GOOSE Review and Documentation: The extensive use of generic object oriented system events (GOOSE messages) on the substation Ethernet bus is a challenge for documentation as much function related information is removed from the classical wiring diagrams and instead included in the SCL files. This in turn requires both new tools and skills at suppliers and at Vattenfall. In Helinks GOOSE messages can be graphically displayed in Applications that are accessed from the tools single line diagram. To ease understanding of the functional content of messages Vattenfall signal names are presented instead of IEC 61850 data objects names in the application views graphical representation. The user can also see the corresponding IEC 61850 data objects in tables.
Due to extensive use of GGIOs and the supplier’s decision to have only one GOOSE message per IED an Excel spreadsheet was required to indicate utility signal name and associated function for each GOOSE data set entry. To mitigate the need for a specific GOOSE matrix in Excel Vattenfall will in future require each GOOSE message to be for only one application. This will mean more GOOSE messages and also multiple GOOSE messages with the same content. The additional load caused by such an approach has been discussed. Network load measurements during site acceptance testing load simulations commissioned from a University revealed little concern for a more application oriented GOOSE configuration for normal substations.