Study and design of power quality monitoring devices based on IEC61850 and PQDIF

Power quality monitoring device is one of the necessary equipments in intelligent substations, and its data transfer and storage technology is an important research field. Based on the characteristics of IEC61850 and PQDIF, this paper builds an IEC61850 IED device information model for power quality monitoring devices, and realizes real-time data communication using IEC61850 data and data set service. PQDIF data format mapping between the historical statistical data and event data is realized using XML files, then statistical data could be uploaded by IEC61850 file services and PQDIF data format. Based on the above research, a new hardware and software design scheme is proposed. The design and trial production of power quality monitoring device has passed a third party professional and professional software testing. It verifies the correctness of programs and model of the power quality, as well as the usefulness of the device.