protection system An 11 kV feeding power system shown in Figure 1. Data of the system is provided inTable 1. Consider only 3-phase faults with short circult MVA = 12. The overcurrent relaycharacteristics is given in APPENDIX A. The impedance of the generator to BUS 1 isj0.10 p.u, BUS i to BUS 2 is j0.03 p.u and BUS 2 to BUS 3 is j0.05 p.u. As theconsultant engineer, you were asked to do the following:a. Draw its equivalent in Per Unit circult.b. Calculate fault current at relay 3 and relay 2.c. Calculate relay settings of breaker (B3) and breaker (B2).d. Reason on selecting the value of Current Tap Setting (CTS) and Time DialSetting (TDS).3S3BIB2B311 kVFigure 1Table 1P.F (Lag)S (power inMVA)BUSBreakerC.T Ratio800/5600/51100.85B1260.9B240.9B3400/5 Relay characteristicsTypical time curvestype CO-7over current relay50-60 cyclesCurrent tap settings:4,5.0,7,8,10,12 amperesTime dial setting235 6 7 8 9 10 12 14 16 18 20Current as a multiple of tap settingspuoses u au bugeado

Answered: Image /qna-images/answer/a38a080e-3dfb-4a06-b9e3-5d5efeeb2c3e.jpg

An 11 kV feeding power system shown in Figure 1. Data of the system is provided in Table 1. Consider only 3-phase faults with short circult MVA = 12. The overcurrent relay characteristics is given in APPENDIX A. The impedance of the generator to BUS I is jo.10 p.u, BUS I t BUS 2 is j0.03 p.u and BUS 2 to BUS 3 is j0.05 p.u. As the consultant engineer, you were asked to do the following: a. Draw its equivalent in Per Unit circult. b. Calculate fault current at relay 3 and relay 2.

An 11 kV feeding power system shown in Figure 1. Data of the system is provided in Table 1. Consider only 3-phase faults with short circult MVA = 12. The overcurrent relay characteristics is given in APPENDIX A. The impedance of the generator to BUS I is jo.10 p.u, BUS I t BUS 2 is j0.03 p.u and BUS 2 to BUS 3 is j0.05 p.u. As the consultant engineer, you were asked to do the following: a. Draw its equivalent in Per Unit circult. b. Calculate fault current at relay 3 and relay 2.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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