Iec 60700 1 2015

If th worst c mbin tio of... Th minimum re uireme ts for ro tin te ts are lste in 14.5.

Thyrist or valves for high volt age dire t cur ent (HVDC) power t ransmis ion –

Part 1: Elect rical t est ing

Valves à t hyrist ors pour le t ra sport d'é ergie en courant cont inu à haut e

-Co yr ig t © 2 15 IEC, Geneva, Switz r lan

Al rig ts r eser ve Unles oth rwise sp cifie , n p rt of this p blc tio ma b r epr od c d or uti ze in a y form

or b a y me ns, ele tr onic or me h nic l in lu in p oto o yin a d microfim, with ut p rmis io in wr itin from

eith r IEC or IEC's memb r Natio al Commite in th c u tr y of th re u ste If y u h v a y q estio s a o t IEC

c p r i ht or h v a e q ir y a o t o tainin a ditio al ri hts to thisp blc tio , ple se c nta t th a dr es b low or

y ur lo al IEC memb r Natio al Commite for ur th r informatio

Dr oits d r eprod ctio réser vés Sa f in ic tio c ntraire, a c n p rtie d c te p blc tio n p ut êtr e repro uite

ni uti sé so s q elq e forme q e c soit et p r a c n pro é é, éle troniq e o mé a iq e, y c mp sla p oto o ie

et les micr ofilms, sa s la c rd é rit d l EC o d Comité n tio al d l EC d p ys d d ma d u Si v us a ez d s

q estio s sur le c p r i ht d l EC o si v us d sirez o te ir d s droits su pléme tair es sur c te p blc tio , uti sez

les c ord n é s ci-a r ès o c nta tez le Comité n tio al d l EC d v tr e p ys d résid n e

Ab ut t he IEC

Th Intern tio al Ele trote h ic l Commis io (IEC) is th le din glo al org nizatio th t pr ep res a d p blsh s

Internatio al Sta d r ds for al ele tri al ele tr onic a d relate te h olo ies

About IEC publc tion

Th te h ic l c nte t of IEC p blc tio s is k pt u d r c nsta t r eview b th IEC Ple se ma e sure th t y u h v th

latest e itio ,a c rrig n a or a ame dme t mig t h v b e p blsh d

IEC Cat alog e - webst ore.e ch/ cat alog e

Th st an -alo e a plc t io for c nsultin th e tire

biblo ra hic l informat io o IEC Intern tio al Sta d rds,

Te h ic l Sp cific tio s, Te h ic l R ep rts a d oth r

d c me ts A v aia le for PC, Ma OS, A ndroid Ta let s a d

iPa

IEC publc t ion s arc - www ie c / se rc pub

Th a v an e se rc e a les to fin IEC p blc t io s b a

variety of crit eria (refere c n mb r, t ext, t ec nic l

c m itt e,…) It also gives informatio o projec t s, re la e

a d wit hdrawn p blc tio s

St ay u to d te o al n w IEC p blc t io s Just Pu lsh d

d t ais al n w p blc t io s rele se A v aia le o ln a d

also o c a mo t h b emai

Th world's le din o ln dic t io ary of elec t ro ic a d

ele t ric l t erms c nt ainin more th n 3 0 0 terms a d

d finitio s in En lsh a d Fre c , wit h e uiv ale t t erms in 15

a ditio al la g a es Also k nown as t he Int ern t io al

Elec t rot ec nic l Vo a ulary (IEV ) o ln

IEC Glos ar y - st d.e c / glos ary

More t ha 6 0 0 ele t rot ec nic l termin lo y e t ries in

En lsh a d Fre c e tra t ed fom t he Terms a d Definitio s

cla se of IEC p blc t io s is u d sin e 2 0 Some e t ries

h v e b e c le t ed fom e rler p blc tio s of IEC TC 3 ,

7 , 8 a d CIS R

IEC Cu t omer Servic Ce t re - webst ore.ec c / cs

If y ou wish to giv e us your fe d a k o t his p blc tio or

n e furt her as ist an e, ple se c nt act h Cust omer Serv ic

Ce t re:csc@ie c

A pro os d l EC

L Commis io Ele trote h iq e Inter natio ale (IEC) est la premièr e orga isatio mo diale q i éla or e et p ble d s

Normes internatio ales p ur to t c q i a trait à léle tri ité, à léle tr oniq e et a x te h olo ies a p re té s

A pro os d s publc t ion IEC

L c nte u te h iq e d s p blc tio s IEC est c nstamme t rev Ve i ez v us as ur er q e v us p s é ez lé itio la

plus r éc nte, u c r rig n um o ame d me t p ut a oir été p blé

Cat alog e IEC - webst ore.e ch/ cat alog e

Applc t io a t on me p ur c nsult er t ous les re seig eme t s

biblo ra hiq es sur les Normes intern t io ales,

Sp cific t io s t ec niq es, R ap ort s te h iq es et a tres

d c me ts d l EC Disp nible p ur PC, Ma OS, t ablett es

A ndroid et iPa

Rec erc e d publc t ion IEC - w ww ie c / se rc pub

L re h rc e avan é p rmet d t ro ver d s p blc tio s IEC

e uti sa t difére t s crit ères (n méro d référe c , t exte,

c mit é d’ét ud s,…) Ele d n e a s i d s informatio s sur les

projets et les p blc t io s remplac ées o retiré s

R estez informé sur les n uveles p blc t io s IEC Just

Pu lsh d d taie les n uv eles p blc t io s p ru s

Disp nible e lg e et a s i u e fois p r mois p r emai

L premier dic t io n ire e lg e d t ermes éle tro iq es et

éle triq es.I c ntie t plus d 3 0 0 termes et d finit io s e

a glais et e fa ç is, ainsi q e les termes é uiv ale t s d ns

15 la g es a ditio n les Eg leme t a p lé Vo a ulaire

Elec trote h iq e Int ern tio al (IEV) e lg e

Plus d 6 0 0 e t ré s t ermin lo iq es élec t rot ec niq es, e

a glais et e fa ç is, e traites d s art icles Termes et

Définit io s d s p blc tio s IEC p ru s d p is 2 0 Plus

c rt ain s e tré s a t érie res e traites d s p blc t io s d s

CE 3 , 7 , 8 et CIS R d l EC

Serv ic Cle t s - w ebst ore.e c h/ cs

Si vous d sirez n us d n er d s c m e taires sur c tt e

p blc t io o si v ous av ez d s q es o s c nt ac t ez-n us:

Thy rist or valves for high volt age direct c r e t (HV DC) power t ra smission –

Part 1: Ele t rical t es ng

Valves à t hyrist ors pour le t ransport d'énergie e courant cont inu à haut e

INT ER NAT IONALE

W arnin ! Mak e sure that you o tained this p blcatio from an auth riz d dist rib t or

At tentio ! V eui e v us a surer q e v us ave o ten cet te p blcat i n via u distrib teur agré

2

Normativ ref ere c s 7

3 Terms a d d f i itio s 7

3.1 In ulatio c -ordin tio terms 8

3.2 Valv c n tru tio terms 9

3.3 Terms relate to ty e te ts 10 3.4 Terms relate to pro u tio te ts 10 4 Ge eral re uireme ts 10 4.1 Guid ln s f or th p rf orma c of ty e te ts 10 4.1.1 Evid n e in l e 10 4.1.2 Te t o je t 10 4.1.3 Se u n e of te ts 10 4.1.4 Te t pro e ure 1

4.1.5 Ambie t temp rature f or te tin 1

4.1.6 Fre u n y f or te tin 1

4.1.7 Te t re orts 1

4.2 Atmo p eric c r e tio 1

4.3 Tre tme t of re u d n y 1

4.3.1 Diele tric te ts 1

4.3.2 Op ratio al te ts 1

4.4 Criteria for s c e sful ty e te tin 12 4.4.1 Ge eral 12 4.4.2 Criteria a plc ble to th ristor le els 12 4.4.3 Criteria a plc ble to th v lv a a wh le 13 5 List of ty e te ts 13 6 Diele tric te ts o v lv s p ort 14 6.1 Purp s of te ts 14 6.2 Te t o je t 14 6.3 Te t re uireme ts 15 6.3.1 Ge eral 15 6.3.2 Valv s p ort d.c v lta e te t 15 6.3 3 Valv s p ort a.c v lta e te t 15 6.3.4 Valv s p ort switc in imp ls te t 16 6.3.5 Valv s p ort lg tnin imp ls te t 16 7 Diele tric te ts f or multiple v lv u its (MVU) 16 7.1 Purp s of te ts 16 7.2 Te t o je t 16 7.3 Te t re uireme ts 17 7.3.1 MVU d.c v lta e te t to e rth 17 7.3.2 MVU a.c v lta e te t 18 7.3.3 MVU switc in imp ls te t 18 7.3.4 MVU lg tnin imp ls te t 19 8 Diele tric te ts b twe n v lv termin ls 2

