Whats Behind Transformer Field Testing (COPYRIGHTED)

7/17/2019 Whats Behind Transformer Field Testing (COPYRIGHTED)

http://slidepdf.com/reader/full/whats-behind-transformer-field-testing-copyrighted 1/8

e

n l ssify

t st

f ilure modes

power

tr nsformers ording

t

tr nsformer ompo-

nents


http://slidepdf.com/reader/full/whats-behind-transformer-field-testing-copyrighted 2/8Figure 1. Breal:down

of dielOClric ISIom

io. powo,,,

•

..rom..r

<oIum

Powertransformer predictive maintenance field testing

What s

behind

transformer

field

testing?

• Goom.t y

winding•.

~ m ~ ·

clung< ofgoomctry bct>.rrn wioo;ng<

and wioo;ng<

to

core. distance<

•

1nsuU ti Y tcm.

Oil

pap<r. mntami·

n:100n.

w>tcr

inge , di<lan= .grins

lhis component

u.<U2l1y Jdi

life

ofthc

power

lran.,fimll<r

• Ekrtric Circuit. :opper

{Who:

contact

pmblcm

. t

huMinll

jol

wiooings,

,,,ldrd md ool<l< ,d ronr>cctiolu, t l

• MagndU; Cim<it. SIOO. h><ening

We = dawfy

_

lure mode<

in

po

...

lramformcn

cording to their

difli.-=Jl

oomp< Tl<TIl>. From

a

pr>ctical andJi<bcti·

c oI pOOll of ,,-, is hdpful to

divide

the

transformcr iT

t ><

follo....ing compo

0CTTh and =ociottJ

potmtiaI

fautt..:

I\ IT

tnn<formcrs

aT< k<y ,,<ct.

in d«:-

lric

CTl<.TS g. ,.,ration, trarnmi<o;;on and

dimibutioo J l c m ~

.. d aJ.o

an impor_

Lint clement m the indu.try. In onlcr

to

get

TTl -..-imum ice rrli hility in

this

CTioc.l p o n n ~ it

i

Tl<C< lS>ry

to

p<r_

form

- <d>cdokd ..... ofwiuhl< Ji.gno<is

kdmiqucson

II

tra ,fimncr.

ntrodu tion



Field testing

1he

d<ctric

utility :rnJ

d<ctri<:

p 'TT

in_

duuri<> ncrJ dcfioc their <tr:attgy:rnJ

maintrnanc< polk)' for their COSIly power

tr.m<formcr u < c t ~ Tod. , there arc

. .

oc

,..,_Iioc «t.

tIuI

will

h l

to

.mi<. v< thi>,

hut most nf

the

chcds

ITly,.., rrgular

oIf_

lin<

mn<Urm>rnts

Today,

there

are

many on-line tests that

will

help

to assess transformer

condition,

but

most of decisions

are

based on off-line

measurements

T.blo

1. orr-Ii . lor _ ....

nstorm.r ~ . I d . . .

ing

In,u lrtlon,

[)LTC, Bu.hmll

& Wirw;lmllf

PDC

(l'nbrization and [xpolarir.llinn

CUlTent.) an aa:q>«d ,,) In rlcttrmine

the p.r.nnett oftll<

mndcl

from Fig. 3

H ,

chargeldischarge

<OlTI. I1ts IT

m<a_

,IT< with th< .id of • DC

'r<e and

plotted in • <orrrnt

'-

tim< graph. Emn_

<ive ,k u..hem dnr.e in anal)1ical mo

dcio

to

,d ' 'Il<

gromrtry:rnJ

pmpertics

ofoil ,he>< <OTTrnts

taking

al , ><count

ofkmpcraln '. Whilst

th alit an csti_

malioo

of mni 'e

in

th<

insulation,

th<

main hrnctit

that

pmviJrudi.gnO<is

nf

the

did<rtri<: <r>mpnocrll• •nd the poo;_

<iNe

origin

nf pmbIcrns if

they ,i<ls in

that pan

of'il< tran,fi 'l1<r.

mination

or

hr<:okdowns. Te<l<,., usuall),

plot

the

I

R time

and .Iso t . h • rca_

di

ng of

'h e 'P.<itaoce , :line ell:

Advanced insulation testing (DC)

1he 1 ;,,,

t<chniqocs

below weTe

devrl0l'ed

get an in<ight into

oi]-p'p

insulation

hrn 'ith good IR.nd PI '«ults.l 'weT

tr.m<formcrs

<al l

h.w a

Jrgraded

insula_

tinn with

moi.<tn ,

Of mntaminatioo

,hal

'ill

aIfoo

thei, ludim<.

In the tran<lOr_

mer,

it

i,

paper lifetime 'hal U<Ua1ly

limits

tr.m<formcr life. and thc>e de: £st, '

~ > o I s thai

<al l

hdp in

..

i n g ~ mndi_

'00

..

DIM

circuic Not::

FDS ( ~ S p o c t r o > c ' Y ) , Tan 6 to

windW>p Co Co.),

HV8ritation

..

