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Wavelet-based Analysis of Impulse Grounding Resistance-Experimental Study of the 'A'-type Grounding System

机译:基于小波的脉冲接地电阻分析-“ A”型接地系统的实验研究

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This article presents the results of experimental investigation concerned with the "A"-type grounding system's impulse characteristics, which are utilized for grounding of high-voltage transmission line towers. The investigation results point to the presence of high-frequency components in voltage and current signals that are not caused by tower footing response to the impulse current. Additionally, both surge generator coupling and measuring circuit remain their main source. High-frequency components of signals are extracted from voltage and current signals by means of the discrete wavelet transform. In addition to being external influence results, the extracted components have very low energy content as well as short duration. The discrete wavelet transform analysis application has validated the existence of external influences.
机译:本文介绍了有关“ A”型接地系统的脉冲特性的实验研究结果,该接地特性用于高压输电铁塔的接地。研究结果表明,电压和电流信号中存在高频分量,这些高频分量不是由塔基对脉冲电流的响应引起的。此外,电涌发生器的耦合和测量电路仍然是其主要来源。通过离散小波变换从电压和电流信号中提取信号的高频分量。除了是外部影响的结果外,提取的成分还具有非常低的能量含量且持续时间短。离散小波变换分析应用程序已验证了外部影响的存在。

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