•
Technical key is used in engineering drawings and for signal identifications. This
is contained in the attribute name as an identification of each object. If the value
is used as a reference to an object, it is contained in an attribute name starting with
a string denoting the reference target object type and ending with the string
Name
. The technical key is used within SCL for referencing to other objects. The
name is a relative identification within a hierarchy of objects. The maximum
characters allowed for a technical key is 28 for IEC 61850 Edition 1 and 60 for
Edition 2 projects.
•
User-oriented textual designation is contained in the
desc
attribute. Attributes are
not allowed to contain carriage return, line feed, tab, greater than, less than,
double quotes or ampersand characters. The semantics of
desc
must also be
relative within an object hierarchy. The maximum length is 100.
PCM600 takes care of these two possibilities. The two possible signal designations are
available per object in the Object Properties for all the hierarchical levels beginning
with the station as the highest level.
The technical key is automatically generated based on the rules and type
specifications of IEC 61346 and the extended definitions assigned for substations by
a technical committee. The technical key is shown in the Object Properties dialog box
under SCL Technical Key or Technical Key.
•
The station is predefined by “AA1" where 1 is the index. To get the real station
name that is used, it is possible to rename the SCL Technical Key for the station
as the name used by the project. To minimize the word length, a short form should
be used, because this name is used also in the transmitted messages to identify the
events, for example.
•
The voltage level. In the example it is 20 kV and J1 is selected from the list below
SCL Technical Key in the Object Properties dialog box.
•
The bay and the IED are appended with the coding defined in the IEC 61346
standard and the substation definition lists. In the example, the Bay SCL
Technical Key part is Q03 and IED is A1.
The user-oriented textual designation is visible in the Plant structure view for each
object. It is the name given by default or changed by using the Rename function.
1MRS757810 C
Section 3
PCM600 tool
REC615 and RER615
29
Engineering Manual
