Information Modeling For Condition Monitoring Of Electrical Equipment Based On IEC61850 And Software Development For Information Exchange

Power transformer and gas insulated switchgear are important substation equipments in power system. As the voltage level rises and network capacity expands, ensuring reliable operation of them is more and more important for maintaining the entire power system's security and stability, and on-line monitoring technology of electrical equipment is increasingly showing its importance and necessity. Currently, the lack of a unified electrical equipment on-line monitoring system standard makes on-line monitoring equipments made by different manufacturers use different types of communication protocol or different versions of the same protocol. This results in non-interoperability between devices unless it takes a considerable price for converting the protocol. The IEC61850 standard is an international standard for substation communication networks and systems, designed to unify the substation automation systems and make intelligent electronic devices from different manufacturers achieve interoperability.Based on in-depth analysis and study of the IEC61850 standard, this article makes sum of the IEC61850 system architecture and key technical content; make applied research of IEC61850 object-oriented modeling ideas , put forward information modeling methods for electrical equipment condition monitoring intelligent electronic devices based on IEC61850 and use the substation configuration description language for describing condition monitoring models of transformers and gas insulated switchgear; develop server and client information exchange software based on manufacturing message specification application layer protocol, and it has been applied to the intelligent component of transformer.Through conformance test and intercellular communication experiments, the file describing the model has passed its test based on the standard syntax (Schema mode) , in line with IEC61850 static test configuration file (ICD) accuracy requirements in the conformance test; server's functionality has passed conformance test; client has achieved a variety of operations on the server.