PS7101 Advanced Power System Analysis M.E Question Bank : valliammai.co.in

Name of the College : Valliammai Engineering College
University : Anna University
Department : Electrical and Electronics Engineering
Subject Code/Name : PS7101-Advanced Power System Analysis
Degree : M.E Power Systems
Year : I
Semester : I
Document Type : Question Bank
Website : valliammai.co.in

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Valliammai Advanced Power System Analysis Question Paper

PS7101-Advanced Power System Analysis Question Bank

Related : Valliammai Engineering College PX7103 Analysis & Design of Inverters M.E Question Bank : www.pdfquestion.in/2801.html

Unit I

Part A :
1. List the advantages of flexible packed storage scheme.
2. Define sparsity and near-optimal ordering.
3. What is triangular factorization and back substitution?
4. What is the need of optimal ordering of matrices?
5. Use Gaussian elimination to solve the following linear system
7. Define sparse matrix
8. What is meant by compact arrays?
9. Write the advantage of sparse matrix?
10. What is meant by pivotal equation?
11. When is matrix said to be sparse?
12. What is ordering?

Unit II

Part A :
1. List any two advantages of fast decoupled power flow method.
2. Write the power flow equation in polar form.
3. Compare the advantages of FDLF and Newtons load flow method?
4. How is power flow different from continuation power flow method?
5. What do you mean by flat voltage start?
6. What is meant by Available Transfer Capability?
7. Why is one of the buses taken as slack bus in load flow analysis?
8. What is called available transfer capability?
9. List any two advantages of fast de-coupled power flow method.
10. Define the term sensitivity factor in power system?
11. What are the three types of buses in the power network?
12. Write the polar form of the power flow equations.
13. What is available transfer capability?
14. Write the power flow equations in real variable form.
15. What are the assumptions made in Fast Decoupled power flow method of power flow analysis?

Unit III

Part A :
1. Define the term sensitivity factor in power system.
2. What is near-optimal ordering?
3. List the control variables in OPF.
4. What is security constrained optimal power flow?
5. What is unit commitment and load scheduling?
6. List the advantages interior point algorithm.
7. What is the significance of linear sensitivity coefficients?
8. Write the power balance equation with only real power variables.
9. What is the significance of gradient method?
10. Write down the equation of cost function.
11. What is the difference between load flow and optimal power flow?
12. What is meant by bus incremental cost?
13. What is the purpose of optimal power flow program?
14. What is unit commitment?
15. Give the applications of OPF problem.
16. What are the different methods of solving the OPF problem?

Unit IV

Part A :
1. Define symmetrical and unsymmetrical faults.
2. List the solution technique for short circuit analysis.
3. What is meant by fault level at a bus and give the expression for the same.
4. List the various types of faults on transmission lines.
5. What are symmetrical component.

6. List out the approximations normally used in modeling for short circuit analysis.
7. Distinguish between 012 frame and abc frame.
8. What is bus impedance matrix ? why it is used in short circuit analysis?
9. State the applications of short circuit analysis.
10. Draw the transient behavior of an unloaded generator , when there is a sudden three phase short circuit at the terminals.

11. Why zero sequence impedance of a transmission line is more than its sequence impedance.
12. Name the method of reducing short circuit capacity.
13. Why the sequence reactance of transformer are equal.
14. Why the pre fault current are usually neglected in fault computation.
15. What are the assumptions made in short circuit studies of large power system network.

16. Name the main difference in representation of power system for load flow and short circuit studies.
17. What are the objectives of short circuit analysis.
18. The three – phase fault level of 220 kV bus is 40 pu on 100 MVA base. What is the positive sequence Thevenin impedance looking into the bus in ohms? Neglect resistance.
19. Draw the zero sequence network of a star –delta (Y/ ?) connected transformer.
20. What is power invariance in symmetrical components?

21. Define sequence impedance and sequence network of power system.
22. Draw the zero sequence equivalent network for Y/Y connected transformer.
23. Name the fault in which negative and zero sequence current are equal to zero.
24. From Y-bus for the system shown in Fig.4.
25. What is meant by mutual coupling?

26. Give the sequence of components in short circuit analysis.
27. What is the most severe fault in the power system?
28. Write the usage of bus building algorithm?
29. List the various types of faults on transmission lines.
30. Define the Fortescue’s theorem
31. What are symmetrical components?
32. Classify the faults in power systems