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Z-bus matrix of 3 bus power system is given below, due to fault at bus-3 ( as shown). Find the final voltage at bus1 and bus-2. Consider the all bus voltage as 1 p.u. prior to the fault. Bus impedances are in p.u. values.

  • a)
    V1 = 0.29 p.u, V2 = 0.50 p.u
  • b)
    V1 = 0.50 p.u, V2 = 0.29 p.u
  • c)
    V1 = 0.40 p.u, V2 = 0.50 p.u 
  • d)
    V1 = 0.50 p.u, V2 = 0.40 p.u
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Z-bus matrix of 3 bus power system is given below, due to fault at bus...
Fault current at bus 3 is given by If3  
= -j 2.1762 p.u (Vp = voltage of the bus prior to fault).
Due to fault at bus-3 its voltage becomes 0 V and the voltage of Bus-1 and Bus-2 will also reduce. 
Changes in voltage can be found with the help of the Z-bus matrix as.

ΔV1 = (j0.3243)(j2.1762)  = - 0.7057
ΔV2 = (j0.2297)(j2.1762) = - 0.4998
Final voltage at Bus-1: Vf1 = Vp1 + ΔV1 = 1 - 0.7057 = 0.2943 p.u
Final voltage at Bus-2: Vf2 = Vp2 + ΔV2 = 1 - 0.4998 = 0.5002 p.u
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Most Upvoted Answer
Z-bus matrix of 3 bus power system is given below, due to fault at bus...
Fault current at bus 3 is given by If3  
= -j 2.1762 p.u (Vp = voltage of the bus prior to fault).
Due to fault at bus-3 its voltage becomes 0 V and the voltage of Bus-1 and Bus-2 will also reduce. 
Changes in voltage can be found with the help of the Z-bus matrix as.

ΔV1 = (j0.3243)(j2.1762)  = - 0.7057
ΔV2 = (j0.2297)(j2.1762) = - 0.4998
Final voltage at Bus-1: Vf1 = Vp1 + ΔV1 = 1 - 0.7057 = 0.2943 p.u
Final voltage at Bus-2: Vf2 = Vp2 + ΔV2 = 1 - 0.4998 = 0.5002 p.u
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Question Description
Z-bus matrix of 3 bus power system is given below, due to fault at bus-3 ( as shown). Find the final voltage at bus1 and bus-2. Consider the all bus voltage as 1 p.u. prior to the fault. Bus impedances are in p.u. values.a)V1 = 0.29 p.u, V2 = 0.50 p.ub)V1 = 0.50 p.u, V2 = 0.29 p.uc)V1 = 0.40 p.u, V2 = 0.50 p.ud)V1 = 0.50 p.u, V2 = 0.40 p.uCorrect answer is option 'A'. Can you explain this answer? for Electrical Engineering (EE) 2026 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Z-bus matrix of 3 bus power system is given below, due to fault at bus-3 ( as shown). Find the final voltage at bus1 and bus-2. Consider the all bus voltage as 1 p.u. prior to the fault. Bus impedances are in p.u. values.a)V1 = 0.29 p.u, V2 = 0.50 p.ub)V1 = 0.50 p.u, V2 = 0.29 p.uc)V1 = 0.40 p.u, V2 = 0.50 p.ud)V1 = 0.50 p.u, V2 = 0.40 p.uCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Z-bus matrix of 3 bus power system is given below, due to fault at bus-3 ( as shown). Find the final voltage at bus1 and bus-2. Consider the all bus voltage as 1 p.u. prior to the fault. Bus impedances are in p.u. values.a)V1 = 0.29 p.u, V2 = 0.50 p.ub)V1 = 0.50 p.u, V2 = 0.29 p.uc)V1 = 0.40 p.u, V2 = 0.50 p.ud)V1 = 0.50 p.u, V2 = 0.40 p.uCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Z-bus matrix of 3 bus power system is given below, due to fault at bus-3 ( as shown). Find the final voltage at bus1 and bus-2. Consider the all bus voltage as 1 p.u. prior to the fault. Bus impedances are in p.u. values.a)V1 = 0.29 p.u, V2 = 0.50 p.ub)V1 = 0.50 p.u, V2 = 0.29 p.uc)V1 = 0.40 p.u, V2 = 0.50 p.ud)V1 = 0.50 p.u, V2 = 0.40 p.uCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE). Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free.
Here you can find the meaning of Z-bus matrix of 3 bus power system is given below, due to fault at bus-3 ( as shown). Find the final voltage at bus1 and bus-2. Consider the all bus voltage as 1 p.u. prior to the fault. Bus impedances are in p.u. values.a)V1 = 0.29 p.u, V2 = 0.50 p.ub)V1 = 0.50 p.u, V2 = 0.29 p.uc)V1 = 0.40 p.u, V2 = 0.50 p.ud)V1 = 0.50 p.u, V2 = 0.40 p.uCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Z-bus matrix of 3 bus power system is given below, due to fault at bus-3 ( as shown). Find the final voltage at bus1 and bus-2. Consider the all bus voltage as 1 p.u. prior to the fault. Bus impedances are in p.u. values.a)V1 = 0.29 p.u, V2 = 0.50 p.ub)V1 = 0.50 p.u, V2 = 0.29 p.uc)V1 = 0.40 p.u, V2 = 0.50 p.ud)V1 = 0.50 p.u, V2 = 0.40 p.uCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Z-bus matrix of 3 bus power system is given below, due to fault at bus-3 ( as shown). Find the final voltage at bus1 and bus-2. Consider the all bus voltage as 1 p.u. prior to the fault. Bus impedances are in p.u. values.a)V1 = 0.29 p.u, V2 = 0.50 p.ub)V1 = 0.50 p.u, V2 = 0.29 p.uc)V1 = 0.40 p.u, V2 = 0.50 p.ud)V1 = 0.50 p.u, V2 = 0.40 p.uCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Z-bus matrix of 3 bus power system is given below, due to fault at bus-3 ( as shown). Find the final voltage at bus1 and bus-2. Consider the all bus voltage as 1 p.u. prior to the fault. Bus impedances are in p.u. values.a)V1 = 0.29 p.u, V2 = 0.50 p.ub)V1 = 0.50 p.u, V2 = 0.29 p.uc)V1 = 0.40 p.u, V2 = 0.50 p.ud)V1 = 0.50 p.u, V2 = 0.40 p.uCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Z-bus matrix of 3 bus power system is given below, due to fault at bus-3 ( as shown). Find the final voltage at bus1 and bus-2. Consider the all bus voltage as 1 p.u. prior to the fault. Bus impedances are in p.u. values.a)V1 = 0.29 p.u, V2 = 0.50 p.ub)V1 = 0.50 p.u, V2 = 0.29 p.uc)V1 = 0.40 p.u, V2 = 0.50 p.ud)V1 = 0.50 p.u, V2 = 0.40 p.uCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
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