RESEARCH ON A SUBSTATION AUTOMATION SYSTEM BASED ON IEC 61850

While its control, monitoring and protection functions are performed, a substation automation system should become a open system, i.e., to implement the information sharing of equipments from different manufacturers and to possesses interoperability. For this purpose, a standard for communication networks and system within substations, i.e., IEC 61850, is worked out by IEC. On the basis of analyzing the concepts of the information leveling, unified object-oriented modeling, dada object self-description and abstraction of communication service mapping, etc., a frame of the communication system within substations which is conformed to IEC 61850 is proposed. Following the idea of object-oriented modeling and abstraction of service mapping, the implementation of the software system and the unified hardware platform of intelligent electronic devices (IDEs) within substations as well as the problems should pay attention to are researched in detail. This work is available for reference in the implementation of the interoperability, expansibility and high reliability of substation automation system (SAS).