GE F650 Instruction Manual page 225

5.4 PROTECTION ELEMENTS
The following table shows the SMIN and angle values that must be used for some typical applications:
Table 5–71: DIRECTIONAL POWER ELEMENT
SMIN (STAGE TAP)
>0
<0
>0
<0
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)
Stage 1 Tap
Dir Power Angle 2(RCA)
Stage 2 Tap
We would obtain a mixed Protection Between figure (d) and figure (e).
5
b) SETTINGS
Table 5–72: 32 ELEMENT SETTINGS
SETPOINT > PROTECTION ELEMENTS > POWER > DIRECTIONAL POWER>
DIRECTIONAL POWER 1> DIRECTIONAL POWER 2 > DIRECTIONAL POWER 3
SETTING DESCRIPTION
Function permission
Block from off-line
Directional Angle for stage 1 (RCA1)
Pickup level for stage 1
Trip time for stage 1
Directional Angle for stage 2 (RCA2)
Pickup level for stage 2
Trip time for stage 2
Snapshot Event generation
The snapshot event setting enables or disables the snapshot event generation for this element.
Function:
Blk Time After Close:
Dir Power Angle (1-2) (RCA):
5-78
ANGLE (RCA)
0º
0º
180º
180º
0º
0
90º
0
NAME
Function
Blk Time After Close
Dir Power Angle 1
Stage 1 Tap
Stage 1 Time
Dir Power Angle 2
Stage 2 Tap
Stage 2 Time
Snapshot Events
Enables or disables the directional element.
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.
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.)
F650 Digital Bay Controller
ELEMENT
Forward Active Power
Reverse Low Forward Active Power
Reverse Forward Active Power
Low Forward Active Power
DEFAULT STEP RANGE
VALUE
DISABLED N/A [DISABLED – ENABLED]
0.00 0.01 s [0.00 : 900.00]
0.00 1 Deg [0.00 : 359.99]
10.00 0.01MW [-10000.00 : 10000.00]
60.00 0.01 s [0.00 : 900.00]
0.00 1 Deg [0.00 : 359.99]
20.00 0.01MW [-10000.00 : 10000.00]
60.00 0.01 s [0.00 : 900.00]
ENABLED N/A [DISABLED – ENABLED]
5 SETTINGS
GEK-106310AB