Δ -y, auto- • overall network calculations

30
EE 5223 - Lecture 22 Mon Mar 1, 2021 Ongoing List of Topics: URL: http://www.ece.mtu.edu/faculty/bamork/EE5223/index.htm Term Project - projects in process of being approved. Follow timeline, see posting on web page Weeks 6 thru 9 - develop formal outline w/complete reference list Protection fundamentals (cont’d): Again — overview of bus diff, xfmr diff, synch check, capacitor banks, generators, motors, etc. (take a quick run through Ch.6, also Glover & Sarma, Ch.10). Sequence networks, fault calcs Transformers: Y-Δ, Δ-Y, Auto-Δ Overall network calculations

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Page 1: Δ -Y, Auto- • Overall network calculations

EE 5

223

- Lec

ture

22

Mon

Mar

1, 2

021

Ong

oing

Lis

t of T

opic

s:

•U

RL:

http

://w

ww

.ece

.mtu

.edu

/facu

lty/b

amor

k/EE

5223

/inde

x.ht

m

•Te

rm P

roje

ct -

proj

ects

in p

roce

ss o

f bei

ng a

ppro

ved.

Follo

w ti

mel

ine,

see

pos

ting

on w

eb p

age

•W

eeks

6 th

ru 9

- de

velo

p fo

rmal

out

line

w/c

ompl

ete

refe

renc

elis

t

•Pr

otec

tion

fund

amen

tals

(con

t’d):

•Ag

ain

— o

verv

iew

of b

us d

iff, x

fmr d

iff, s

ynch

che

ck, c

apac

itor

bank

s, g

ener

ator

s, m

otor

s, e

tc.

(take

a q

uick

run

thro

ugh

Ch.

6, a

lso

Glo

ver &

Sar

ma,

Ch.

10).

•Se

quen

ce n

etw

orks

, fau

lt ca

lcs

•Tr

ansf

orm

ers:

Y-Δ

, Δ-Y

, Aut

o-Δ

•O

vera

ll ne

twor

k ca

lcul

atio

ns

Page 2: Δ -Y, Auto- • Overall network calculations

•Pr

otec

tion

fund

amen

tals

in p

repa

ratio

n fo

r nex

t EE5

224

rela

ying

labs

: •

Gen

diff

87G

- qu

ite s

impl

e, c

onne

ct C

Ts s

o cu

rrent

flow

s in

“do-

noth

ing”

loop

thro

ugh

Res

train

t ele

men

ts (r

esul

ting

in n

ear-z

ero

curre

nt th

roug

hO

pera

te e

lem

ent).

Use

equ

al (p

refe

rabl

y fu

ll) ra

tio w

ith a

ll C

Ts.

Diff

eren

tial

slop

e of

trip

cha

ract

eris

tic is

rath

er fl

at c

ompa

red

to 8

7T b

elow

. Ex

ampl

esh

own

of h

ow n

ot to

con

nect

CT

seco

ndar

ies.

Xfm

r diff

87T

- a)

mus

t con

nect

CT

seco

ndar

ies

to p

rovi

de p

rope

r pha

se s

hift

so th

at re

stra

int c

urre

nts

flow

ing

thro

ugh

rest

rain

t ele

men

ts a

re in

pha

se; b

)re

lay

setti

ngs

are

used

to c

ompe

nsat

e fo

r pri

volta

ge ra

tio a

nd C

T ra

tios.

C

T ac

cura

cy p

robl

ems

can

be a

big

con

cern

due

to h

avin

g to

use

less

than

full

CT

ratio

, and

hav

ing

Pri a

nd S

ec C

Ts w

ith d

iffer

ent a

ccur

acy

leve

ls.

Diff

eren

tial s

lope

of t

rip c

hara

cter

istic

can

be

10%

, 15%

, 25%

to a

llow

for

mis

mat

ch (m

easu

rem

ent e

rror)

due

to C

T ac

cura

cy p

robl

ems.

Page 3: Δ -Y, Auto- • Overall network calculations

EE 5223 Term Project (updated: Feb 18, 2021) Spring 2021

A term project shall be done in lieu of a final exam. Teams shall be of 3. Team requirement: minof 1 MS and 1 BS student/team. The objective is to actively figure out and explain theunderlying concepts, key relationships and equations, and then design, develop, implement, test, anddocument the engineering details. Goal of report: a tutorial to document technical background, getanother engineer up to speed on what you have done, explain the implementation, and present theresults.

The project you choose:• must be of topical interest,• must relate to course material of EE5223. • must demonstrate level of mastery and application of the related concepts and theories, at the

level of the EE5223 course. • includes a detailed literature search (applications magazines, standards, and journal papers) and

Reference List, with salient concepts summarized in Background section of report. You’ll alsoneed to do a technical review of the journal paper that is most related to their project.

• length of body of report: approximately 10 pages of text (not including figures, tables, equations,or appendices).

Time line and required submissions are as follows. All deliverables contribute to the grade of yourterm project. Approximate schedule is: • Week 6 (Friday): submit short e-mail with idea(s) requesting instructor feedback. • Week 7 (Friday): submit formal outline of project and list of key references. • Week 9: submit updated outline of project and complete reference list.• Week 12: Submit rough draft of project report including a working initial model/system. • Week 14: Submit final report/deliverable.• Finals week: be prepared to present/demonstrate project.

Report Outline/Table of Contents (copy and paste this to start your Table of Contents):• Title Page - Include project title, course name, authors’ names, revision date• Executive Summary (not needed for initial draft)• Table of Contents (use as “working outline”) • Statement of contributions by each team member, signed in agreement by all. • Introduction (brief overview of project: problem area, motivation, overview of project)• Background

• literature search, most important references• Presentation of key concepts connected with project• Identification of existing voids or weaknesses, and resulting opportunity

• Proposed Approach and Application• Overview of basic idea that you will develop and implement• Development and implementation details

• Implementation (may not be complete in draft versions)• Results and Performance (in earlier draft reports, this can be the Expected Results)• Conclusion • Recommendations for Continued Work• Reference List (IEEE format, numbered [1], [2], etc, in order of first author’s last name)• Appendices as required to document details. Include journal paper & review as one appendix.

Page layout: • Font: 11-pt CG Times w/1.25-1.5 line spacing; or 10-pt comic or ariel w/1.0-1.25 line space• Page layout: 1" margins, include page numbering

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