ECE 421
Electric Energy Systems
Fall 2017

Homework #2 and the Slides on 9/20 posted.

Meeting Time and Place:        10:10-11:00AM on Monday, Wednesday & Friday at MK405

Aug 23, 2017 – Dec. 1, 2017 (40 Lectures)

Instructor: Kai Sun

Contact information: kaisun(at)  865-9743982

Office hours:  Wednesday 11:00-12:00 or by appointment @ MK612

GTA: Weihong Huang (whuang12(at), MK207)


Course website


             Past course website: Fall 2014


Course Texts/Materials/Resources



ECE 316 – Signals and Systems II

ECE 325 – Electric Energy System Components


Course Description

This course will cover fundamentals of electric power systems, including basic principles, the per-unit system, modeling of generators, transformers and transmission lines, power flow, and optimal dispatch. Some basic ideas on power system reliability and security will be introduced. There will be moderate work of programming in MATLAB or using professional power system simulation software for power system studies. Students are also encouraged to review literature on recommended emerging topics to gain broader knowledge on, e.g., renewable energy resources and smart grid technology.


Course Objectives 
Upon completion of this course (and the pre-requisites to this course), every student should have gained: 

·         An understanding of basic principles and models on electric power system components

·         A familiarity with modern computer-aided methods for power system steady-state analysis

·         Knowledge in emerging power system techniques.


Course Outline

1.      Overview of Power Systems and Electric Power Generation (2-3 lectures) (sides: syllabus, 1, 2, notes on Norris Dam)

2.      Basic Principles (4-5 lectures) (slides: all; Quiz 1)

3.      Generator & Transformer Models, and the Per-Unit System (5-6 lectures) (slides: 1, 2)

4.      Transmission Line Parameters (3-4 lectures)

Midterm Exam in mid-October (closed book covering Sections 1-4)

5.      Line Modeling and Performances (4-5 lectures)

Project 1 Presentation in late October (teamwork on technology review)

6.      Power Flow Analysis (6-7 lectures)

7.      Optimal Dispatch of Generation (3-4 lectures)

Project 2 Report due in early December

Final Exam in early December (closed book covering Sections 5-7)





Due Date


·         Problems 2.1, 2.2, 2.5, 2.6, 2.7 on Saadat’s book

9/15 (Fri) in class or by email to GTA


·         Problems 2.8, 2.9, 2.14, 2.15, 2.16

·         Do we have  for Y-connected loads?

9/22 (Fri) in class or by email to GTA


A few course policies (IMPORTANT: PLEASE READ)

  1. 6-7 short quizzes respectively at the ends of sections (informed in advance)
  2. Two closed-book exams in mid-October and early December, respectively.
  3. 7-8 homework assignments will be given in class and posted on the course website. Students may work together in groups on homework but each student must hand in your own solution. You would need to finish them all in order to take the final exam. A submission late by 1+ week receives up to 80% points.
  4. Project 1 will be teamwork to review emerging technologies on power and energy systems, and project 2 will be individual software work related to power system planning studies.

Homework:                  20% 
Quizzes:                       10% 
Course projects (2):      30% (15% each)
Exams (2):                    40% (20% each)
In-class Participation    5%

Total                            105%


A (90 and up), A- (85-90) , B+ (80-85) , B (76-80) , B- (72-76) , C+ (68-72) , C (64-68), C- (60-64)