IEC 61850 and OPC based heterogeneous power quality monitoring device integrating method and gateway

Abstract

The integration method includes steps: using private comm protocol of each manufacturer to obtain private data collected by quality monitoring device for isomeric quality of power supply (QPS); keeping to IEC 61850 modeling rules to convert private data to object model of QPS data accorded with IEC 61850 standard; based on mapping principle to map IEC 61850 model to united OPC data format; following OPC criterion to provide OPC open application program interface. The invention also discloses data gateway of QPS in multiple protocols based on IEC 61850 and OPC. Using the method and gateway, the invention integrates and connects each isomeric QPS monitoring devices to realize sharing and unifying system resources as well as transparent inter accessing information between the monitoring device and automatic system of digitalized transformer substation. Advantages are: abundant comm protocols and intefaces, raised integrative efficiency, and satisfying requirement in future.

Description

technical field [0001] The invention relates to a power quality monitoring technology in the field of power system automation, in particular to an integration method and a gateway for heterogeneous power quality monitoring equipment based on IEC 61850 and OPC. Background technique [0002] The power quality monitoring system is mainly composed of two subsystems, the main station and the substation. The main station subsystem monitors the power quality data and changes obtained by the power quality monitoring equipment of the sub-station subsystem in real time through the dedicated power network or the public telephone network, automatically classifies and processes the collected data, and forms a report. With the continuous progress and improvement of power quality monitoring technology, various equipment and systems have emerged in the field of power quality monitoring. Due to the lack of unified standards and specifications, devices from different manufacturers use differ...

AI Technical Summary

Problems solved by technology

Both methods have the following defects: (1) They are not universal and developable, and cannot realize seamless interconnection and intercommunication between master stations and substations of different manufacturers, and cannot meet the requirements of future digital substations based on IEC 61850. Interface requirements cannot meet the requirements of system operation and power information transformation in the next few years; (2) It is not conducive to the expansion and upgrading of the system, which will eventually lead to repeated construction of the entire system, resulting in serious waste of resources

However, OPC itself only defines a set of simple mechanisms to express semantics, and does not define any application semantics, such as programming models or implementation-specific semantics

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