Launching Injection Commissioning Tool (Ict) - ABB REG670 Commissioning Manual

Section 7
Calibrating injection based 100% stator earth fault protection
7.3
78
Monitoring
The Monitoring tab of ICT offers the possibility to monitor several quantities
during tests as well as in normal operating condition in order to evaluate the
behavior of the protection function. It can help in the identification of the operating
conditions, where change of reference impedance is required.
Auditing
In the auditing part installation, calibration and commissioning reports are stored.

Launching injection commissioning tool (ICT)

1. To launch the Injection commissioning tool (ICT), right-click REG670 in the
PCM plant structure and select the Injection commissioning.
2. In the ICT toolbar, select the 100% Stator Earth Fault function.
GUID-3C378090-E33E-4AAA-8BBE-09FA872D9A87 V1 EN-US
Figure 19: ICT toolbar
3. Select the Installing tab if it was not already selected by default after the ICT
was launched.
The first thing that needs to be ensured prior to calibration is that the
measured voltage and current signal on the injected frequency is present/
found, and that the amplitude of these is within the permitted limits.
4. Make sure you have not connected any additional impedance in parallel with
the stator circuit. All wirings shall be finalized and they shall be the definitive
ones. All primary and secondary devices shall be connected and switched on.
All grounding of generator shall be removed. The generator shall be in a
condition that is as close as possible to the normal operating condition.
5. Activate the injection by turning the injection switch to on position on the
injection unit REX060.
6. Write the value "UMaxEF" according to the setting in REX060. Select the
Start reading values from IED button from the ICT toolbar to start
performing continuous measurements.
7. Verify that the bars/voltage levels for both the voltage and current on the
injected frequency have acceptable level.
The bars must be green and the function status field must also indicate OK.
8. Check that the actual injected frequency is close enough to the injection
frequency set on the injection unit (REX060).
If the voltage and/or current level(s)/frequencies are not reasonable, or the
ICT indicates other warnings/abnormalities in the function status field, verify
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Button for
Function selection
enable/disable
dropdown menu
tripping
1MRK 502 073-UEN A
GUID-7CDFB043-26E1-4169-9D2C-BE7C5C08AEAE v2
Buttons for start/stop
reading from IED
IEC11000043-1-en.vsd
Commissioning manual