F.8
SEL-787 Relay
Instruction Manual
Date Code 20081022
IEC 61850 Communications
IEC 61850 Operation
Datasets
The list of datasets in
is the default for an SEL-787 device.
Figure F.2
SEL-787 Datasets
Within
AC
SEL
ERATOR
Architect software, IEC 61850 datasets have two main
purposes:
➤
GOOSE: You can use predefined or edited datasets, or create
new datasets for outgoing GOOSE transmission.
➤
Reports: Twelve predefined datasets (DSet01 to DSet12)
correspond to the default six buffered and six unbuffered
reports. Note that you cannot change the number (12) or type of
reports (buffered or unbuffered) within
AC
SEL
ERATOR
Architect software. However, you can alter the data attributes
that a dataset contains and so define what data an IEC 61850
client receives with a report. The last dataset, DSet13, is a list
of the Breaker Status and Control Data Attributes that are in the
SEL-787.
Supplemental
Software
Examine the data structure and value of the supported IEC 61850 LNs with an
MMS browser such as MMS Object Explorer and AX-S4 MMS from Sisco,
Inc.
The settings needed to browse an SEL-787 with an MMS browser are shown
below:
Time Stamps and
Quality
In addition to the various data values, the two attributes quality and t (time
stamp) are available at any time. The time stamp is determined when data or
quality change is detected.
The timestamp is applied to all data and quality attributes (Boolean, Bstrings,
Analogs, etc.) in the same fashion when a data or quality change is detected.
However, there is a difference in how the change is detected between the
different attribute types. For points that are assigned as SER points, i.e.,
NOTE:
Do not edit the dataset
names used in reports. Changing or
deleting any of those dataset names
will cause a failure in generating the
corresponding report.
OSI-PSEL (Presentation Selector)
00000001
OSI-SSEL (Session Selector)
0001
OSI-TSEL (Transport Selector)
0001
Summary of Contents for SEL-787
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