| In the past 10 years, the substation automation technology in China, whether it is imported from abroad, or domestic self-developed system and equipment, there is a significant development in technology and quantity. Integrated substation automation replaces the conventional substation two equipment, simplifies the secondary wiring of substation two, its unique superiority, reflected in the reliability of electric power operation quality, economy etc..220kV pan Qiao substation has been put into operation for almost 15 years, despite the many equipment modification and replacement, but due to the equipment to run a long time, serious aging, the reliability of equipment operation and system security and stability caused many hidden dangers, the significance of reconstruction of automation system.In this paper, the domestic and foreign development of substation automation system were described, and the status quo from Pan Bridge, technical problems need to be solved for the automation system transformation process is studied. In view of the original station two sets of monitoring system running at the same time, the network structure is too complex, and compares two kinds of network redundancy configuration, the final transformation of double ring network; for the substation monitoring center and the spacer layer between 103 statute does not adapt to the new power electronic devices access to the IEC61580 standard is studied, and the unified communication protocol for total station IEC61580 protocol; analyze the synchronization problems of substation and dispatching station and between, combine the information synchronization theory, formulated the synchronization scheme of the substation, and explained the RCS9700 system on the time selection. This paper also expansion processing far motivation double main implementation of transformation and debugging and the background database is analyzed with the.Finally, summarizes the experience of the 220kV Pan Bridge automation transformation project, and has carried on the objective evaluation of the engineering effect, basically forming a suitable for old station integrated Ningbo area since the upgrade experience similar transformation, easy reference. |
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