Statémént A single line diagram of a power system is shown in Fig.3.1. All the sequence reactances of the power system components are depicted in per unit on 20 MVA base, 110KV (L-L) in transmission circuit. If a single line to ground fault occurs on phase a through a reactance of 150 ohm at F, determine the current in ampere fed into the fault. The fault point F is assumed to be at 65% of transmission line length from the bus bar connected to generators A and B. 20 MVA |Xa~X;~ j ®.1 Xy~j 0.35 n 1I KV X;=j0.3 X-j0.3 Xy-j0.05/ 20 MVA X,=j0.25 X;=j0.25 Xy=j0.05 110 KV Transmission X-X,-X-J 0.1 X-X=X¢=j 0.1 circuit D |Xr-Xx= j®.1 Xx=j 0.35 X-X-Xrj 0.1 X-X-X 0.1

Statémént A single line diagram of a power system is shown in Fig.3.1. All the sequence reactances of the power system components are depicted in per unit on 20 MVA base, 110KV (L-L) in transmission circuit. If a single line to ground fault occurs on phase a through a reactance of 150 ohm at F, determine the current in ampere fed into the fault. The fault point F is assumed to be at 65% of transmission line length from the bus bar connected to generators A and B. 20 MVA |Xa~X;~ j ®.1 Xy~j 0.35 n 1I KV X;=j0.3 X-j0.3 Xy-j0.05/ 20 MVA X,=j0.25 X;=j0.25 Xy=j0.05 110 KV Transmission X-X,-X-J 0.1 X-X=X¢=j 0.1 circuit D |Xr-Xx= j®.1 Xx=j 0.35 X-X-Xrj 0.1 X-X-X 0.1

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 3.49P: Consider the single-Line diagram of a power system shown in Figure 3.42 with equipment ratings...

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