Testing The Synchrocheck Check - ABB Relion REG650 Commissioning Manual

Section 7
Testing functionality
Testing the frequency difference
The frequency difference is in the example set at 0.20 Hz on the local HMI, and the test should
verify that operation is achieved when the
Hz. The test procedure below will depend on the settings used.
1. Apply voltages
1.1.
1.2.
2. Check that a closing pulse is submitted and at closing angle less than 2 degrees from
phase equality. Modern test sets will evaluate this automatically.
3. Repeat with
3.1.
3.2.
4. Repeat with different frequency differences for example, 100 mHz with f-bus nominal and
line leading and for example 20 mHz (or just above
independent of frequency difference the closing pulse occurs within 2 degrees.
5. Verify that the closing command is not issued when the frequency difference is less than
the set value
7.9.1.2

Testing the synchrocheck check

During the test of SESRSYN for a single bay arrangement, these voltage inputs are used:
U-Line
U-Bus
Testing the voltage difference
Set the voltage difference at 15%
operation is achieved when the voltage difference
The settings used in the test shall be final settings. The test shall be adapted to site setting
values instead of values in the example below.
Test with no voltage difference between the inputs.
Test with a voltage difference higher than the set
1. Apply voltages U-Line (for example) = 80%
2. Check that the AUTOSYOK and MANSYOK outputs are activated.
3. The test can be repeated with different voltage values to verify that the function
operates within the set
than the other.
4. Increase the U-Bus to 110%
condition.
5. Check that the two outputs for manual and auto synchronism are not activated.
Testing the phase angle difference
The phase angle differences
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
78
UBase and f-line = 50.0 Hz
U-Line = 100%
UBase and f-bus = 50.2 Hz
U-Bus = 100%
UBase and f-bus = 50.25 Hz
U-Bus = 100%
Verify that the function does not operate when frequency difference is above limit.
FreqDiffMin .
UL1, UL2 or UL3 voltage input on the IED
Bus voltage input on the IED
UBase on the local HMI, and the test should check that
UDiffSC . Check with both U-Line and U-Bus respectively lower
UBase , and the U-Line = 90% UBase and also the opposite
PhaseDiffM and PhaseDiffA respectively are set to their final
© Copyright 2011 ABB. All rights reserved
FreqDiffMax frequency difference is lower than 0.20
FreqDiffMin ) to verify that
UDiffSC is lower than 15% UBase .
UDiffSC
UBase and U-Bus = 80% UBase .
1MRK 502 035-UEN A
M2377-116 v5
M2377-132 v5
M2377-194 v4
M2377-215 v4
Generator protection REG650
Commissioning manual