GE C30 Instruction Manual page 176

PRODUCT SETUP
UR Setup requires data set members to be IEC 61850 data attributes. Certain FlexLogic and FlexAnalog operands have
factory assigned data attributes as tabulated in the UR Series Communications Guide. All FlexLogic and FlexAnalog
operands can be user-assigned to GGIO1 or GGIO4 data attributes, so that operands without factory assigned data
attributes can still have their values published. See the GGIO1 and GGIO4 sections later for details.
Navigate to Settings > Product Setup > Communications > IEC 61850 > DataSets > DataSet01 to access the settings for
the first data set. The settings and functionality for the others are similar.
DataSet01 name
Range: 0 to 32 VisibleString characters
Default: DataSet01
The value entered sets the name of the data set, which is required to be unique within the UR for proper operation. An
ObjectReference to the data set consists of a string that is the concatenation of "<LDName>/LLN0$" and the DataSet01
name setting value. An ObjectReference to the data set is published in the datSet field of TxGOOSE messages, and it can
be used by subscribers to discriminate the messages of that TxGOOSE from other GOOSE messages. An ObjectReference
to the data set is optionally published in the DatSet field of Report messages. Valid characters are upper and lowercase
letters, digits, and the underscore (_) character. The first character must be a letter.
DataSet01 Member1
Range: End of List or any instantiated 61850 data object or data attribute with Functional Constraint ST or MX
Default: End of List
This setting specifies the first member in TxGOOSE1 messages. There is a similar setting for each of the up to 64
members that the UR allows in a Dataset. Only values of members before the first set to End of List are published.
Deadband settings
The IEC 61850 panels contain hundreds of deadband settings, such as in the following panels: System Setup > Signal
5
Sources, FlexLogic, Grouped Elements, Control Elements, and GGIO4. Each panel is not outlined here.
Deadband setting names all end either with "DEADBAND" or .db. As they all work the same way, but each on a different
analog value, a single description applicable to all deadband settings is given here. The analog value that each deadband
setting applies to is usually obvious from the name of the setting. However, a tabulation of the analog values and their
associated deadband setting can be found in the UR Series Communications Guide.
GOOSE, buffered report, and unbuffered report messages are for the most part transmitted only when there is a value
change in one or more of their members. Most analog values continuously dither by an amount that is not significant.
Were a report to be sent each time an insignificant analog value change occurred, then the communications network
floods with GOOSE and report messages, degrading response time for all users.
To control this, a deadband setting is provided for each analog value. Also, in addition to the present actual value of each
analog ("instMag" in the following figure), there is a deadbanded value ("mag" in the figure), which is updated with the
present value only when the difference between the two exceeds the deadband setting (db in the figure). Changes to this
deadbanded value trigger transmissions when included in GOOSE and report data sets.
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Figure 5-20: Deadband settings with .db suffix
CHAPTER 5: SETTINGS
C30 CONTROLLER SYSTEM – INSTRUCTION MANUAL