,..,,,

T.n

6to

1 lIing. (CliO)

&

collar

Turn. ratio l

= ~ a t i o n co nt

In l T a d ~ i o n a l

imul.tion =istance

tc&_

ing,

the

In ,lotion Re<istanu

(IR,)

hct_

ween winding<

.nd

bctwun

e.m

in_

d ing and the ground i, m<. ,IT< . Te

instrum<nts US<

•

DC

'lug< (typ.•;

kV

de).

The

inrnlatioo

,,,In<,,

'corded

,wer time, indirning the I minute

.nd

10

minute (IR,,)

I .

From the

the

Pol.rization Ind<, (PI) <alrul 'd . .

P I ~ I R,o/IRL Whil the IR ,

..

I , h .w •

mng d<p<nrlcney em lrnlperalrtre,

the

poI.,;,..

tion ind<> IT< uca ,hi. d<p<n_

rlcn<y.

1hi' m<a<uITmrnt <al l

rlctcrt '_

dow pmhlmu.

<n<:h

.. . moi,tuno, mnta_

Basic insulation testing

(DC)

the '''>ei ,d > f tw> . to llimplify its '

fi,,-diagno<i.:rnJ tn-oding

l Iuic i

.....

lMIon:

roc

rocov. ,. v < > 1 ~

tn.ul.,ion

,.,i, '

polarization

inde , Co COft' to

IlfO<Jnd

~

i

.....

I.aon:

Off-line testing

Tahic I

li<ls the ,uodard

off_lin< tt<ls

., :lilahlc fi,,- pow<r trar formcr>. li>ohy

there . instruments

to

condoct .l l the

£st,li<l<d

in

thetahlc.

Som<tim<s

• • ing\<

irn rumrnt

'ill

inchM < mo'

of

t<>1:ll ,,;th

~ , . 8 a > o l i .. .

l I o l d ~ n g o l . _

,ranslc<. . .r going into ' 50 M iA)

-

Winding

. . . . .

t.new.

St.>ticldynamic

(OlTQ

FIlA: Fr RCY R ~ , f > O ~ Analy>l.

Short circuit i n t p M a n < o / V < > m . g ~

RVM

(Remver)' VnItag< Mcosurement)

test plot>

,he ro:mTIf

'lug<

(vertically)

agairn tim< (horizontally) 1he tim<

I

Cpl

ICp2 ICp3 ICp4

t INbgo rnI5tanaI,

~ i o ' ' ' ~ c a p o c i t a n a r ,

.00

,

. . i Rp/Cp

om<Jlato tho 'l MIont

dieloctric

polarilaion

cim.it

0( JlOp«-oiI.

insoIaIion

3. EquiwIant dlagn.m 01 tho

dioIoctric

c i r c u ~

01 . t1ansIormor

Cg

Rpl

R'

Rp2

n

the transformer,

it

is paper

lifetime

that

usually

limits

transformer

life, and

advanced

insulation

tests are tools that

can help

in

assessing

its condition



F i g I n ~ To

. or

from • RVM

t

witt>.

timo

coo .nt

that

is

too low. Timo Coo .nt

•

n: M limo

01

RVM plot c ,

Winding resistance: static

(DC)

Final =uIt. must be lrnlpcrature norma_

li:l£d

to

allow comparison trrnding

ti l

pr<Vi<

....

~ i s t o r i c a l mcaAlITm<1Tts aoo

ti l

the original

bctory k<t

u lt s. it

I.

bet_

tcr

to

presrnt

<ingl< pha>< ,-.locs

rube,

than mmpositt (pha. , to pha><)

,-al0CS;

the.< give a

hcttcr ond=tanding of

the

, ;gin

of

I ,ihle

fanh

II is

dillirult

ti l

idrntify tbe

cau , of inding ,«i, tan«

discITpanc)'

from the

rnc=mnrnt< 010·

n<. roo.-

mnn<ctiorn on ..

iooinll or

tap

c h a ~ ; ; c r

and <lroTt.

can be Jctcrmincd

hut

thc). all r 'JOir<

additionaltt<ting

or

plr) ;

cal i ~ v e < t i g a t i o o . A h h o l l g ~

tM.ttot

i,,;m_

pic

in concept.

it can

hcromc

mmpkx

laW

tr=<lOrm<T1l whcIT the mix of

\ ry

low

re<i<tiv<,.,.]11 <

with

~ i g ~ induetooc«

,«ults

in long

dd l

...

hiht

the reading<

stabilise.

lote, in

tM.

paper.

La

O(;RE wor < on

dkIcctric

=poruiC di ,,' ' (41 idcnti·

fie>

PIX:aoo

Fl)<;o>

thel£drnique

w ~ i c h

allow the

d<are

discrimination

hctv.ern

the

etfcrt>

of

oil

mndition aoo

soli-d inw·

I ;on

moimITe

mntcnl

lhis

te>t J.ctcrmi

the pur< ohmic ,is·

lanco (Raj

from <adr

pha>< h o t ~ in

aoo

o w ~

<ides. ond.

if a .. ~ d i n g

1= at.p

change it

i,

hc<t

to

perform the

k<t

al

each

t. p l iOOn.

