ABB Relion 670 Series REL670 Commissioning Manual page 204

Section 10
Testing functionality by secondary injection
198
Testing the phase angle difference
The phase angle differences PhaseDiffM and PhaseDiffA respectively are set to their
final settings and the test should verify that operation is achieved when the phase angle
difference is lower than this value both leading and lagging.
Test with no voltage difference.
1. Apply voltages U-Line (for example) = 100% GblBaseSelLine and U-Bus =
100% GblBaseSelBus, with a phase difference equal to 0 degrees and a
frequency difference lower than FreqDiffA and FreqDiffM.
2. Check that the AUTOSYOK and MANSYOK outputs are activated.
The test can be repeated with other phase difference values to verify that the
function operates for values lower than the set ones, PhaseDiffM and
PhaseDiffA. By changing the phase angle on the voltage connected to U-Bus,
between ± dφ degrees, the user can check that the two outputs are activated for
a phase difference lower than the set value. It should not operate for other values.
See figure 42.
No operation
IEC05000551 V1 EN
Figure 42: Test of phase difference
3. Change the phase angle between +dφ and -dφ and verify that the two outputs are
activated for phase differences between these values but not for phase
differences outside, see figure 42.
Testing the frequency difference
The frequency difference test should verify that operation is achieved when the
FreqDiffA and FreqDiffM frequency difference is lower than the set value for manual
and auto synchronizing check, FreqDiffA and FreqDiffM respectively and that
operation is blocked when the frequency difference is greater.
Test with frequency difference = 0 mHz
Test with a frequency difference outside the set limits for manual and auto
synchronizing check respectively.
U-Bus
+dj
U-Line operation
-dj
U-Bus
en05000551.vsd
Line distance protection REL670 2.1 IEC
1MRK 506 355-UEN A
Commissioning manual