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首页> 外文会议>International Conference on Lightning Protection >Lightning transient impedance analysis of a junction concrete gap soaked in salt water under varying air pressure conditions
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Lightning transient impedance analysis of a junction concrete gap soaked in salt water under varying air pressure conditions

机译：不同空气压力条件下盐水中浸泡的结混凝土间隙的闪电瞬态阻抗分析

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This paper presents our investigation of the properties of lightning impulse discharges and the extent to which they depend on the pressure of air entering concrete material soaked in salt water. The experimental results determined that 1) the discharge through a concrete wall including a junction structure displays distorted voltage waveforms in the first half cycle; 2) these distorted waveforms also cause high-frequency noise exceeding 100 kHz; 3) a gap in which the air pressure exceeds 2 atm is capable of suppressing the amount of high-frequency noise above 100 kHz by one third; 4) for air pressures exceeding 2 atm, subjecting the discharge waveforms to Fourier transform makes it possible to specify the dependency of the impedance on the frequency, and to estimate the impedance elements and their circuit in the frequency bands of conventional lightning currents.
机译：本文介绍了我们对雷电脉冲放电性质的调查以及它们取决于进入盐水中浸泡混凝土材料的空气压力的程度。实验结果确定，通过包括结结构的混凝土壁，通过混凝土壁放电在前半周期中显示扭曲的电压波形; 2）这些扭曲的波形也会导致超过100 kHz的高频噪声; 3）空气压力超过2个ATM的间隙能够将高于100kHz的高频噪声量抑制三分之一; 4）对于超过2个ATM的空气压力，使放电波形进行傅里叶变换使得可以指定阻抗对频率的依赖性，并估计传统雷电电流的频带中的阻抗元件及其电路。

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