The latest international standard IEC 61850 is established for power system seamless communication based on object-oriented technique, which rules the substation information model and modeling method and provides many public actual equipments and equipment module models. Based on it, a simple substation information model and instantiation are constructed. The abstract communication service provided by IEC 61850 is analyzed, and appropriate service model for communication between control center and substation is built up. The substation configuration performances are described according to the definition of IEC 61850 configuration language.