IEC 61970-301:2013 defines the Common Information Model (CIM), that is an abstract model representing all the major objects in an electric utility enterprise typically involved in utility operations. By providing a standard way of representing power system resources as object classes and attributes, along with their relationships, the CIM facilitates the integration of Energy Management System (EMS) applications developed independently by different vendors, between entire EMS systems developed independently, or between an EMS system and other systems concerned with different aspects of power system operations, such as generation or distribution management. SCADA is modeled to the extent necessary to support power system simulation and inter-control center communication. The CIM facilitates integration by defining a common language (i.e. semantics) based on the CIM to enable these applications or systems to access public data and exchange information independent of how such information is represented internally. Major changes from the fourth edition include the following:- transformer models have been modified to be consistent for use by distribution and transmission purposes;- a more general and clear naming approach was added and several ambiguous attributes related to naming were dropped;- phase component wires models have been enhanced to describe internal phase specific attributes and connections;- addition of diagram layout models to facilitate the exchange of diagram layout information.
IEC 61970-301:2013 deals with the common information model (CIM), an abstract model that represents all the major objects in an electric utility enterprise typically involved in utility operations. The object classes represented in the CIM are abstract in nature and may be used in a wide variety of applications. The use of the CIM goes far beyond its application in an EMS. This standard is to be understood as a tool to enable integration in any domain where a common power system model is needed to facilitate interoperability and plug compatibility between applications and systems independent of any particular implementation. Major changes from the third edition include the following: - extensions have been added to support UCTE exchange; - the transformer regulation model has been expanded to support phase shifting transformer models needed by ENTSO-E; - zero and negative sequence impedance terms have been added; - new StateVariables package has been added; - additional classes have been added.
IEC 61970-301:2016 lays down the common information model (CIM), which is an abstract model that represents all the major objects in an electric utility enterprise typically involved in utility operations. By providing a standard way of representing power system resources as object classes and attributes, along with their relationships, the CIM facilitates the integration of network applications developed independently by different vendors, between entire systems running network applications developed independently, or between a system running network applications and other systems concerned with different aspects of power system operations, such as generation or distribution management. SCADA is modeled to the extent necessary to support power system simulation and inter-control centre communication. The CIM facilitates integration by defining a common language (i.e. semantics) based on the CIM to enable these applications or systems to access public data and exchange information independent of how such information is represented internally. This new edition includes the following significant technical changes with respect to the previous edition: - new model for grounding including Petersen coils; - models for HVDC; addition of Static Var Compensation models; - phase shift transformer updates; - short circuit calculations based on IEC 60909; - addition of non-linear shunt compensator; - addition of model for steady state calculation inputs, Steady State Hypothesis; - addition of base frequency model; - Annex A with custom extensions added.
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