Rc<i<lanC< mea·

WITmcTlt

fCqui , a four tcrminal

or Kel_

vin

mnocction.

with

scpar>t<d

rurrent

insertion

and volt-.,'<

reading

to

a lid

i o c l u d i ~ g

the tt<t cahle

nooistanc<

in the

measurement

~

••

-.

_ nor ·

-

' .

•

mnlamin>rioo

a T I , h g i ~ g .

th e

RVM_

reco,d. R \ ~ l ... fill- 4. with

mrnmum

TC ('I1me C ~ ~ < U n t p r O O o m i n a ~ t time

mn<Wrt).

aoo al ,

includes

IR

IR,.

PI J n ~ i a l :ortrnlpt> ..ith R V ~ t to a ,

moimlre diTC<:t/)· from

tl><

plots

me t w i t ~

limitro

u t < U S ~ hut

mor< importantly, it

...... found

th ,

fo.- mor< degradcJ

in,ula·

tim

the

cn:.<t of

the tim<

c o o ~ ~ movro

tothe

left in

the

RVM

di'J'lay.

1 k c ~ n i q

(pIX:

and

R \ ~ l )

for

od=d

imubti<m

.. Or <

in

tl><

time

domain. A

f u n ~ c r m e t ~ o d FDS, wo,h

in the

fi-equency

domain

aoo

is

dcsct-ihcd

-

---=. . ---

.

ti ,

the

peal of

the

,'OIragcs

rrlote. to the

tim<

c o o ~ n l of

the

dkkctric

. ..ocm

(Rp.Cp.

tim<

c O l U l a ~ 1

in

Fig. 3).

lhis

gil'' ' information of disoolved moisture.

It was found that

for more degraded in

sulation the crest of

the

time

constant

mo

ved to the left

in

the

RVM display

Figur. 5. Plot

'1ISU1ts from

.. winding

_ro o tllSt

showing

..

problom in tho

high W> tago

wioding.

(oorninol position io 11 oo t 1).

Thio

was. probl,m ...

t

tap co.ngor

Winding resistance: dynamic (DC)

lhcre is

ako

in llrum<ntatim a ilahle

that

can

perform Dynamic

W i ~ d i n g Re_

<i<lanC<

(DWRj

mcasorernrnt<.

l ~ i s

GUT

he

used to chcd< the prnp<

operuion

of

the (m_Load

Tap

C ~ a ~ g e r

(OI.TC), here

the timing

of

the

¥ loon

and

chong«>.

T f

IT<i.<lOJlCe

or<

monitoITd

to iJmtify

I ,<ihkpmbkms

TTR. Transfonner

Turn Ratio (AC)

lhis

te>t

Im-oo,, , wying

..

I ,·

AC vol·

lage

to

<adr ~ i g ~ voltage winding plra ,.

mea<UTing

the

com:.<p<Jflding i ~ d u c c d

,-aloe =h n ~

winding,

and

de_

kmTining the

TTR fo.- <adr

tap changer

I ,ition.

lhi s ruio

,-aloe

droold h< very

do ,

to

nomcplatcvatoc.

and can iookatt

oketrical

or

tap chonger

p r o h k m ~



r'll ' 7.

Exompl.

rJ. floW _ . . . tor power trolslor. . . . . . .oluatioo rIP

lI-- l_.

. - I _

_ I

Instruments

for

measurement of win

ding

resistance

du

ring operation

of

the

on-load

tap

changer

are

available

Short circuit impedance

test

leakage reactance (Aq

Low

voltage =itatil lO

current (I.)

During

the

TfR t<>t.

the

mognctic cirrui

crriting

current

:01

m<=red. 1hi

eurrrn flo ,ing in the high ,lug< win_

ding

,ith the

1lWvnltag<.>d<oprn is

pm

portinn.aJ to

the

hctnry noh .d current

hut

might no mmplrtcly wrrd:ott. k

i

imporunt to ch<d ditfcrcnc brtwcen

plu. fi,r

the.<

<oITcntJI, :rnd dwlg<

in

trending of

thi,

will h<lp identify

problcms in

magnetic

cirruit

dcgraohti_

on.

Ioo<c

mr<

0. -

hot roc in mr<. 10 co

:01 he used to dct<d oned turns an

intcr_<tr.ind huh to

som<

dogn:<.

Be

coW<

the

eurrenl

could he

1,w. if there i

any doubt ahoul

the T<SUIu.

they ould

he e o o ~ r m O O ,-ith • ta n measurement

which can al ,

pcrfo.-m

th

is

t<>t.hut 0

higher

,cilation

voILig<

(I 0 \;V)

:rnd tho

gives

a hdtcr <OITcnt IT>OIution. Again

eurrrntJI

mould he

mea ,ed. mmpaITd

hdween pb ,- and

1mg

t<rm trendin

,<hoo.ld

he

ll.W

identify

dwlgc<

.1Il ._

,

.... 1Il

n _

.

