Application of data source maintenance technology in relay protection information system

Aiming at the insufficient support of data source maintenance technology to the relay protection business,a method of modeling and communication data source maintenance is presented for the relay protection information system. The concept and implementation of data source maintenance technology are introduced and the defects of its application in the relay protection information system are analyzed. As the relay protection information model of master station CIM(Common Information Model) is too simple to supply the data support for relay protection business,a method for expanding the relay protection models of master station CIM is proposed. As the communication protocol of relay protection information system cannot describe and transmit the models between master and slave stations,which causes the lack of model semantics,a solution adopting IEC61850 communication between master and slave stations is suggested. With an application of relay protection fault analysis as an example,the expansion of relay protection fault analysis models in the CIM of master station is introduced,and the problems and solutions of IEC61850 communication between master and slave stations are presented.