GE F650 - Page 225

5-78 F650 Digital Bay Controller GEK-106310AB
5.4 PROTECTION ELEMENTS 5 SETTINGS
5
The following table shows the SMIN and angle values that must be used for some typical applications:
Table 5–71: DIRECTIONAL POWER ELEMENT
By adding 90º to the angles shown on figures a, b, c and d, the represented elements would be similar but with Reactive
Power instead of Active Power.
Any other angle would provide a mixed Protection Between Active and Reactive power.
A different angle selection for Stage 1 and Stage 2 could provide in a single element, a Reactive and Active power
limitation. For example, using the following values:
Dir Power Angle 1(RCA) 0º
Stage 1 Tap 0
Dir Power Angle 2(RCA) 90º
Stage 2 Tap 0
We would obtain a mixed Protection Between figure (d) and figure (e).
b) SETTINGS
Table 5–72: 32 ELEMENT SETTINGS
The snapshot event setting enables or disables the snapshot event generation for this element.
Function: Enables or disables the directional element.
Blk Time After Close: In seconds. This settings allow to block the element 32 during the time specified in the
setting after the breaker switches from OPEN to CLOSED.
Dir Power Angle (1-2) (RCA): This setting specifies the relay characteristic angle (RCA) for the directional power
element. This setting provides ability to respond to the function in any direction defined
(active forward power, active low forward power, etc.)
SMIN (STAGE TAP) ANGLE (RCA) ELEMENT
>0 0º Forward Active Power
<0 0º Reverse Low Forward Active Power
>0 180º Reverse Forward Active Power
<0 180º Low Forward Active Power
SETPOINT > PROTECTION ELEMENTS > POWER > DIRECTIONAL POWER>
DIRECTIONAL POWER 1> DIRECTIONAL POWER 2 > DIRECTIONAL POWER 3
SETTING DESCRIPTION NAME DEFAULT
VALUE
STEP RANGE
Function permission Function DISABLED N/A [DISABLED – ENABLED]
Block from off-line Blk Time After Close 0.00 0.01 s [0.00 : 900.00]
Directional Angle for stage 1 (RCA1) Dir Power Angle 1 0.00 1 Deg [0.00 : 359.99]
Pickup level for stage 1 Stage 1 Tap 10.00 0.01MW [-10000.00 : 10000.00]
Trip time for stage 1 Stage 1 Time 60.00 0.01 s [0.00 : 900.00]
Directional Angle for stage 2 (RCA2) Dir Power Angle 2 0.00 1 Deg [0.00 : 359.99]
Pickup level for stage 2 Stage 2 Tap 20.00 0.01MW [-10000.00 : 10000.00]
Trip time for stage 2 Stage 2 Time 60.00 0.01 s [0.00 : 900.00]
Snapshot Event generation Snapshot Events ENABLED N/A [DISABLED – ENABLED]