Answered: (c) Explain how directional and…

(c) Explain how directional and time-delay overcurrent relays can be used to protect the system in Figure Q4(c). Is the system also protected against bus fault? Prove it.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter10: System Protection

Section: Chapter Questions

Problem 10.28P

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(c)
Explain how directional and time-delay overcurrent relays can be used to protect the
system in Figure Q4(c). Is the system also protected against bus fault? Prove it.
2
3
B1
B12
B21
B23
B32
B3
P,
load L1
load L2
load L3
Figure Q4 (c): System with two sources

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