Testing The Synchrocheck Functionality - ABB RER670 Commissioning Manual

1MRK 506 377-UEN C
10.9.1.2
Railway application RER670 2.2 IEC
Commissioning manual
Testing functionality by secondary injection
Testing the frequency difference
The frequency difference test should verify that operation is achieved when the
frequency difference between bus and line is less than set value of FreqDiffMax
and above set value of FreqDiffMin. The test procedure below will depend on the
settings used. Input STARTSYN must be activated during the test.
FreqDiffMax = 0.2 Hz
FreqDiffMin = 0.01 Hz
tBreaker = 0.080 s
1. Apply voltages
1.1. U-Line = 100% UBaseLine and f-Line = 16.7 Hz
1.2. U-Bus = 100% UBaseBus and f-Bus = 16.85 Hz
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 = 16.95 Hz, to verify that the
function does not operate when frequency difference is above limit.
4. Verify that the closing command is not issued as the frequency difference is
not within the limits.

Testing the synchrocheck functionality

During the test of SESRSYN for a single bay arrangement, these voltage inputs are
used:
U-Line UL1 or UL2 line 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.
– f ) * tBreaker * 360 degrees) |
Bus Line
Section 10
M2377-116 v11
M2377-132 v9
M2377-194 v8
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