Iec 62909 1 2017

interf ace b twe n the DC/DC con erter an distributed energ resources or, in the case where the DC-con ection interf ace is directly con ected to distributed energ resources without DC/D

Bi- direct ional grid- connect ed power convert ers –

Part 1: General requirement s

Convert isseurs de puissance connect és aux réseaux bidirect ionnels –

Part ie 1: Exigences générales

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Bi- direct ional grid- connect ed power convert ers –

Part 1: General requirement s

Convert isseurs de puissance connect és aux rés aux bidirect ionnels –

Part ie 1: Ex igences générales

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FOREWORD 5

INTRODUCTION 7

1 Sco e 8

2 Normative ref eren es 8

3 Terms an def i ition 9

4 GCPC general sp cif i ation 16 4.1 General 16 4.2 Des ription of GCPC an its comp nents 16 4.3 Op ratin modes 17 4.4 Interaces with distributed energ resources 2

5 Perorman e req irements 2

5.1 DC-con ection interace 2

5.1.1 General 2

5.1.2 Ca acitor dis harge 2

5.2 Con erter 2

5.2.1 General 2

5.2.2 DC/DC con erter 2

5.2.3 Bi-directional in erter 2

5 3 Grid interf ace 2

5.3.1 General 2

5.3.2 AC output to the grid 2

5.3.3 Input f rom the grid – Harmonic c r ents 2

5.4 AC output to the lo d u der grid-in e en ent o eration 2

5.4.1 Con ition for the GCPC to s p ly a lo d 2

5.4.2 Characteristic to b declared by the man facturer 2

6 Hazard protection req irements 2

6.1 General 2

6.2 F ult an a normal con ition 2

6.3 Short-circ it an overlo d protection 2

6.3.1 General 2

6.3.2 Sp cification of input s ort-circ it with tan stren th an output s ort-circ it c r ent a i ty 2

6.3.3 Short-circ it co rdination (b c up protection) 2

6.3.4 Protection by several devices 2

6.4 Protection again t electric s oc 2

6.4.1 General 2

6.4.2 Decisive voltage clas 2

6.4.3 Provision f or b sic protection 2

6.4.4 Provision f or f ault protection 2

6.4.5 En an ed protection 2

6.4.6 Protective me s res 2

6.4.7 In ulation 2

6.4.8 Comp tibi ty with resid al c r ent-o erated protective devices (RCD) 31

6.5 Protection again t electrical energy hazard 31

6.5.1 Op rator ac es are s 31

6.5.2 Service ac es are s 31

6.6 Protection again t fire an thermal hazard 31

6.6.1 Circ its re resentin a f ire hazard 31

6.6.2 Comp nents re resentin a fire hazard 31

6.6.3 Fire en los res 3

6.6.4 Temp rature l mits 3

6.6.5 Limited p wer sources 3

6.7 Protection again t mec anical hazard 3

6.7.1 General 3

6.7.2 Liq id co led GCPC 3

6.8 Eq ipment with multiple sources of s p ly 3

6.9 Protection again t en ironmental stres es 3

6.10 Protection again t sonic pres ure hazard 3

6.10.1 General 3

6.10.2 Sonic pres ure an sou d level 3

6.1 Wirin an con ection 3

6.1 1 General 3

6.1 2 Routin 3

6.1 3 Colour codin 3

6.1 4 Spl ces an connection 3

6.1 5 Ac es ible con ection 3

6.1 6 Intercon ection b twe n p rts of the GCPC 3

6.1 7 Sup ly con ection 3

6.1 8 Terminals 3

6.12 En los res 3

6.12.1 General 3

6.12.2 Han les an man al controls 3

6.12.3 Cast metal 3

6.12.4 She t metal 3

6.12.5 Sta i ty test for en los re 3

7 Test req irements 3

7.1 General 3

7.1.1 Test o jectives an clas ification 3

7.1.2 Selection of test samples 3

7.1.3 Seq en e of tests 3

7.1.4 Earthin con ition 3

7.1.5 General con ition for tests 3

7.1.6 Compl an e 3

7.1.7 Test overview 3

7.2 Test sp cification 3

7.2.1 Vis al in p ction ( yp test, sample test an routine test 3

7.2.2 Mec anical tests 3

7.2.3 Electrical tests 3

7.2.4 Abnormal o eration an simulated f aults tests 3

7.2.5 Material tests 4

7.2.6 En ironmental tests ( yp tests) 4

7.2.7 Hy rostatic pres ure test ( yp test an routine test 41

8 Inf ormation an markin req irements 41

8.1 General 41

8.3 Inf ormation for in tal ation an commis ionin 41

8.3.1 General 41

8.3.2 Mec anical con ideration 41

8.3.3 En ironment 41

8.3.4 Han l n an mou tin 41

8.3.5 En los re temp rature 41

8.3.6 Con ection 41

8.3.7 Protection req irements 4

8.3.8 Commis ionin 4

8.4 Inf ormation for u e 4

8.4.1 General 4

8.4.2 Adju tment 4

8.4.3 L bels, sig s an sig als 4

8.5 Inf ormation for maintenan e 4

