ABB Relion 670 Series Applications Manual page 165

1MRK 511 407-UUS Rev. J
Set value
A
B
C
The function has two stages that can be set independently.
With the parameter
The function gives trip if the power component in the direction defined by the setting
larger than the set pick up power value
IEC06000440 V1 EN-US
Figure 73: Overpower mode
The setting
setting is given in p.u. of the generator rated power, see equation 81.
Minimum recommended setting is 0.2% of S
Phasor measurement unit RES670
Application manual
Mode
OpMode1(2) the function can be set Enabled / Disabled .
Q
Power1(2)
Power1(2) gives the power component pick up value in the Angle1(2) direction. The
© Copyright 2017 Hitachi Power Grids. All rights reserved
Formula used for complex power calculation
*
= × ×
S 3 V I
A A
EQUATION2044 V1 EN-US
*
= × ×
S 3 V I
B B
EQUATION2045 V1 EN-US
*
= × ×
S 3 V I
C
C
EQUATION2046 V1 EN-US
Power1(2)
Operate
Angle1(2)
when metering class CT inputs into the IED are used.
N
P
en06000440.vsd
Section 8
Current protection
(Equation 78)
(Equation 79)
(Equation 80)
Angle1(2) is
159