GE D60 Instruction Manual page 534
Line distance protection system ur series
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Also See for D60:
- Instruction manual (826 pages) ,
- Communications manual (532 pages) ,
- Instruction manual (822 pages)
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9.4 SERIES COMPENSATED LINES
9
9-20
(a)
X
Set reach
(b)
X
Set reach
(c)
X
Set reach
Figure 9–8: DYNAMIC REACH FOR INTERNAL AND EXTERNAL FAULTS
D60 Line Distance Protection System
LOW-CURRENT EXTERNAL
FAULT
Impedance
Trajectory
Steady-state
apparent
impedance
The reach is safely
reduced
R
HIGH-CURRENT EXTERNAL
FAULT
Impedance
Trajectory (no
subsynchronous
oscillations)
Steady-state
apparent
impedance
The reach is not
reduced
R
HIGH-CURRENT INTERNAL
FAULT
Impedance
Trajectory (no
subsynchronous
oscillations)
Steady-state
apparent
impedance
The reach is not
reduced
R
837730A1.CDR
9 THEORY OF OPERATION
GE Multilin
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