Generic Substation Events (GSE) is a control model defined as per IEC 61850 which provides a fast and reliable mechanism of transferring event data over entire electrical substation networks.
When implemented, this model ensures the same event message is received by multiple physical devices using multicast or broadcast services.
Generic Object Oriented Substation Events (GOOSE) is a controlled model mechanism in which any format of data (status, value) is grouped into a data set and transmitted within a time period of 4 milliseconds.
As the GSSE format is simpler than GOOSE it is handled faster in some devices.
[2] Equipment manufacturers have started to offer non-standard protocols to report events over substation networks, citing advantages to these approaches.