Siemens SIMEAS R-PMU Manual page 62

7
7.1 Phasor Measurement Unit (PMU)
Table 7-7
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
PMU data communication via RS232
The COM 1 port at the rear panel has been provided for the connection of a PDC with RS232 or,
alternatively, with a modem/null modem.
Note
If the PMU functionality of the SIMEAS R-PMU is used via a modem or null modem connection,
another connection to the SIMEAS R-PMU is required for the access to the remaining device
functions using OSCOP P. Only the LAN interface enables the simultaneous transmission of
PMU data and the communication via OSCOP P.
Table 7-8 provides an overview of the data volume of the SIMEAS R-PMU depending on the
device configuration and the reporting rate for RS232 communication.
The data rates possible for modem communication restrict the reporting rates to be set. Optimum
conditions allow up to 33 kbit/s. Depending on quality of the telephone network extremely lower
data rates can be expected. During parameterization, OSCOP P calculates the expected data
rate and generates corresponding warning messages. If the configuration parameterized by the
user leads to data rates higher than 9 kbit/s, a message is given that PMU data may be lost. For
data rates higher than 32 kbit/s a message is given that data will be lost.
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TCP transmission via LAN:
Data transfer rate depending on the configuration and reporting rate in kbit/s,
data format 32 bit float
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
Reporting rate (Hz)
10 12 15 20 25
7 8 10 13 16
10 12 15 21 26
9 11 13 18 22
16 20 24 33 41
13 16 20 26 33
28 34 42 56 70
8 9 12 16 20
11 14 17 23 28
5 7 8 11 14
16 19 23 31 39
21 25 31 42 52
Digital Fault Recorder, SIMEAS R-PMU, Manual
E50417-H1076-C360-A5, Release 10.2012
30 50 60
20 33 39
31 52 62
26 44 53
49 81 98
39 66 79
84 141 169
23 39 47
34 56 68
16 27 33
47 78 94
62 104 125