Logistics of the Course can be found here:
Matlab Tutorials of the course can be found on Youtube.
Matlab Codes of the Tutorials can be found on Github: https://github.com/luningluning/ECE451
Logistics of the Course can be found here:
Matlab Tutorials of the course can be found on Youtube.
Matlab Codes of the Tutorials can be found on Github: https://github.com/luningluning/ECE451
For non-NC State students who want to take our course, you will have to pay us the tuition and fees.
If you are interested in it, please contact
Dr. Linda Krute, Director, Distance Engineering Education Programs, North Carolina State University, Raleigh, NC 27695
Phone: 919.515.5440 Fax: 919.513.4623 Email: ldkrute@ncsu.edu
2020 Fall Class Schedule (M/W 13:30 p.m. - 14:45 p.m. August 10 - Nov 13 2020)
Instructor: Dr. Ning Lu, Associate Professor, Department of ECE, North Carolina State University
Office: 100-29 Keystone (http://research.ece.ncsu.edu/nlu2/contact/)
Email: nlu2@ncsu.edu
Teaching Assistant: TBD
Course Time & Place:
In-class (MRC313) MoWe 1:30PM - 2:45PM
ZOOM: live online lectures on Monday/Wednesday (1:30-2:45 p.m.) Attendance is required.
You need to take a quiz after each lecture for attendance check.
Office Hours: TBD
Course Description
The course will help students understand how power systems are modeled both at the distribution and transmission levels. The course covers modeling of generators, transformers, and transmission lines. The focus of the course is on long-distance transmission of electric power with an emphasis on admittance and impedance modeling of components and system, power-flow studies and calculations, symmetrical and unsymmetrical fault calculations, economic operation of large-scale generation and transmission systems. A special emphasis is placed on applications of computer-based methods to power-system problems.
Specific Outcomes of Instruction:
At the end of the semester, students should be able to:
- Model and analyze power system networks
- Understand the market-based power grid operation and the production-cost based power system planning procedures
- Calculate short circuit current and voltage and understand how to determine the operation limits of power system components.
Prerequisites
ECE 305 or equivalent coverage of the following prerequisite topics:
Steady-state analysis of single-phase and three-phase circuits
Principles of electric machines, transformers, and transmission lines
Per-unit system and representations
Textbooks
Required: Power system analysis. Grainger, John J. and William D. Stevenson. New York: McGraw-Hill, 1994.
Reference: Power System Analysis. 3rd edition. Hadi Saadat. PSA publishing.
Grading policy: Only the University approved reasons will be accepted for missing an exam (See http://www.ncsu.edu/policies/academic_affairs/pols_regs/REG205.00.4.php).
A make-up exam will be administered at the mutual convenience of the student and the Instructor.
In all cases, signed documentation must be provided to the Instructor and attached to the make-up exam in order to obtain credit.
Homework: 20%; Project: 20%; Quiz 1&2: 20%; Final (in class exam): 40%.
2 quiz, 1 final exam, 1 class project
10 out of 12 homework assignments (HW#1 and HW#12 are optional for bonus points)
Bonus points cap at 2-points for in-class quiz participation
Reading Assignments are given in the Lecture Schedule. Reading the assignments before coming to the lectures can be very helpful.
Software
Matlab and Simulink
Powerworld (NC State Students can download it at: http://www.wolftech.ncsu.edu/files/powerworld/)
Academic Integrity:
Work in this course is to be done under the Academic Integrity Honor Pledge: "I have neither given nor received unauthorized aid on this test or assignment."
Students must abide by the Code of Student Conduct, http://www.ncsu.edu/policies/student_services/student_discipline/POL11.35.1.php
Evidence of copying, including copying of source code, or any other use of unauthorized aid will be investigated and potentially referred to the University judicial system as a violation of the Code of Student Conduct.
The minimum sanction for a violation is a zero on an assignment. Recycling of projects from another class will be considered an academic integrity violation.
Students with disabilities:
Reasonable accommodations will be made for students with verifiable disabilities.
In order to take advantage of available accommodations, students must register with Disability Services for Students at 1900 Student Health Center, Campus Box 7509, 515-7653.
For more information on NC State's policy on working with students with disabilities, please see this page (http://www.ncsu.edu/provost/hat/current/appendix/appen_k.html.)