8.1 Purp s of te ts 2

8.2 Te t o je t 2

8.3.5 Valv l g tnin imp ls te t 2

8.3.6 Valv ste p fro t imp ls te t 2

8.4 Valv n n-p rio ic f irin te t 2

8.4.1 Purp s of te t 2

8.4.2 Te t o je t 2

8.4.3 Te t re uireme ts 2

9 Perio ic f irin a d e tin tio te ts 2

9.1 Purp s of te ts 2

9.2 Te t o je t 2

9.3 Te t re uireme ts 2

9.3.1 Ge eral 2

9.3.2 Ma imum c ntin o s o eratin d ty te ts 2

9.3.3 Ma imum temp rary o eratin d ty te t (α = 9 °) 2

9.3.4 Minimum a.c v lta e te ts 2

9.3.5 Temp rary u d rv lta e te t 3

9.3.6 Intermite t dire t c r e t te ts 31

10 Te ts with tra sie t forward v lta e d rin th re o ery p rio 31

10.1 Purp s of te ts 31

10.2 Te t o je t 31

10.3 Te t re uireme ts 31

1 Valv f ault c r e t te ts 3

1 1 Purp s of te ts 3

1 2 Te t o je t 3

1 3 Te t re uireme ts 3

1 3.1 Ge eral 3

1 3.2 On -lo p fa lt c r e t te t with re-a ple f orward v lta e 3

1 3.3 Multiple-lo p fa lt c re t te t with ut re-a pl e f orward v lta e 3

12 Te ts for v lv in e sitivity to ele troma n tic disturb n e 3

12.1 Purp s of te ts 3

12.2 Te t o je t 3

12.3 Te t re uireme ts 3

12.3.1 Ge eral 3

12.3.2 Ap ro c o e 3

12.3.3 Ap ro c two 3

12.3.4 Ac e ta c criteria 3

13 Te tin of s e ial f eature a d f ault tolera c 3

13.1 Purp s of te ts 3

13.1.1 Ge eral 3

13.1.2 Circ its to fa i tate th pro er c ntrol, prote tio a d mo itorin of th v lv 3

13.1.3 Fe ture in lu e in th v lv to pro id fa lt tolera c 3

13.2 Te t o je t 3

13.3 Te t re uireme ts 3

14 Pro u tio te ts 3

14.5.1 Vis al in p ctio 3

14.5.2 Co n ctio c e k 3

14.5.3 Volta e-gra in circ it c e k 3

14.5.4 Volta e with ta d c e k 3

14.5.5 Partial dis h rg te ts 3

14.5.6 Ch c of a xi arie 3

14.5.7 Firin c e k 3

14.5.8 Pre s re te t 3

15 Meth d f or lo s d termin tio 3

16 Pre e tatio of ty e te t re ults 3

An e A (n rmativ ) Te t s fety f actors 4

A.1 Ge eral 4

A.2 Te t s f ety fa tors f or diele tric te ts 4

A.2.1 Imp ls te ts 4

A.2.2 AC a d d.c temp rary a d lo g- erm v lta e te ts 4

A.3 Te t s f ety fa tors f or o eratio al te ts 4

An e B (n rmativ ) Partial dis h rg me s reme ts 4

B.1 Me s reme t of p rtial dis h rg 4

B.2 Partial dis h rg d rin a.c te ts 4

B.3 Partial dis h rg d rin d.c te ts 4

B.4 Comp site a.c plu d.c v lta e stre s 4

Fig re 1 – Ste p f ro t imp ls te t v lta e 8

Ta le 1 – Th ristor le el f aults p rmite d rin ty e te ts 13

Ta le 2 – List of ty e te ts 14

Part 1: Electrical testing

FOREWORD

1) Th Intern tio al Ele trote h ic l Commis io (IEC) is a worldwid org nizatio f or sta d rdizatio c mprisin

al n tio al ele trote h ic l c mmite s (IEC Natio al Commite s) Th o je t of IEC is to promote

intern tio al c -o eratio o al q estio s c n ernin sta d rdizatio in th ele tric l a d ele tro ic fields To

this e d a d in a ditio to oth r a tivities, IEC p blsh s Intern tio al Sta d rds, Te h ic l Sp cific tio s,

Te h ic l Re orts, Pu lcly Av ia le Sp cif i atio s (PAS) a d Guid s (h re f ter refere to as “IEC

Pu lc tio (s) Th ir pre aratio is e truste to te h ic l c mmite s; a y IEC Natio al Commite intereste

in th su je t d alt with ma p rticip te in this pre aratory work Intern tio al g v rnme tal a d n

n-g v rnme tal org nizatio s laisin with th IEC also p rticip te in this pre aratio IEC c la orates closely

with th Intern tio al Org nizatio f or Sta d rdizatio (ISO) in a c rd n e with c n itio s d termin d b

a re me t b twe n th two org nizatio s

2) Th formal d cisio s or a re me ts of IEC o te h ic l maters e pres , as n arly as p s ible, a intern tio al

c nse sus of o inio o th rele a t su je ts sin e e c te h ic l c mmite h s re rese tatio f rom al

intereste IEC Natio al Commite s

3) IEC Pu lc tio s h v th f orm of re omme d tio s f or intern tio al use a d are a c pte b IEC Natio al

Commite s in th t se se Whie al re so a le ef f orts are ma e to e sure th t th te h ic l c nte t of IEC

Pu lc tio s is a c rate, IEC c n ot b h ld resp nsible f or th wa in whic th y are use or for a y

misinterpretatio b a y e d user

4) In ord r to promote intern tio al u iformity, IEC Natio al Commite s u d rta e to a ply IEC Pu lc tio s

tra sp re tly to th ma imum e te t p s ible in th ir n tio al a d re io al p blc tio s An div rg n e

b twe n a y IEC Pu lc tio a d th c resp n in n tio al or re io al p blc tio sh l b cle rly in ic te in

th later

5) IEC itself d es n t pro id a y atestatio of c nf ormity In e e d nt c rtific tio b dies pro id c nformity

as es me t servic s a d, in some are s, a c s to IEC marks of c nformity IEC is n t resp nsible for a y

servic s c rie o t b in e e d nt c rtif i atio b dies

6) Al users sh uld e sure th t th y h v th latest e itio of this p blc tio

7) No la i ty sh l ata h to IEC or its dire tors, emplo e s, serv nts or a e ts in lu in in ivid al e p rts a d

memb rs of its te h ic l c mmite s a d IEC Natio al Commite s for a y p rso al injury, pro erty d ma e or

oth r d ma e of a y n ture wh tso v r, wh th r dire t or in ire t, or f or c sts (in lu in le al f ees) a d

e p nses arisin o t of th p blc tio , use o or rela c u o , this IEC Pu lc tio or a y oth r IEC

Pu lc tio s

8) Ate tio is drawn to th Normativ ref ere c s cite in this p blc tio Use of th ref ere c d p blc tio s is

in isp nsa le f or th c re t a plc tio of this p blc tio

9) Ate tio is drawn to th p s ibi ty th t some of th eleme ts of this IEC Pu lc tio ma b th su je t of

p te t rig ts.IEC sh l n t b h ld resp nsible f or id ntifyin a y or al su h p te t rig ts

ele tro ic for ele tric l tra smis io a d distrib tio s stems, of IEC te h ic l c mmite 2 :

Power ele tro ic s stems a d e uipme t

This s c n e itio c n els a d re la e th f irst e itio p bls e in 19 8, its Ame dme t

1:2 0 a d its Ame dme t 2: 2 0 This e itio c n titute a te h ic l re isio

This e itio in lu e th fol owin sig ific nt te h ic l c a g s with re p ct to th pre io s

e itio

a) Definitio s of terms “re u d nt th ristor le els”, “h ristor le el”, “v lv s ctio ” h v b e

c a g d for clarif i atio

b) Th n te were a d d to te t re uireme ts of diele tric d.c v lta e te ts for v lv s p ort,

MVU, v lv , s e if yin th t b f ore re e tin th te t with o p site p larity, th te te

o je t ma b s ort circ ite a d e rth d for s v ral h urs Th s me pro e ure ma b

f olowe at th e d of th d.c v lta e te t

c) Ta le 1 o th ristor le el f aults p rmite d rin ty e te ts wa s p leme te

d) Th altern tiv MVU diele tric te t meth d wa a d d

e) It wa s e ifie th t pro u tio te ts ma in lu e ro tin te ts a wel a s mple te ts

f ) It wa a d d into te t re uireme ts for p rio ic firin a d e tin tio te ts th t a s aln

f actor f or te ts s al b a ple wh n te tin with v lv s ctio s

Th te t of this sta d rd is b s d o th f ol owin d c me ts:

Ful inf ormatio o th v tin for th a pro al of this sta d rd c n b fo n in th re ort o

v tin in ic te in th a o e ta le

This p bl c tio h s b e draf te in a c rd n e with th ISO/IEC Dire tiv s, Part 2

A lst of al p rts in th IEC 6 7 0 s rie , p bls e u d r th g n ral title Th ristor valv s for

hig v ltag direct cure t (H VDC) p wer transmis io , c n b f ou d o th IEC we site

Th c mmite h s d cid d th t th c nte ts of this p bl c tio wi remain u c a g d u ti th

sta i ty d te in ic te o th IEC we site u d r "htp:/we store.ie c " in th d ta relate to

th s e if i p blc tio At this d te, th p blc tio wi b

• re o f irme ,

• re la e b a re is d e itio , or

Part 1: Electrical testing

This p rt of IEC 6 7 0 a ple to th ristor v lv s with metal o id s rg are ters dire tly

c n e te b twe n th v lv termin ls, f or u e in a ln c mmutate c n erter for hig v lta e

d.c p wer tra smis io or a p rt of a b c - o-b c ln It is re tricte to ele tric l ty e a d

Th te ts s e ifie in this sta d rd are b s d o air in ulate v lv s For oth r ty e of v lv s,

th te t re uireme ts a d a c pta c criteria c n b a re d

2 Normative ref erenc s

Th folowin d c me ts, in wh le or in p rt, are n rmativ ly ref ere c d in this d c me t a d

are in is e s ble for its a plc tio For d te refere c s, o ly th e itio cite a ple For

u d te refere c s, th late t e itio of th ref ere c d d c me t (in lu in a y ame dme ts)

a ple

IEC 6 0 0, H ig -v ltag test ech iq es

IEC 6 0 0-1, H ig -v ltag test tech iq es – Part 1: Ge eral definitio s and test re uireme ts

IEC 6 0 1-1, I nsulatio co-ordinatio – P art 1: Definiti ns, principles and rules

IEC 6 0 9 (al p rts), Surg aresters

IEC 6 2 0, H ig -v ltag test tech iq es – Partial dis harg mea ureme ts

IEC 618 3:19 9, Determinati n of p wer los es in hig -v ltag direct cure t (H VDC)

co v rter statio s

IEC 618 3:19 9/AMD 1:2 10

1

ISO/IEC Guid 2 , Ge eral re uireme ts for th tech ic l comp te ce oftesti g lab ratories

