ejercicios rel670 abb caracteristicas de protección de distancia
Describes The Quadrilateral Characteristic
ABB DISTANCE PROTECTION RELAYFull description
distance protectionDescripción completa
ABB DISTANCE PROTECTION RELAY
Descripción completa
Distance Protection SOTF
Descripción: distance
Descripción: Basic principles of Distance protection
Análise de Proteção de Distância
Distance Protection - Mutual Compensation
Exercise 2 - MS Word 2003Full description
Análise de Proteção de Distância
Full description
EquilibriumDescripción completa
Example Distance Distance ENU
Example Distance Distance ENU
Example Distance Distance ENU
G005001 G005001 G005001 G005001
Line distance protection REL670 Exercise 2 - Distance protection operate times 1MRG005002 1MRG005002
1MRG005002
Exercise 2 - Distance protection operate times
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On completion of this exercise you should be able to •
Verify the operate times of the distance protection zones for single fault types
•
Understand the behavior of the distance protection operate times for evolving faults
•
Perform relay tests to verify the above situations
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Line distance protection REL670 1MRG005002
Exercise 2 - Distance protection operate times
Distance protection o perate times for single fault ty pes The operate time of the distance protection zones has been indirectly tested in the previous exercise, as usually relay test equipment make use of the operate time of the zone to recognize that a fault occurs in the correct zone. However, characteristic tests are border tests, and the operate time of the relay can be higher than the typical one if tested close to its border. In order to test the operate times faults inside the distance protection characteristics are injected.
Relay settings Keep the same relay settings you have from the previous exercise.
Injection tests 1. Connect the test set to REL670 Connect the three voltage generators and the three current generators of the test set to the REL670. The same connections of the previous exercise are valid.
2. Open the Omicron test file simulating Phase-earth faults The test file is called REL670 LE Operate times.adt and it contains phase-earth faults inside each distance protection zone. The file is available in the folder Files for SEP-602A REL670 / OMICRON TESTS on the desktop of your training PC.
3. Run all the tests and measure the operate times Figure 1 shows the test results for the single phase to earth faults.
Figure 1: Operate times for phase-earth faults
Line distance protection REL670 1MRG005002
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Exercise 2 - Distance protection operate times
4. Open the Omicron test file simulating phase-phase faults The test file is called REL670 LL Operate times.adt and it contains phase-phase faults inside each distance protection zone. The file is available in the folder Files for SEP-602A REL670 / OMICRON TESTS on the desktop of your training PC.
5. Run all the tests and measure the operate times Figure 2 shows the test results for the phase-phase faults.
Figure 2: Operate times for phase-phase faults
6. Open the Omicron test file simulating three-phase faults The test file is called REL670 LLL Operate times.adt and it contains 3-phase faults inside each distance protection zone. The file is available in the folder Files for SEP-602A REL670 / OMICRON TESTS on the desktop of your training PC.
7. Run all the tests and measure the operate times Figure 3 shows the test results for the three-phase faults.
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Line distance protection REL670 1MRG005002
Exercise 2 - Distance protection operate times
Figure 3: Operate times for three-phase faults
Distance protection op erate times for evolving faults REL670 is a distance protection relay that has different timers for each zone and for each fault type. In order to manage the time selectivity with distance protection relays of different manufacturers, it is necessary to understand the behavior of the protection when a fault appears in a zone and evolves into a different fault type, within the same zone. As this is often a “remote back-up” issue, zone 3 will be used for this example, but the conclusions are valid for any distance protection zone of REL670. For this exercise we will simulate the following with help of the relay test set:
Zone 3 : tPE = tPP = 1 s 1) at time t = 0 one phase-earth fault appears in zone 3 (1 s operate time for LE faults) and 2) after 400 ms the fault evolves into a three phase fault, always in zone 3 (1 s operate time for LLL faults). The operate time from the beginning of the first earth-fault will be measured.
Figure 4: Evolving fault inside zone 3.
Line distance protection REL670 1MRG005002
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Exercise 2 - Distance protection operate times
Injection tests 8. Open the Omicron test file simulating the evolving fault sequence The test file is called REL670 Zone3 Evolving Fault.seq and it contains the following sequence: pre-fault for 1,2 s Fault L1E in zone3 for 400 ms Fault L1L2L3 in zone3 The file is available in the folder Files for SEP-602A REL670 / OMICRON TESTS on the desktop of your training PC and the sequence is shown in details in Figure 5.
Figure 5: Sequence for the evolving fault in zone3
9. Run the sequence and measure the operate time You should measure the operate time from the first fault injection, which means at the beginning of the phaseearth fault. Notice that the operate time is 1 second and not 1,4 seconds. Figure 6 shows how the operate time of the distance protection can be measured with help of the sliding cursors.
Figure 6: Operate time for evolving fault within the same protection zone
