Abstract
The electromagnetic interference problems of large-scale hollow reactor equipment are special and increasingly widespread. In order to thoroughly understand the electromagnetic interference of large hollow reactors on various equipment in a substation, a field test was performed near a SVC in a substation, and the electromagnetic field was explained from three aspects: the main ground network induced circulation, the secondary cable shield current, and the DC system ripple interference. Interference issues. Furthermore, a three-dimensional electromagnetic field simulation model was established for SVC and nearby areas, and the equivalence of the model was verified by comparing it with the spatial magnetic field and induced current on the site. Based on this analysis, the electromagnetic interference improvement and the effect of inductance value changes at different reactor heights were analyzed. The results show that, during normal operation of large hollow reactors, the electromagnetic interference between the nearby grounding system and the DC system has approached or exceeded its rated operating conditions. In the design, attention should be paid to the spatial location of the reactor and the ground network, the control room and the secondary screen cabinet.
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