For the system shown in Figure 10.44, directional overcurrent relays are used at breakers B12, B21, B23,

Question:

For the system shown in Figure 10.44, directional overcurrent relays are used at breakers B12, B21, B23, B32, B34, and B43. Overcurrent relays alone are used at $\mathrm{B} 1$ and $\mathrm{B} 4$.

(a) For a fault at $\mathrm{P}_{1}$, which breakers do not operate? Which breakers should be coordinated? Repeat (a) for a fault at

(b) $\mathrm{P}_{2}$,

(c) $\mathrm{P}_{3}$.

(d) Explain how the system is protected against bus faults.

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Power System Analysis And Design

ISBN: 9781305632134

6th Edition

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

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Question Posted: Mar 04, 2024 10:00 AM

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For the system shown in Figure 10.44, directional overcurrent relays are used at breakers B12, B21, B23,

Question:

B1 1 B12 Load 11 P B21 2 B23 Load L2 B32 3 334 Load L3 P B43 4 B4 Load L4

Step by Step Answer:

Power System Analysis And Design

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