NEW!IEC 61970-301:2016 is available as IEC 61970-301:2016 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. 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.