Note: This is your At-a-Glance overview
of the planned course for the whole semester.
Weekly reading assignments, supplemental notes, and links to lecture
notes (updated after each lecture) are posted.
Links to homeworks are also provided, check Canvas to confirm
submission details.
Spring Semester 2023
EERC 214 - M,W,F 2:05-2:55
pm
Course Syllabus | Text
& References | Pre-Req Material
| Useful Web Links | Grades to Date | Term Project Teams
Updated Through: Week 12
|
Week - Reading
|
Lecture Notes |
 Homework, Tests, Solutions, Deadlines |
|
1 - Ch. 1,2,3,10 |
|
Introduction, Startup, Philosphy
of System Protection, Bus configurations, Substation/Equipment Photos |
|
Jan 16th
|
MLK Day
- No Lecture (Lecture 4 does not exist). Protective device numbers, Instrument Transformers | Basic Info on MR CTs Assignment
#2 - Probs. 3.1, 3.2,
3.3 | Due Jan 24th, 9am (short problems,
transformer connections) |
|
|
12.5 & 12.6 |
|
Assn #3B: Symm Components - Due Feb 21st, 9am (in
teams of 3) | 3-Ph Xfmr Phase
Shift Tutorial Assignment #4 - Due Feb 14th, 9:00am Example of radial coordination for ground faults | Video of previous | Assignment #5 - Due Feb 21st 9am |
|
4 - Ch.3,4 |
|
Effective burden on CT, CT stds, MR CTs, CT equivalent circuit |
|
5 - Ch.3, Ch.5 |
|
Assignment #7 - Prob 3.4 & 4.1 | Soln - Due Mar 14th, 9:00am (Winter Carnival - Lecture 15 does not exist) |
|
6 - Ch. 3, 5, 6 |
|
Misc Topics: Synch Check Relays (25/27), more on reclosing.
Reclosing on 69-kV
3-terminal line V-I relationships during fault, intro to 67 relay application Polarization, Directional Phase & Ground Overcurrent Concepts. Assignment #8 (due latest 9am Mar 21st) Wrapup on 67 relays, intro to distance relaying. |
|
7 - Ch. 6, Ch.12 |
L19 - Feb 20th L20 - Feb 22th L21 - Feb 24th Demeny Notes Help Video 1 Help Video 2 SC Calc Video |
Near-end faults, polarization memory, CCVT subsidence
transient, limits of VT connections for zero sequence polarization. Settings examples for 21 relay schemes. (Guest lecture by Jon Larson, SEL). Related Conference Paper. Basics of impedance protection More on distance/impedance protection, intro to differential protection Guest Lecture: Kevin Demeny. Topic: Arc Flash Hazards, Mitigation, Protection Tom Ernst, Minn Power. Guest Tutorial on Aspen. Arc flash hazard issues. Help Week7A: including pre-req review on symm components in context of homework 4.1. Help Week 7B: general review of symm components, Zp <=> Zs, Sequence Networks Short Circuit Calcs - Dr. Bohmann Fault Tutorial, repeated from EE5200 SEL Tutorial p1 | SEL Tutorial p2 - Very useful summary of short circuit calcs and use of sequence networks! Term Project - Detailed Table of Contents (i.e. work plan) and reference list - due Fri of Week 9. |
|
 8 - Ch.7
Grounding Ch. 4,12 Distance/impedance relaying |
L22
- Feb 27th L23 - (Sp'11) L24 - (Sp'11) L22 (Sp'09) L23 - Mar 1st L24 - Mar 3rd Help Video 3 Help Video 4 |
Fault Calcs for 2-winding
transformers, 3-lines, phase shifts, Fault Calc Examples More on sequence networks - transformer phase shifts, zero sequence behaviors. Fault Calcs, Sequence networks, fault contributions ; Assn#8A - ResonantGrnding - team discussion, Mar 24th. Help video on transformer phase shifts: grid tie, phase shifts, delta-wye, sequence voltages and currents. Prof. Høidalen - Protection with isolated ground Prof. Høidalen - Protection with resonant grounding Review: Sequence Network example, 3-winding transformers Review: Fault current contributioins, V and I at relay. Winding currents, zero seq currents in 3-winding xfmr Help Week8: observations on fault currents, hints on Hmwk 8, voltage profile along faulted line. Impedance Relaying, R-X diagrams, Zone 1, 2, 3, reach, forward & reverse. Basic distance relaying concepts; line differential protection, bus protection Pos/Neg/Zero squence networks for 3-winding transformers, zero-squence polarizing sources |
