Converter transformer iron core grounding current monitoring device

A converter transformer iron core grounding current monitoring device comprises a straight-through mutual inductor and a processing unit, an anti-interference sensor is arranged on the straight-through mutual inductor, the straight-through mutual inductor is connected with the processing unit, the straight-through mutual inductor is connected with the anti-interference sensor, and the straight-through mutual inductor is used for sensing grounding current signals of a transformer iron core to be detected. The sensing unit is used for sensing a grounding current signal and providing the sensed grounding current signal to the processing unit, the processing unit is used for analyzing the received grounding current signal to obtain a current effective value and comparing the current effective value with a pre-stored standard value, and when the current effective value is greater than the pre-stored standard value, the processing unit generates an alarm signal; the anti-interference sensor is used for generating a