7
7.1 Phasor Measurement Unit (PMU)
63Digital Fault Recorder, SIMEAS R-PMU, Manual
E50417-H1076-C360-A5, Release 10.2012
Measures to reduce the data rate.
− Decreasing the reporting rate
− Transfer of 16 bit integer data instead of 32 bit floating point data
− Transfer of positive sequence system data instead of phasors
− Deactivating one DAU for PMU measurements
Table 7-8 Serial or modem transmission:
Data transfer rate depending on the configuration and reporting rate in kbit/s,
data format 16 bit integer
Configuration Type Reporting rate (Hz)
10 12 15 20 25 30 50 60
1 AC DAU Positive-sequence system 3 4 5 6 8 9 15 18
1 AC DAU Phasors 5 6 7 10 12 15 25 30
2 AC DAUs Positive-sequence system 4 5 6 9 11 13 21 26
2 AC DAUs Phasors 8 10 12 16 20 24 40 48
4 AC DAUs Positive-sequence system 7 8 10 14 17 20 34 41
4 AC DAUs Phasors 14 17 21 29 36 43 71 86
1 DDAU Process values 4 4 6 7 9 11 18 22
2 DDAUs Process values 6 7 8 11 14 17 28 33
1 BDAU Binary values 3 3 4 5 6 8 13 15
2 AC DAUs
2 DDAUs
Positive-sequence system/
process values
9 11 14 19 23 28 46 56
2 AC-DAUs
1 DDAU
1 BDAU
Phasors /
process values /
binary values
11 13 16 21 27 32 54 64
Note
The 32 bit floating point data format is not supported for the PMU data communication via
RS232.
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