Smart substation is one key part of smart grid. Study on distributed busbar protection（DBBP） based on IEC 61850 and its application are very important for safe and reliable operation of substation. The layered architecture system of IEC 61850 is analyzed， and then the implementation scheme for DBBT is proposed. Based on information model structure of IEC 61850， the methods and process of modeling of DBBT are investigated. According to the characteristics of Ethernet communication network between processing layer and bay layer under IEC 61850， the transmission scheme for sample value of DBBT and generic object oriented substation event（GOOSE） information is put forward.