table 3. IEC 62325 standards. Type of Standard IEC 62325 Standards for Deregulated Energy Markets Description CIM canonical model IEC 62325-301 Base market model. Profile standards IEC 62325-351 IEC 62325-450 IEC 62325-451-X IEC 62325-452-X One or more companion standards that provide the profiling guidelines (IEC62325-351 and IEC62325-450) or define a profile based on a use case (IEC62325-451-X or IEC62325-452-X). IT schema W3C XSD IEC 62361-100 The W3C XSD standard describes how the XSD is produced and used. The IEC62361-100 companion standard describes the XSD to XML mapping that is required for the CIMXML message payload. Instance data W3C XML The W3C XML standard describes the XML format. (a) (b) figure 7. A sample extract from (a) an RDFS-based and (b) XSD-based profile. 76 ieee power & energy magazine january/february 2016