Iec pas 63108 2017

IEC PAS 631 08 Edition 1 0 201 7 05 PUBLICLY AVAILABLE SPECIFICATION PRE STANDARD Electrical installations in ships – Primary DC distribution – System design architecture IE C P A S 6 3 1 0 8 2 0 1 7[.]

Elect rical inst al at ions in ships – Primary DC dist ribut ion – Syst em design

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Elect rical inst al at ions in ships – Primary DC dist ribut ion – Syst em design

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FOREWORD 4

INTRODUCTION 6

1 Sco e 7

2 Normative ref eren es 7

3 Terms an def i ition 8

4 General req irements 8

4.1 General 8

4.2 Ac e tan e of s bstitutes or alternatives 9

4.3 Provision f or maximum lo d 9

4.4 Ad ition an alteration 9

4.5 En ironmental con ition 9

4.6 Power s p ly s stem c aracteristic 9

4.6.1 General 9

4.6.2 DC distribution s stems l mits 9

4 7 Mec anical protection

9 4.8 En los res 9

5 Sy tem desig 10 5.1 General 10 5 2 Power q al ty 1

0 5.3 Combined AC an DC distribution s stems 10 5.4 Blac -out start up an start f rom de d s ip con ition 10 5.5 DC distribution s stems 10 5.6 AC distribution s stems 10 5.7 Shore p wered c argin s stems 10 5.8 Short-circ it c r ents in combined AC an DC s stems 1

5.8.1 General 1

5.8.2 Short-circ it c r ent in DC s stems 1

5.9 Sy tem stu ies an calc lation 1

5.10 Protection 1

5.10.1 General 1

5.10.2 Fixed an varia le sp ed AC generator protection 12

5.10.3 Bat ery circ its 12

5.10.4 Saf ety b r iers for energ storage s stems 12

5.10.5 Protection again t electric s oc 13

5.1 Protection of intercon ection to s ore 13

6 Sources of electrical p wer 13

6.1 General 13

6.2 AC p wer generation with varia le sp ed 13

6.3 DC p wer generation with varia le sp ed 14

6.4 Variou DC p wer sources 14

6.5 L ad s arin 14

6.6 Tran ient o eration 14

7 Power distribution s stems 14

7.1 General 14

7.2 AC distribution s stems 14

7.4 DC distribution s stems fe din AC distribution s stems 15

9.2 Control arc itecture 17

9.3 Automatic control of ves el energ s stems 17

9.3.1 General 17

9.3.2 Initiation of start-comman s 18

9.3.3 Tran fer of start-comman 18

9.3.4 Events an in ication 18

9.3.5 Automatic recon ection to de d DC distribution s stem 18

9.3.6 Automatic lo d s arin 18

10 In talation 18

1 Testin , verification an doc mentation 19

1 1 General req irements 19

1 2 F ctory ac e tan e test 19

1 3 On-b ard testin (site testin ) 19

1 4 Doc mentation 19

Biblogra h 2

INTERNATIONAL ELECTROTECHNICAL COMMISSION

_

Primary DC distribution – System design architecture

1 Th Intern tio al Ele trote h ic l Commis io (IEC) is a worldwid org niz tio for sta d rdiz tio 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 e tio s c n ernin sta d rdiz tio in th ele tric l a d ele tro ic f i ld To

this e d a d in a ditio to oth r a tivitie , IEC p bls e Intern tio al Sta d rd , Te h ic l Sp cif i atio s,

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

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

in th s bje 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 niz tio s laisin with th IEC als p rticip te in this pre aratio IEC c la orate clo ely

with th Intern tio al Org niz tio f or Sta d rdiz tio (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 niz tio s

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

c n e s s of o inio o th rele a t s bje ts sin e e c te h ic l c mmite h s re re e tatio fom al

intere te IEC Natio al Commite s

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misinterpretatio b a y e d u er

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

th later

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s rvic s c rie o t b in e e d nt c rtific tio b die

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e p n e arisin o t of th p blc tio , u e of, 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 refere c s cite in this p blc tio Us of th refere c d p blc tio s is

in is e s ble for th c r e t a plc tio of this p blc tio

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

p te t rig ts IEC s al n t b h ld re p n ible f or id ntif yin a y or al s c p te t rig ts

A PAS is a tec nical specification not fulfi in the req irements for a stan ard, but made

This PAS s al remain val d for an initial maximum p riod of 3 ye rs startin f om the

publ cation date The val dity may b exten ed f or a sin le p riod up to a maximum of

