Model Design of Electric System State Estimation Based on CIM

Common information model (CIM) provides a logical view of the physical aspects of energy management system information. This paper proposes a software model that extends CIM for the least square based state estimation. Three types of interfaces are included to realize input and output functions. Topology model is established according to the network elements interconnections and the states of switches. An object oriented state estimation is performed using the model in which extended classes with their relative properties are built. The CIM based state estimation model is applied to the Zaozhuang power networks and is proved effective by the operation results.