Abstract
This paper proposes an extension of International Electrotechnical Commission (IEC) Common Information Model (CIM) to accomplish the interoperability requirements for the power system state estimation (SE). The proposed method utilizes a multiarea SE (MASE) approach, suitable for the power system networks, which can be divided into several independently controlled subareas. The standard IEC CIM model is extended for exchanging the SE results of the MASE from subareas to a central coordinator (CC) in the standard format, which might individually use diverse proprietary software applications and databases. The suggested schema defines the data exchange format among the subareas and the CC without modifying proprietary databases and software applications. The new MASE approach, used to demonstrate the proposed CIM extension process, requires lesser data exchange as there is no topology information exchange among the subareas and the CC, thus resulting in reduced communication bandwidth requirement. The effectiveness of the proposed approach has been demonstrated on IEEE 30 bus system and 246-bus reduced Northern Regional Power Grid Indian system.
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