Study on electromagnetic field distribution of impulse current wave

The 10/350 mu s impulse current wave which is generated by impulse current generator in the laboratory is simulated by Heidler function current model. Based on dipole theory, electromagnetic field equations are calculated. Combined with Heidler function current model, electromagnetic field time-space distribution of 10/350 mu s impulse current wave is simulated. The results of simulations show that with an increase in the length of the current element, the electromagnetic field intensity, caused by the current element, increases correspondingly. The electromagnetic field caused by the same current element decreases gradually with an increase in the distance. Based on the above conclusions, some electromagnetic protection measures of the laboratory are presented, which have specific meaning to the shield design of the lab and the health of workers in the lab.