基于表面闪络放电原理的雷电流导流载体的应用研究

Application Study of the Lightning Current Conductor Based on the Surface Flashover Theory

雷电导流条在设计之初的目的就是在于对特定条件下的系统结构进行雷电疏导,其主要依据的原理是表面闪络原理,利用高频电流的趋肤效应,人为的改变单位区域的电场畸变率来实现定向闪络传导的目的。通过雨蚀数据推测在风沙严重的条件下,表面粘贴方案的产品有效寿命恐难保证。铆钉结构产品的优势不仅在于其稳固的结构形式,更在于其金属导体材料的组成。金钛合金在大电流作用下同样具有较高的抗氧化性,因此在通过200 k A的雷电流测试后并没有出现大面积升华显现,保证了金属导体外观结构的稳定性、金属片与基材牢固的结构也没有造成基材的损坏,通过实验表明,在铆钉结构的导流条工作面传导200 k A雷电流的情况下,其基层底部的金属铆钉没有任何损伤。

The initial design objective of lightning current conductive tape is mainly to conduct the lightning current under a certain condition, and its principle is based on surface flashover and making use of the skin effect of high frequency current to change the electric field distortion rate in assigned area to realize the directional conduction. Under heavy wind and sand condition, it is difficult to guarantee the valid lifetime of the product by surface paste scheme by conjecturing from the rain corrosion data. The advantage of rivet structure product is not only of its stability, but also is made of metal conductive materials. Gold-titanium alloy is of anti-oxidant performance under the stress of high current, and test results of 200 k A lightning current stressing indicate that, there is no obvious sublimation, so it can guarantee the appearance structure stability of the metal conduct and the base material including the rivet is also not damaged.