Scheme of the data receiver screening through the data identification is brought forward, aiming at the technical problem that how to deal with two kinds of redundancy data producing by double sets of data acquisition equipment configuration of process level and bay level in smart substation. Method of point based real-time screening is used for telemetry data of station control layer and SV data of process level, and method of dynamic and static screening combination is used for remote data of station control layer and GOOSE data of process level. The theoretical analysis and application of this scheme in many practical projects show that this program will not increase or modify hardware equipment with clear processing logic, it increases reliability of data in smart substation and is easy to overhaul & running.