With the development of smart grids

all kinds of smart grid information systems appear to be distributed and heterogeneous

making it necessary to facilitate smart grid information sharing and interaction by enhancing the interoperability of information systems. Aimed at improving the interoperability of CIM/E based smart grid model information

the structure of CIM/E template and its constraints on data and the expansion mode of CIM/E schema are analyzed. And CIM/E schema version management as well as the mapping system between CIM/E and CIM RDF schema is established

while the control and application-oriented flexible expansion of CIM/E schema used in grid model information interoperability is achieved. The effectiveness of CIM/E schema version management and schema mapping is validated through actual mutual conversion between CIM/E and CIM/XML

the ability of synchronizing CIM/E schema with the steadily evolving CIM versions is guaranteed

and the international promotion of CIM/E standard further promoted.