.

.

.. ',

...

,w_u_ ,w

••

,w_ __

.IIl'

••, •

.......

.

.... .

,

..

...

••

r'll ' 6. ItooIJlts rJ. rum mio toot dm>rminir1l short

00:uit

tLms ot low \ OltogII

side,

S

phase

OIl

top

rJ rfJd

one. j Ollow phase _ted .

_

W.1.oo .

highio

r'll '

8. Results

from • /\old short c i m J ~

. . indicoting cho l in geometric

c i m ~

lhis tt<t

is .imil

to

the

fa.rtor)

<hort

cir_

cuit l< -

II

hascJ the rlu <e

hypb=

injection of an AC

CUITcnt

in cam high

,Itig< .ioX , ith a good (V<ry

low

mi>

lance .non drruil mnn«t<d on the

low

,It::igc

00<.

1he m<a.<uITd ,It::igc.

cur_

rent :rnd phas< aT< o<ed

to

calrul:ott

the

i ~ l p r t i u l r

ba« MVA

Thi. d ~ n « d short circuit ....

I t a ~

le.t Vo< ( j i• • fidd

tc<l th.l.imnla

t<s the factory I. , and

,ill

report .imil.

,..1 giving

an

indicooion uf g<ometri_

cal hilUTc m<..x.o winding

d i l a c c m c n

mechanical deformaiioTU, a<ymmrtry

etc

Her<,

it i, mu.oJ to r<mrd data 01

the

nomin:ol tap changer pooitiun. If a gro_

metric problem i, .<pcrt<d from

the

fidd

on

circuil ksl, fRA tcrt< and the

hi torica.l

,..nalion

ufeapacitanc«

wml

Lint from Lin

tc<l

CCluld:ol help in

the

diagnosi<

--LJ

•

IUtp

:r>'O ~ ..

1 · ..... _ ...1

.... .,..

,

ro;;o

- ,,..

,

ro;;o

_

,

ro;;o

I

....LU

I

I

~ - -

I

-,

I

-,

It

.

I

I

'

.

I

.

I

.

I

.

I

• •

,---.-,--

.--.-.--

,---.-.--

I

• •

I

• •

I

..

,

I

I

,-

I

,-

I

.-

I

uli

I

.-

..,

I

..

I

.,

.

I

'

I

.-

I

.M

I ...

,-,

~ m

•

J

-

.

1

.

(0)

1m

...--.

....,..

ooo.;uo J

-

...

I

__

. - ..... '-...1

~ I Oil...

,r-;--

1

1,. .. ,vJ

'- '- I _

l



If

a geometric pro

blem

is

suspected

form the field short

circuit

test, FRA tests

and the historical va

riation of capacitan

ces

resultant

from

tan

a

test

could also help

in the diagnosis

rogu , 1

O.

CoIIapsod

winding degradation dotoctablowi fRA

Tan b capa.citance

fo r

winding

bushings

(AC. 50

Hz 6 Hz)

RosistM

''''''I.

is

in pha>o

with

tho '«IItago

CapocitiYo on<

k is

rAj>h_ t . 90'

fotal

_

hdofi

6org1o.nd

..

tangent

H ,

we

0'1< an AC s.:h<ring hridg<

to

m<1<OJe

til< ang\<

by

whkl>

th<

me

..

,,,,d

,..

Iu<

f.lit. to

gi'''' th<

<>:p«t<d

90'

00 '

I mding a

pcrf<rt

coparifu..,

insulolion

1 bigger thi, angk.

th< gr<1tcr

th< In..

'.

and hrnce th< drgr:odotion. Simolt.·

nrooJy

to

th< tgA

( )

mea,urement.

th< e>p>dtano:<

bet.. n

\>;nding< or

\>inding>

to

groond

is

ID<1SIlrcd

bot this

time ..it h high

mlt>g<.

11>i,

_

i ,

usoally

perii)Tnled . .

2Wand lOW

1

I llI'Cf

lransf ,mcr

is

ellaTxttTi ,d

by

til< mmplcr R·I.-C cqoivalrnt

d r u ~

inside it. With

iTcqurnq

R 'I '-'

Ana·

i}-.i,

(FRAJ, we am >« for cIDl ph

.. ,

and ,,;ndingthe plot ofpok>

zrn

th ,

fCp

th<

,,,m.no:«

of

th<

indoctiw

and capacitiw

cIcrr.crru; th<

\>;nding

Change< in ea.ch phaiC

plot (al ,

called

,ign '''''-)

: I f<

th< n:pn:srntaric ,

I:

th<

altt ion, ( tly

g<<>mctrical) th<

diffcrcnt \>inding

ch acttri.&,

in..id<

it

(numhcr

of

l l m ~

; 'no:<. di<lanc<>,

<tel.

Chang«

will

he chcd<d

hctwcrn

phas<>,

;mil

.. .

tran<fonncrs

or m-cr

tim<

( rending).

