1.7 For the system shown in Figure 1.20, the fault at F produces these differing responses at various times: (a) R₁ B₁ and R2 B2 operate; (b) R₁ B₁, R2, R3 B3 and R4 B4 operate; (c) R₁ B1, R2 B2 and R5 B5 operate; (d) R₁ B₁, R5 B5 and R6 B6 operate. Analyze each of these responses for fault F and discuss the possible sequence of events that may have led to these operations. Classify each response as being correct, incorrect, appropriate or inappropriate. Note that 'correct-incorrect' classification refers to relay operation, whereas 'appropriate inappropriate' classification refers to the desirability of that particular response from the point of view of the power system. Also determine whether there was a loss of dependability or a loss of security in each of these cases. R5 B5 R3 B3 R₁ B₁ R2 B2 R4 B4 R6 B6 Figure 1.20 Problem 1.7.

1.7 For the system shown in Figure 1.20, the fault at F produces these differing responses at various times: (a) R₁ B₁ and R2 B2 operate; (b) R₁ B₁, R2, R3 B3 and R4 B4 operate; (c) R₁ B1, R2 B2 and R5 B5 operate; (d) R₁ B₁, R5 B5 and R6 B6 operate. Analyze each of these responses for fault F and discuss the possible sequence of events that may have led to these operations. Classify each response as being correct, incorrect, appropriate or inappropriate. Note that 'correct-incorrect' classification refers to relay operation, whereas 'appropriate inappropriate' classification refers to the desirability of that particular response from the point of view of the power system. Also determine whether there was a loss of dependability or a loss of security in each of these cases. R5 B5 R3 B3 R₁ B₁ R2 B2 R4 B4 R6 B6 Figure 1.20 Problem 1.7.

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.30P: Reconsider Problem 3.29. If Va,VbandVc are a negative-sequence set, how would the voltage and...

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