Electric energy quality monitoring device

The utility model belongs to the technical field of electric energy monitoring, and discloses an electric energy quality monitoring device, which is characterized in that a multi-channel data acquisition module comprises a data acquisition unit for acquiring electric energy of a power grid, and a filtering unit connected with the output end of the data acquisition unit; the control module comprises an AD analog-to-digital conversion unit, a frequency measurement unit and an electric energy processing unit connected with the AD analog-to-digital conversion unit. The AD conversion unit is connected with the output end of the filtering unit and the output end of the frequency measuring unit; the input end of the frequency measuring unit is connected with the output end of the filtering unit; the communication module comprises a man-machine interaction unit and a communication unit for transmitting information; the input end of the man-machine interaction unit is connected with the output end of the AD conversion