1hcre a ,ilio <land. k 5 7 ~

and othcr ,dcrence, 161 th.t

am

help

to

gi' an

idea of

th< Jiffcrencn hetween

pattcrn,

each ph ,

in

. de

to '

if

there

a ,

an)' <llitortion, in

..

inding:s

and if , thei,

p ,.ihk OIigin

fahk 2

-Jc> ·of·th<·an on·line

kst-,

fi,,-

pmlictivc

maintrnanc< in

I

ttan<lOrtncr1I

fRA. Frequency Response Analy

sis lAC:

20

Hz to 2 MHz)

that

m a llimplibcd modcl

th<

tran,·

fimllcr in<ul ;on

to

grt an indk ;on

of

o ur in pape

andoil rondoctivit)'

wing

huJ,ing

e>p>dtiWOTtN >p. Ifth<.

IT i ,

Tl<I

teo tap or

a pmhkm

is

f C <d,

a

tan

instrument am ilio perfoom an

lem.l in,ul ,ion h , Iing £<ting called

hot.rolla,: \>-hkh «II11d check for

local

ddectJlli\ce erncks

in

th<

p<lTC<bin or

bd

of

oiL

fDS/DfR (AC:

1 mHz to

10

KHz)

DonWn

Sp<dm'l<opy (FDS)

or Dielectric ~ R P ) T l I < (DFR)

is th< lTadilionaJ

tan

6 te<l. bot thi, tim<

m< - lf<d at a

Tang< I:

fr<qu.mci<> and

o>wJly

..ith

a

low

AC ,Itag<. Utilitia,

OGRE

IHE a , 'ing han on

this

_ hocan ,

it

is

crpeet<d that with more

crpmroc<

of maintrnanc< prnbkms and

pb altttari<)ns W<

il l

\cam mor<

. . .

the

diclcctric ')'SI<JTL

In<hUITJ<nt manu·

f.octurcn

pl'<l'lidc

oompkmrnlaT)'

.oftwar<

Tan

6 ;11 dctcet

oiJ

drgtadation/mnta.

min 'ion. Capacitlnu

am

' ' ' ' ' identify

gmmctrical

change<

in 'oI'indinll'

and

mortcirruits

hrtwccn bYIT l

in hushing>

Mo' modem instrumrntation .llm.

tt.ting

no t

just

at 50 Hz 160Hz. bot in a

frcqococy

rang< (15H ,· 400

H,) tlul am

I m u

funll<, help

in

di

.. Tl<I<i

IT

----L..+

I

RV

Ie

rogu ,

g

rMgrnn rAcur ,r.. lIcwing throogk

dieloctric

f.blo

, . On-lin.

tosts

f[)f

po-.-

.r>sfom>ef f oId

tosting

TRANSFORM£R/OIElECTRIC/BUSMINGSIOlTC

Po iol di haf9 '

(UHFNI o ,nic)

With th<

Jiffe 'nt instrument

tt .t

mnOCs

~ \ T / U S T

((;rnundcdiUngmondcd Spe

cimen Tost). diffcrrnt a ,

the

tr . lrn.

former insulolion

am he

te<ttd: HV

;n ·

dingto cor<

and tank

CIiG,

tV

\>;ndingto

WITand tank

C , HVto

LV CliG,or

<V<I'l

h ,l>ing:s- In hwhing< til<

inlem.l

insula·

tion

i,

t«t<d

with til<

mco.'UITTllCTlt

in

capa.eilan«> CIICl. 1his can

he t«t<d

indcprndmtly

f ,m

'oI'inding iTlSllhtion

fan b

Phy,k-ch,micol oil t<>t

furan

t , ing

Th,rmography (IR)

oue monitoring

In.ulming

011

DGA

lDi olv<d Ga.

onoly.i,l,ith

..

manual

or

continuou<



Equipment with improved features and

resolution

enables

a

detection

of

most

failure

modes that generate

a thermal

fingerprint

(bushing, coolers, pumps, fans, OLTC, etc.)

Som<llmeo

Ft>rJ-b

conlrnt is ,

II

led frrwn tho lalt< * T btcal

. . w

pron.

da .. . h ald<gndoIion

. . . .

of

R (fur>M ponmI irI no

only

..abr· JR ckJl

,.,..[

-.II wiIh R o.pr all lllf-

i · ( D P l I l 7 1 ~

O n - ~ n e p r e d i c : t i ~

tests

fo r

tlllnsfonnl f/di

elKtric

l,>doy thcIT

,,, proc<tln= tho

<an

I><

.h.. .

in

1 - tnnoI< .

....... and

gin valuolW

~

........

0 1 '

. . . . . '.

I'oJtial DiKbup (PD). 1h<

.....u,.

F 'I'

(9. lot i<I<rolftd

- . IDb tho

_ oaarJuI iol

icId- .

. . . . . . . . and

_ _ _ _ _

th< . . . . . . . IUUHfand

Uluuoaic.

