ABB Relion 670 Series Commissioning Manual page 215

1MRK 506 371-UUS E
V3PL1
V3PBB1
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
FreqDiffMin . The test procedure below will depend on the settings used. Input STARTSYN must be
activated during the test.
FreqDiffMax = 50.2 Hz
FreqDiffMin = 50.01 Hz
tBreaker = 0.080 s
1. Apply voltages
1.1.
1.2.
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
f
Line
tBreaker = Set closing time of the breaker
3. Repeat with
3.1.
4. Verify that the closing command is not issued when the frequency difference is less than the
set value
11.10.1.2 Testing the synchrocheck functionality
During the test of SESRSYN (25) for a single bay arrangement, these voltage inputs are used:
V-Line
V-Bus
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
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
Line distance protection REL670
Commissioning manual
VA, VB or VC line 1 voltage inputs on the IED
Bus1 voltage input on the IED
VBaseLine and f-Line = 60.0 Hz
V-Line = 100%
VBaseBus and f-Bus = 60.15Hz
V-Bus = 100%
– f
Bus Line
= Bus frequency
= Line frequency
V-Bus = 100% VBaseBus and f-bus = 60.25 Hz, to verify that the function does not trip
when frequency difference is above limit.
FreqDiffMin .
VA, VB or VC line 1 voltage input on the IED according to the connection in SMT
V5 voltage input on the IED according to the connection in SMT
© Copyright 2017 ABB. All rights reserved
FreqDiffMax and above set value of
) * tBreaker * 360 degrees) |
VDiffSC is lower than 0.15 p.u.
VDiffSC .
Testing functionality by secondary injection
Section 11
M2377-116 v11
M2377-132 v9
M2377-194 v8
209