IEC 61850-Based Feeder Terminal Unit Modeling and Mapping to IEC 60870-5-104

The feeder terminal unit (FTU) is a kind of remote terminal unit along distribution feeders that allows the communication of a local process to a master or central system. In order to realize the plug-and-play function of FTUs, the FTU information models by using the IEC 61850 modeling method are proposed. And the informationmodel and communication services model are mapped to telecontrol protocols IEC60870-5-104. The extensions to the IEC 60870-5-104 are also proposed to support the exchange of the model information. A prototype system is developed. The system demonstrated that the seamless communication between the master station and FTU can be realized using the proposed modeling and mapping methods.