8.5.1 General 4

8.5.2 Ca acitor dis harge 4

8.5.3 Auto restartbyp s con ection 4

8.5.4 Other hazard 4

8.5.5 Eq ipment with multiple sources of s p ly 4

Biblogra h 4

Fig re 1 – Example of GCPC stru ture 17 Fig re 2 – Power flow of mode I 18 Fig re 3 – Power flow of mode I 19 Fig re 4 – Power flow of mode I 19 Fig re 5 – Power flow of mode IV 2

Fig re 6 – Examples of DC-con ection inter ace voltage range 21

Ta le 1 – Alpha etical l st of terms 9

INTERNATIONAL ELECTROTECHNICAL COMMISSION

_

Part 1: General requirements

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

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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 cific tio s,

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Pu lc tio s

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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

International Stan ard IEC 6 9 9-1 has b en pre ared by s bcommite 2 E: Sta i zed

p wer s p l es, of IEC tec nical commite 2 : Power electronic s stems an eq ipment

The text of this International Stan ard is b sed on the fol owin doc ments:

Ful inf ormation on the votin for the a proval of this International Stan ard can b f ou d in

the re ort on votin in icated in the a ove ta le

This doc ment has b en draf ted in ac ordan e with the ISO/IEC Directives, Part 2

This publ cation is to b re d in conju ction with IEC 6 4 7-1:2 12 It fol ows the stru ture of

IEC 6 4 7-1:2 12 an s p lements or modifies its cor esp n in clau es Wherever the term

"PECS" a p ars in the cited clau es, it ne d to b re laced by "GCPC"

A l st of al p rts in the IEC 6 9 9 series, publ s ed u der the general title Bi-d ire t io al grid

c n e t ed p wer c n ert ers, can b fou d on the IEC we site

The commite has decided that the contents of this doc ment wi remain u c an ed u ti the

sta i ty date in icated on the IEC we site u der "htp:/ we store.iec.c " in the data related to

IMPORTANT – The 'colour inside' logo on the cov r pa e of this publ c tion indic te

that it contains colours whic are consid re to be us f ul f or the cor e t

und rsta din of its conte ts Us rs s ould th ref ore print this doc me t using a

colour printer

The solution to glo al warmin an fos i fuel de letion req ires an exp n ion of renewa le

energ an the spre d of distributed energ resources, with the new inf astru ture containin

micro-grid an smal er s ale nano-grid Nano-grid s stems are esp cial y s ited to

in re sin energ -u age eff i ien y an red cin p wer con umption of homes by combinin

an o timal y control n energ storage with generators

In order to o timize the p wer con umption within the nano-grid of a home, it is neces ary to

s p ly the electricity its residents req ire by combinin an o timizin an electricity generator

with rec arge ble energ storage In e en ent generators an b t ery storage u its are

alre dy on the market; but, f or s c new s stems, develo ment has ju t started Althou h

p wer generation sources an storage b t eries are general y exp n ive, the ten en y of that

is sti more remarka le in the e rly stage in whic a market is formed F r sta le growth of a

market, exten ibi ty, comp tibi ty, an ro u tnes of s c s stem are esp cial y imp rtant If

a con ectin interace is stan ardized an comp tibi ty is in ured, man prod cts can b put

onto the market an their prices can b ke t at a pro er level If a new stan ard is uti zed f or

prod ct certif i ation, their bro d ac e tan e can b e rl er an gre ter From the a ove

viewp int, it is neces ary to promptly ad an e stan ardization of bi-directional grid-con ected

p wer con erter (GCPC) whic combined the source of p wer generation an the storage

b tery This p rt of IEC 6 9 9 provides common general req irements in e en ent of

sp cial c aracteristic of in ivid al a pl cation

BI-DIRECTIONA L GRID-CONNECTED POWER CONVERTERS –

Part 1: General requirements

This p rt of IEC 6 9 9 sp cifies general asp cts of bi-directional grid-con ected p wer

con erters (GCPC), consistin of a grid-side in erter with two or more typ s of DC-p rt

interaces on the a pl cation side with s stem voltages not ex e din 1 0 0 V AC or

