GE N60 Instruction Manual page 287

5 SETTINGS
By making the characteristic angle adjustable and providing for both negative and positive values of the minimum operating
power a variety of operating characteristics can be achieved as presented in the figure below. For example, section (a) in
the figure below shows settings for reverse power, while section (b) shows settings for low forward power applications.
(a)
OPERATE
(c)
RESTRAIN
(e)
842702A1.CDR
Figure 5–68: DIRECTIONAL POWER ELEMENT SAMPLE APPLICATIONS
GE Multilin N60 Network Stability and Synchrophasor Measurement System
Q
SMIN
RESTRAIN
Figure 5–67: DIRECTIONAL POWER CHARACTERISTIC
Q
RESTRAIN
P
RCA = 180 o
SMIN > 0
Q
OPERATE
P
o
RCA = 0
SMIN < 0
Q
OPERATE
RESTRAIN
P
o
RCA = 90
SMIN > 0
OPERATE
RCA+
CALIBRATION
P
+
-
(b)
Q
RESTRAIN
OPERATE
RCA = 180
SMIN < 0
(d)
Q
OPERATE
RESTRAIN
RCA = 0
SMIN > 0
(f)
Q
RESTRAIN
OPERATE
RCA = 270
SMIN < 0
5.6 GROUPED ELEMENTS
P
o
P
o
P
o
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