Testing The Synchrocheck Functionality - ABB RELION REC650 Commissioning Manual

1MRK 511 425-UEN A
9.5.1.2
Bay control REC650 2.2 IEC
Commissioning manual
Testing functionality by secondary injection
tBreaker = 0.080 s
1. Apply voltages
1.1. U-Line = 100% UBaseLine and f-Line = 50.0 Hz
1.2. U-Bus = 100% UBaseBus and f-Bus = 50.15Hz
2. Check that a closing pulse is submitted at a closing angle equal to calculated
phase angle value from the formula below. Modern test sets will evaluate this
automatically.
Closing Angle = |( (f
f = Bus frequency
Bus
f = Line frequency
Line
tBreaker = Set closing time of the breaker
3. Repeat with
3.1. U-Bus = 100% UBaseBus and f-bus = 50.25 Hz, to verify that the
function does not operate when frequency difference is above limit.
4. Verify that the closing command is not issued when the frequency difference
is less than the set value FreqDiffMin.

Testing the synchrocheck functionality

During the test of SESRSYN for a single bay arrangement, these voltage inputs are
used:
U-Line UL1, UL2 or UL3 line 1 voltage input on the IED according to the connection in SMT
U-Bus Bus voltage input on the IED according to the connection in SMT
Testing the voltage difference
Set the voltage difference to 0.15 p.u. on the local HMI, and the test should check
that operation is achieved when the voltage difference UDiffSC is lower than 0.15
p.u.
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 UDiffSC.
– f ) * tBreaker * 360 degrees) |
Bus Line
Section 9
M2377-132 v9
M2377-194 v8
79