Both imtaII

- . . . . .

worlioItl in fm:potnq op<ctrwo arao

,,;,t,

~

............ (11)

..

oJlmn

th< In<l

ru ,

to

r<j«' y 1'l).h1«

i 1l£ffer<nc<

fnom I <llsidc<k-mcl1\l1).

,.... .A ....... .i,Ollochtd

tondJ_t>p

' tho

huohinp

oncl ....

,etbron pd<tOli.

oI ....

........ No:

t# I ddto. io .........

.....0

b

ndJ

huohonf

1h<

' io

pi.:k

&iIo-

No:

...,.

......

in a r..

........

~ N o : < : < d d d < m u , - . . . , '

............................

~

.. t ~ r n p r o l l

h

.. .Cl/C2 ......

OLTC rnooittln ll:

...,.,sdc.

qu<.

etc,

~ p b y lhanh

to

th< nailabi·

hty

.......

. w oth fnIureo

and

..

an

doo<ct

f.;loft

.....

1M

. . . . . . . . . ad>onnol

'I w.

~ m a I < n . ~

. . . .

O U C < 1 l < . ~

On-ine

predictlw

tKts

for

tnnsfonnl f oil

Tnday_hav< cnmmm 'l,,,,-ailab·

Ie fur oill<oli ll rnca>Uf<m<nl< in tho fidd:

Manoal oi l .ampU,,&- Oil i . oam-plnl

(working with

iCricI

.uandard pro«<hun

Ill.

UU

i>Ibored

by

IaItor*--y

onaly.

_

II;,.....,

h......

. '....... tt.. oil

II:u. . . '* ' ..t..n

II

io . . . . .

.............. ~ ~ . i n o i l

, . . ; , \ 101IO< ~ _ . . . . JJmoLIo,r

. . . . . , . ._ .....abiblyofoil '-..do·

oandan d<drlc

lield

.... iup>d indioI-

l<l<of oil

f Oht1.

MDistvrr in oilro

IndicaMn .,(

,,'atC1

1'1

i

oil

itxlf.Whll

mni.tore

in il i, bri ll mca>Ured, ><

....

wh

is wcJ ' , Indirt<tI)· Jct<r ,l III<

mni5lur< in the p>r<

inml.oon .)

. .

a

particular

l<n

1 h i o « f j o ~

is

- - . , o d .

FOSan

. . . .

'.......'

.....

lhio • .mo II .. raIy irnportarC'

boc..-Ihio

poo

.-. io

. m y a l P- ...

~ D G A ~ G u ·

Ipio)

is a l<oil nr po u ..d br .....

di,,

gmpl<>

, .

b/onral<r

ID

aitoIyor

ndJ

gn

imid<

th< oil

in 1'1 - 1EF.F.lIr If.Chav<

<W><brds 113,141

C2It guide In

tho

dcci,;.,.,

mal:1 ll p ><nt tt l diagn<... lP

in oil both

I<or

It..u and

trn-d 111= ....

o=ral

diap>ooU

in

tl>oot

d>rtIo hU

' ' ' ' '

R-...

Jlnp:r _ ~

......

lAPAI'

EnA

(Ei<dri< ~

.. '·M· ),<11<.010< _

........... . . . . . __ lha< _

.....

d6rmt

DImIl Trlaops

I I:M.

.

J'I ' P 6 of adI

t)'pL N.

th<mdof211I4, Dun

'

pm-

mioaIa ...... inoig/t'

todaomr

...

pmbI<m>and thdrpmgn=R=b .;l11><

ahI<

tt l

indiato

the

pre«T>C< ofl'l).

,hcnnaI

... dcctric pn-lI>lcnu

nnoh

way .nd

.1

If

th<

pap<T is lIm-.lvod in

th<

pmNcm,

C06lin

....... 0;1 DG .... Thday.

~

OR

.y>tcrn. , ..ilaN<

,,1« wnpla

from

n In •

wntim,,,,,,, mnde, Ins ·

lU 'Cn ,.n f tuITf'I n.n.lly pm.,.;de

,..

.., 1<>,,1. f c pluity

,heir

gas

analper>: m<

, -.1 of inot , '... m<>

nilon I. 2 3 ~ (H

........

>m.

ba>i<:

~ Ilk<

thooe for

Duval trian$kl and

.....u... J oyooenu

duI

,itor _

k qpo

anaty.d

ib DGA

(7.,

P- ) .

n.....

....1

wiIh and

pu

, , •

mer to

. .

oon:alI

'

biI'.

rondition. IX;A is a -tI-atal>looh.«

1<001

di l ......

fa;1uu

made. In po .......

lran,fnnnel'll,

IlotJ,

ga.. and gao

rat; a inJkari n, f dlff....n f.il,,·

f .

,,,.1<.0

In P S and p lnl,n toor

p 'lbl< .. .Igio•. :u

wcll

. . 1f paper is in ·

vol'vuI In ,he

prol>lem.

Diagnosis

&

trending

bdo

....

J o -

......

a>d

_ , .p.