2

For th p rp s of this d c me t, th folowin terms a d d finitio s a ply

3.1 Insulatio c -ordinatio terms

3.1.1

te t withstand v ltage

v lu of a te t v lta e of sta d rd wa e h p at whic a n w v lv , with u imp ire inte rity,

d e n t s ow a y disru tiv dis h rg a d me ts al oth r a c pta c criteria s e if i d for

th p rtic lar te t, wh n s bje te to a s e if i d n mb r of a plc tio s or a s e ifie d ratio

of th te t v lta e, u d r s e if i d c n itio s

3.1.2

ste p f ro t imp ls

f ast f ro t v lta e imp ls wh s time to p a is le s th n th t of a sta d rd lg tnin imp ls

b t n t le s th n th t of a v ry-f ast f ro t v lta e a d fin d in IEC 6 0 1-1

Note 1 to e try: F r this sta d rd, th ste p fo t imp lse v lta e f or test p rp ses is as sh wn in Fig re 1

Ke

U sp cifie p a v lu of ste p fo t imp lse test v lta e (kV)

S sp cifie ste p es of ste p fo t imp lse test v lta e (kV/µs)

T

1virtu l fo t time =

SU

(µs)

Th f olowin c n itio s sh l b satisf i d:

a) Th p a v lu of th re ord d test v lta e sh l b U ± 3 % This tolera c is th same as th t in IEC 6 0 0

f or sta d rd lg tnin imp lse

b) Ov r a v lta e e c rsio of n t les th n 0,6 U, th risin p rtio of th re ord d test v lta e sh l b e tirely

c ntain d b twe n two p ralel ln s of ste p es S a d se aratio 0,2 T

is d f i e as th time interv l b twe n th

origin a d th insta t wh n th v lta e h s d cre se to h lf th p a v lu of th wa eform whic is o tain d

fom system stu y Howe er, it sh l b as ure th t a u inte tio al d /dt switc in of th th ristors c n b

3.1.3

internal an external insulatio

air e tern l to th c mp n nts a d in ulatin materials of th v lv , b t c ntain d within th

pro le of th v lv or multiple v lv u it is c n id re a p rt of th intern l in ulatio s stem

of th v lv

Note 1 to e try: Th e tern l insulatio isth air b twe n th e tern l surf ac of th v lv or multiple v lv u it a d

its suro n in s

3.1.4

valve protective f irin

me n of prote tin th th ristors from e c s iv v lta e b f irin th m at a pre etermin d

valve stru ture

p y ic l stru ture h ldin th th ristor le els of a v lv whic is in ulate to th a pro riate

v lta e a o e e rth p te tial

3.2.3

red n ant th ristor levels

ma imum n mb r of th ristor le els in a th ristor v lv th t ma b s ort circ ite e tern ly or

intern ly d rin s rvic with ut af fe tin th s fe o eratio of th th ristor v lv a

d mo strate b ty e te ts, a d whic if a d wh n e c e e , wo ld re uire s utd wn of th

c n erter to re la e th faie th ristors or a c pta c of in re s d ris of f aiure

3.2.4

valve ba e electronics

ele tro ic u it, at e rth p te tial, whic is th interf ac b twe n th c ntrol s stem f or th

c n erter a d th th ristor v lv s

3.2.5

th ristor level

p rt of a th ristor v lv c mprisin a th ristor, or th ristors c n e te in p ralel, to eth r with

th ir imme iate a xi arie , a d re ctor, if a y

3.2.6

valve s ction

ele tric l a s mbly, c mprisin a n mb r of th ristors a d oth r c mp n nts, whic e hibits

pro-rate ele tric l pro ertie of a c mplete v lv

3.3 Terms related to ty e te ts

NOT Th se tests whic are c rie o t to v rify th t th v lv d sig wi me t th re uireme ts sp cifie In this

sta d rd, ty e tests are clas if i d u d r two major c te ories: diele tric tests a d o eratio al tests

3.4 Terms related to pro u tio te ts

NOT Th se tests whic are c rie o t to v rify pro er ma ufa ture, so th t th pro erties of a v lv c resp n

4.1 Guidel ne for the perf orman e of ty e te ts

4.1.1 Eviden e in l eu

Ea h d sig of v lv s al b s bje te to th ty e te ts s e if i d in this sta d rd If th v lv

is d mo stra ly simiar to o e pre io sly te te , th s p ler ma , in l e of p rf ormin a ty e

te t, s bmit a te t re ort of a pre io s ty e te t f or c n id ratio b th p rc a er This s o ld

b a c mp nie b a s p rate re ort d tai n th dif fere c s in th d sig a d d mo stratin

h w th refere c d ty e te t s tis e th te t o je tiv s for th pro o e d sig

b) Th s me v lv s ctio s s al b u e for al ty e te ts u le s oth rwis state

c) Prior to c mme c me t of ty e te ts, th v lv , v lv s ctio s a d/or th c mp n nts of

ma ufa ture

4.1.3 Seq en e of e ts

Th ty e te ts s e if i d c n b c r ie o t in a y ord r

NOT Tests in olvin p rtial disc arg me sureme t c n pro id a d d c n d n e if p rf orme at th e d of th

diele tric ty e test pro ramme

4.1.5 A mbient temperature f or te ting

Th te ts s al b p rf orme at th pre ai n ambie t temp rature of th te t fa i ty, u le s

a) If th in ulatio c ordin tio of th te te p rt of th th ristor v lv is b s d o

sta d rd rate with ta d v lta e a c rdin to IEC 6 0 1-1, c r e tio fa tors are o ly

b) If th in ulatio c ordin tio of th te te p rt of th th ristor v lv is n t b s d o

pro e ure a c rdin to IEC 6 0 0-1 is u e with th refere c atmo p eric pre s re b

For al diele tric te ts b twe n v lv termin ls, th re u d nt th ristor le els s al b s ort

circ ite , with th p s ible e c ptio of th v lv n n-p rio ic firin te t (s e 8.4) Th lo atio

of th ristor le els to b s ort circ ite s al b a re d b th p rc a er a d s p l er

NOT De e din o th d sig , lmitatio s c n b imp se u o th distrib tio of sh rtcirc ite th ristor le els

F r e ample,th re ma b a u p r lmit to th n mb r of sh rtcirc ite th ristor le els in o e v lv se tio

For o eratio al te ts, re u d nt th ristor le els s al n t b s ort circ ite Th te t v lta e

n:

rt

t ut

n

NNN

Ex erie c in in u try s ows th t, e e with th mo t c ref ul d sig of v lv s, it is n t

p s ible to a oid o c sio al ra d m f aiure of th ristor le el c mp n nts d rin s rvic

o eratio Ev n th u h th s f aiure ma b stre s-relate , th y are c n id re ra d m to

th e te t th t th c u e of f ai ure or th relatio s ip b twe n fai ure rate a d stre s c n ot b

pre icte or is n t ame a le to pre is q a titativ d finitio Ty e te ts s bje t v lv s or

v lv s ctio s, within a s ort time, to multiple stre s s th t g n ral y c re p n to th worst

stre s s th t c n b e p rie c d b th e uipme t n t more th n a few time d rin th l f e of

th v lv Co sid rin th a o e, th criteria for s c e sf ul ty e te tin s t o t b low th refore

p rmit a smal n mb r of th ristor le els to f ai d rin ty e te tin , pro idin th t th f aiure

are rare a d d n t s ow a y p tern th t is in ic tiv of in d q ate d sig

4.4.2 Criteria ap l cable to thyristor levels

Th f ol owin criteria are a pl c ble to th ristor le els:

a) If, f olowin a ty e te t a lste in Cla s 5, more th n o e th ristor le el (altern tiv ly

more th n 1 % of th s rie -c n e te th ristor le els in a c mplete v lv , if gre ter) h s

b c me s ort circ ite , th n th v lv s al b d eme to h v faie th ty e te ts

b) If, folowin a ty e te t, o e th ristor le el (or more if sti within th 1 % l mit h s b c me

s ort circ ite , th n th fai e le el(s) s al b re tore a d this ty e te t re e te

c) If th c mulativ n mb r of s ort circ ite th ristor le els d rin al ty e te ts is more th n

3 % of th s rie -c n e te th ristor le els in a c mplete v lv , th n th v lv s al b

d eme to h v faie th ty e te t pro ramme

d) Wh n ty e te ts are p rf orme o v lv s ctio s, th criteria for a c pta c a o e als

– c e k of th v lta e gra in circ its

g) Th ristor le el s ort circ its o c rin d rin th c e k te ts s al b c u te a p rt of th

criteria for a c pta c d fin d a o e In a ditio to s ort circ ite le els, th total n mb r

of th ristor le els e hibitin fa lts whic d n t re ult in th ristor le el s ort circ it, whic

are dis o ere d rin th ty e te t pro ramme a d th s b e u nt c e k te ts, s al n t

e c e 3 % of th s rie -c n e te th ristor le els in a c mplete v lv If th total n mb r

of s c le els e c e s 3 %, th n th n ture of th fa lts a d th ir c u e s al b re iewe

a d a ditio al a tio , if a y, a re d b twe n p rc a er a d s p ler

h) Wh n a plyin th p rc nta e criteria to d termin th p rmite ma imum n mb r of

s ort circ ite th ristor le els a d th p rmite ma imum n mb r of le els with f aults

whic h v n t re ulte in a th ristor le el b c min s ort circ ite , it is u u l pra tic to

ro n off al fra tio s to th n xt hig e t inte er, a i u trate in Ta le 1

Table 1 – Th ristor level f aults permit ed d rin ty e te ts

Number of h ristor le els

r)

Number of hy ristor le els

4.4.3 Criteria appl cable to the valve a a whole

Bre k own of or e tern l f l s o er a ro s c mmo ele tric l e uipme t a s ciate with more

th n o e th ristor le el of th v lv , or disru tiv dis h rg in diele tric material f ormin p rt of

th v lv stru ture, c oln d cts, l g t g id s or oth r in ulatin p rts of th p ls

tra smis io a d distrib tio s stem s al n t b p rmite

Comp n nt a d c n u tor s rfa e temp rature , to eth r with a s ciate c r e t c ryin

joints a d c n e tio s, a d th temp rature of a ja e t mo ntin s rfa e s al at al time

remain within l mits p rmite b th d sig

5 List of ty e te ts

Ta le 2 b low lsts th ty e te ts giv n in Cla s s 6 to 13

Table 2 – List of y e te ts

Testswith tra sie t forward v lta e d rin th re o ery p rio 10 Valv or v lv -se tio

