摘要
提出了雷击时室内磁场分布的计算方法，分析了雷击建筑物时在室内产生的磁场的一些特点，比较了不同结构的雷电保护系统对磁场分布的影响．实验结果验证了计算方法的正确性．
When lightning strikes a building, there is strong magnetic field in the building which is equipped with protecting system. The magnetic field is created by current in return path of strike and in lightning protecting system. The return path of strike and conductors of the protecting system can be represented by an additional thin wire in the wire axis for the computation of magnetic field, and the shielding effect of the wall in the building can be ignored. A method for numerically calculating magnetic field in the building struck by lightning is described. The waveform and distribution of magnetic field strength in the building with typical protecting system are also obtained. Finally, the calculation method is verified by the result of the experiment using impulse current.
出处
《华中理工大学学报》
CSCD
北大核心
1998年第4期90-93,共4页
Journal of Huazhong University of Science and Technology
关键词
雷击
磁场分布
数值计算
建筑物
lightning strike
magnetic field distribution
numerical calculation
