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Logical Device
Category
"System"
Data Model
System
DataSet "GOOSEDS"
GGIO1 Ind1..16
LLN0
GoCB
The DataSet "GOOSEDS" is fixed
LPHD1
GGIO
Data set
Fixed (Not configurable)
Performance GOOSE data sent communication time
is < 3msec
System
(iii)
The data model in the LN named "System" is not allowed to modify (that is, a data model is
fixed; other LN data models are configurable to meet the system requirement). Mapping
signals to the GGIO1 is required when the GOOSE should send data faster.
Control mode using GOOSE
(iv)
In the IED, signals generated on the binary output circuit (BO) can be controlled by the SAS,
if the user makes the link between a reviving control message and a control function block that
changes the state of the output element. Four control modes are provided:
DOes:
SBOns:
DOes:
SBOes:
Time synchronization using IEC 61850 protocol / SNTP
(v)
SNTP (Simple network time protocol) is used to synchronize clocks of all IEDs in SAS. Time
synchronization is required to maintain common time across all IEDs in the network. This
makes it easier to analyze the Time stamped event data generated by the IEDs in chronological
order. In the system, IEDs are synchronized with the device having precision time source (for
example, GPS).
File transfer (COMTRADE)
(vi)
To send data of the disturbance records, file transfer service is used, which is the operated in
COMTRADE format.
Table 11.3-4 Data structures in the GOOSE
Direct control with normal security (direct-operate)
SBO control with normal security (operate-once or operate-many)
Direct control with enhanced security (direct-operate)
SBO control with enhanced security (operate-once or operate-many)
- 881 -
Other Logical device (e.g., "Relay")
Relay
LLN0
GoCB
LPHD1
PTRC
....
Configurable
GOOSE data sent, communication
time is around 10msec
6F2T0207 (0.01)
GRE200 (5,6)
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