1 5 0 V DC In sp cial cases, a GCPC wi have only one DC-p rt interf ace, whic is

con ected to a bidirectional energ -storage device This doc ment in lu es terminology,

sp cification , p r orman e, safety, s stem arc itecture, an test-case definition The

"s stem arc itecture" def i es interaction b twe n the in erter an con erters Req irements

whic are common, general, an in e en ent of sp cial c aracteristic of in ivid al

generators an bi-directional storages are defined

This doc ment do s not cover u inter uptible p wer s p ly (UPS) s stems, whic f al u der

the s o e of IEC 6 0 0 (al p rts) Req irements f or internal an external digital

commu ication mig t b neces ary; the inter ace req irements in lu in commu ication with

distributed energ resources are provided in a future p rt of IEC 6 9 9 Al EMC req irements

are defined by referen e to existin IEC stan ard External commu ication req irements are

out of s o e of this doc ment

NOT Th c ntrol sig al fom th grid is n t d f i e in this d c me t

The fol 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 ref eren es, the latest edition of the ref eren ed doc ment (in lu in

an amen ments) a pl es

IEC 6 0 8:2 0 , IEC st and ard voltag s

IEC 6 14 -2:19 9, Semico d uctor c n erters – P art 2: Self-c mmutated semic nd uct or

c nverters in luding d ire t d.c c nvert ers

IEC 610 0-3-2:2 14, El ectroma n tic c mp tibil ity (EMC) – Part 3-2: Limits – Limits for

h rmo ic c re t emis ions (e uipme t in ut c re t ≤ 16 A p r p ase)

IEC 610 0-3-12:2 1 , Electroma n tic c mp t ibility (EMC) – Part 3-12: Limits – Limits for

h rmo ic c re ts produ ed b e uipme t c nn cted to p b c l ow-voltag systems with inp t

c re t >16 A a d ≤ 7 5 A p r p ase

IEC 617 7:2 0 , Ph tovoltaic (PV) systems – Ch ra teristics ofth util ity int era e

IEC 6 10 -1:2 10, Safety of p wer c n ert ers for use in p otov l taic p wer systems – Part 1:

Ge eral re uireme ts

IEC 6 0 0-3:2 11, U nint eru t ible p wer systems (UPS) – Part 3: Met hod ofsp cifyin th

p rorma c a d test re uireme ts

IEC 6 4 7-1:2 12, Safety re uireme ts for p wer electro ic c n erter systems a d

e uipme t – Part 1: Ge eral

IEC 6 4 7-1:2 12/AMD1:2 16

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 f or 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

Ta le 1 provides an alpha etical cros - ef eren e l stin of terms

Table 1 – Alphabetic l l st of terms

fa lt prote tio 3.14 p wer ele tro ic

c n erter

prote tiv e rthin 3.3

3.1

ba ic ins lation

in ulation a pl ed to hazardou l ve p rts to provide b sic protection again t electric s oc

[SOURCE: IEC 6 0 0-19 :19 8, 19 -0 -0 , modified – The def i ition has b en re hrased,

the expres ion "again t electric s oc " has b en ad ed an the note has b en deleted

interf ace b twe n the DC/DC con erter an distributed energ resources or, in the case

where the DC-con ection interf ace is directly con ected to distributed energ resources

without DC/DC con erter, b twe n the DC-con ection inter ace an the distributed energy

clas ification of voltage ran e u ed to determine the neces ary protective me s res f rom

electric s oc an the req irements of in ulation b twe n circ its

[SOURCE: IEC 6 4 7-1:2 12, 3.5, modified – The adjective "neces ary" has b en ad ed

