With the rapid development of power system

the network structure and grid operation is becoming more and more complex with the penetration of new energy resources and increased network size. It’s hard to realize reliable operation of bulk power system depending solely on a single control center

and then it is crucial to enhance coordination among multiple control centers

that is

to implement real-time sharing of network model

real-time data and graphs. This paper introduces the specifications for power system graphic description

CIM/G. The new specifications have overcome the shortcoming of inefficient graphic exchange based on CIM SVG that is only suitable for off-line graphic exchange

and provide a mechanism for panoramic storage

off-line exchange and on-line real-time remote browsing of graphs within a control center as well as between control centers. The specification CIM/G has successfully been applied in the smart grid dispatching and control system

to realize real-time on-line graph access between neighboring control centers or between superior control center and subordinate control center

providing technical support for horizontal integration and vertical interconnection of dispatching business.