GE UR Series L90, Instruction Manual

Page: 323 / 846

GE Multilin L90 Line Current Differential System 5-185
5 SETTINGS 5.6 GROUPED ELEMENTS
5
Figure 5–88: POWER SWING DETECT SCHEME LOGIC (1 of 3)
Figure 5–89: POWER SWING DETECT SCHEME LOGIC (2 of 3)
FLEXLOGIC OPERAND
FLEXLOGIC OPERAND
FLEXLOGIC OPERAND
SETTINGS
SETTING
SETTING
SETTING
POWER SWING QUAD
FWD REACH OUT:
POWER SWING QUAD REV
REACH OUT:
POWER SWING OUTER
LIMIT ANGLE:
POWER SWING MIDDLE
LIMIT ANGLE:
POWER SWING INNER
LIMIT ANGLE:
OUTER IMPEDANCE
REGION
I_1 > PICKUP
MIDDLE IMPEDANCE
REGION
INNER IMPEDANCE
REGION
RUN
RUN
RUN
RUN
POWER SWING REV
REACH: POWER SWING MIDDLE
RGT BLD:
POWER SWING INNER
RGT BLD:
POWER SWING
SHAPE:
POWER SWING OUTER
RGT BLD:
POWER SWING FWD
REACH:
POWER SWING
SUPV:
POWER SWING REV
RCA:
POWER SWING QUAD
FWD REACH MID:
POWER SWING QUAD REV
REACH MID: POWER SWING MIDDLE
LFT BLD:
POWER SWING INNER
LFT BLD:
POWER SWING FWD
RCA: POWER SWING OUTER
LFT BLD:
POWER SWING
FUNCTION:
POWER SWING SOURCE:
Enabled = 1
V_1
I_1
POWER SWING OUTER
POWER SWING MIDDLE
POWER SWING INNER
827840A4.CDR
AND
AND
AND
842008A2.CDR
SETTING
POWER SWING SOURCE:
I_0
I_1
I_2
| |I_0| - |I_0'|| > K_0
SETTING
POWER SWING FUNCTION:
Enabled = 1
| |I_1| - |I_1'|| > K_1
| |I_2| - |I_2'|| > K_2
RUN
OR
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
A
ND
0
4 cycles
TIMER
0
10 cycles
TIMER
FLEXLOGIC OPERAND
POWER SWING 50DD