DC p wer sources generatin an /or storin electricity ne r the con umin are

Note 1 to e try: Ex mple of distrib te e erg re o rc s in lu e, b t is n t lmite to, p oto oltaic c ls, f uel

c ls, win a d water p wer g n rators, primary b terie , a c mulators (e.g in ele tric l v hicle ), etc

voltage not ex e din the relevant voltage l mit of b n I sp cif ied in IEC 60 4

Note 1 to e try: In IEC 6 4 9, b n I is d f i e a n t e c e in 5 V A R S a d 12 V D Oth r pro u t

c mmite s ma h v d f i e ELV with diff ere t v lta e le els

Note 2 to e try: In this d c me t, prote tio a ain t ele tric s o k is d p n e t o D C

[SOURCE: IEC 6 0 0-8 6:2 0 , 8 6-12-3 , modified – Note 1 an Note 2 to entry have b en

ad ed

3.14

f ault prote tion

protection again t electric s oc u der sin le-ault con ition

[SOURCE: IEC 6 4 7-1:2 12, 3.16, modified – Note 1 to entry has b en deleted

in ulation b twe n con u tive p rts within a circ it that is neces ary for the pro er

f un tionin of the circ it, but whic do s not provide protection again t electric s oc

[SOURCE: IEC 6 4 7-1:2 12, 3.19, modified – Note 1 to entry has b en deleted

3.19

bi-dire tional grid-conne te power con erter

grid-conne te power conv rter

[SOURCE: IEC 6 4 7-1:2 12, 3.21, modified – "the PECS" has b en re laced by "one

GCPC" an Note 1 to entry has b en deleted

3.2

l v part

con u tor or con u tive p rt inten ed to b energized in normal o eration, in lu in a neutral

con u tor, but by con ention not a protective e rth con u tor or protective e rth neutral

con u tor

[SOURCE: IEC 6 0 0-19 :19 8, 19 -0 -19, modified – The word "a PEN con u tor or PEM

con u tor or PEL con u tor have b en re laced by "a protective e rth con u tor or

protective e rth neutral con u tor in the secon p rt of the def i ition

3.2

mains s p ly

low voltage (< 1 0 0 V) AC p wer distribution s stem for s p lyin p wer to AC eq ipment

[SOURCE: IEC 6 4 7-1:2 12, 3.2 , modified – The brac ets "(< 1 0 0 V)" have b en ad ed

s urc s n t dire tly c n e te to th A p wer distrib tio s stem.

3.3

PE con uctor

con u tor in the in tal ation wirin , or in the p wer s p ly cord, con ectin a main protective

e rthin terminal in the eq ipment to an e rth p int in the in tal ation f or safety purp ses

[SOURCE: IEC 6 47 -1:2 12, 3.41, modified – The term "buidin " has b en deleted"

3.31

PELV

electric s stem in whic the voltage can ot ex e d the value of extra low voltage:

– u der normal con ition ; an

– u der sin le fault con ition , ex e t e rth faults in other electric circ its

[SOURCE: IEC 6 0 0-8 6:2 0 , 8 6-12-3 , modif ied – The term "s stem" has b en deleted

in the defined term, as wel as the note to entry

3.3

power ele tronic conv rter

PEC

device or p rt there f f or the purp se of electronic p wer con ersion, in lu in sig al n ,

me s rement, control circ itries an other p rts, if es ential for the p wer con ersion f un tion

Note 1 to e try: In this d c me t, PEC re re e ts a “bi-dire tio al in erter” or a“D /D c n erter”

[SOURCE: IEC 6 47 -1:2 12, 3.4 , modified – Note 1 to entry has b en ad ed

3.3

power f actor

PF

ratio of the ki owat-hours (kWh) to the s uare ro t of the s m of the s uares of the ki owat

-hours an the ki ovarhours (kVARh) over a p riod of time:

REACTIV E2

REAL2

R EAL

EE

protection again t electric s oc that do s not only rely on b sic in ulation, but also in lu es

the me n for con ection of ac es ible con u tive p rts to the PE in the f i ed wirin of the

in tal ation, so that ac es ible con u tive p rts can ot b come l ve in the event of a fai ure of

the b sic in ulation

[SOURCE: IEC 6 4 7-1:2 12, 3.3 , modified – The definition has b en re hrased

prote tiv cla s I

protection again t electric s oc that do s not only rely on b sic in ulation, but also

s p lementary in ulation or reinforced in ulation, there bein no provision f or protective

e rthin or rel an e up n inac es ibi ty

[SOURCE: IEC 6 4 7-1:2 12, 3.3 , modified – The definition has b en re hrased an

"in tal ation con ition " has b en re laced by "inac es ibi ty"

