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