3 ye rs, at the en of whic it s al b publs ed as another typ of normative doc ment, or

s al b with rawn

The majority of existin distribution s stems of s ips are AC s stems with electric p wer

generated by fixed sp ed generator sets an a fixed feq en y an voltage for the distribution

s stem This is also ref lected by the c r ent p rts of the IEC 6 0 2 series The s ip owners

are f acin new en ironmental reg lation an are as in for more flexible solution to me t

the new market deman s It is ac nowled ed that the maritime in u try is develo in new

in ovative p wer an distribution solution ena l n red ced emis ion to air, as wel as

red ced f uel con umption Next generation of distribution s stems in olves u e of a variety of

p wer sources an DC distribution arc itecture Novel con e ts for desig an o eration of

electrical s stems with energy storage an ad an ed control of main an emergen y p wer

sources, in lu in es ential lo d services s c as pro ulsion s stems have evolved These

energy s stems combine a wide ran e of tec nologies that wi improve the fuel an emis ion

profi es an p r orman e of s ip o eration

The primary DC distribution s stem exploit new an radical a pro c es for s stem

desig /config ration, o eration an control comp red to con entional solution for power

generation an distribution s stems

This PAS inten s to des rib these solution A new IEC International Stan ard is s hed led

to re lace this PAS

The main intention with this PAS is to set desig an test criteria to p wer s stems with

primary DC distribution Semicon u tor devices u ed as bre ker s al fulf il req irements for

breakin c r ent an isolation ac ordin to IEC 6 9 7-2 an IEC 6 9 7-3

ELECTRICAL INSTALLA TIONS IN SHIPS –

Primary DC distribution – System design architecture

This PAS sp cifies the req irements of primary DC distribution s stems an intercon ected

in tal ation

The req irements of this PAS esta l s general prin iples for

• o eration , without degradin u it an h man saf ety, ca a le of a red ced en ironmental

fo tprint,

• existin an new p wer generatin u its, new DC distribution con e ts for electrical

p wer, energ storage an ad an ed control of a total p wer b lan e, in lu in

semicon u tor con erters (AC to DC, DC to DC an DC to AC p wer con erters) an

d namic lo d control ers, an

• relevant s stem stu ies an calc lation demon tratin a protection phi oso h as needed

for neces ary selectivity, segregation method an eq ipment

This PAS also gives g idel nes for integration of energy sources of dif ferent nature an

s ita le way to identify location of s c in talation

The f ol owin doc ments are ref er ed to in the text in s c a way that some or al of their

content con titutes req irements of this doc ment For dated referen es, only the edition

cited a ples For u dated referen es, the latest edition of the ref eren ed doc ment (in lu in

an amen ments) a pl es

IEC 6 0 4 (al p rts), Rotatin electrical mac ines

IEC 6 0 2 (al p rts), El ectric l inst al lations in ships

IEC 6 0 2-101:19 4, Electric l inst all ations in ships – P art 101: Definit ions a d g n ral

IEC 6 5 3, Electric l a d el ectro ic instal l ations in ships – El ectroma n t ic c mp tibil ity

(EMC) – Ships wit h a metal l ic h l l

IEC 6 9 7-2, L w-v ltag switc g ar a d c ntrol ge r – P art 2: Circ it-bre k rs

IEC 6 9 7-3, L w-v lt ag switc g ar a d c ntrolg ar – Part 3: Switc es, disc n e tors,

switc -d isc n e t ors a d fuse-c mbinat ion u its

IEC 615 7-8, Electric l safety in l ow v ltag d istributio syst ems u to 1 0 0 V a.c a d 1 50

V d.c – Equipme t for testin , me suring or mo itoring of prote t iv me sures – Part 8:

I nsulatio mo itorin d evic s for I T systems

3 Terms and def initions

For the purp ses of this doc ment, the f ol owin terms an def i ition a ply

ISO an IEC maintain terminological data ases for u e in stan ardization at the f ol owin

ad res es:

• IEC Electro edia: avai a le at ht p:/ www.electro edia.org/

• ISO Onl ne browsin platform: avai a le at htp:/ www.iso.org/o p

NOT Oth r rele a t terms a d d f i itio s c n b fo n in IEC 6 0 2- 01 a d oth r p rts of th

s stem protectin b t ery, control n b t ery c argin an /or dis hargin , an monitorin

b tery con ition (i.e state of c arge, cel temp rature etc.)

