雷击建筑物时的雷电流分布研究

Study on distribution of the lightning current when building stroked by a ligh tning

建立了雷电流、雷电防护系统、配电变压器等配电网络的模型,利用国际通用的电磁暂态分析程序EMTP研究了TT系统(一种典型的低压配电系统)在遭受雷击时,雷电流在TT系统中的分布。并研究了单相和三相供电、不同波形的雷电流、传输线的线路阻抗对雷电流分布的影响。

The models of the lightning current ,lightning protect ion system,distribution transformer are set up,and the distribution of the lig htning current in the TT system is calculated using EMTP when a building in the system is stroked by a lightning.The effect of some parameters on the lightni ng current distribution is studied.