EE 353: Electrical Power Systems
Instructor: Nauman Ahmad Zaffar
Office No. & E-mail: SSE 9-313A, nauman.zaffar@lums.edu.pk
Office Hours:
Tue 12Noon – 1pm, Fri 10am-11am
Year: 2011
Semester:
Spring
Category:
Junior
Course Code:
353
Course Title:
Electrical Power Systems
Credits:
3
_____________________________________________________________________________
Course Description:
This is an introductory course in the field of electrical power systems covering the areas of generation, transmission/sub-transmission, distribution and load. Power systems are complex interaction of these areas and students of this course would study the basics of each area to learn how these are interconnected and controlled for a well managed system. Electrical energy is one of the most convenient forms of energy and is used in many different applications requiring a wide range of power. Most of us depend on central generation and distribution of electrical power which may span geopolitical boundaries but the same concepts can be applied to distributed generation and usage.
This course will cover the fundamental concepts in planning and operation of modern electric power generation, transmission and distribution systems. Topics to be covered include: Power system structure and operation, modeling of components such transmission lines, transformers, generating plants and loads, power flow analysis, dynamics and control of multi-machine systems, system protection, mobile and isolated power systems, steady-state and transient stability, Smart-Grids, Micro-Grids and integration of renewable energy sources into the grid.
This knowledge should help the students in careers and/or research in electrical power generation, transmission and distribution, renewable energy sources, power electronic systems, electric and hybrid vehicles and use of electric motors and generators in an electrical power system.
Course Status:
Elective course for Electrical Engineering majors
Pre-requisites:
EE240: Circuits and Systems
EE330: Electromagnetic Fields and Waves
Goals:
The goals of this course are as follows:
• Develop understanding for analysis and design of power systems
• Know the core elements of power system engineering
• Understand and develop models for components of power systems including transformers, transmission lines and loads.
• Understand the operation of power system under fault and steady state conditions.
• Understand the basics of power system protection.
1

Text book:
Power System Analysis and Design by J. D. Glover, M. S. Sarma and T. J Overbye, fourth edition, Thomson Learning, 2008. ISBN: 978-0-534-54884-1
Supplementary Reading:
Power System Analysis by J. J. Grainger and W. D. Stevenson, McGraw Hill, 2003.
Power System Analysis by Hadi Saadat, McGraw Hill, 2002
Power System Stability and Control by Prabha Kundur, McGraw Hill, 1994. ISBN:978-
0-070-35958-1
Lectures and Examinations:
Two weekly lectures of 75 minutes duration each
Attendance is not compulsory, punctuality is desired
One in-class midterm examination
Comprehensive final examination
Quizzes – ~ 2-3/month
Assignments – ~ 2-3/month
TA for the course:
Ms. Bushra Gull ( bushra.gul@lums.edu.pk
)
Grading Scheme:
Quizzes: 20%
Assignments: 10%
Midterm(s): 30%
Final: 40%
Note: All requests for re-checking must be submitted within 48-hours of announcement of result.
Course Topics:
Lecture Course Topics Text Ref.
1.
Power System Overview with present and future grid structure and issues.
2.
AC Power flow in linear systems, Phasors, Complex
Power, 1 φ and 3 φ circuits
3.
System modeling – single line diagram and per unit system. Ideal transformer
4.
Transformer models, Three phase transformers
5.
Transformer models: continued, auto transformers
Chapter 1
Chapter 2
Chapter 3
6.
Generator/Synchronous
State
7.
Transmission line parameters: Overview and construction, Resistance and Conductance
Chapter 3
Chapter 3
Reference texts
Chapter 4
8.
Transmission line parameters: Inductance, Single phase and Three phase, Series Impedance
Chapter 4
9.
Transmission line parameters: Inductance continued Chapter 4
10.
Transmission line parameters: Capacitance of two wire line, three phase line
Chapter 4
2

11.
Transmission line parameters: Capacitance continued, unsymmetrical spacing, bundled conductors, parallel circuits
12.
Transmission line models: Short and medium transmission lines
13.
Transmission line models continued: Differential equations and solution
14.
Transmission line: maximum power flow, reactive compensation techniques
15.
Midterm 1
16.
Power Flow Analysis: Direct solution to linear algebraic equations. Gauss-Seidel method
17.
Power Flow Analysis – Solution of non-linear algebraic equations Newton-Raphson method
18.
Control of power flow, DC power flow
Chapter 4
Chapter 5
Chapter 5
Chapter 5
Chapter 6
Chapter 6
19.
Transient Analysis – Series R-L circuits, Three phase short circuit, short circuit current and reactance of synchronous machines
20.
Bus Impedance matrix in fault calculations, Bus
Impedance Matrix Equivalent Network, Selection of circuit breaker
21.
Symmetrical components: Definition, synthesis and decomposition, Power in terms of symmetrical components
22.
Sequence networks of impedance loads and three phase lines, machines and transformers
23.
Unsymmetrical faults on unloaded generator: Single
Line-to-Ground fault, Line-to-Line fault and Double
Line-to-Ground fault
24.
Unsymmetrical faults on Power Systems: Single Lineto-Ground fault, Line-to-Line fault and Double Lineto-Ground fault. Sequence Bus Impedance Matrices
25.
Overview of Power System Protection: Instrument transformer, overcurrent relays, reclosers and fuses, directional relays, zones of protection, impedance relays (line protection), differential relays (bus and transformer protection) and digital relays
Chapter 6
Chapter 7
Chapter 7
Chapter 8
Chapter 8
Chapter 9
Chapter 9
Chapter 10
26.
Overview of Power System control (Maybe):
Generator-Voltage control, Turbine-Governor control,
Load-Frequency control, economic dispatch,
Chapter 11
27.
Development areas – Smart and Micro Grids (Maybe) Handouts
3