Information Model for Power Grid Fault Diagnosis Based on Coordination between IEC 61970 and IEC 61850

To relieve the difficulty to obtain complete and standardized information for power grid fault diagnosis application,the information demand of fault diagnosis is analyzed.Based on the coordination between IEC 61970 and IEC 61850,a uniform information model serving for fault diagnosis application is designed.The uniform information model is described in unified modeling language and its modeling approach refers to the common information model in IEC 61970 and the hierarchical model in IEC 61850.The uniform information model associates the secondary devices with primary equipments on the scope of the whole network.The transformation rules of generating the uniform information model are explored.A feasible solution for integration of all kinds of information required by fault diagnosis is obtained,which is meaningful for pushing the fault diagnosis into practice.