To ensure interoperability between devices from different manufacturers， IEC 61850 models， such as those of the common data class， data class， data set and report， are further studied. A modeling method for power telecontrol communication based on IEC 61850 is proposed， and logical devices， logical nodes and information exchange service models are developed. In the model， the control center serves as the IEC 61850 client， the intelligent electronic device（IED） or proxy/gateway in the substation serves as the IEC 61850 server， with the power telecontrol communication between control center and substation realized by IEC 61850 services. The application association model is used to build bilateral connection between IEC 61850 client and server， the data model to access the telemetry and telesignaling data， the data sets model and report model for interrogation and cyclic uploading of telemetry and telesignaling data， active displacement uploading and sequence of event（SOE） recording.