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Characteristics of fulgurite-like structures under HV conditions: Effects on electrical earthing systems

机译：HV条件下富耐矿石结构特征：对电接地系统的影响

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Fulgurites are natural tubes of glass formed by the fusion of silica sand or rock from a lightning strike. The fulgurites have been produced artificially in HV conditions in the past. Recent studies have found that fulguritic structures can be formed in some other materials, such as bentonite and cement, as well. These fulgurites can change the overall physical and electrical properties of the original materials. Thus, formation of fulgurites can modify the performance of electrical earthing systems, both ordinary and those improvised with backfill materials. This study investigates the fulgurite formation under alternating, direct and impulse current application. Bentonite and sand were tested under high voltage conditions. The type of fulgurites and their effects on electrical earthing systems were studied by analyzing the resistivity and permittivity of original materials and fulgurites. It has been found that fulgurites formation has a severe effect on the earth resistance of grounding systems.
机译：Fulgurites是由粉冷袭击的硅砂或岩石融合而形成的玻璃天然管。在过去的HV条件下已经在人工中产生了富峰。最近的研究发现，富核结构也可以形成在一些其他材料中，例如膨润土和水泥。这些灯节可以改变原材料的整体物理和电气性质。因此，富集的形成可以改变电气接地系统的性能，普通和通过回填材料改进的那些。本研究研究了交替，直接和脉冲电流应用下的富抗突形成。在高压条件下测试膨润土和沙子。通过分析原始材料和富棱镜的电阻率和介电常数，研究了富棱镜的类型及其对电接地系统的影响。已经发现，富棱菌素形成对接地系统的地球抗性具有严重影响。

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