibility of time-domain reflectometry (TDR) method for the water tree detection in the power cable. Signal to noise ratio (SNR) and percent contribution (PC) of water tree and diagnostic pulse parameters are calculated, and the parameters are identified that have high influence on the reflected pulse. The simulation software (COMSOL Multiphysics) used for the analysis is verified by comparison with the experimental results of the cable with an artificial defect. Based on the sensitivity analysis, optimal diagnostic pulse parameters are proposed for the efficient detection of the water trees.

中文翻译：

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使用田口法进行电力电缆时域反射测量的水树和输入脉冲参数的灵敏度分析

本文采用基于田口设计的实验方法对水树和输入脉冲的各种参数进行定量灵敏度分析，以验证时域反射法（TDR）方法在电力电缆水树检测中的可行性。 . 计算水树和诊断脉冲参数的信噪比 (SNR) 和百分比贡献 (PC)，并确定对反射脉冲影响较大的参数。用于分析的仿真软件 (COMSOL Multiphysics) 通过与具有人工缺陷的电缆的实验结果进行比较来验证。基于敏感性分析，提出了最佳诊断脉冲参数，以实现水树的高效检测。