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为了解决气体间隙型放电管在雷电防护应用中存在击穿电压高、响应时延长等问题,根据对汤森理论与帕森定律的理论分析,设计了一种触发型气体放电管,并在帕森定律的理论基础上提出了传统放电管击穿电压值乘以系数k(k<1)为触发型气体放电管的击穿电压。采用8/20μs模拟雷电流对触发型气体放电管做冲击试验,利用气体放电理论与试验相结合的方法,得出:触发型气体放电管与相同材料及极间距的传统气体放电管比,其击穿电压值小4倍左右;在相同的冲击电压下,响应时延可缩短百倍,且极小值可缩短至180 ns左右;在相同的冲击电流作用下,其残压上升陡度最大可减小0.4 k Vμs-1,研究结果在防雷实际应用中具有一定的实用价值。
In order to solve the problems of high breakdown voltage and prolonged response time of gas gap discharge tube in lightning protection applications, a triggering gas discharge tube was designed according to the theoretical analysis of Townsend theory and Parson’s law. The law of the law of Sen proposed the breakdown voltage of the traditional discharge tube multiplied by the coefficient k (k <1) for the trigger-type gas discharge tube breakdown voltage. The 8 / 20μs simulated lightning current was used to test the triggering gas discharge tube. By using the theory of gas discharge and the experiment, the ratio of the trigger gas discharge tube to the conventional gas discharge tube of the same material and electrode spacing was obtained. The breakdown voltage value is about 4 times smaller; under the same impulse voltage, the response delay can be shortened by a hundred times, and the minimum value can be shortened to about 180 ns. Under the same impulse current, the steepness of the residual voltage increase can be maximal Reduce 0.4 k Vμs-1, the research results have some practical value in the practical application of lightning protection.