NCG's experiences with CIM based network modeling

North China Grid (NCG) has been expanding rapidly in the recent years, along with which new issues emerge in system operations. There is an urgent need for NCG to construct and maintain the entire NCG transmission network model according to time points precisely and reliably to deal with those issues. However it becomes difficult to achieve this goal with the conventional centralized modeling method. Fortunately CIM standard has grown mature enough to afford a chance for developing a distributed method of modeling. NCG collaborates with technology vendors to design a solution based on the CIM standard. The goal is achieved by developing and deploying a cooperative and extensible model management system. With this new system modeling activities are performed cooperatively between the regional and local modeling authorities and as a result the precise and the quality of the NCG regional model is enhanced.