Referring to the defects of existing power information exchange bus mode in the semantic specification and the problem of models mismatch arising in the interoperability processes， adding a set of semantic model validation in IEC 61968 standard message bus is proposed. Namely， the consistency validation for information model and IEC 61968 standards should be done in the message bus. The ontology-based information model validation mechanism is described. For different levels of application requirements， two ontology validation modes based on common information model（CIM） and the Profile（the subset of CIM） are proposed. The validation algorithm including flow chart of these modes is described. Finally， according to the method， a set of model validation tool has been developed. The validity and availability of this tool are verified through practical application of tests.