Note 1 to e try: Th d finitio is u d r c n id ratio

Atention is drawn to the req irements of the International Con ention for the Safety of Life at

Se Clau e 4 contain con ition an req irements whic are common to al a p ratu an

Semicon u tor devices u ed as bre ker s al fulfi req irements f or bre kin c r ent an

isolation ac ordin to IEC 6 9 7-2 an IEC 6 9 7-3

4.2 Ac epta c of s bstitute or alternativ s

Where in this PAS an sp cial typ of a p ratu , con tru tion or ar an ement is sp cified,

the u e of an other a p ratu , con tru tion or ar an ement is admis ible, provided it fulf ils

the req irements of the original a p ratu

4.3 Provision f or ma imum loa

Al comp nents an s stems s al b of s c size as to b ca a le of car yin , without their

resp ctive ratin s b in ex e ded, the c r ent whic can normal y flow throu h them They

s al b ca a le of car yin anticip ted overlo d an tran ient c r ents, f or example the

ca acitor inru h c r ents, without o erational degradation

4.4 Addition a d alterations

An ad ition or alteration, temp rary or p rmanent, s al not b made to an existin in tal ation

u ti it has b en definitely as ertained that the ratin s an the con ition of existin

ac es ories, con u tors, switc ge r, etc af fected are adeq ate f or the new situation

Sp cial at ention is taken to those factors af fectin the existin s stem desig s c as

c r ent-car yin ca acity, maximum f ault c r ent level, harmonic content, p wer q al ty an

pro er dis rimination of the protective devices

4.5 Environme tal condition

Electrical eq ipment s al o erate satisf actori y u der variou en ironmental con ition The

en ironmental con ition of IEC 6 0 2 (al p rts) s al a ply

4.6 Power s pply s stem c ara teristic

NOT Th u e of primary DC distrib tio are c ara teriz d b

• D -grid in lu in v rio s s urc s of p wer a d c n umers with p wer ele tro ic c ntrolers f ormin

o eratio al intera e , with hig d n mic ,

• f ast re p n e time a d smal re ctio time a d in u ta c s in D -grid s stems c mp re to c n e tio al

A -grid s stems, a d

• v lta e s urc d c n erters, dio e brid e , etc whic wi cre te s e ial fa lt mitig tio s e ario b th ir

a i ty to blo k in o e dire tio , a d le d inth o p site dire tio

4.6.2 DC distribution s stems l mits

When b t eries are u ed as p wer s p ly s stems, adeq ate me s res s ould b taken to

ke p the voltage within the sp cified lmits d rin c argin , q ic c argin , gas-c argin an

5 System design

The desig of the electrical s stem s al b in ac ordan e with relevant p rts of the

IEC 6 0 2 (series) an IEC 6 5 3, with the ad itional req irements of this PAS

5.2 Power qual ty

Harmonic voltage distortion levels in AC p rts of s ip s stems s al b in l ne with

req irements in IEC 6 0 2 (al p rts) For DC s stems the f req en y ampl tu es an voltage

pulses d e to switc in of semicon u tor devices wi vary de en in on the lo d con ition

an voltage con ition Al con ected devices to the DC bu -b r s al b a le to o erate

normal y u der an o eratin con ition with the actual voltage an c r ent ampl tu es an

IEC 6 0 2-101:19 4/IEC 6 0 2-101:19 4/AMD1:19 5

5.3 Combine AC a d DC distribution s stems

Combination of AC an DC distribution s stems s al b co rdinated in s c way that safe

o eration can b doc mented for al normal an fault con ition Paralel o eration of s c

s stems s al b doc mented an verified b sed on testin

5.4 Bla k-out start up a d start from de d s ip condition

An s stem config ration can b reconfig red, even u der de d s ip con ition , to a

config ration fom whic it s al b p s ible to start f rom a de d s ip or f rom a blac -out

situation

5.5 DC distribution s stems

Sy tem e rth s al b of one of the f ol owin alternatives:

• two-wire in ulated;

• two-wire with one p le e rthed in galvanic se arated DC bu section ;

• thre -wire with mid le wire e rthed for sp cial s stems

Batery s stems s al b in ulated f rom the s ip stru ture to avoid damagin voltage pulses

b twe n c as is an b t ery cel s

For a DC source of p wer that req ires direct or hig imp dan e e rthin , neces ary

ar an ements s al b implemented an ac e ted by relevant authorities

5.6 AC distribution s stems

AC distribution s stems interf acin DC arc itecture s al comply with IEC 6 0 2-101

5.7 Shore powere c arging sy tems

If s ore intercon ection is to b u ed for c argin of b t eries, in e en ent control of the

s ore intercon ection c r ent s al b provided in ad ition to control by the b t ery

management s stem

The overal c argin s stem s al b desig ed an verif ied f or e c typ of a plcation b sed

on the nature of the p wer deman an its d ration Chargin s stem con ection may b

automatic, f or example d e to l mited time avaia le for c argin

A safety analy is s al b made in lu in al phases of the o eration of the p wer tran f er