Structure of the question paper for the end semester

Structure of the question paper
For the end semester examination, the question paper contains three questions from each module out
of which two questions are to be answered by the student.

EPC1001 COMPUTER AIDED POWER SYSTEM ANALYSIS 3-0-0-3
Structure of the course
Lecture : 3 hrs/week
Internal Assessment : 40 Marks
End semester Examination : 60 Marks
Credits: 3
Course Objective
1. To introduce computer applications in analysis of power systems
2. To understand the solution methods and techniques involved in power system studies
Learning outcomes
Upon successful completion of this course, students will have a better understanding of the merits
and demerits of critical analytical solution methods which are the basis for valid techniques in solving
power system problems
Module I
Review of solution of Linear System of equations by Gauss Jordan method, Gauss elimination, LU
factorization and LDU factorization .
Load Flow Studies: Overview of Gauss, Gauss- Seidel and Newton Raphson Methods, Decoupled
Load Flow, Fast Decoupled Load Flow, DC load flow, Three-phase Load Flow and Harmonic Load
flow. Sparsity techniques, Triangular factorization and Optimal ordering.
Incorporation of FACTS devices in Load Flow: Static Tap Changing, Phase Shifting (PS), Static VAR
Compensator (SVC), Thyristor Controlled Series Compensator (TCSC) and Unified Power Flow
Controller (UPFC)
Module II
Elementary linear graph theory –Incidence and network matrices. Development of network matrices
from Graph theoretic approach, Building algorithm for Bus impedance matrix, Modification of Z
BUS
matrix due to changes in primitive network.
Short Circuit studies – Types of Faults – Short circuit study of a large power system – Algorithm for
calculating system conditions after fault – three phase short circuit, three phase to ground, double line
to ground, line to line and single line to ground fault.
Module III
State estimation – least square and weighted least square estimation methods for linear and non-linear
systems. Static state estimation of power systems- injections only and line only algorithms, Treatment
of bad data – detection, identification and suppression of bad data.
Contingency Analysis- adding and removing multiple lines, Analysis of single and multiple
contingencies, Contingency Analysis by DC model, System reduction for contingency and fault studies

References
1. John J. Grainger, William D. Stevenson, Jr., Power System Analysis , Tata McGraw-Hill Series in
Electrical and Computer Engineering.
2. I. J. Nagrath and D. P. Kothari, Modern Power system Analysis , 3
rd
Edition, Tata McGraw-Hill
Publishers, 1980.
3. J. Arriliga and N. R. Watson, Computer Modelling of Electrical Power Systems , Wiley
Publications, 2001
4. G.W. Stagg and El-Abiad, Computer Methods in Power System Analysis , McGraw Hill, 1968.