The key technologies research of power network model combination based IEC61970

IEC 61970 is the international standard of the control center's intercommunion. On the basis of this standard, we analyzed the specialty of model combination, and discussed specially for its key technologies, including model verify based on electric system rules, equipments' distinguish with control precinct based on borders define, and creating the increment model based on the model difference. At the same time, we discussed a model management on the base of editions for the model combination's application. At last, there is an introduction for achievement of model combination's progress in China now.