Modeling And Implementation Of Power Quality Monitoring System Based On IEC 61850

IEC 61850 is the newest national standard about communications network and system in substations, and it is the best way to realize communications within and between substations without barricades. The IEC 61850 standard system is lucubrated in this paper, then the origination, system, destinations, characteristic of IEC 61850 and the methods and steps of modeling an IED device according to IEC 61850 are presented. The foreign and domestic progress about this series standard have summarized from foreign and domestic articles. The background and actuality of the communication between IEDs and IEDs , IED and centre station in substation are introduced and brings forward that the significance of using IEC 61850 in power quality monitoring system.This paper relies on power quality monitoring system based on IEC 61850 in electrization railway in Jiangxi and taking a real power quality monitoring device as an example, based on kernel ideas of IEC 61850. Then article brings forward a perfect methods and step to modeling according to the need of locale substation and functions of device. The modeling process is also a reflection to standard's thinking, including logical node and data object modeling, logical device modeling and communication service modeling. The modeling configuration files were used all right.Meanwhile the configuration description language (SCL) is lucubrated in this paper. Then the method of describing power quality monitoring system by the SCL is analyzed and the step of creating a device configuration document is emphasized. Introducing how to realize the modeling tool by VC++.At last, the mode of using IEC 61850 in Substation Automation System is enumerated. What's more, this new standard will take large influence and there still have many technical problems to be solved. The prospects of this standard are put forward in the end of this paper.