In view of the time-consuming and tedious artificial selection of smart substation information uploaded to control centers

an architecture and flow chart of automatic model reduction and information merger are given to solve this problem. The key technologies of reduction of primary and secondary equipment models

legality check of models before and after reduction

model semantic recognition

method and rules of information merger

information list table

an information exchange from substation to control center

etc. are analyzed. On this basis

a smart substation model hierarchical classification reduction and information merger system is developed and successfully applied to the alarm and graphics gateway based on an embedded platform in the smart substation. The application results show that the developed software meets the different control centers' needs while reducing manual work. This work is supported by State Grid Corporation of China.