Launching Injection Commissioning Tool (Ict) - ABB REG670 2.0 IEC Commissioning Manual

1MRK502053-UEN B
6.3
Generator protection REG670 2.0 IEC
Commissioning manual
Calibrating injection based sensitive rotor earth fault protection
After the three measurements ICT calculates the complex factors k1 and k2. The
reference impedance RefR1 + jRefX1 is also calculated. After this the values are
downloaded to the parameter setting in PCM600. From PCM600 the settings are
downloaded to IED.
During the three measurements described above a check is made that there are
sufficient changes in the measured impedance in order to guarantee that there is no
primary fault from the beginning or other problems due to the installation or
calibration procedure.
Now the reference impedance is derived for one operational state. It might be
necessary to make measurements to derive reference impedance for other operational
cases. For information on this, see Commissioning below.
Commissioning
There is a possibility to have two different reference impedances. The need to change
the reference impedance is due to different operating conditions of the machine.
In the commissioning part of ICT this can be done. For each operation state of interest
a measurement is performed. If the reference impedance differs from the first one,
calculated under the calibration session, the new reference impedance is stored by the
command; Submit toParameter Setting.
If more than one reference impedance are to be used, there must be a logic configured
to detect such changes in the operation states that requires a change of reference
impedance.
Monitoring
In the monitoring part the calibration can be checked by applying the known fault
resistance and compare it with the actual function measurement. It is also possible to
identify operational states where change of reference impedance is required.
Auditing
In the auditing part calibration and commissioning reports are made.

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 Rotor Earth Fault function.
Section 6
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