On -lo p f ault c re t test with re-a ple f orward v lta e 1 3.2 Valv or v lv -se tio

Multiple-lo p fa lt c re t test with ut re-a ple forward v lta e 1 3.3 Valv or v lv -se tio

Testsf or v lv inse sitivity to ele troma n tic disturb n e 12 Valv or v lv -se tio

6 Diele tric te ts on valve support

Th prin ip l o je tiv s of th s te ts are:

a) to v rif y th v lta e with ta d c p bi ty of th in ulatio of th v lv s p ort, c ol n d cts,

l g t g id s a d oth r in ulatin c mp n nts a s ciate with th v lv s p ort If th re is

in ulatio to e rth oth r th n th v lv s p ort th n a ditio al te ts ma b n c s ary

b) to v rify th t th p rtial dis h rg in e tio a d e tin tio v lta e are a o e th ma imum

NOT De e din u o th a plc tio , it c n b p s ible to elmin te some of th tests o th v lv su p rt,

su je t to a re me t b twe n p rc aser a d su pler

6.2 Te t object

Th v lv s p ort to b u e f or th te ts ma b a re re e tativ s p rate o je t in lu in

re re e tatio of th a ja e t p rts of th v lv , or ma f orm p rt of th a s mbly u e for

sin le v lv or multiple v lv u it te ts It s al b a s mble with al a ci ary c mp n nts in

pla e a d s al h v th a ja e t e rth p te tial s rfa e pro erly re re e te Th c ola t

s al b in a c n itio re re e tativ of th mo t o ero s s rvic c n itio for th p rp s of

th te t

s e ifie 1 min te t v lta e in a pro imately 10 s, k pt c n ta t f or 1 min, re u e to th

s e ifie 3 h te t v lta e, k pt c n ta t for 3 h a d th n re u e to z ro Durin th la t h ur

NOT 1 If a in re sin tre d in th ma nitu e or rate of p rtial disc arg is o serv d th test d ratio c n b

e te d d b mutu l a re me t b twe n th p rc aser a d su pler

Th te t s al th n b re e te with th v lta e of o p site p larity

NOT 2 Bef ore re e tin th test with o p site p larity, th v lv su p rt ma b sh rtcirc ite a d e rth d for

se eral h urs Th same pro e ure ma b f olowe at th e d of th d.c v lta e test

to eth r, a d th a.c te t v lta e th n a ple b twe n th two main termin ls th s c n e te

a d e rth Startin from a v lta e n t hig er th n 5 % of th ma imum te t v lta e, th

v lta e s al b rais d to th s e ifie 1 min te t v lta e U

tas1within a pro imately 10 s, k pt

c n ta t for 1 min, re u e to th s e ifie 3 min te t v lta e U

tas2, k pt c n ta t for 3 min

t as

2

kkkU

Th te t s al c mpris thre a plc tio s of p sitiv p larity a d thre a plc tio s of n g tiv

p larity switc in imp ls v lta e b twe n th main termin ls, whic are in c mmo , a d

Th te t s al c mpris thre a plc tio s of p sitiv p larity a d thre a plc tio s of n g tiv

p larity lg tnin imp ls v lta e b twe n th main termin ls, whic are in c mmo , a d

e rth

A sta d rd lg tnin imp ls v lta e wa e h p in a c rd n e with IEC 6 0 0 s al b u e

Th te t v lta e s al b s le te in a c rd n e with th in ulatio c -ordin tio of th HVDC

s b tatio

NOT If n w insulatin materials with ut pro e servic e p rie c are emplo e , c nsid ratio is giv n to a

a ditio al ste p f ro t imp lse test

7 Diele tric te ts f or multiple valve units (MVU)

Th prin ip l o je tiv s of th s te ts are:

a) to v rify th v lta e with ta d c p bi ty of th e tern l in ulatio of th MVU, with re p ct

to its s r o n in s, e p cialy for th v lv /MV c n e te at p le p te tial;

b) to v rif y th v lta e with ta d c p bi ty b twe n sin le v lv s in a MVU stru ture;

c) to v rif y th t th p rtial dis h rg le els are within s e ifie lmits

NOT De e din u o th a plc tio , it c n b p s ible to elmin te some of th tests o th MVU, su je t to

Wh n th low-v lta e termin l of th MVU is n t c n e te at d.c n utral p te tial, c re s al

b ta e to s ita ly termin te th low v lta e termin l of th MVU d rin te ts to c re tly

simulate th v lta e a p arin at this termin l Earth pla e s al b u e , wh s s p ratio

s al b d termin d b th pro imity of oth r v lv s or MVU a d e rth p te tial s rf ac s

NOT Wh n th low v lta e termin l of th MVU is n t c n e te at d.c n utral p te tial th folowin test

meth d c n b use as a altern tiv pro id d th t th v lta e withsta d c p bi ty b twe n th in er p rts of a

MVUis c e k d a e u tely d rin oth r tests (e.g th tests b twe n th v lv termin ls) a d th MVU low v lta e

termin l is c p ble of withsta din th in re se v lta e stres In this c se th MVU diele tric tests c uld b

p rorme o a sh rtcirc ite MVU

Th test v lta e is a ple b twe n th MVU with itstermin l sh rtcirc ite a d e rth

NOT 1 If a in re sin tre d in th ma nitu e or rate of p rtial disc arg is o serv d, th test d ratio c n b

e te d d b mutu l a re me t b twe n th p rc aser a d su pler

Th te t s al th n b re e te with th v lta e of o p site p larity

NOT 2 Bef ore re e tin th test with o p site p larity, th MVU c n b sh rtcirc ite a d e rth d f or se eral

h urs.Th same pro e ure c n b f olowe at th e d of d.c.v lta e test

a p arin b twe n th hig -v lta e termin l of th MVU a d e rth;

7.3.2 MVU a.c v ltage te t

If a MVU e p rie c s a.c or c mp site a.c plu d.c v lta e stre s s b twe n a y two

termin ls, th with ta d c p bi ty of whic is n t a e u tely d mo strate b oth r te ts, th n

it wi b n c s ary to p rf orm a a.c v lta e te t b twe n th s termin ls of th MVU

To p rf orm th te t, th te t v lta e s urc s al b c n e te to th p ir of MVU termin ls in

q e tio Th p int of e rth c n e tio is d p n e t o th te t circ it ara g me t

Startin f rom a v lta e n t hig er th n 5 % of th 1 min te t v lta e, th v lta e s al b

rais d to th s e ifie 1 min te t v lta e in a pro imately 10 s, k pt c n ta t f or 1 min, th n

re u e to th 3 min v lu , k pt c n ta t f or 3 min a d th n re u e to z ro

Durin th la t 1 min of th s e if i d 3 min te t, th le el of p rtial dis h rg s al b

mo itore a d re ord d If th v lu of p rtial dis h rg is b low 2 0 pC, th d sig ma b

a c pte u c n itio aly If th v lu of p rtial dis h rg e c e s 2 0 pC, th te t re ults s al

t am

2

kkkU

U

mm

termin ls of th MVU d rin ste d -state o eratio , in lu in c mmutatio o ers o t;

A sta d rd switc in imp ls v lta e wa e h p in a c rd n e with IEC 6 0 0 s al b u e

Th MVU switc in imp ls te t v lta e s al b a ple b twe n th hig v lta e termin l of

SI P L

m

is th switc in imp ls prote tiv le el d termin d b in ulatio c ordin tio ta in

into a c u t th are ter(s) c n e te b twe n th MVU hig v lta e termin l a d

If th te t pre crib d a o e d e n t a e u tely te t th switc in imp ls with ta d b twe n

al termin ls of th MVU, th n c n id ratio s al b giv n to p rformin e tra te ts to c e k

A sta d rd lg tnin imp ls v lta e wa e h p in a c rd n e with IEC 6 0 0 s al b u e

Th MVU lg tnin imp ls te t v lta e s al b a ple b twe n th hig v lta e termin l of

is th lg tnin imp ls prote tiv le el d termin d b in ulatio c -ordin tio , ta in

If it c n ot b d mo strate th t th te t pre crib d a o e a e u tely te ts th l g tnin

imp ls with ta d v lta e b twe n al termin ls of th MVU, th n c n id ratio s al b giv n

NOT 2 In some circ msta c s, c nsid ratio is giv n to a se arate ste p f ro t imp lse v lta e test in ord r to

su pleme t th v lv ste p fo t imp lse test (se 8.3.6)

8 Diele tric te ts betwe n valve terminals

Th s te ts are inte d d to v rify th d sig of th v lv re ardin its v lta e-relate

c ara teristic f or v rio s ty e of o erv lta e (d.c a.c switc in imp ls , lg tnin imp ls

a d ste p-f ro t imp ls o erv lta e ) Th te ts s o ld d mo strate th t:

a) th v lv wi with ta d th s e if i d o erv lta e ;

b) a y intern l o erv lta e prote tiv circ its are ef fe tiv ;

c) p rtial dis h rg s wi b within s e ifie lmits u d r s e if i d te t c n itio s;

d) th intern l d.c gra in circ its h v s ff i ie t p wer ratin ;

e) th v lv ele tro ic circ its are immu e to interfere c a d f un tio c r e tly;

f ) th v lv c n b f ire f rom s e ifie hig o erv lta e c n itio s with ut d ma e

It s o ld b n te th t th te ts d s rib d in this cla s are b s d o sta d rd wa e s a e

a d sta d rd te t pro e ure a d v lo e f or th te tin of hig -v lta e a.c s stems a d

c mp n nts This a pro c off ers gre t a v nta e to th in u try b c u e it al ows mu h of

th e istin te h olo y of hig -v lta e te tin to b c rie o er to th q alf i atio of HVDC

v lv s On th oth r h n , it s al b re o niz d th t a p rtic lar HVDC a plc tio ma re ult

in wa e s a e diff ere t from th sta d rd a d, in this c s , th te t ma b mo if i d s a

