ABB Relion 670 Series Commissioning Manual page 206

Section 11
Testing functionality by secondary injection
1. Simulate normal operating conditions with the three-phase currents in phase with their
corresponding phase voltages and with all of them equal to their rated values.
2. Connect the nominal dc voltage to the 89bS binary input.
•
•
•
•
3. Disconnect the dc voltage from the 89b binary input terminal.
4. Connect the nominal dc voltage to the MCBOP binary input.
•
•
5. Disconnect the dc voltage from the MCBOP binary input terminal.
6. Disconnect one of the phase voltages and observe the logical output signals on the binary
outputs of the IED.
BLKV and BLKZ signals should appear simultaneously wether the BLKV and BLKZ reset
depends on the setting
7. After more than 5 seconds disconnect the remaining two-phase voltages and all three
currents.
•
•
8. Establish normal voltage and current operating conditions simultaneously and observe the
corresponding output signals.
They should change to logical 0 as follows:
•
•
•
11.9.2.2 Measuring the trip value for the negative sequence function
Measure the trip value for the negative sequence function, if included in the IED.
1. Simulate normal operating conditions with the three-phase currents in phase with their
corresponding phase voltages and with all of them equal to their rated values.
2. Slowly decrease the measured voltage in one phase until the BLKV signal appears.
3. Record the measured voltage and calculate the corresponding negative-sequence voltage
according to the equation (observe that the voltages in the equation are phasors):
×
3
EQUATION1818-ANSI V1 EN-US
Where:
V V
EQUATION1820-ANSI V1 EN-US
a
IECEQUATION00022 V2 EN-US
200
The signal BLKV should appear with almost no time delay.
The signals BLKZ and 3PH should not appear on the IED.
Only the distance protection function can trip.
Undervoltage-dependent functions must not trip.
The BLKVand BLKZ signals should appear without any time delay.
All undervoltage-dependent functions must be blocked.
SealIn "on" or "off". If "on" no reset, if "off" reset.
There should be no change in the high status of the output signals BLKV and BLKZ.
The signal 3PH will appear.
Signal 3PH after about 25ms
Signal BLKV after about 50ms
Signal BLKZ after about 200ms
2
= + × + ×
V V a V a V
2 A B C
V
and
A B C
p ×
2
j
= × = - +
1 e 0, 5 . j
3
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are the measured phase voltages
3
2
1MRK 506 371-UUS E
M1405-46 v12
(Equation 102)
Line distance protection REL670
Commissioning manual