3.3

prote tiv cla s I

protection again t electric s oc that rel es on s p ly at DVC Ax (or B u der certain

con ition ) an in whic voltages hig er than those of DVC Ax (B) are not generated an

there is no provision for protective e rthin

[SOURCE: IEC 6 4 7-1:2 12, 3.3 , modified – The def i ition has b en re hrased an Note 1

eq ip tential b n in f or purp ses of safety f rom electric s oc

[SOURCE: IEC 6 4 7-1:2 12, 3.3 , modified – The h phen have b en deleted f rom the

defined term an the brac ets "(e.g protection again t electric s oc )" have b en re laced by

" rom electric s oc "

3.3

prote tiv impe a c

imp dan e b twe n hazardou l ve p rts an ac es ible con u tive p rts, of s c value that

the c r ent, in normal u e an u der l kely fault con ition , is lmited to a safe value, an

whic is so con tru ted that its a i ty is maintained throu hout the l f e of the eq ipment

[SOURCE: IEC 6 4 7-1:2 12, 3.4 , modified – The adjective "con ected" has b en deleted in

the expres ion "imp dan e con ected b twe n…"

3.4

prote tiv s re ning

se aration of circ its f rom hazardou l ve-p rts by me n of an interp sed con u tive s re n,

con ected to the me n of con ection f or a PE con u tor, either directly or via protective

• reinforced in ulation

[SOURCE: IEC 6 4 7-1:2 12, 3.4 , modif ied – The word "(electrical y)" has b en deleted

f rom the defined term

3.4

reinforc d ins lation

in ulation of hazardou -l ve-p rts whic provides a degre of protection again t electric s oc

eq ivalent to double in ulation

[SOURCE: IEC 6 6 4-1:2 0 , 3.17.5, modified – The note to entry has b en deleted

3.4

routine test

test to whic e c in ivid al device is s bjected d rin or af ter man f acture to as ertain

whether it compl es with certain criteria

[SOURCE: IEC 6 0 0-41 :19 6, 41 -5 -0 , modified – The term "mac ine" has b en

re laced by the term "device"

electric s stem in whic the voltage can ot ex e d the value of extra-low voltage:

– u der normal con ition an

– u der sin le fault con ition , in lu in e rth faults in other electric circ its

[SOURCE: IEC 6 0 0-8 6:2 0 , 8 6.12.31, modified – The term "s stem" has b en deleted

in the defined term, as wel as the note to entry

maximum c r ent con umed by GCPC d rin the time interval b twe n the start of GCPC an

re c in the nominal o eration voltage ran e of the DC-con ection inter ace

3.4

s p leme tary ins lation

in e en ent in ulation a pl ed in ad ition to b sic in ulation for f ault protection

[SOURCE: IEC 6 6 4-1:2 0 , 3.17.3]

set of inter elated an /or intercon ected in e en ent elements

[SOURCE: IEC 6 4 7-1:2 12, 3.5 , modified – Note 1 to entry has b en deleted

3.5

s stem volta e

voltage u ed to determine in ulation req irements

[SOURCE: IEC 6 4 7-1:2 12, 3.5 , modified – Note 1 to entry has b en deleted

3.51

touc c r e t

electric c r ent p s in throu h a h man b d or throu h an animal b d when it tou hes one

or more ac es ible p rts of an electrical in tal ation or electrical eq ipment

voltage, at rated s p ly con ition (without toleran es) an worst case o eratin con ition ,

that oc urs by desig in a circ it or acros in ulation

[SOURCE: IEC 6 4 7-1:2 12, 3.6 , modified – Note 1 to entry has b en deleted

4 GCPC ge eral specif ic tion

The des ription of GCPC, its comp nents, o eratin modes an interf aces are provided in

Clau e 4

4.2 De cription of GCPC a d its compone ts

Des ription of GCPC s stem:

Typical y, GCPC is con ected u der the main circ it bre ker in an en -u er’s distribution

b ard, managin energ f low to an fom the grid It has two or more energ sources f or

generatin or c argin an dis hargin GCPC can decre se local p wer con umption by

o timizin the direction an amou t of p wer, or givin b c up electricity up n p wer f ai ure

of the grid

A GCPC is an eq ipment whic con ects multiple typ s of distributed energ resources to the

grid, AC lo d or b th The DC-p rt interf ace voltage s al not ex e d 1 5 0 V The grid side

inter ace voltage s al not ex e d 1 0 0 V (IEC 6 0 8:2 0 )

