ABB Relion 630 Series Communication Protocol Manual page 41

1MRS756793 E
630 series
Communication Protocol Manual
The GOOSE message concept is used for all application functions where two or more
IEDs are involved. Typical example is the station-wide interlocking procedure or
breaker failure protection.
Figure Figure 10 shows the GOOSE concept for three IEDs which interchange
GOOSE messages between each other.
To send GOOSE messages a GoCB must be defined and a data set is needed that
contains the data objects of single data attributes to be sent.
A GOOSE message is forced to be transmitted when a trigger change is detected for
a data attribute. All members of the data set are copied in the send buffer with their
actual value and the message is sent. The subscribers, who knows the address of this
GOOSE message, receives the telegram. The GOOSE message includes a sequence
number to verify that all messages are received.
The concept that has to be done in case of for example a lost message is part of the
application and not described in the standard.
A GoCB has to be defined per GOOSE data set.
GOOSE messages bypass the server and send direct from the communication part on
the Ethernet. This is identified for the communication in the SCL communication
section in the GSE element, where the name of the GoCB is listed under the
ConnectedAP.
Link GoCB to an IED
The IEDs that should receive the GOOSE message must be known and they have to
be informed in the engineering state that they receive GOOSE messages and which
one. This is given when the external Reference, the name of the IED and the member
of the data set is included in the LN0 under the structure of the LD of the receiving
IED. This part is identified as "Inputs".
Data sets and control blocks
Section 6
35