Abstract：Transient electromagnetic radiation model of short dipole, in which pulse current is used as its excitation source, can be built based on electromagnetic field theory. Moreover, the transient radiation field was closely bound up with the pulse current of power cable. The transformation model between direct contact measured value and non-contact measured value was built through modeling experiments, and the non-contact measuring method of transient conduction disturbance in mine was advanced. The experimental results in mines show that non-contact measurement method can catch the time domain waveforms of power cable transient radiation in the instant of switching operations. Electric-field strength of the electromagnetic radiation field caused by pulse current may reach up to 4 V/m, which has great effect on electromagnetic environment.
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2012, Vol. 33 