The GCPC con ists of the f ol owin comp nents:

a) two or more DC/DC con erters, e c con ected to a u idirectional or bidirectional

distributed energ resource In the sp cial case where GCPC provides only one DC-p rt

inter ace, the con ected resource s al b energy storage;

b) one DC-con ection interf ace whic con ects every DC/DC con erter in p ral el with the bi

-directional in erter;

c) one bi-directional in erter con ected to the grid, an AC lo d or b th;

d) control: fu ction to re l ze interaction or co p ration amon bidirectional inverter, DC/DC

con erters an /or external eq ipment;

Distributed energy resources can b con ected to DC-con ection interf ace directly In this

case, the p rt con ected to the DC-con ection interf ace is also cal ed the DC-p rt interf ace

NOT 2 Point of th c n e tio is th ref ere c p int wh re th u er’s ele tric l in talatio is c n e te to th

grid Power f l ws thro g this p int to a d fom th grid, u le s it is dis o n cte

Figure 1 – Ex mple of GCPC structure

4.3 Operatin mod s

Control sig als can select the fol owin four modes:

– mode I GCPC tran fers p wer f rom multiple distributed energ resources to the grid, AC

lo d , or b th This mode may in lu e simultane u c argin fom distributed energ

resources to other distributed energ resources (an example of mode I is s own

– mode I : GCPC tran f ers p wer f rom the grid to multiple distributed energ resources This

mode may in lu e simultane u c argin f rom distributed energ resources to other

distributed energy resources (an example of mode I is s own in Fig re 3);

– mode I I GCPC tran f ers p wer f rom distributed energ resources to other distributed

energ resources, when the bi-directional in erter is inactive (an example of mode I I is

s own in Fig re 4);

– mode IV: GCPC tran f ers power f rom multiple distributed energ resources to AC lo d

This mode may in lu e simultane u c argin f om distributed energy resources to other

distributed energ resources, when the bi-directional in erter is isolated f rom the grid (an

Fig re 5 – Power f low of mode IV

4.4 Interfa e with distribute e ergy re ourc s

Eac DC-p rt interf ace s al comply with the req irements defined f or the con ected

distributed energ resource

5.1 DC-conne tion interf ac

5.1.1 Ge eral

5.1.1.1 Definition of volta e a d volta e ra ge

The DC-con ection interf ace voltage ran e s al b as s owed in Fig re 6:

Figure 6 – Ex mple of DC-conne tion interfa e volta e ra ge

5.1.1.2 Nominal operation volta e ra ge

DC-con ection interace rated voltage an nominal o eration voltage ran e s al b sp cif ied

by the GCPC man facturer Output voltage of the p wer electronic con erters to

DC-con ection inter ace s al b within the nominal o eration voltage ran e

In case that the distributed energ resource is con ected directly to DC-con ection interf ace,

the DC-p rt inter ace con ected to DC-con ection inter ace s al b within the nominal

o eration voltage ran e

The fol owin items s al b con idered:

a) up er an lower l mits of the adju ta le voltage ran e;

b) up er an lower l mit of tran ients ran e, an voltage c an e rate (dV/dt ;

c) rip le voltage ran e (p ak-to-p ak) an f req en y;

d) tran f er factor ( he ratio of output voltage to input voltage);

e) in on enien e d e to combinin variou control (detection) ac urac an p rorman e;

f) mod lation in ex

For up er an lower lmit of tran ients ran e, IEC 6 4 7-1:2 12, A.6.4, IEC 6 10 -1:2 10,

7.3.2.6.3, an IEC 6 14 -2:19 9, 5.5.2, s al b a pl ed Also, the man facturer an in tal er

s al agre to voltage tran ients d e to hot plu

For rip le voltage ran e (p ak-to-p ak) an feq en y, IEC 6 4 7-1:2 12, A.6.3,

IEC 6 10 -1:2 10, 7.3.2.6.4, an IEC 6 14 -2:19 9, 5.5.2, s al b a pled

Nominal o eration voltage ran e s al b desig ed to prevent havin a harmful influen e on

s p ly rel a i ty of p wer s stem an electric p wer q al ty

IE C ｔ

NOT For s stem ele tric p wer q alty, s e 5.4, or refer to lo al c d s for th grid c n e tio

