ABB Relion 670 series, Руководство по вводу в эксплуатацию, Страница: 101 / 188

Testing the phase preference mode in compensated earthed systems
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1. Inject phase voltage and phase current for phase L2 in accordance with test points described in
Chapter 'Phase-to-earth fault – measuring element'.
2. If ModePhPref is set to Equal priority, trip signal TRL2 will be appeared immediately after a set
delay of tPEZx .
3. If ModePhPref is set to L1 before L2, STPHPRERL2 will appear which indicates fault has been
occurred in phase L2.
4. If the fault persists for a duration of tPEZx + tGL2 , TRL2, and TRPHPRL2 will appear or fault
persists for a duration of additional timer txL2 plus extension time tVL2 (i.e. txL2 + tVL2 ), TRL2
will appear.
5. If during time tVL2 , make a test point such that start signal STELEMST resets and also
magnitude of phase L1 is below U0Min value, the output signals STPHPRERL2, TRPHPRL2,
and TRL2 will reset indicating that fault on phase L2 is cleared.
6. If during time tVL2 , inject voltages in phases such that change in phase L1 voltage is lower
than set duOverdt value and change in phase L2 voltage is higher than set dUOverdt value, the
output signals STPHPRERL2,TRPHPRL2, and TRL2 will reset indicating that fault on phase L2
is cleared.
10.4.3 Completing the test
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Continue to test another function or end the test by changing the Test mode setting to Off . Restore
connections and settings to their original values, if they were changed for testing purposes.
10.4.4 Catenary distance protection ZRCPDIS
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Prepare the IED for verification of settings outlined in Section "Preparing the IED to verify settings" .
Values of the logical signals for ZRCPDIS are available on the local HMI under Main menu /Test/
Function status /Impedance protection/DistanceProt1Ph(21,Z<) /ZRCPDIS(21;Z<):x , where x =
1 or 2.
The Signal Monitoring tool in PCM600 shows the same signals that are available on the local HMI.
10.4.4.1 Function revision history
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Document
revision Product
revision History
C 2.2.2 Added ZRCPDIS function
D 2.2.3 Seal-in voltage level is increased to 10.0% UB and internal time delay of one
fundamental power cycle for seal-in detection is added for stable direction detection and
trip indication even with low voltage conditions during fault. Operating time improvement
for faults occurrence around 90.0% to 95% of set reach for all measuring zones. No
maloperation from instantaneous measuring zones at CB opening.
E 2.2.3 -
F 2.2.4 -
G 2.2.4 -
H 2.2.5 -
10.4.4.2 Verifying the signals and settings
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Measure the operating characteristics during constant current conditions. Keep the measured current
as close as possible to the rated value of the IED or lower. Ensure that it is higher than the set
minimum operating current.
1MRK 506 377-UEN Rev. K Section 10
Testing functionality by secondary injection
Railway application RER670 95
Commissioning manual
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