GE T60 Instruction Manual page 322

SYSTEM SETUP
5
In our example, the following phase and zero-sequence compensation equations would be used:
For Winding 1:
For Winding 2:
5.5.4.7 Magnitude, phase angle, and zero sequence compensation
Complete magnitude, phase angle, and zero sequence compensation is as follows:
where
c c
I [w], I [w], and I
A B
M [w] = magnitude compensation factor for winding w (see previous sections)
p c
I [w], I [w], and I
A B
5-140
c
I [w] = M [w] x I
A
c
I [w] = M [w] x I
B
c
I [w] = M [w] x I
C
c
[w] = magnitude, phase, and zero-sequence compensated winding w phase currents
C
c
[w] = phase and zero sequence compensated winding w phase currents (see earlier)
C
p
[w], where w = 1, 2, ..., w
A total
p
[w], where w = 1, 2, ..., w
B total
p
[w], where w = 1, 2, ..., w
C total
T60 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
Eq. 5-20
Eq. 5-21
Eq. 5-22
Eq. 5-23
Eq. 5-24