GE L60 Instruction Manual page 300

5.5 GROUPED ELEMENTS
SETTING
POWER SWING
FUNCTION:
Disabled = 0
Enabled = 1
SETTING
POWER SWING SOURCE:
V_1
_1
5
SETTING
POWER SWING FUNCTION:
Disabled = 0
Enabled = 1
SETTING
POWER SWING SOURCE:
I_0
I_1
I_2
5-172
SETTINGS
POWER SWING
SHAPE:
POWER SWING FWD
REACH:
POWER SWING QUAD
FWD REACH MID:
POWER SWING QUAD
FWD REACH OUT:
POWER SWING FWD
RCA:
POWER SWING REV
REACH:
POWER SWING QUAD REV
REACH MID:
POWER SWING QUAD REV
REACH OUT:
POWER SWING REV
RCA:
RUN
OUTER IMPEDANCE
REGION
RUN
MIDDLE IMPEDANCE
REGION
RUN
INNER IMPEDANCE
REGION
SETTING
POWER SWING
SUPV:
RUN
_1 > PICKUP
Figure 5–81: POWER SWING DETECT SCHEME LOGIC (1 of 3)
RUN
| |I_0| - |I_0'|| > K_0
| |I_1| - |I_1'|| > K_1
| |I_2| - |I_2'|| > K_2
I_0, I_1, I_2 - present values
I_0', I_1', I_2' - half-a-cycle old values
K_0, K_2 - three times the average change over last power cycle
K_1 - four times the average change over last power cycle
Figure 5–82: POWER SWING DETECT SCHEME LOGIC (2 of 3)
L60 Line Phase Comparison System
POWER SWING OUTER
LIMIT ANGLE:
POWER SWING MIDDLE
LIMIT ANGLE:
POWER SWING INNER
LIMIT ANGLE:
POWER SWING OUTER
RGT BLD:
POWER SWING OUTER
LFT BLD:
POWER SWING MIDDLE
RGT BLD:
POWER SWING MIDDLE
LFT BLD:
POWER SWING INNER
RGT BLD:
POWER SWING INNER
LFT BLD:
FLEXLOGIC OPERAND
AND POWER SWING OUTER
FLEXLOGIC OPERAND
AND POWER SWING MIDDLE
FLEXLOGIC OPERAND
AND POWER SWING INNER
TIMER
0
10 cycles
TIMER
0
4 cycles
5 SETTINGS
827840A3.CDR
FLEXLOGIC OPERAND
POWER SWING 50DD
842008A1.CDR
GE Multilin