Th c ola t s al b in a c n itio th t re re e ts s rvic c n itio s e c pt f or flow rate whic

c n b re u e If a y o je t e tern l to th stru ture is n c s ary for pro er re re e tatio of

th stre s s d rin te ts it s al b in lu e or simulate in th te t Earth pla e s al b

u e , wh s s p ratio s al b d termin d b th pro imity of oth r a ja e t v lv s a d e rth

p te tial s rf ac s

Th te t o je t u e f or th v lv diele tric te ts wi n rmaly n t p rmit th a plc tio of

atmo p eric c re tio to th s e ifie te t v lta e with ut o erstre sin th th ristors or

oth r intern l c mp n nts For this re s n, n atmo p eric c r e tio fa tor is a pl e to a y

of th diele tric te ts b twe n v lv termin ls Th s p ler s al d mo strate th t th eff ects

of atmo p eric c n itio s o th v lv intern l with ta d h v b e alowe f or a e u tely

Se arate te ts to v rify th t c p bi ty ma b c r ie o t o a c s -b -c s b sis

8.3 Te t req irements

8.3.1 Valve d.c v ltage te t

main termin l of th v lv a d e rth, with th oth r main termin l of th v lv e rth d

Startin from a v lta e n t hig er th n 5 % of th ma imum te t v lta e, th v lta e s al b

rais d to th s e ifie 1 min te t le el within a pro imately 10 s, k pt c n ta t f or 1 min,

re u e to th s e ifie 3 h te t v lta e, k pt c n ta t for 3 h a d th n re u e to z ro

Durin th la t h ur of th s e if i d 3 h te t, th n mb r of p rtial dis h rg s e c e in

Th n mb r of p ls s e c e in 3 0 pC s al n t e c e 15 p ls s p r min te a era e o er

th re ordin p rio Of th s , n more th n s v n p ls s p r min te s al e c e 5 0 pC, n

more th n thre p ls s p r min te s al e c e 1 0 0 pC, a d n more th n o e p ls p r

NOT 1 If a in re sin tre d in th rate or ma nitu e of p rtial disc arg is o serv d, th test d ratio c n b

e te d d b mutu l a re me t b twe n th p rc aser a d su pler

Th te t s al th n b re e te with th v lta e of o p site p larity

NOT 2 Bef ore re e tin th test with o p site p larity, th v lv termin ls c n b sh rtcirc ite a d e rth d for

se eral h urs Th same pro e ure c n b folowe at th e d of d.c v lta e test

To p rf orm th te t, th te t v lta e s urc (s) s al b c n e te to th v lv termin ls Th

p int of e rth c n e tio is d p n e t o th te t circ it ar a g me t Startin from a v lta e

is th ma imum ste d -state n -lo d p a e-o-p a e v lta e o th v lv sid of th

tra sformer;

is th c mmutatio o ers o t fa tor in th re ers dire tio , c lc late for re o ery at

th cre t of th lo d reje tio o erv lta e (α = 9 °) in lu in th in re s arisin f rom

th re ers re o ery c arg of th th ristors k

symmetric l a.c test v lta e of r.m.s v lu e u l to U

8.3.3 Valve impuls te ts (general)

Valv imp ls te ts s o ld me t th folowin re uireme ts:

a) This sta d rd p rmits s le tio b twe n two v lv imp ls te t pro ramme d p n in

u o th c st b n fit c n id ratio s for th a plc tio

In th f irst altern tiv , th te t s fety fa tor for l g tnin a d switc in imp ls te ts is 1,1

a d for ste p f ro t imp ls te ts 1,15 with th th ristors pre e t, plu 1,15 a d

1,2 re p ctiv ly with th th ristors re la e b in ulatin blo k

In th s c n altern tiv , th te t s f ety f actor for lg tnin a d switc in imp ls te ts is

1,15 a d for ste p fro t imp ls te ts 1,2 with th th ristors pre e t

Furth r inf ormatio is giv n in An e A

b) If th v lv uti s s prote tiv f irin , imp ls te t v lta e a ple in th f orward dire tio

wi b pro p ctiv o ly It s al b d mo strate th t a y s c prote tiv f irin circ its

e) Durin th imp ls te ts, th v lv s al b mo itore for c re t b h vio r with re ard to

ele troma n tic interf ere c (s e Cla s 12) For this to b p s ible, th s p rts of th

v lv b s ele tro ic th t are n c s ary for th pro er e c a g of informatio with th

te t v lv s al b in lu e

8.3.4 Valve switc in impuls te t

A sta d rd switc in imp ls v lta e wa e h p in a c rd n e with IEC 6 0 0 s al b u e

Th te t s al c mpris thre a plc tio s of p sitiv p larity a d thre a plc tio s of n g tiv

p larity switc in imp ls v lta e of s e if i d ampltu e with th v lv ele tro ic initialy

e ergiz d

Th p sitiv p larity te t s al b re e te with th v lv ele tro ic initialy d -e ergiz d

If th v lv in orp rate prote tiv f irin a ain t o erv lta e in th forward dire tio , whic

o erate d rin th f orward te t, thre a ditio al a pl c tio s of p sitiv switc in imp ls s of

A sta d rd lg tnin imp ls v lta e wa e h p in a c rd n e with IEC 6 0 0 s al b u e

Th te t s al c mpris thre a plc tio s of p sitiv p larity a d thre a plc tio s of n g tiv

p larity of a lg tnin imp ls of s e ifie ampltu e

If th v lv in orp rate prote tiv f irin a ain t o erv lta e in th f orward dire tio , whic

o erate d rin th f orward te t, thre a ditio al a plc tio s of p sitiv imp ls s of a a re d

8.3.6 Valve ste p f ront impuls te t

Th virtu l ste p e s S a d cre t v lu of th worst c s v lv ste p f ro t imp ls v lta e

stre s s al b d termin d f rom s stem stu ie Th virtu l ste p e s s al b e alu te from

th stu y re ults a th ma imum du/d in kV/µs, a era e o er 6 % of th total v lta e

e c rsio

Wh n d rivin th te t v lta e, th virtu l ste p e s a d ampltu e d riv d from th s stem

stu ie s al b th b multiple b th rele a t te t s f ety f actor, i.e th virtu l f ro t time s al

NOT If o erv lta es with wa ef ro ts sh rter th n 0,1 µs are e p cte to o c r in servic , th p rc aser a d

su pler c n a re o a a pro riate v ry f ast f ro t v lta e test in pla e of th ste p fo t imp lse test d scrib d

a o e

Th te t s al c mpris thre a plc tio s of p sitiv p larity a d thre a plc tio s of n g tiv

p larity of a ste p f ro t imp ls of s e if i d ampltu e

If th v lv in orp rate prote tiv firin a ain t o erv lta e or e c s iv du/dt in th f orward

dire tio , whic o erate d rin th f orward te t, thre a ditio al a pl c tio s of p sitiv

imp ls s of a a re d ampltu e a d fro t time, s th t th v lv d e n t fire, s al b ma e

Th v lv ste p f ro t imp ls te t with ta d v lta e U

is th ste p fro t imp ls prote tiv le el of th v lv ar e ter a d termin d b th

c ordin tin c re t from s stem stu ie ;

v lv f or th s rg ar e ter meth d B in 8.4.3 In this c s , s p ler s al s ow th e uiv le c

b twe n th v lv s ctio te t a d th c mplete v lv te t

If immu ity to ele troma n tic disturb n e d e to c u ln b twe n a ja e t v lv s in a MVU

is to b d mo strate b a pro c o e a in 12.3.2, th n in a ditio to th te t v lv , a

a xi ary v lv (or s f ficie t p rtio th re f s al b in lu e in th te t This a xi ary v lv is

th te t o je t in s f ar a th d mo stratio of immu ity to ele troma n tic disturb n e b

g ometric l y in a c rd n e with th s rvic ara g me t Th ele troma n tic disturb n e

te t o je t s al b f orward bia e at th trig erin in ta t of th v lv s bje te to n

n-p rio ic f irin Th ele tro ic of th ele troma n tic disturb n e te t o je t s al b

e c a g of inf ormatio with th ele troma n tic disturb n e te t o je t s al b in lu e

NOT Th sp cif i g ometric ara g me t to b use a d th ma nitu e of th f orward v lta e for th

ele troma n tic disturb n e test o je t are a re d, b se o th d sig of MVU

Th te t s al c mpris thre a pl c tio s of p sitiv switc in imp ls v lta e a d th v lv

trig ere into c n u tio at th cre t of th imp ls

Th imp d n e of th imp ls g n rator s al b s le te to re ro u e n t o ly th turn-o

c re t arisin f rom th dis h rg of th circ it stra c p cita c , b t als th t arisin f rom

c mmutatio of th ma imum v lu of s rg ar e ter c r e t d termin d f rom s stem stu ie

Th te t s al b p rforme at ro m temp rature

Two meth d f or a hie in this are a c pta le a d s rib d b low

A Paral el capacitor meth d In this meth d, a c p citor s al b c n e te in p ralel with

termin ls Wh n th c re t thro g a d v lta e a ro s th are ter re c e th pre crib d

If th v lv is trig ere b prote tiv f irin b low th switc in imp ls prote tiv le el of th

v lv ar e ter, th n th te t s al b re e te with th re u d nt th ristor le els o eratio al If

th v lv sti trig ers b prote tiv firin b low th switc in imp ls prote tiv le el, th te t

s al a ain b re e te with th imp ls le el re u e to ju t b low th prote tiv firin

thre h ld a d th v lv trig ere b th n rmal firin circ its

NOT 1 A v lta e test saf ety fa tor at le st e u lto th dif fere c b twe n th ma imum tolera c a d minimum

tolera c of th v lv arester (y ic ly a o t 5 %) is alre d in lu e in this test resultin in a c resp n in

in re se in c re t.Th ref ore, n se arate test saf ety fa tor is a ple to th test v lta e a d c re t