Civility in the classroom:
Students are expected to assist in maintaining a classroom environment that is conducive to learning. Inappropriate behavior in the classroom that leads to the distraction of others shall not be tolerated under any circumstances.
Course Learning Objectives:
Upon completion of this course, students will be able to:
Build basic understandings on modern power system operation and protection
Master basic modeling technics for power system analysis
Modeling of power system apparatus (transformers, motors, transmission lines)
Single and three phase systems
Power flow analysis
Bus admittance matrix
Power flow solution
Economic Dispatch and Unit Commitment
symmetrical and unsymmetrical fault calculations
Bus impedance matrix
Short circuit current calculations
Module 1: Power System Network Models (7 Lectures)
- Introduction 1: Introduction of the Course
- Introduction 2: 1-phase and 3-phase Circuits
- Generator 1: Real Power Regulation
- Generator 2: Reactive Power Regulation
- Transformer 1: 1-phase Transformer, Losses, and Voltage Regulation
- Transformer 2: 3-phase Transformer and Per Unit Value Calculation
- Transmission Line Models
Module 2: Power System Operation (11 Lectures)
- Admittance Matrix 1: How to form an admittance Matrix
- Admittance Matrix 2: Handling of mutually coupled branches
- Power Flow Calculation 1: Problem Formulation
- Power Flow Calculation 2: Gauss-Seidel Method
- Power Flow Calculation 3: Newton-Raphson Method
- Economic Dispatch 1: Generator Cost Curves and Bid Curves
- Economic Dispatch 2: Market-based and Production-cost based
- Economic Dispatch 3: Applications
- Unit Commitment 1: Problem Formulation
- Unit Commitment 2: Priority-list Based
- Unit Commitment 3: Priority-list Based Dynamic Programming
Module 3: Power System Fault Analysis (8 Lectures)
- Impedance Matrix 1: How to calculate impedance Matrix?
- Impedance Matrix 2: How to calculate short circuit current?
- Symmetrical Faults at Generator Terminals
- Symmetrical Faults on a Bus
- Symmetrical Components
- Sequence Networks
- Unsymmetrical Faults 1: single-phase to ground
- Unsymmetrical Faults 2: phase-to-phase, phase-to-phase-to-ground
Class Evaluation
Webwork instructor link: https://webwork.wolfware.ncsu.edu/webwork2/
Instructor Link: http://classeval.ncsu.edu/cedashboard/index.cfm?action=main.instructor
Students may complete their survey here => http://go.ncsu.edu/cesurvey
Class Resources
2020: Class folder
Instructor monitoring site for Webwork: https://webwork.wolfware.ncsu.edu/webwork2/
To record the missing lecturers: Go to one of the mini studios in 247 page Hall, 2090 EB2, 3004 EB3.
WebWork for homework assignment
Overview of webwork: https://ncsu.service-now.com/delta?id=kb_article_ml&sys_id=0a8f66431b5fe4503303ca292a4bcb51
Link to ECE Webwork information - instructions for doing usual admin tasks
Link to the explanation of error checking in Webwork, if students are interested
https://docs.google.com/document/d/16tS8bqWQs1bV7bKg9TftFEdobDQwltKPo1UHWZfWbe8/edit
Instructional technologies (learntech@ncsu.edu)
Hardware and software needs (contact: Linda Krute)
Power World can be downloaded at: http://www.wolftech.ncsu.edu/files/powerworld/. Note that Powerworld only works on PC.
Lecture notes from other professors
Prof. Ned Mohan’s cup.umn.edu’s website at http://cusp.umn.edu/power_systems.php
Prof. Tom Overbye’s lecture notes at https://courses.engr.illinois.edu/ece476/fa2011/
In Hadi Saadat’s book, you can find Matab codes for demo the concepts taught in class.
Matlab/Simulink
Powerworld Materials
ECE451 Training Materials prepared by Xiangqi Zhu (can be downloaded from this page)
Generator Cost Curves (Slide 13&14) (Can also be downloaded from this page.
You can download PowerWorld to your personal computer. Note that it only works on Windows and will not work on Macintosh.
