GEK-98846A
42
Configurable output selection is performed in the factory when ordered.
4.19 OPERATIONS
The MLP program allows the following operations to be performed:
- Breaker opening.
- Breaker close.
- Recloser block. (MLP2000 and MLP3000).
- Recloser unblock (MLP2000 and MLP3000).
- Relay synchronism
The synchronism operation can only be performed via serial communications, not
through the relay keyboard.
4.20. OUT OF STEP BLOCKING UNIT
The out of step blocking units is designed to identify a three phases power
oscillation fault situation. This prevents the distance protection system from tripping
unnecessarily.
There is a setting which allows you to disable this setting as well as a timer to
determine the speed at which the impedance, as seen by the relay, enters into the tripping
zone. This speed allows us to identify a phase power oscillation fault situation.
Figure 17 illustrates the state diagram for this functions as well as the X/J plane
characteristic
To better understand this, we will explain the operation with an example.
In a fault situation, the impedance crosses the OSB zone (in tomato form) and stars
the oscillation detection timer (TL3). When this timer terminates, the M3 measuring unit
(circle) is checked. Because of the fault, which developed rapidly, this unit will be activated.
In this case the relay will not be blocked by a power oscillation.
Needless to say, if the impedance evolves slowly, when the aforementioned timer
terminates, the M3 measuring unit will not vet have been activated, showing that the power
oscillation had occurred. In this way the relay will block the trip. Once leaving the OSB
zone, the relay will wait a fixed time of 50 ms before returning to the initial or stand-by
state.
Содержание MLP1000
Страница 94: ...GEK 98846A 93 Figure 1 System diagram with MLP CPR and TTI ...
Страница 95: ...GEK 98846A 94 Figure 2 Case dimensions and drilling form 1 rack ...
Страница 96: ...GEK 98846A 95 Figure 3 1 External Connections MLP1000 ...
Страница 97: ...GEK 98846A 96 Figure 3 2 External Connections MLP1000 ...
Страница 99: ...GEK 98846A 98 Figure 3 4 External Connections MLP1000 ...
Страница 100: ...GEK 98846A 99 Figure 3 5 External Connections MLP2000 ...
Страница 101: ...GEK 98846A 100 Figure 3 6 External Connections MLP2000 ...
Страница 103: ...GEK 98846A 102 Figure 3 8 External Connections MLP2000 ...
Страница 104: ...GEK 98846A 103 Figure 3 9 External Connections MLP3000 ...
Страница 105: ...GEK 98846A 104 Figure 3 10 External Connections MLP3000 ...
Страница 107: ...GEK 98846A 106 Figure 3 12 External Connections MLP3000 ...
Страница 108: ...GEK 98846A 107 Figure 4 Protection Logic ...
Страница 109: ...GEK 98846A 108 Figure 5 1 Trip decision diagram ...
Страница 110: ...GEK 98846A 109 Figure 5 2 Trip decision diagram ...
Страница 111: ...GEK 98846A 110 Figure 5 3 Trip decision diagram ...
Страница 112: ...GEK 98846A 111 Figure 5 4 Trip decision diagram ...
Страница 113: ...GEK 98846A 112 Figure 6 1 Z1X protection scheme ...
Страница 114: ...GEK 98846A 113 Figure6 2 ACCZ2 Protection scheme ...
Страница 115: ...GEK 98846A 114 Figure7 LPU function diagram ...
Страница 116: ...GEK 98846A 115 Figure 8 1 ROD function logic ...
Страница 117: ...GEK 98846A 116 Figure 8 2 ROD function diagram ...
Страница 118: ...GEK 98846A 117 Figure 9 1 DD function logic ...
Страница 119: ...GEK 98846A 118 Figure 9 2 DD function diagram ...
Страница 120: ...GEK 98846A 119 Figure 10 1 FF function logic ...
Страница 121: ...GEK 98846A 120 Figure 10 2 FF function diagram ...
Страница 122: ...GEK 98846A 121 Figure 11 1 Recloser diagram ...
Страница 123: ...GEK 98846A 122 Figure 11 2 Recloser Diagram ...
Страница 124: ...GEK 98846A 123 Figure 11 3 Recloser Diagram ...
Страница 125: ...GEK 98846A 124 Figure 12 Fault selector ...
Страница 126: ...GEK 98846A 125 Figure 13 Menu Tree Diagram ...
Страница 127: ...GEK 98846A 126 Figure 14 MLP3000 Settings and data ...
Страница 128: ...GEK 98846A 127 Figure 15 Connection scheme for relay tests ...
Страница 129: ...GEK 98846A 128 Figure 16 Power swing diagram function ...
Страница 130: ...GEK 98846A 129 Figure 17 Mho Reactance characteristics of the MLP ...
