• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy and power engineering >Study of Lightning Safety Distance Using Rolling Sphere Method
【24h】

Study of Lightning Safety Distance Using Rolling Sphere Method

机译：滚动球法研究雷电安全距离

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The development of a computer program for evaluation of lightning safety distance between the tower and satellite dish is written in M-File MATLAB. The 3-dimensional illustrative graphics model is used to capture better understanding on how lightning protection system (LPS) works. The study of physical length of grounding electrode used on the tower is found to be significantly affecting the grounding system performances where they depend on magnitude of dispersed lightning strikes current and the settling time for the current to completely disperse. The grounding system performance is studied by using lightning impulse current (LIC) generator, simulated in OrCad PSpice software. It is found that the optimum length of vertical lightning rod in LPS is the same with the striking distance. There is no significant improvement is observed in lightning safety distance if the length of vertical lightning rod is higher than striking distance. The lightning strike peak current that has larger magnitude than the withstanding insulation level of specified object causes no physical damage. It is because the lightning safety distance increases when the lightning strike peak current becomes higher. It is also found that the lower grounding impedance generates higher magnitude of dispersed peak current and faster settling time.
机译：用M-File MATLAB编写了用于评估塔架和卫星天线之间的雷电安全距离的计算机程序的开发。 3维说明性图形模型用于更好地理解防雷系统（LPS）的工作原理。研究发现，对塔上使用的接地电极的物理长度的研究会严重影响接地系统的性能，其中接地系统的性能取决于分散的雷击电流的大小以及电流完全分散的稳定时间。使用OrCad PSpice软件模拟的雷电冲击电流（LIC）发生器来研究接地系统的性能。结果表明，LPS中垂直避雷针的最佳长度与打击距离相同。如果垂直避雷针的长度大于击中距离，则在雷电安全距离上没有观察到明显改善。雷击峰值电流的大小大于指定对象的承受绝缘水平，不会造成物理损坏。这是因为当雷击峰值电流变高时，雷电安全距离增加。还发现较低的接地阻抗会产生较高的分散峰值电流幅度和更快的建立时间。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号