S<lrn<

anbtdirt<VTu.,,,,,,,rdto

or 11o:tory......Jb.

11oeoo

num·

Iocr. ...

di.........

m.... l dilfeTtn'....v

rianaluancot.

'Ylt

' '*

~ g c t h c r and

with lr<nd with.

m:nrnrncndali·

ro t furthotran,{ nncr

- . . . .

,... .nant lik

.. .poooiblrrepai, ..

m



ometimes trending c n be

more

impor-

t nt th n

n

individu l di gnosis b sed only

on immedi te results bec use trending re-

ve ls the speed of degr d tion

in

~ M

Sa)oo

Fr.d<sa Imtrhriin

FJmrica.

Spain.

(]GRE201O

A2jO'UOIO.

14] Tromicalllro.:lar<

4 14-20

1

0.

~ R<

'I ' Di>gno«s b Tnmhmcr

\';nding<

W(;0101(TF14)

15] DLJT 911·2004. fu<pJrncj' v=

A

. .

•

~ - m m l'r..Jing D<formatim

<lfl\no.<rT,.. ,·

~ ~ r t f ~ : l r w l u < t J r S t a n d a r J

161

TMnicalllm.:hur< 341·J008.

CK;RI

M<

dlanical.( <JndD:Jn Ass=mrnt rtfT

mJonncr

l'r..Jings using F J <'>')'

R<sJ>ons< Ana/pi<

(FRA.

WGAUti)

17] lEn <:571-19·20ll

TEI-:r

Guidr of tOC

AWiation

mel

IIIlt,I ,....

. ,

rtf

fu<pJrncj'

Rapons<

A.w,-m

for

( ~ I · l m m m « Transb·

I ~ ] I E C 6007/i..llU()ll

FI:lo m tnn<hmrn_

I art 18

rtf Fn:qo<nc .-

V -

TC 14.

19]

TFH.SId

C57.I27·2007.

IEFH<Iid<m..tOC

Iktoctim md

l.ocatioo <If

AalO<b:: Frnis<iorn

frrrn

r.rtial

~ n

Oil·lmmm«

FI:lo m-

T ~ m e I R a r n n

110]

T<dInical Ilrochur< 343·J008.

(X;RF.

Ikmmrnmda io:m

lor

CondKion MonikJring

md

C ndilic., A<>=mrnt Facilili«hT,.. , ·

Ionnrn. WG

A2B.

111]1H:6OI751011

M < t ~ o d r t f ~

......

Iating li<pJioh. mo.

112]IFCIlli6720ll O ; I . 1 i I O O d < c t r i c a l ~ .

mrnt _

San¥ing rtf l ' md

<If

ITt<

mdd;.dvOOgosn_Guidane<.TOO

113] TrEE

(57.1M-J008.

IHI

(.,i<lr of

tOC

....

I ,

....

. , <If

( ( - nmIlu:l in Oil·lm·

, . n ~

114] TEe (,()5C}9,1'I'l9.HtD L2007CSV Minr

raJ ' 1 . i m ~ d < c t r i c a I f pmrnt in .

vic< _ (rtJid< to tOC

inttll ttatio

rtf

d;.dvOO

md

fror l '

. . .

lj>is.TOO

liS]

T.Il

BmdmIT

29l\.2OOti.

Ilro:rO

;:x., 1

_ in DCA Inltrpf<Wion. 01011..1211

116] Tm Bmdm ,4H·2OIo. OGA in \on·Mi·

ntraI Oils mel I ,

Tap

(:hanger>

and Impm'

. r o 1 ) ; A ~ C r o c r i a . W(;Ol3l

117] Task

lI ,d...

, 4'14·2lJll Furanic

(:00,.

ptJIl'l'l> of Diogr>osis

WG

01.01

TTIJ.

uthor

A dR Tob.rnerG Garria btain£<

hi ,

okgr« in

tehmn·

mn ic.tion

,ngin<cring

fmm Un; ·<nid.d

I'olito'cnica

d<

Madrid

Spain. H < ~ . .

I><m

working

at

L:nitr<mia

f.k<:lJie,

Sp.in _,inc< 1989,

hcrt

I l < ~

... ocwl l ,d

olf_lino , te= ETI'

fin te,ting power l T a n , f u T T O C r ~ and EDAIII fur t<sti g ,tatOT

,

imw.tion of rotating

machiTl<Jl.

Today

ht

fi)(lJS<Jl comwt·

ing

.nd

U itroni

trainingpmgrammo

in

powertra ,f,mncrs

.nd

mlating machine<

And«,

h

.. .

aI ,

,p<tialiud

in ,m·lin< partial

dioch.rg«

in

Rotating MacMn<

•.

Ho i , .

OGRE

m<ml><r

&

IEEE «nior m<mhcr.

I lWtT

lTamformcr

and thi ilK« R

liability of

oor

.._ I r t f o l ~

11><

«.wls

mm

1JS

mo« romprtrnt rrdo« in ,·

n.ne< 00 and will

,,,fi,

the aim of

tramfurm •• til'< .:rton.ion.

