7.8 Configure Ports – C37.118 Synchrophasor Protocol
61
1. Click Ethernet on the left panel of the form.
2. Check the port parameters, including protocol and port number. The available choices for
protocol are UDP, TCP or Disabled.
3. On the left side of the Configure Ports form, select either PMU-1 or PMU-2.
4. Figure 7.10 shows PMU-1 selected. Start configuring at the top.
5. Make sure to select ON for “Active.” Otherwise, you will not see any data.
6. Give a name for “Station”, such as “1133A PMU-1”.
7. For Station ID (IDCODE) give a unique number to the 1133A, from 1 to 65535. This is the
actual code that identifies this specific equipment. No two devices may share this number on
the same network.
8. Though not required, you can type in some additional information in the “Header” field to
further explain this particular equipment, location, situation, etc.
9. Under “Input,” enable all of the data types that you wish to see in the output; include
“Analog” values as well. Set these values to either ON or OFF.
10. “Window Length” is an important setting, as it will control the stability of the reading. If
you select a small value (e.g. 1) the readings may tend to jump around and appear unstable.
11. Set “Estimated Rate” to tell the 1133A to send the desired number of phasors samples per
second. It is set to 20. In all cases, the rate is always a whole number factor of the nominal
frequency.
12. “Cycles Used” (calculated by PSCSV) is a product of the “Estimated Rate” times the
“Window Length”. Figure 7.10 this gives this value as follows: 20
×
6 = 120.
13. Choose the data format as either 32-bit floating point or 16-bit fixed point.
14. Choose “Adaptive Tuning” if needed to
±
2
Hz,
±
5
Hz or
±
10
Hz
. Otherwise leave OFF.
15. Set the Estimator Algorithm according to the desired window filtering features of each filter
type. See Window Functions on the previous pages for more information. To view the actual
filter bandwidth, use the Window Function graphical software tool to plot out the specific
Estimator Algorithm.
7.8.5
Audible Frequency Alert, from Phasor Display
PSCSV allows you to set an audible frequency alert while watching the frequency plot from the
phasor display. Thus, when the frequency deviates from the conditions set up in this feature,
PSCSV will play a WAV sound file of choice for a selectable period of time. The time period is in
seconds from zero to one year. Figure 7.13 shows both the Frequency Plot display with the Alerts
setup window. To set up a frequency alert, first select Frequency Plot during a Phasor Broadcast.
Next, from the menu choose View
>
Alerts and configure alert variables.
Alert Definitions
◦
Enable Alerts:
Check this box to enable the frequency alarm sound; uncheck to disable the
frequency sound alarm.
◦
Condition:
Set these values to configure the alarm conditions; choose either Frequency
Deviation or
|
Frequency Deviation
|
.
|
Frequency Deviation
|
is the absolute value of of
Frequency Deviation, and may be used to set up a window comparison. Choose from four
logic conditions:
>
=
, <
=
, >, or <
. Frequency Deviation condition range is between -10.00