NOT 2 Be a se of lmitatio s in th pra tic l size of imp lse g n rators, meth d B is suita le o ly f or v lv s of

low v lta e ratin Th ref ore, wh n system stu ies sh w a n e for a c rate turn-o c re t re rese tatio at

times lo g r th n 10 µs, th v lv n n-p rio ic f irin test c n b p rf orme usin meth d A a d b su pleme te

b se arate tests o v lv se tio susin meth d B

NOT 3 In some d sig s, f irin of th v lv f rom hig v lta e c n b in ibite b a v lta e me sureme t a ros

th v lv , or b a c re t me sureme t in th p ralel v lv arester If this is th c se, th d tais of th n

n-p rio ic f irin test are a re d b th p rc aser a d th su pler ta in into a c u t th c ara teristics of th

in ibitin circ its emplo e

9 Periodic f iring and extinction te ts

Th prin ip l o je tiv s of th p rio ic firin a d e tin tio te ts are:

a) to c e k th a e u c of th th ristor le els a d a s ciate ele tric l circ its in a v lv

with re ard to c re t, v lta e a d temp rature stre s s at turn-o a d turn-off u d r th

worst re etitiv stre s c n itio s;

this sta d rd are v ld f or v lv s ctio s c ntainin f i e or more s rie -c n e te th ristor

le els If te ts with fewer th n fiv le els are pro o e , a ditio al te t s f ety f actors s al b

a re d Un er n circ msta c s s al th n mb r of s rie -c n e te le els f or te ts b le s

th n thre

Th v lv or v lv s ctio s u d r te t s al b a s mble with al a xi ary c mp n nts Wh n

re uire , a pro ortio aly s ale v lv ar e ter s al b in lu e Th ar e ter s al b s ale

c re p n s at le st to th ma imum c ara teristic of th s rvic are ter

9.3 Te t req irements

9.3.1 General

Th te ts s al b p rf orme u in s ita le te t circ its givin stre s s e uiv le t to th

a pro riate s rvic c n itio s s c a two six-p ls brid e in b c - o-b c c n e tio or a

a pro riate s nth tic te t circ it

Th c ola t s al b in a c n itio re re e tativ of s rvic c n itio s Flow a d temp rature,

in p rtic lar, s al b s t to th mo t u f av ura le v lu s a pro riate to th te t in q e tio

Th e uiv le t s rvic c n itio s to b re ro u e are s e ifie in 9.3.2 to 9.3.6 Su cla s s

9.3.2, 9.3.3 a d 9.3.4 are d f i e f or o eratio with ma imum c ntin o s o eratin th ristor

ju ctio temp rature If hig er firin or re o ery v lta e , altern tiv ly lower d la or e tin tio

a gle , are p s ible u d r lo din c n itio s whic d n t c in id with ma imum c ntin o s

o eratin th ristor ju ctio temp rature, th n th s s al als b re ro u e Ex mple wh re

this ma b th c s in lu e winter o erlo d o eratio , a d th u e of th c n erters to lmit

th e p rt of s rplu re ctiv p wer into th a.c n twork at lg t lo d c n itio s Wh n te ts

are p rforme to re ro u e s c c n itio s, th te t c r e t a d c ola t temp rature ma b

a ju te to refle t th worst c s th rmal c n itio s a pro riate to th s rvic c n itio s

b in re re e te in th te t

To o tain v lta e a d c r e t stre s s re re e tativ of s rvic c n itio s, it is imp rta t th t

th total stra c p cita c a s ciate with th v lv a d th in u ta c s c ntrib tin to th

c mmutatin re cta c b pro erly re re e te in th circ it In a d blo k d six-p ls brid e

circ it, e c v lv e p rie c s a p ralel imp d n e e u l to 1,5 time th t of a sin le of -state

v lv If a te t circ it oth r th n a six-p ls brid e is u e , th n it is imp rta t th t this fe ture

is als pro erly re re e te in th circ it

Wh n te tin with v lv s ctio s, th s aln f actor f or te ts s al b a ple

Te t v lta e a d te t circ it re ista c s a d in u ta c s s al b d termin d f rom th f ul

s ale v lu s b b in multipl e b a s aln fa tor, whie te t circ it c p cita c s s al b

d termin d from th ful s ale v lu s b b in divid d b a s al n f actor

In ord r to re ro u e c r e t h atin eff ects, th p rio ic f irin a d e tin tio te ts s o ld b

p rforme at th s rvic f re u n y Wh n this is n t p s ible a d th s rvic f re u n y is

a pro imately c mp n ate th diff ere c in f re u n y d p n e t lo s s, a n c s ary to

d mo strate th pro er stre sin of th e uipme t Guid n e o th s n itivity to f re u n y of

th v rio s lo s pro u in me h nisms c n b fo n in IEC 618 3

Durin th te ts, th temp rature ris of th mo t critic l h at pro u in c mp n nts a d th ir

a ja e t mo ntin s rf ac s s al b mo itore to v rif y th t th ma imum temp rature

re c e are within lmits p rmite b th d sig (s e 4.4.3) Th n mb r a d lo atio of th

c mp n nts to b mo itore s al b a re d, b t s al b n t le s th n thre e ample e c of:

th ristor c s temp rature, d mpin re istor s rfa e temp rature, a d v lv s tura le re ctor

s rf ac temp rature If le s th n thre items of a ty e of c mp n nt are in tale in a v lv , al

is th ma imum ste d -state n -lo d p a e-o-p a e v lta e o th v lv sid of th

tra sformer;

Thre ma imum o eratin d ty te t c n itio s s al b s tisfie a d taie in 9.3.2.2, 9.3.2.3

a d 9.3.2.4 b low Th s c n itio s c n b s tisfie sin ly or in a y c mbin tio

NOT Su je t to a re me t b twe n th p rc aser a d su pler, c nsid ratio c n b giv n to a ply th c re t

a d v lta e stres es se arately, pro id d it c n b d mo strate th t th o je tiv s of th testsare met

9.3.2.3 Maximum c ntin o s rec very v ltage te t

Op rate th v lv or v lv s ctio s at a d la a gle α s th t th pro p ctiv ste v lta e at

re o ery at c r e t z ro u

r

is n t lower th n th gre ter of:

o eratio at ma imum c ntin o s o eratin th ristor ju ctio temp rature;

γ is th ste d -state e tin tio a gle c re p n in to th in erter s rvic c n itio th t

le d to th hig e t v lu of u

ri, c in id nt with o eratio at ma imum c ntin o s

o eratin th ristor ju ctio temp rature

Um

22

t pv 122

2

sinsin2

1,5

1,7

Δ V

m is th ele troma n tic n tc f actor (s e 5.1.4 of IEC 618 3, 19 9);

α a d µ c re p n to th re tif i r or in erter ste d -state s rvic c n itio for whic U

2

tp 1

[sin2

α + sin2

(α + µ)] is ma imum, c in id nt with o eratio at ma imum c ntin o s

o eratin th ristor ju ctio temp rature

If a two × six-p ls b c - o-b c te t circ it is u e , th c n itio s re uire for this te t are

a tomatic l y met wh n p rf ormin 9.3.2.2 a d 9.3.2.3 Howe er, dif fere c s to twelv -p ls

is th ma imum ste d -state n -lo d p a e-o-p a e v lta e o th v lv sid of th

tra sf ormer;

Prior to th te t, th v lv or v lv s ctio s, s al b bro g t to th rmal e ui brium u d r th

c n itio s of 9.3.2.2 Op rate th v lv or v lv s ctio s, f or th s e ifie time, at a d la

a gle α = 9 ° s th t th firin a d pro p ctiv re o ery v lta e are n t le s th n U

tp 2

× √2

this cla s Th c re t d rin th p rio of α = 9 ° o eratio s al b at le st e u l to th

ma imum v lu for α = 9 ° o eratio , d termin d from s stem stu ie , multiple b a te t

s f ety fa tor of 1,0 Afer th s e ifie time at α = 9 °, return to th c n itio s c r e p n in

to 9.3.2.2 a d maintain c n ta t for at le st 15 min

Th d ratio of o eratio at α = 9 ° s al b at le st twic th n rmal p rmite time in s rvic

at this d la a gle

De e din o th temp rary o erv lta e c ntrol strate y for th s h me, te ts of dif fere t

d ratio , with diff ere t v lu s of k

r, ma b re uire

9.3.4 Minimum a.c v ltage te ts

is th lowe t ste d -state n -lo d p a e- o-p a e v lta e o th v lv sid of th

tra sformer;

9.3.4.2 Minimum delay angle te t

Op rate th v lv or v lv s ctio s at a re tifier d la a gle α s th t th v lv (s ctio ) firin

wh re α is th smal e t ste d -state re tif i r d la a gle in s rvic c in id nt with o eratio at

ma imum c ntin o s o eratin th ristor ju ctio temp rature

Th d ratio of th te t s al b n t le s th n 15 min af ter th e it c ola t temp rature h s

sta i z d

If th o eratin strate y of th c n erter p rmits temp rary o eratio with α b low th

minimum ste d -state v lu , th n o eratio at this re u e v lu s al als b d mo strate

Th d ratio of o eratio at th tra sie t α v lu s al b at le st twic th n rmal p rmite

time in s rvic at this d la a gle

It s al b d mo strate th t th v lv (s ctio s) fire re ularly at b th th ste d -state a d

tra sie t v lu s of α

=

3 0ofγ

γ is th smale t ste d -state e tin tio a gle in s rvic c in id nt with o eratio at

ma imum o eratin th ristor ju ctio temp rature;

f is th s rvic f re u n y

Th d ratio of th te t s al b n t le s th n 15 min af ter th e it c ola t temp rature h s

sta i z d

If th o eratin strate y of th c n erter p rmits temp rary o eratio with γ b low th

minimum ste d -state v lu , th n o eratio at this re u e v lu s al als b d mo strate