An overview: A Quick Start
Basics 01: Tutorial For Solving A Basic Problem
Example 1. How to build a three bus system (34 minutes)
Example 2. How to build a three bus system (24 minutes)
Tutorial 3: Power flow and voltage control (65 minutes) (More advanced)
Advanced 1: Optimal Power Flow
Advanced 2: Modeling Using Scripts
Advanced 3: Power Flow and Voltage Control
Advanced 4: Fault Analysis
Advanced 5: Lecture Notes - ProblemInterface and Common Tools
What is real and reative power-part I? (an excellect analogy)
Electric Potentials (1) (a cool 3D demo. I like their illustrations)
resistance, capacitance, and inductance
Aditional Notes (Part I) by Rami Fayez
Additional Notes (Part II) by Rami Fayez
Electric PE Exam - Symmetrical Components (part 1)(Contributed by Haley Craig)
Electric PE Exam - Symmetrical components (part 2)(Contributed by Haley Craig)
Electric PE Exam - Symmetrical components (part 3)(Contributed by Haley Craig)
Solving three-phase phase problem (contrributed by Michael Smith)
Unsymmetrical Line Fault example, Line to Line Fault, Line to Ground Fault, Transmission Line Fault in real life. (Contributed By Alex Bowling)
You can download the PowerWorld software from the NCSU website.
Power Flow Analysis in Powerworld (Contributed by Brittany Franklin)
Chapter 101: Renewables:
Contributed by William Bumgardner. This one came out of the IEI here at state.
Contributed by Thomas Alexander Barret. Here is a video that is good introduction to solar integration in households (its from south Africa but still lots of good information)
Chapter 102: Electrical Vehicles Articles
1. Contributed by Brittany Franklin: How electric car charging works.
2. Contributed by Jose Zavala.
a. Looking at the future of electrical vehicles
b. The past, present and future od an electrical vehicle
c. The projected stock of electrical vehicles
3. Contributed by Mackenzie Dougherty
a. National annual values for almost all energy sources used in the US
b. Specific data related to the amount of vehicles on the road sorted by fuel source
c. Charging Locations, equipment, and regulations in NC for Plug-in Electric Vehicles
Chapter 103: Energy Efficiency
1. Contributed by Brittany Franklin. ABB equipment effects on Power Grid Efficiency and Reliability ()
2. Contributed by Shaunak Turaga.
The Energy Freedom Act introduces limited market competition for North Carolina’s electricity customers, who are currently required to purchase power from the monopoly utility that serves their community. The legislation would for the first time allow North Carolina property owners to purchase electricity directly from a renewable energy company of their choosing. The company would own, operate and maintain a power system installed on the property owner’s roof or property. This is an interesting bill as we may be able to pursue such businesses as potential entrepreneurs!
When you enter you address, Project Sunroof looks up your home in Google Maps and combines that information with other databases to create your personalized roof analysis.
c. Power Factor
Many times we use power factor but don't understand how this is significant in real world applications. The link shows data for PF improvements and things to consider.
3. Contributed by Sean Ketring
a. MIT Free Online Course in Electric Power Systems
b. Youtube lecture series which covers many topics of our class
4. Contributed by Robert Tucker
a. Introduction to Protective Relays
b. Live Removal of Circuit Breaker
c. Arc Flash Study (Very important and commonly conducted study in the power industry):
5. Contributed by Nabil FARISS
a. Germany is #1 in the World for Energy Efficiency
b. Solar power solutions - Everything you need for sustainable success
c. Smart Grid Denmark- the intelligent power grid of the future
6. Contributed By Audra DeRome:
1. A video on symmetrical components
2. A video on three phase transformers
3. A video on wye delta transformations
7. submitted by Thomas Alexander Barrett. ABB Center for Smart Grid Excellence: Here are two videos that show you the center and how it can do fault detection and correction in real time. Its great to see how in the future how we would do power flow, like seeing the Duke Energy location this is a great place to check out. First the overall tour.
8. Demonstration of Fault detection
9. Submitted by Abraham Aslami
a. How to measure voltage, current, and resistance
b. How to make a solar cooker and how it works:
c. Faraday cage, how it works demo
10. Submitted by Shawn Lynch
ABB Power System Protection Webinars
https://www.youtube.com/watch?v=VlJ-TfKDdQk&list=PLOviLi0WDsq6coTBsadR8k6VsXesxXK2V
Note that the following material is not the course material. This is a website under deveopment and the code is untested. All the course related material has been uploaded to the MOODLE site and can only be accessed when you registered to the class.