| |
March
6-10th
|
Spring Break - Make a clean
break from your work and have fun ! |
|
|
Midterm will
consist of grades on two upcoming homework sets (worked individually).Â
Details to come. Transmission Line relaying - read §6.5.5 - 6.7, §12.12 - §12.16. Assn#9 - Due latest 9am Tues Mar 28th Special issues related to line protection: Zone 2 and Zone 3, SIR, Ground potential rise Line protection issues (cont'd): three-terminal lines, series caps. Tom Ernst Guest Lecture (play video) - Setting Relays for Line Prot., File 1 | File 2 | File 3 |
|
|
10 - Ch. 4, Ch.9 |
|
Assn#10: Probs 4.2,
4.3 a,b,c and 4.4 - Due Tues Apr 4th 9am.
Help: Notes (Video also on Canvas)
|
|
11 - Ch. 9, Ch.10 |
|
Differential protection
of Transformers (87T) 87T Applications Example 87T applications example, mismatch, CT saturation, Protection of Gnd Xfmrs & Shunt Reactor Bus Protection - 87B; Bus Prot Homework #11 - Prob. 10.1 due Tues Apr 11th 9am 87B Applications example | video: moderate-Z vs. high-Z. Differential protection of Generators (87G) |
|
12 - Ch. 10 |
|
Intro to Cap Bank Protection
Applications;Â Photo of 115-kV Cap Bank (2 banks, w/current-limiting
reactor) Guest Lecture: Tom Ernst, Minn Power (posted on Canvas) Cap Bank Protection | IEEE C37.99-2012 (download from Xplore) Cap Bank Wrapup; Synchronous Switching Submit working prototype (preliminary results) and rough draft of project report - Mon Apr 12th, 9am.  |
|
|
Transient Overvoltages due
to Shunt Cap Bank Switching: Tutorial | ppt Safety (cont'd); Relay impedance; Generator grounding; Grounding Transformers |
|
|
14 - Ch. 14 |
|
Last Homework - Optional, may be submitted
for extra credit. Complete by end of week (may be possible
to request extension to Thurs Apr 29th, 5pm if no conflict with finals).Â
[ Note: do as individual.Â
View "Hmwk#12
Office Hr" video / notes
for most/much of solution and hints.] Semester
Wrapup. Â Paper
on DSP methods for distance relaying ;Â
SCADA
Protocols; |
|
Finals Week |
Mon Apr 24th |
Final Exam Timeslot / Term Project Presentations - Location: EERC 214
(3:00 - 5:00pm) Live Zoom link to online Students. |
Course Description and Learning Goals:
Students who complete this course will have gained a theoretical and applied
understanding of power system protection. The performance
of
instrument transformers,
transducers, protective relays, and circuit breakers
is first addressed. These devices are then integrated
into coordinated
protective systems
for generators, transformers, transmission lines,
reactors, capacitor banks, system buses, etc. Although basic
protection concepts
are hardware-independent,
the application of electromagnetic, solid state,
and microprocessor-based relays will also be discussed.
Trade-offs
between reliability,
selectivity, speed, simplicity, and economy are
emphasized. A hands-on lab project, using state of the
art equipment, will also be
completed during
the course.
Topics Covered (depending on priorities and available time):
