ÖVE/ÖNORM EN 61850-7-4

This part of the standard specifies the information model of devices and functions related to substation applications. In particular, it specifies the compatible logical node names and data names for communication between Intelligent Electronic Devices (IED). This includes the relationship between Logical Nodes and Data. The Logical Node Names and Data Names defined in this document are part of the class model introduced in Part 7-1 and defined in Part 7-2. The names defined in this document are used to build the hierarchical object references applied for communicating with IEDs in substations and on distribution feeders. The naming conventions of Part 7-2 are applied in this part. To avoid private, incompatible extension rules this part specifies normative naming rules for multiple instances and private extensions of Logical Node (LN) Classes and Data Names. In Annex A, all rules are given (making use of examples) for multiple instances of logical node classes by use of a LN instance identification (ID); multiple instances of data by use of a data instance ID; selecting data not included in LN out of the complete data name set and creating new logical node classes and data names. In Annex B, examples are given for the use of Logical Nodes in complex situations like line protection schemes and multiple instances of Logical Nodes with different levels of functionality.