Transformer grounding current monitoring device and monitoring system

The utility model relates to a transformer grounding current monitoring device and monitoring system, and relates to the technical field of power equipment monitoring. The monitoring device comprises a precision current transmitter electrically connected with the transformer; the control system is electrically connected with the precise current transmitter; the man-machine interaction module is electrically connected with the control system and the precise current transmitter respectively; the protocol converter is electrically connected with the man-machine interaction module and the control system; the photoelectric converter is electrically connected with the man-machine interaction module and the protocol converter; the monitoring device can realize all-weather real-time monitoring of the grounding current characteristic quantity of the transformer iron core and the clamp, and display and transmission of monitoring data, and provides an accurate and reliable basis for judgment of the operation state of th