5.1.1.3 Al owable operation volta e ra ge

When there is deviation outside the al owa le o eration voltage ran e, GCPC s al sto its

o eration at the protection level an op ratin time sp cified by its man facturer

NOT IEC 6 14 -2:19 9 5.5.2 c n b a ple

5.1.1.4 Withsta d voltag

To prevent p s ible damage of the eq ipment or other devices con ected to the

DC-con ection interace, the with tan voltage sp cified by the man f acturer s al not b

ex e ded The device con ected to the DC-con ection interf ace s ould b desig ed so that it

wi not b damaged

In case that the distributed energ resource is con ected directly to DC-con ection interf ace,

the DC-p rt interf ace con ected to DC-con ection interf ace s al fol ow the req irement

defined in the previou p ragra h

5.1.1.5 Cur e t l mit value

Cur ent lmit value at DC-con ection inter ace for e c PEC s al b sp cified by GCPC

man facturer

In case that the distributed energ resource is con ected directly to DC-con ection inter ace,

the DC-p rt interace con ected to DC-con ection interace s al fol ow the req irement

defined in the previou p ragra h

Maximum start-up c r ent provided by e c PEC to the DC-con ection interace b fore lower

l mit of al owa le o eration voltage, U

dmin, is re c ed s al b stated cle rly

In case that the distributed energ resource is con ected directly to DC-con ection inter ace,

the DC-p rt interace con ected to DC-con ection interace s al fol ow the req irement

defined in the previou p ragraph

NOT If th start-u ma imum c re t is n t state cle rly, it is n t p s ible to d sig aGC C pro u t

5.2.1.2 Be a iour at volta e und r the lower l mit

A PEC s al not malfu ction or b damaged when s p l ed by voltages u der the lower lmit

of the al owa le o eration voltage

In case that the distributed energ resource is con ected directly to DC-con ection interf ace,

the DC-p rt interf ace con ected to DC-con ection interf ace s al fol ow the req irement

defined in the previou p ragra h

5.2.1.3 Cur e t l mit function

Eac PEC s al have a c r ent l mit fu ction whic ke ps c r ent of DC-con ection interace

In case that the distributed energ resource is con ected directly to DC-con ection inter ace,

the DC-p rt interf ace con ected to DC-con ection interf ace s al fol ow the req irement

defined in the previou p ragra h

5.2.1.4 Prote tiv f unction at DC-conne tion interfa e jun tion

The man facturer s al sp cify the maximum s ort-circ it c r ent ratin in ac ordan e with

6.3.2 at the DC-con ection interf ace for the co rdination an selection of an overc r ent

protection device The protection mec anism s al detect an fault c r ent b twe n the l nes,

or an l ne an neutral of the DC-con ection interace, an protect again t hazardou

con ition

In case that the distributed energ resource is con ected directly to DC-con ection inter ace,

the DC-p rt interf ace con ected to DC-con ection interf ace s al fol ow the req irement

defined in the previou p ragra h

Se 7.2.4.4 an 7.2.4.5 for tests

5.2.2 DC/DC con erter

5.2.2.1 Cur e t l miting during a abrupt c a ge of DC-conne tion interfa e volta e

The output c r ent of e c DC/DC con erter to DC-con ection interace s al remain within

the lmits sp cified by its man facturer d rin c an es of DC-con ection interf ace voltage,

in lu in those cau ed by s ort-circ it

In case that the distributed energ resource is con ected directly to DC-connection interace,

the output c r ent to DC-p rt interace f rom the distributed energ resource s al remain

within the lmits sp cified by its man facturer d rin c an es of DC-con ection interf ace

voltage, in lu in those cau ed by s ort-circ it

5.2.3 Bi-dire tional inv rter

5.2.3.1 Abrupt c a g of DC volta e at mode I

The bi-directional in erter s al o erate smo thly d rin an a rupt c an e of DC input voltage,

an the tran ients in its AC c r ent on the s stem side s al b within a ran e sp cified by its

man f acturer

5.2.3.2 External fa lt

The in erter s al protect again t hazardou con ition cau ed by an external f ai ure on the

grid side (AC) b twe n l nes, l ne an neutral, an l ne an e rth, in ac ordan e with 6.3

