GE N60 Instruction Manual page 225

5 SETTINGS
All bitstrings less than or equal to 32 bits in length map into a 32 bit bitstring in an IEC 61850-90-5 dataset.
The Value of the Nominal Frequency of the chassis is instantiated as a DO in LPHD of LD1. The value is named
NOTE
HzNom and is an Integer Status (INS).
The UR also supports the option to apply no filtering to the synchrophasors. If no filtering is applied (PMU Class = None),
according to the standard the ClcMth attribute will be PRES. The semantic of the ClcMth used is not carried in the individual
DO and so it is recommended that one of letters of the prefix on the instantiated LNs be set to "P" or "M" accordingly in
order to differentiate. For version 7.0 only FCDA data is supported. The Implementation by Model Number table, see
above, describes the maximum size of each PMU data set for version 7.0 using FCDA data (non-structured data).
EXAMPLE: PROTECTION SYNCHROPHASORS DATA SET WITH REPORTING RATE 60 FRAMES/SECOND
This example gives the protection synchrophasors data set with a reporting rate of 60 frames per second (P60MMXU1).
See figure above, Logical Nodes Supported in Each Logical Device. This data or list of items, see figure below, is not avail-
able to the UR setup program but is available to be mapped by the user into a selected aggregator or aggregators dataset.
The logical device name – LDName - of each PMU LD will be a 64 character user setting. The C37.118 STN and IDCode is
to be mapped as a concatenated value in the (d)escription field of LPL CDC of the NamPlt DO in LLN0. The mapping is
implemented as STN-IDCode(text string).
From each PMU the user selects the phasor information of interest that is mapped into the selected aggregator datset(s).
For version 7.0 only FCDA data is supported.
Figure 5–33: DATA SET CREATED FROM USER SELECTED INTERNAL ITEMS
GE Multilin N60 Network Stability and Synchrophasor Measurement System
5.4 SYSTEM SETUP
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