17.14
SEL-400 Series Relays Instruction Manual Date Code 20171006
IEC 61850 Communication
IEC 61850 Operation
GOOSE Processing
SEL devices support GOOSE processing as defined by IEC 61850-7-1:2011(E),
IEC 61850-7-2:2010(E), and IEC 61850-8-1:2011(E) via the installed Ethernet port.
Outgoing GOOSE messages are processed in accordance with the following con-
straints.
➤ The user can define as many as eight datasets for outgoing GOOSE
messages consisting of any data attribute (DA) from any logical
node. A single DA can be mapped to one or more outgoing GOOSE
datasets, or one or more times within the same outgoing GOOSE
dataset. A user can also map a single GOOSE dataset to multiple
GOOSE control blocks. The number of unique Boolean variables is
limited to a combined total of 512 digital bits across all eight
outgoing messages.
➤ High-speed GOOSE messaging (as defined under GOOSE
Performance) is available for GOOSE messages that contain either
all Boolean data or a combination of Boolean data and remote analog
output (RAO01–RAO64) data.
➤ The relay will transmit all configured GOOSE immediately upon
successful initialization. If a GOOSE message is not retriggered, then
following the initial transmission, the relay shall retransmit that
GOOSE based on the Min. Time and Max. Time configured for that
GOOSE message. The first transmission shall occur immediately
upon triggering of an element within the GOOSE dataset. The second
transmission shall occur Min. Time later. The third shall occur Min.
Time after the second. The fourth shall occur twice Min. Time after
the third. All subsequent transmissions shall occur at the Max Time
interval. For example, a message with a Min. Time of 4 ms and Max.
Time of 1000 ms, will be transmitted upon triggering, then
retransmitted at intervals of 4 ms, 4 ms, 8 ms, and then at 1000 ms
indefinitely or until another change triggers a new GOOSE message
(See IEC 61850-8-1, Sec. 18.1).
➤ Each outgoing GOOSE includes communications parameters
(VLAN, Priority, and Multicast Address) and is transmitted entirely
in a single network frame.
➤ The relay will maintain the configuration of outgoing GOOSE
through a power cycle and device reset.
Incoming GOOSE messages are processed in accordance with the following con-
straints.
➤ The user can configure the relay to subscribe to as many as 128
incoming GOOSE messages.
➤ Control bits in the relay get data from incoming GOOSE messages
which are mapped to Virtual Bits (VBnnn). Virtual bits are volatile
and are reset to zero when a new CID file is loaded, the device is
restarted, or they are overwritten by data from a subscribed GOOSE
message.
➤ The relay will recognize incoming GOOSE messages as valid based
on the following content:
➢ Source broadcast MAC address
➢ Dataset Reference
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