说明：  电力系统变压器空载合闸时励磁涌流的仿真，设置好了合闸时间，对励磁涌流波形和存在的谐波进行分析，能直观体现励磁涌流的特点。
(Power system transformer load switching inrush current simulation, set closing time, the inrush current waveform and the presence of harmonic analysis, can directly reflect the characteristics of the inrush current.)