Th d ratio of o eratio at th tra sie t minimum γ v lu s al b at le st twic th n rmal

p rmite time in s rvic at this e tin tio a gle

It s al b d mo strate th t n c mmutatio faiure o c r at eith r th ste d -state or

tra sie t minimum v lu s of γ

9.3.5 Temp rary un erv ltage te t

Th p rp s of this te t is to v rif y th c r e t p rf orma c of th s v lv d sig s in whic

termin ls

Prior to th te t, th v lv or v lv s ctio s s al b o erate u d r c n itio s c re p n in

to 9.3.4.2 (ste d -state minimum α) e c pt f or th te t c re t whic ma b re u e Op rate

th v lv or v lv s ctio s, f or th s e ifie time at minimum tra sie t v lu of α, c in id nt

with a te t v lta e U

tp 4, whic s al b d termin d a f olows:

16u

NN

Th d ratio of o eratio with temp rary u d rv lta e s al b n t le s th n th b c -u fa lt

cle rin time for th a.c s stem, in lu in , wh re a pro riate, a y d a - ime arisin from

a to-re lo e s q e c s in th a.c s stem

Af ter th s e ifie time, return to th c n itio s c r e p n in to 9.3.4.2

It s al b d mo strate th t th v lv (s ctio s) remain c ntrola le o er th f ul d ratio of

th temp rary u d rv lta e

De e din o th le el of temp rary u d rv lta e a d th meth d of te t a o te , it ma n t

b p s ible to maintain n rmal o eratio of th te t circ it d rin th te t If this o c rs, it s al

b d mo strate th t this is a in ere t c n e u n e of th a n rmal v lta e c n itio s

d rin th te t a d n t a re ult of a f aiure of th v lv (s ctio s) to re p n c re tly to th

f irin c ntrol sig als

9.3.6 Intermitent direct c r ent te ts

Th te t s al b p rforme with th v lv c ola t at its ma imum temp rature Th stre s s

arisin f rom intermite t dire t c r e t o eratio f or two o eratin c n itio s s al b

Th d ratio of th te t s al b at le st twic th n rmal p rmite time in s rvic for

o eratio with intermite t dire t c r e t u d r th s e ifie c n itio s

Th te ts s al d mo strate s fe turn-o of th th ristors, in a c rd n e with th d sig , at th

re uisite n mb r of firin s p r c cle For a eff ectiv d mo stratio , th b h vio r of th v lv

(s ctio s) s o ld b e plore with a a ju ta le intermite t dire t c r e t in whic th

d ratio of th p rio s of z ro c r e t c n b v rie f rom z ro to a v lu whic is lo g,

c mp re with th turn-of f time of th th ristors

NOT Th ma imum n mb r of c re t p lses p r c cle in a v lv d rin intermite t dire t c re t o eratio is

n rmaly fo r for v lv suse in HV C tra smis io a plc tio s a d eig t for v lv s use in b c - o-b c sc emes

10 Te ts with transient f orward v ltage during the recovery period

10.1 Purpos of e ts

Th prin ip l o je tiv of th te ts with tra sie t forward v lta e d rin th re o ery p rio is

to c e k th t, at ma imum temp rature, th v lv wi tolerate th a plc tio of tra sie t

f orward v lta e in th p rio imme iately f olowin c r e t e tin tio Th te ts s al

d mo strate th t th v lv wi eith r with ta d th tra sie t forward v lta e or wi turn o

s fely

A s c n o je tiv is to d mo strate th t, for tra sie ts in th forward dire tio a ple af ter

th re o ery interv l, th prote tiv f irin le el a d du/dt with ta d of a v lv c ntainin

o eratin th ristors at th ir ma imum ste d -state ju ctio temp rature are c n iste t with th

d sig

10.2 Te t object

Se 9.2

10.3 Te t req irements

Th te t re uireme ts are th s me a f or th p rio ic f irin a d e tin tio te ts, Cla s 9,

e c pt th t a imp ls g n rator, c n e te a ro s a in erter v lv or v lv s ctio , is als

re uire Trig erin of th imp ls g n rator s al b s n hro iz d with th n rmal o eratin

wa e h p s to a ply forward imp ls s to th v lv or v lv s ctio s u d r te t in th interv l

imme iately folowin c re t e tin tio

c ntin o s o eratin th ristor ju ctio temp rature Th o eratin c n itio s for th v lv

(s ctio s) u d r te t s al b th s of 9.3.4.3 for ste d -state minimum γ

Th imp ls g n rator s al b s t s th t th pro p ctiv p a v lta e in th forward dire tio

NOT 2 Th se sitivity of th e uipme t to imp lses of diff ere t wa esh p s is d sig d p n e t Su je t to

a re me t b twe n p rc aser a d su pler, c nsid ratio c n b giv n to restrictin th test to a sin le imp lse

wa esh p ,pro id d it c n b sh wn th t th o je tiv s of th test are met

Not le s th n f i e imp ls s of e c ty e s al b a ple sin ly, at v rio s time in th interv l

f rom c r e t z ro to th e d of th n g tiv re o ery p rio Thre a ditio al imp ls s of e c

ty e s al b a ple afer th re o ery p rio h s e d d

NOT 3 Th re o ery p rio is c nsid re to h v e d d wh n th th ristors h v re ain d th ir ful off -state

v lta e a d d /dt withsta d c p bi ties This c n b mark d, in some d sig s, b th e din of a time win ow

d rin whic prote tio circ its h v in re se se sitivity Th rele a t time isstate b th su pler

Th v lv or v lv s ctio s s al eith r with ta d th imp ls s or turn-o s f ely

If th v lv in orp rate prote tiv firin a ain t tra sie t f orward v lta e in th re o ery

p rio th n it s al b d mo strate th t th prote tio o erate a inte d d

Th v lv s al n t fire for a y imp ls a ple af ter th re o ery p rio h s e d d, u le s

f irin c n b s own to b d e to a le itimate re p n e of th prote tiv f irin circ its d rin th

of f-state (s e Note 3 a o e) If prote tiv firin o c rs with th s e ifie wa e h p s, wh n

a ple af ter th re o ery p rio h s e d d, th n thre a ditio al a pl c tio s of p sitiv

imp ls s of re is d ampltu e a d fro t time, s c th t th v lv d e n t f ire, s al b ma e

It s al b d mo strate th t th re is d ampltu e a d fro t time for n n- irin are c n iste t

with th prote tiv f irin strate y f or th v lv

1 Valve f ault cur ent te ts

1 1 Purpos of e ts

Th prin ip l o je tiv s of th fa lt c r e t te ts are to d mo strate pro er d sig of th v lv

to with ta d th ma imum c re t, v lta e a d temp rature stre s s arisin from s ort circ it

b) s rvivin , to circ it bre k r trip, a multiple-lo p fa lt c re t, u d r c n itio s simiar to th

o e-lo p te t, b t with n re-a ple forward v lta e This te t c v rs th – n rmaly rare –

c s wh re p a e s if ts or tra sie ts in th AC s stem pre e t th c n itio s n e e f or

For th o e-lo p f ault c r e t te t, th prin ip l re uireme t is to re ro u e th worst

c mbin tio of f orward v lta e a d th ristor ju ctio temp rature at th time of th cre t of th

f irst p sitiv h lf c cle of re-a ple v lta e f olowin o e lo p of fa lt c r e t

For th multiple-lo p fa lt c r e t te t, th prin ip l re uireme t is to re ro u e th worst

f olowin th p n ltimate lo p of a multiple-lo p f ault c re t

A s c n re uireme t of th o e-lo p fa lt c r e t te t is to d mo strate th t th th ristors

h v a e u te turn-off time to b a le to with ta d th re-a pl c tio of f orward v lta e at th

p sitiv -g in v lta e z ro cro sin imme iately f olowin th f ault c re t Th time interv l

b twe n c r e t z ro a d p sitiv -g in v lta e z ro cro sin is d p n e t o th d mpin

f actor of th te t circ it a d o th te t s p ly f re u n y Th s s o ld eith r b ma e e u l

to th s rvic v lu s or a ju te s a to pro u e a re re e tativ v lu for th h ld-of f

interv l Wh re this is n t p s ible, th s p ler s al d mo strate b oth r me n , th t th

turn-of f time of th th ristors, afer o e lo p of fa lt c r e t, is a e u tely s ort

In ord r to re ro u e th c r e t tra sie t re ers v lta e d rin th multiple-lo p f ault

c re t te t, it is imp rta t th t th total stra c p cita c a s ciate with th v lv a d

in u ta c s c ntrib tin to th c mmutatin re cta c b pro erly re re e te in th circ it It

is imp rta t th t th eff ectiv p ralel imp d n e of th oth r v lv s of a six-p ls brid e is

pro erly re re e te , ta in into a c u t th lo atio of th pre ume s ort circ it a d th

s bje te to a y re o ery v lta e af ter th fin l lo p of fa lt c r e t

Wh n te tin with v lv s ctio s, th te t v lta e a d te t circ it c mp n nt v lu s s al b

s ale a c rdin to th n mb r of s rie -c n e te th ristor le els u d r te t a d s rib d

in 9.3

NOT Th f ault c re t tests sp cif i d in 1 3.2 a d 1 3.3 are b se o th n rmal worst c se c n itio of th

ma imum v lu of f ault c re t arisin f rom a sh rt circ it a ros a re tif i r v lv If th worst c mbin tio of

v lta e a d ju ctio temp rature for th th ristors d es n t c in id with th ma imum fa lt c re t arisin f rom a

sh rt circ it a ros a re tif i r v lv ,th n th test c n itio s are a juste a c rdin ly

1 3.2 One-lo p f ault c r ent te t with re-ap l ed f orward v ltage

c ntin o s o eratin th ristor ju ctio temp rature

is th ma imum ste d -state n -lo d p a e-o-p a e v lta e o th v lv sid of th

tra sformer;

– th ma imum a.c s stem s ort circ it f ault le el;

– th minimum ste d -state a.c s stem f re u n y c n iste t with th a o e;

– th minimum tolera c v lu of th c n erter tra sformer re cta c refer e to th v lv

sid ;

– th mo t critic l of th fol owin c mbin tio s:

• th lowe t d la a gle at fa lt initiatio c re p n in to th ma imum ste d -state

s al b c n iste t with th a.c s stem c n itio s u e f or c lc latin th f ault

c re t Th d.c lo d reje te s al b th t p rtio of th rate d.c p wer of th c n erter

statio whic is lo t d e to th fa lt

If th p rameters of th te t circ it pre e t th s e ifie fa lt c r e t ampl tu e a d c n u tio

d ratio from b in a hie e , th n a c re t wa e h p of e uiv le t s v rity ma b u e It

s al b d mo strate th t th e uiv le t wa e h p re ults in a th ristor ju ctio temp rature,

at th time of p a v lta e stre s, whic is at le st a gre t a th t whic wo ld h v o c r e

with th c r e t c re t wa e h p

1 3.3 Multiple-lo p fault c r ent te t with ut re-appl ed f orward v ltage

c ntin o s o eratin th ristor ju ctio temp rature

Su je t th v lv or v lv s ctio s to o e a plc tio of th s e if i d n mb r of lo p of fa lt

c re t of th s e ifie p a v lu a d c n u tio d ratio Th v lv or v lv s ctio s s al

b s bje te to re ers v lta e b twe n th lo p of fa lt c r e t, b t s al b pre e te from

e p rie cin f orward blo kin v lta e b c ntin o sly trig erin th th ristors

Th pro p ctiv v lu of re ers re o ery v lta e at c r e t z ro of th p n ltimate fa lt

is th ma imum ste d -state n -lo d p a e-o-p a e v lta e o th v lv sid of th

tra sformer;

ψ is th fra tio , in d gre s, of o e c cle of th s rvic wa ef orm, b whic c r e t z ro

of th p n ltimate fa lt c r e t lo p pre e e p sitiv -g in v lta e z ro cro sin ;

Th n mb r of f ault c r e t lo p s al b d termin d f rom th o eratin time of th primary

circ it bre k r u e for termin tin s ortcirc it c r e ts in th c n erter Th o eratin time

s al in lu e th fa lt d te tio a d sig al n d la s a wel a th bre k r cle rin time

Th prin ip l o je tiv is to d mo strate th in e sitivity of th v lv to ele troma n tic

interf ere c (ele troma n tic disturb n e) arisin f rom v lta e a d c r e t tra sie ts

g n rate within th v lv a d imp s d o it f rom th o tsid Th s n itiv eleme ts of th

v lv are g n raly ele tro ic circ its u e for trig erin , prote tio a d mo itorin of th

th ristor le els

Ge eraly, th v lv in e sitivity to ele troma n tic disturb n e c n b c e k d b mo itorin

th v lv d rin oth r ty e te ts Of th s , th v lv imp ls te ts (8.3.3 to 8.3.5) a d th

v lv n n-p rio ic firin te t (8.4) are th mo t imp rta t b c u e th e e ts re ro u e b

n rmaly c u e th c n erter statio to b trip e

Th te ts s o ld d mo strate th t:

a) o t of s q e c or s urio s trig erin of th ristors d e n t o c r;

b) th ele tro ic prote tio circ its in tale in th v lv o erate a inte d d;

c) fals in ic tio of th ristor le el f aults or er o e u sig als s nt to th c n erter c ntrol

a d prote tio s stems b th v lv b s ele tro ic , arisin from re eipt of f als d ta

from th v lv mo itorin circ its, d e n t o c r

For this sta d rd, te ts to d mo strate v lv in e sitivity to ele troma n tic disturb n e a ply

o ly to th th ristor v lv a d th t p rt of th sig al tra smis io s stem th t c n e ts th

v lv to e rth Demo stratio of th in e sitivity to ele troma n tic disturb n e of e uipme t

lo ate at e rth p te tial, a d c ara teriz tio of th v lv a a s urc of ele troma n tic

disturb n e f or oth r e uipme t, are n t within th s o e of this sta d rd

12.2 Te t o ject

Ge eraly, th te t o je t is th v lv or v lv s ctio s a u e for oth r te ts

Wh n in e sitivity to ele troma n tic disturb n e arisin from c u ln b twe n a ja e t

v lv s in a MVU is to b d mo strate , two a pro c e are a c pta le a d fin d in 12.3 In

this c s , th te t o je t wi b a s p rate v lv or v lv s ctio a c rdin to th a pro c

a o te

12.3 Te t req irements

12.3.1 General

Wh n d mo stratin in e sitivity to ele troma n tic disturb n e arisin f rom c u ln b twe n

a ja e t v lv s of a MVU, th te t re uireme ts d p n o whic of th two re omme d d

Ap ro c two is to d termin th inte sity of ele troma n tic f i ld u d r worst o eratio al

c n itio s, eith r f rom th oretic l c n id ratio s or b me s reme ts In a s c n ste , th s

f i ld are simulate b a te t circ it whic g n rate c r e t (or wors ) ele troma n tic

ra iatio at th re p ctiv fre u n ie A v lv s ctio is th n e p s d to th field g n rate

b th te t s urc

An e s ntial prere uisite to a pro c two is th d termin tio of th d n mic field stre gth a d

dire tio at k y lo atio s in th v lv This c n g n raly b o tain d f rom s arc c i

me s reme ts ta e d rin firin te ts o a sin le v lv Altern tiv ly, th f i ld c n b

pre icte f rom thre -dime sio al field mo el n pro rams A v lv s ctio s al th n b te te

u in a s p rate field c i to pro u e f i ld inte sity, fre u n y c nte t a d dire tio whic is at

le st a s v re a th pre icte v lu s

Th fol owin c n itio s f or th v lv s ctio u d r te t s al b met:

– th v lv s ctio s al h v o eratio al v lta e (pro ortio al y s ale ) b twe n its

termin ls a d b forward bia e at th time of e ergiz tio of th field c i;

– th ele tro ic of th v lv s ctio u d r te t s al b e ergiz d;

– th s p rts of th v lv b s ele tro ic th t are n c s ary for th pro er e c a g of

inf ormatio with th v lv s ctio s al b in lu e

12.3.4 A cceptan e criteria

Th criteria f or a c pta c f or b th a pro c e o e a d two s al b a d fin d in 12.1

13 Te ting of spe ial f eatures and f ault toleranc

13.1 Purpos of e ts

13.1.1 General

Th s te ts are inte d d to v rify th d sig a d p rf orma c of a y s e ial fe ture of th

v lv Sp cial f eature ma in lu e, b t are n t lmite to, th s in th f olowin two c te orie

13.1.2 Circ its to f aci tate the pro er c ntrol protectio and monitoring of the valve

Ge eraly, th s f eature c n b d mo strate a p rt of th oth r te ts

13.1.3 Fe ture in lu ed in the valve to provide f ault toleran e

Fa lt tolera c c p bi ty ma b d f i e a th a i ty of a HVDC th ristor v lv to p rform

its inte d d fu ctio , u ti a s h d le s utd wn, with fa lte c mp n nts or s b y tems or

o erlo d d c mp n nts, a d n t le d to a y u a c pta le faiure of oth r c mp n nts, or

e te sio of th d ma e d e to th fa lte c n itio Sp cial f eature ma b re uire in th

d sig to e s re f ault tolera c Ex mple of fa lts for whic fa lt tolera c ma b re uire

in lu e, b t are n t lmite to, th s giv n b low

a) Sh rt circ it of a th ristor

Ev n th u h a s ort circ ite th ristor wi s u t th oth r c mp n nts at th th ristor le el,

in s me d sig s th re ma b a d n er of o erlo din g te p ls tra sformers, o erlo din

of c re t c n e tio s (wh re p ral el th ristors are u e ), or c a gin th clampin lo d

b) Co tin o s o eratio of prote tiv f irin at o e th ristor le el d e to lo s of n rmal f irin

p ls s to th t le el

Co tin o s o eratio of prote tiv firin c n le d to o erlo d of th d mpin re istor a d

oth r c mp n nts at th aff ecte le el

c) In ulatio faiure of a p ls tra sf ormer (if fe din two or more s rie -c n e te th ristors),

d mpin c p citor, d mpin re istor or gra in c p citor

In ulatio f aiure of a y c mp n nt in p ralel with th th ristors c n atra t lo d c re t

Th p rc a er s al re iew th d sig of fere with th s p l er to d termin th pro a i ty a d

lk ly c n e u n e of c rtain f aiure Wh re a pro riate, c n id ratio s al b giv n, in th

ty e te t pro ramme, to th p rf orma c of s e ial te ts to v rif y critic l a p cts of th f ault

or a xi ary circ its for th ir prote tio , c ntrol a d mo itorin It d e n t c v r te ts o

in ivid al c mp n nts th t are u e within th v lv , th v lv s p ort, or v lv stru ture

Pro u tio te ts ma in lu e ro tin te ts a wel a s mple te ts In this cla s , o ly ro tin

te t o je tiv s are giv n

NOT In some c ses it c uld b n c s ary to p rorm sample tests o c mplete as embles in a ditio to th

ro tin tests, f or e ample wh n mo if i atio s are intro u e in th c urse of pro u tio to v rif y th t th v lv

maintains its p rorma c with ut d viatio fom its origin l ty e teste d sig Th pro ramme of sample tests is

a re d b twe n th p rc aser a d su pler

Uniformity in th s e ifie pro u tio te ts of diff ere t s p lers is u n c s ary Th

pro u tio te ts s al ta e into a c u t th s e ial d sig c ara teristic of th v lv a d its

p rtic lar ma ufa turin pro e ure a d te h iq e in olv d In al c s s, th s p l er s al

s bmit, for a pro al b th p rc a er, a d taie d s riptio of th te t pro e ure pro o e to

me t th pro u tio te t o je tiv s

Th minimum re uireme ts for ro tin te ts are lste in 14.5 Th ord r in whic th te ts are

lste imple n ith r ra kin of imp rta c n r th ord r in whic th te ts s o ld b

p rf orme

14.5 Ro tine te t – minimum req irements

14.5.1 Visual inspectio

To c e k th t al materials a d c mp n nts are u d ma e a d are c re tly in tale in

a c rd n e with th late t a pro e re isio of th pro u tio d c me tatio