EE2351 POWER
SYSTEM ANALYSIS L T P
C
3 1 0 4
AIM
To understand the necessity and to become familiar with
the modelling of power system and
components. And to apply different methods to analyse
power system for the purpose of system
planning and operation.
OBJECTIVES
i To model the power system under steady state operating
condition. To apply efficient numerical methods to solve the power flow
problem.
ii. To model and analyse the power systems under abnormal
(or) fault conditions.
iii. To model and analyse the transient behaviour of
power system when it is subjected to a fault.
UNIT I INTRODUCTION 9
Modern power system (or) electric energy system -
Analysis for system planning and operational
studies – basic components of a power system. Generator
models - transformer model –
transmission system model - load representation. Single
line diagram – per phase and per unit
representation – change of base. Simple building
algorithms for the formation of Y-Bus matrix and ZBus matrix.
UNIT II POWER FLOW ANALYSIS 9
Importance of power flow analysis in planning and operation
of power systems. Statement of power
flow problem - classification of buses into P-Q buses,
P-V (voltage-controlled) buses and slack bus.
Development of Power flow model in complex variables form
and polar variables form.
Iterative solution using Gauss-Seidel method including
Q-limit check for voltage-controlled buses –
algorithm and flow chart.
Iterative solution using Newton-Raphson (N-R) method
(polar form) including Q-limit check and bus
switching for voltage-controlled buses - Jacobian matrix elements
– algorithm and flow chart.
Development of Fast Decoupled Power Flow (FDPF) model and
iterative solution – algorithm and
flowchart;
Comparison of the three methods.
UNIT III FAULT ANALYSIS – BALANCED
FAULTS 9
Importance short circuit (or) for fault analysis - basic
assumptions in fault analysis of power systems.
Symmetrical (or) balanced three phase faults – problem
formulation – fault analysis using Z-bus
matrix – algorithm and flow chart. Computations of short
circuit capacity, post fault voltage and
currents.
UNIT IV FAULT ANALYSIS – UNBALANCED
FAULTS 9
Introduction to symmetrical components – sequence
impedances – sequence networks –
representation of single line to ground, line to line and
double line to ground fault conditions.
Unbalanced fault analysis - problem formulation –
analysis using Z-bus impedance matrix –
(algorithm and flow chart.).
UNIT V STABILITY ANALYSIS 9
Importance of stability analysis in power system planning
and operation - classification of power
system stability - angle and voltage stability – simple
treatment of angle stability into small-signal and
large-signal (transient) stability
Single Machine Infinite Bus (SMIB) system: Development of
swing equation - equal area criterion -
determination of critical clearing angle and time by
using modified Euler method and Runge-Kutta
second order method. Algorithm and flow chart.
TOTAL: 45 PERIODS
TEXT BOOKS:
1. Hadi Saadat, ‘Power System Analysis’, Tata McGraw Hill
Publishing Company, New
Delhi, 2002.
2. Olle. I. Elgerd, ‘Electric Energy Systems Theory – An
Introduction’, Tata McGraw Hill
Publishing Company Limited, New Delhi, Second Edition,
2003.
REFERENCES:
1. P. Kundur, ‘Power System Stability and Control, Tata
McGraw Hill, Publications,
1994.
2. John J. Grainger and W.D. Stevenson Jr., ‘Power System
Analysis’, McGraw Hill
International Book Company, 1994.
3. I.J. Nagrath and D.P. Kothari, ‘Modern Power System
Analysis’, Tata McGraw-Hill
Publishing Company, New Delhi, 1990.
4.
.K.Nagasarkar and M.S. Sukhija Oxford University Press, 2007.
