GE D90 Plus Instruction Manual page 648

Plus
THE D90 DISTANCE ELEMENTS
638
Figure 550: Typical ground distance settings window
Assume the following signals are injected into the D90
Based on these signals and the programmed settings, the D90
values.
From the assumed steady-state injection, the D90
The following sub-sections describe the operation of each of the distance characteristics
with respect to these values.
Plus
Plus
also calculates the following.
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 15: THEORY OF OPERATION
.
Plus
calculates the following
Eq. 69
Eq. 70
Eq. 71