Station level intelligent device communication monitoring device

The invention relates to a monitoring technology of a transformer substation automatic system, in particular to a station level intelligent device communication monitoring device. The invention solves the problems of large debugging workload and uncertainty of the transformer substation automatic system in an installation process and lack of effective means for detecting correctness of a communication protocol between a scheduling main station and a centralized control substation in the transformer substation automatic system in the operation process. The station level intelligent device communication monitoring device comprises an acquisition circuit module, a digital-to-analog conversion module, a data transmission protocol conversion module, an embedded type microprocessor, a data storage module and a graphic showing module, wherein the output end of the acquisition circuit module is connected with the input end of the digital-to-analog conversion module, and the output end of the digital-to-analog convers