Today thcr<

aT< ....ilohk trn ry>trn>s

til>

,;mplify m < a > L l r < m < n l ~

wloco

_

<ml I1 l

.nd t<Jlting tim<, and mm data co.,;

to

,,,rk 'ith. As ,m< diagnosis prni«

is

Io<t do< <taIf

Trti«m<nt

.nd «ocwal

the

I p ; to

ha

wdl.trair.<d.wf,

.0 that all pmee< '

fu

m< 'ill<m<n1

t h r o o g ~ di.gnosis

m;:,,,,,m<nd.tio,,,

'IT rdial:>k

cknowledgments

I ,i.' t tl th. \; til< OOitori.1 ho.Td for thrir

~ n . , tt l my Iii<nJ K<Vin

H.Tldfi,.-d

fOT hi ,hdp

'ith English adaptation of

the paper,

and tt l

my family for gi ;ng I l l<

the ,lTa tim<n«<kd

t t l , Til<

tM. papcr.

REFEREN ES

II]

TFH.

~

<:57152-2013 (1«,ision f

IIEE

til I995

IHE (;uidrfu<

Diogoootic

Hdd Ta·

<lfFbol·filhi rm.<rTr. ,bn><n.lkgu.

Ial Jnmel Roocton.

11]

T,dmicalllrudu<445·201 L

U:;RJ-: (Oli·

<\<

b TransIonncr laintmanc<

1'1'(;

ALl4

11]

N

rtf

mail f<lUnC<

rtf

P '

tnrnfunnrn

md

main

<Jlf.1in<

1<>1 .. . m·li . monitoring S) - H. ( so &

[ I'alazudo< IhmIn:>a

FJ<ctrica

s . ~ u )1

Angw> & S. ()oirtin.

R<d

fJ<ctrica

de

F ~

A.

\'iLrruIU.

Ihrnlmla

( - raci.

Training

onclusion

When • tra ,filllTlCT

is

going tt l I>< l<>t£d.

it i , important

tIut propk

who

perlilfll1

the

«<ling (either til< company

.w f

or

outside c o ~ aT<

dnly trained and

.kilkJ

in

_ i n s

Tt

is

important

t tl

ha

oonfidene< in the lc>t

r=l

in

...-dIT to

mm a good

tran.fum>cr

di.gn ,, ,

and

not mTiiook

failo , rn<><h in pmgr<><

Whi],t «lID< 2·3

aT<

l T I j o i I T d ~ R

eel,..,

<Tl(){lgh training t t l pcrfum> >ati.fac..

~ ) r i l y h o t ~ ting and

f'ITlimin.ry diag_

is , it tak Iong<r

t tl

I><<<>m< «pert

.nd _<p«ial

pmbkms

may oc<d

the 1 -

tis< of

lernal <Cl1Wlh. l

rr<dicti rminttnaoc< pmgramme>

in ·

Another

key point

in diogno,,;' i .

the

R

,icw

of

historylrr, ding

of tra ,fi)rmcr

k< t It< Sometime> trrnding

can

I><

mOT<

important than

.

individual

dia·

gn ';'

ba.cJ ,..,Iy ' '

immediate

It<

Trending n-vcol. til<

J ffd

ofdegradation

k i , .1 ,

ncre«ary to

p<rfuom a eli ,

1m, elther fi. .

nnkn ,,,,, tra 'furrncro

or

. t

commi«ionirtg. fur

tw o

r , , ~

fir,t1y,

I><

<crtai tl><

lTa ,foTTOCr

;. in good

condition and

fulli;'

mnmctw.l

rrqniR

m < n t ~ .nd ,..,dly, 1..,,<dataa il.hIe

r < f e r ~ i

futllr<

lc>ts and

..

mcnl<

l:>iagno<tic

mrrn.. GIll

d<pending

00 the

tnr<Ji:Jnncr,

_g comparne. <

.

rnd but they N.

a, a minimum

oct

rtfrrfrn.-r.cr :or< ,,, iT£< [11

.nd od>cr. (2, 3] com< from

an

empirical

I'l '..rn. Toda)\ 1m , av.lilablc

Expert

I:>iagnoo< So&. ,

tIut can

pcrhm

0 f.Wu.

intcrprctalioo -cd

00

the a h < , , ~ mrrn..

100< 'i<llb.= g ; . . ~

indica·

tion rtfthe madlill< >tala<, butitmmt Ix the

nuint£nanc< 'P who. ,1Ih

all

the

rna·

<hill<

<hla. pcrfurm<

the ~ n a J

diagnn<i< and

nul<£<

rcromrnrr.daliorn

in Tdrnnc<

t t l

'I 'iT,

coolinuanc<

prowam.

ming ne _ <Vrn >crvic< limitalio:>rn,ctL.

Whats Behind Transformer Field Testing (COPYRIGHTED)

Documents

Transcript of Whats Behind Transformer Field Testing (COPYRIGHTED)