![ABB RELION RET670 Скачать руководство пользователя страница 140](http://html1.mh-extra.com/html/abb/relion-ret670/relion-ret670_installation-and-commissioning-manual_3414632140.webp)
The phase preference logic function PPLPHIZ is tested with a three-phase testing
equipment for distance protections. PPLPHIZ is tested in co-operation with the
distance protection zone, quadrilateral characteristic function ZMQPDIS. The
distance protection and the phase preference logic shall be set to values according
to the real set values to be used. The test is made by means of injection of voltage
and current where the amplitude of both current and voltage and the phase angle
between the voltage and current can be controlled.
During the test the following binary signals (outputs) shall be monitored:
•
Trip signal from distance protection
•
Start signal from phase preference logic
1. Connect the test set for injection of voltage and current.
2. Inject voltages and currents corresponding to a phase-to-phase to earth fault
within zone 1 of the distance protection function. In the test one of the current
inputs (one of the faulted phases) is disconnected. The remaining current is the
fault current out on the protected line. All combinations of two phase-to-earth
faults with one phase current are tested. The result shall be according to table
. It should be checked that the fault will give phase-to-phase voltage, phase-
to-earth voltage, zero-sequence voltage and phase current so that the
conditions set for the logic are fulfilled.
3. The same test is done for a phase-to-phase fault in zone 2.
Table 26:
Operation at different combinations of faults and operation mode
OperMode
Fault type/Faulted phase current to the IED
L1L2N/IL1
L1L2N/IL2
L2L3N/IL2
L2L3N/IL3
L3L3N/IL1
L3L1N/IL3
No Filter
Trip
Trip
Trip
Trip
Trip
Trip
No Pref
Trip
Trip
Trip
Trip
Trip
Trip
1231c
Trip
No Trip
Trip
No Trip
No Trip
Trip
1321c
No Trip
Trip
No Trip
Trip
Trip
No Trip
123a
Trip
No Trip
Trip
No Trip
Trip
No Trip
132a
Trip
No Trip
No Trip
Trip
Trip
No Trip
213a
No Trip
Trip
Trip
No Trip
Trip
No Trip
231a
No Trip
Trip
Trip
No Trip
No Trip
Trip
312a
Trip
No Trip
No Trip
Trip
No Trip
Trip
321a
No Trip
Trip
No Trip
Trip
No Trip
Trip
13.5.7.1
Completing the test
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.
Section 13
1MRK 504 088-UEN C
Verifying settings by secondary injection
134
Installation and commissioning manual
Содержание RELION RET670
Страница 1: ...Relion 670 series Transformer protection RET670 Installation and commissioning manual...
Страница 2: ......
Страница 16: ...10...
Страница 24: ...18...
Страница 26: ...20...
Страница 28: ...22...
Страница 82: ...76...
Страница 88: ...82...
Страница 94: ...88...
Страница 104: ...98...
Страница 110: ...104...
Страница 210: ...204...
Страница 230: ...224...
Страница 239: ...233...