Study On Substation Equipment Of On-line Monitoring System Model And Its Application Based On Source-end Maintenance

In recent years, covers improve the scientific and technological content, smart grid to improve power supply reliability, promote energy conservation and emissions reduction, including the promotion of new energy to harness the content, has become the mainstream of world power system developing direction. With the rapid development of our society and our economy, is constantly increasing and the scale of the power system grid development and continuous improvement of operating voltage, and becoming increasingly complex.In this context, on the development of condition on-line monitoring and condition assessment has put forward higher requirements, and as a framework for smart grid communication bridge network traffic in key areas, its performance directly affects the reliability and safety of the grid system as a whole. In the IEC61850 standard system was not enacted before, on-line monitoring system for substation equipment lack of uniform technical standards, makes a variety of devices, "interoperability" hindered the development of power-related technology, IEC61850 standard system birth, enables communication between power systems, interoperability between intelligent electronic devices and other issues have been resolved.First outlines the substation equipment to monitor the situation at home and abroad, analyzes the pros and cons of preventive maintenance and the condition-based maintenance of electric equipment, summarizes research on the online monitoring status made available online site, inter-site communication monitoring device does not meet the requirements of international standard IEC61850, IEC61850 based modeling is imperfect and the lack of monitoring device based on IEC61850 interface solution between stations, and so on. Secondly, the existing problems for China’s power grid monitoring systems, substation equipment monitoring and through in-depth study of IEC61850 communication and other related technologies, terminal maintenance mechanism of analytical data sources, combined with monitoring devices, inter-site communication features of the station, put forward some feasible monitoring program, gives practical and feasible application scheme. Using a variety of methods of analysis of the data and analysis on on-line monitoring of transformer fault instance illustrated on-line monitoring for power grid stability plays an important role.