基于先导发展模型的舰艇避雷防护评估仿真

  目的  雷电对空阔海域上的舰船危害极大，特别是随着电子、电气设备及封闭式集成桅杆的大量应用，舰船雷电间接效应日趋严重。为了有效开展舰载电子、电气设备的雷电间接效应试验，  方法  基于Marx发生器原理，设计并实现一种邻近雷击电场环境模拟装置。该装置利用可调单球隙实现冲击高压的峰值截断，通过高压极板与导电地平面建立邻近雷击电场模拟环境。
  结果  试验结果表明，该装置截断时间小于2 μs，跌落时间小于0.09 μs，能够产生符合GJB 1389A-2005要求的脉冲电场环境。  结论  模拟装置可为依据GJB 8848-2016开展系统电子、电气设备的邻近雷击间接效应研究提供设备支持。

Lightning protection evaluation technology of surface ship based on leader progression model

  Objectives  Lightning can be extremely harmful to ships on the open seas. Especially with the large-scale application of electronic and electrical equipment and closed integrated masts, the lightning indirect effect on ships is becoming increasingly serious. In order to effectively carry out the lightning indirect effect test for shipborne electrical and electronic equipment,  Methods  a kind of nearby lightning-electric field environment simulator based on the principle of Marx generator was designed and realized in this paper. The simulator realized the peak cut-off of the impact high voltage by using the adjustable single chopping sphere gap, and established a simulated nearby lightning-electric field environment through the high voltage plate and the conductive ground plane.
  Results  The test results show that the device has a cut-off time of less than 2 μs and a drop time of less than 0.09 μs, which can produce a pulsed electric field environment that meets the requirements of GJB 1389A-2005.  Conclusions  This paper can provide equipment support for the research on the indirect effect of the nearby lightning strokes on system electronic and electrical equipment based on GJB 8848-2016.