The per unit equivalent system of a power system is shown below. It is working at no load when a symmetrical 3 phase fault is developed on bus 3.Suppose also that the no-load voltage at every bus is equal to the pre-fault voltage: Vf 1.000 pu and the inverse of this matrix is given below4140°Zj0.1mj0.1a. Noneb. V3-0c. V3-0.30d. V3-0.32j0.2m[0+ j0.1799 0+j0.1636 0+j0.1743 0+j0.1753]0+j0.1636 0+jo.3591 0+j0.1929 0+30.21940+j0.1743 0+j0.1929 0+j0.2565 0+j0.1796Lo+jo.1753 0+jo.2194 0+j0.1796 0+j0.3307The per-unit voltage at bus 3 in the system during the sub transient period is:Select one:j0.1mj0.8mmj0.53j0.5mor2j2.5mvvvvN

In this question we need to find a voltage at bus -3 when a three phase fault occurred at bus 3.

The per unit equivalent system of a power system is shown below. It is working at no load when a symmetrical 3 phase fault is developed on bus 3. Suppose also that the no-load voltage at every bus is equal to the pre-faut voltage: V 1.000 pu and the inverse of this matrix is given below 4 140° Zh= [0+ j0.1799 0+ j0.1636 j0.1 m a. None b. V3-0 c. V3-0.30 d. V3-0.32 j0.1 j0.2 m 0+j0.1636 0+j0.1743 0+j0.1753] 0+jo.3591 0+j0.1929 0+j0.2194 0+j0.1743 0+j0.1929 0+j0.2565 0+j0.1796 Lo+j0.1753 0+jo.2194 0+j0.1796 0+j0.3307 The per-unit voltage at bus 3 in the system during the sub transient period is: Select one: j0.1 m j0.8 mm j0.5 3 j0.5 2 j2.5 m vvvv N

The per unit equivalent system of a power system is shown below. It is working at no load when a symmetrical 3 phase fault is developed on bus 3. Suppose also that the no-load voltage at every bus is equal to the pre-faut voltage: V 1.000 pu and the inverse of this matrix is given below 4 140° Zh= [0+ j0.1799 0+ j0.1636 j0.1 m a. None b. V3-0 c. V3-0.30 d. V3-0.32 j0.1 j0.2 m 0+j0.1636 0+j0.1743 0+j0.1753] 0+jo.3591 0+j0.1929 0+j0.2194 0+j0.1743 0+j0.1929 0+j0.2565 0+j0.1796 Lo+j0.1753 0+jo.2194 0+j0.1796 0+j0.3307 The per-unit voltage at bus 3 in the system during the sub transient period is: Select one: j0.1 m j0.8 mm j0.5 3 j0.5 2 j2.5 m vvvv N

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

Chapter9: Unsymmetrical Faults

Section: Chapter Questions

Problem 9.8P

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