5.3.3 Input from the grid – Harmonic c r e ts

Harmonic c r ents at the grid side inter ace s al b in ac ordan e with IEC 610 0-3-2:2 14

an IEC 610 0-3-12:2 1

5.4 AC output to the loa under grid-indepe de t operation

5.4.1 Conditions for the GCPC to s p ly a loa

A GCPC conf ormin to this doc ment s al b ca a le of s p lyin an lo d (sin le or thre

phase, as a pl ca le) that is comp tible with the output c aracteristic of the GCPC as

5.4.2 Chara teristic to be de lare by the ma ufa turer

The man facturer s al declare the AC output c aracteristic of the GCPC in lu in the

v olt age wav eform c aract erist ic (voltage wave f orm S or X) an dy amic output p rorman e

clas ification u der the l ne r lo d ste a plcation an the non-l ne r lo d ste a pl cation

C is th d n mic o tp t p rorma c d s ribin th v lta e v riatio c u e b

– th ln ar lo d ste a plc tio ( st c ara ter, a d

– th n n-ln ar lo d ste a plc tio (2 d c ara ter

NOT 2 Compla c with th v lta e wa ef orm cla sif i atio a d th d n mic o tp t p rorma c d clare are

v rif i d b p rf ormin th ele tric l ty e te ts d s rib d in 6.4.2.3, 6.4.2.4, 6.4.2.1 5, 6.4.2.1 6, 6.4.3.2,

6.4.3.3.4 a d 6.4.3.3.5 of IEC 6 0 0-3:2 1 a d b o s rv tio s th t te t re ults o tain d are within th lmits of

a plc ble S or X c ara teristic a d a plc ble c rv 1, 2 or 3, pro id d th t “U S” a d “store e erg mo e” are

re la e with “GC C” a d “mo e IV” re p ctiv ly

6 Hazard protection requireme ts

The provision of 4.3.2.2 of IEC 6 4 7-1:2 12/IEC 6 4 7-1:2 12/AMD1:2 16 s al a ply

6.3.2.3 Output s ort circ it c r e t abi ty

The provision of 4.3.2.3 of IEC 6 4 7-1:2 12 s al a ply

6.3.2.4 Combine input a d output ports

The provision of 4.3.2.4 of IEC 6 4 7-1:2 12 s al a ply

6.3.3 Short circ it co rdination (ba k p prote tion)

Ad , after Ta le 4, the senten e "The a pro riate con ition of Ta le 3 an 4 s al b

selected by the man facturer."

6.4.2.2.3 Limits of the workin volta e f or th DVC

6.4.5.3 Prote tiv s paration betwe n circ its

6.4.7.1.3 Ov rvolta e c te ory (OVC)

The provision of 4.4.7.1.3 of IEC 6 4 7-1:2 12 s al a ply, ex e t as fol ows:

Ad , in the secon p ragra h, af ter the senten e “Four categories are con idered.”, the

senten e “The man facturer or in taler s al select the a pro riate overvoltage category.”

6.4.7.1.4 Supply s stem e rthing

The provision of 4.4.7.1.4 of IEC 6 4 7-1:2 12 s al a ply

6.4.7.1.5 Determin tion of impuls withsta d volta e a d temporary ov rvolta e

The provision of 4.4.7.1.5 of IEC 6 4 7-1:2 12 s al a ply

6.4.7.1.6 Determination of the s stem volta e

The provision of 4.4.7.2.3 of IEC 6 4 7-1:2 12 s al a ply, ex e t as fol ows:

Re lace the seventh p ragra h, startin with “Prod ct commite s u in this stan ard .”, with

the senten e “The man facturer or in tal er s al select the a pro riate overvoltage category

6.4.7.9 Conne tion of parts of sol d ins lation (c me te joints)

6.6 Prote tion a ainst f ire a d th rmal hazards

6.6.1 Circ its repre e tin a f ire hazard

6.6.3 Fire e clos re

The provision of 4.6.3.1 of IEC 6 4 7-1:2 12 s al a ply, ex e t as f ol ows:

Re lace, in the first bul et p int of the secon p ragra h, “ he prod ct commit e ” by “ he

man facturer or in tal er”

6.6.3.2 Flammabi ity of e clos re materials

7.2.3.1 Prote tiv e uipote tial bon ing te ts (type te ts a d routine te t)

The provision of 5.2.4.2 of IEC 6 4 7-1:2 12/IEC 6 4 7-1:2 12/AMD1:2 16 s al a ply

7.2.4.3 Prote tiv e uipote tial bon ing s ort circ it withsta d te t (type te t)