Iec ts 62257 6 2015

The main tas of IEC tec nical commit e s is to pre are International Stan ard.. In ex e tional circ mstan es, a tec nical commit e may pro ose the publ cation of a tec nical sp cificatio

IEC TS 62257- 6

Editio 2.0 2 15-12

Recommendat ions for renew able energy and hybrid syst ems for rural

elect rificat ion –

Part 6: Accept ance, operat ion, maint enance and replacement

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IEC TS 62257- 6

Edit io 2.0 2 15-12

R ecommendat ions for renew able energy and hybrid syst ems for rural

elect rificat ion –

Part 6: Accept ance, operat ion, maint enance and replacement

INT ERNAT IONAL

ELECT ROT ECHNICAL

COMMIS ION

® R egist ered trademark of t he Int e ationalElectrot ec hnic al Com ision

®

W arnin ! Mak e s re t hat y ou o t ain d t his publ c tion from a a thorize distribut or

Interntio l Eletr ote nicl Com isio

FOREWORD 3

INTRODUCTION 5

1 Sco e 6

2 Normative ref eren e 6

3 Terms an def i ition 7

4 General asp cts 7

4.1 Introd ction to AOMR action 7

4.2 Con ition imp ctin AOMR action an g idelnes 10 4.2.1 Characteristic of the projects stems to b managed 10 4.2.2 Organization of AOMR p rson el an resp n ibi ties 10 4.2.3 Ne ded tec nical ca a i ties of AOMR p rticip nts 1

4.3 Trainin 12 5 Rules f or s stems 12 5.1 Sy tem identification an o erational data record ke pin 12 5 2 Organizational is ues 1

3 5.2.1 Sy tem l mit def i ition of the AOMR domain 13 5.2.2 Plan in of AOMR action 13 5.2.3 Trace bi ty of AOMR action 14 5.3 Tec nical is ues 14 5.4 Ac e tan e is ues 15 5.5 Recommen ed practices f or intervention 15 5.6 Maintenan e action 15 5.7 Re lacement f actors 16 5.8 Analy is of the conf ormity of the del vered service to the contractual commitments 16 6 Rules f or electric eq ipment 17 6.1 General asp cts 17 6.2 Sp cif i asp cts related to electric eq ipment 17 6.2.1 General 17 6.2.2 Ac e tan e test 18 6.2.3 Recommen ed practices for intervention 18 6.2.4 Maintenan e action 18 6.2.5 Re lacement factors 18 Biblogra h 2

Ta le 1 – AOMR action 8

Ta le 2 – Sy tem ac e tan e proces des ription 9

Ta le 3 – AOMR p rticip nt in olvement 10

Ta le 4 – L vels of s i for saf ety 12

Ta le 5 – L vels of general s i 12

Ta le 6 – Maintenan e action plan in -example 14

Ta le 7 – Voltage domain 14

Ta le 8 – Verification of the ad eren e to commitments 17

INTERNATIONAL ELECTROTECHNICAL COMMISSION

_

Part 6: A cceptance, operation, maintenance and replacement

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th later

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The main tas of IEC tec nical commit e s is to pre are International Stan ard In

ex e tional circ mstan es, a tec nical commit e may pro ose the publ cation of a tec nical

sp cification when

• the req ired s p ort can ot b o tained for the publ cation of an International Stan ard,

despite re e ted ef forts, or

• the s bject is sti u der tec nical develo ment or where, for any other re son, there is the

future but no immediate p s ibi ty of an agre ment on an International Stan ard

Tec nical sp cif i ation are s bject to review within thre ye rs of publ cation to decide

whether they can b tran f ormed into International Stan ard

IEC 6 2 7-6, whic is a tec nical sp cif i ation, has b en pre ared by IEC tec nical

commit e 8 : Solar photovoltaic energ s stems

Interntio l Eletr ote nicl Com isio

This secon edition can els an re laces the f irst edition is ued in 2 0 It con titutes a

tec nical revision

This edition in lu es the f ol owin sig if i ant tec nical c an es with resp ct to the previou

edition:

– redefine the maximum AC voltage f om 5 0 V to 1 0 0 V as wel as the maximum DC

voltage f rom 7 0 V to 1 5 0 V; an

– removal of the l mitation of the 10 kVA s stem size Hen e the removal of the word “smal ”

with regard to the title an related referen es in this doc ment

This tec nical sp cif i ation is to b u ed in conju ction with the IEC 6 2 7 series

The text of this tec nical sp cification is b sed on the fol owin doc ments:

En uiry draft Re ort o v tin

Ful information on the votin f or the a proval of this tec nical sp cification can b fou d in

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

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

A l st of al p rts in the IEC 6 2 7 series, publs ed u der the general title Re omme dat io s

for re ewa le e erg a d hybrid systems for rural electrific tion, can b f ou d on the IEC

we site

Future stan ard in this series wi car y the new general title as cited a ove Titles of existin

stan ard in this series wi b updated at the time of the next edition

The commit e has decided that the contents of this publ cation 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 the sp cif i publ cation At this date, the publ cation wi b

• tran f ormed into an International stan ard,

The IEC 6 2 7 series inten s to provide to diff erent players in olved in rural electrification

projects (s c as project implementers, project contractors, project s p rvisors, in tal ers,

etc.) doc ments for the set in up of renewa le energ an hybrid s stems with AC voltage

b low 1 0 0 V an DC voltage b low 1 5 0 V

These doc ments are recommen ation :

• to c o se the rig t s stem for the rig t place;

• to desig the s stem;

• to o erate an maintain the s stem

These doc ments are foc sed only on rural electrif i ation con entratin on, but not sp cific to,

develo in cou tries They s ould not b con idered as al in lu ive to rural electrification

The doc ments try to promote the u e of renewa le energies in rural electrif i ation; they do

not de l with cle n mec anisms develo ments at this time (CO

2emis ion, carb n credit, etc.)

Further develo ments in this f ield could b introd ced in future ste s

This con istent set of doc ments is b st con idered as a whole with diff erent p rts

cor esp n in to items f or safety as wel as s staina i ty of s stems aimin at the lowest l fe

c cle cost as p s ible One of the main o jectives is to provide the minimum s f ficient

req irements, relevant to the f ield of a pl cation, that is: renewa le energ an h brid of f-grid

s stems

The purp se of this tec nical sp cif i ation is to pro ose a methodolog to ac ieve the b st

tec nical an economic con ition for ac e tan e, o eration, maintenan e an re lacement

of eq ipment an complete s stem lfe c cle

Interntio l Eletr ote nicl Com isio

RECOMMENDA TIONS FOR RENEWA BLE ENERGY

Part 6: A cceptance, operation, maintenance and replacement

This p rt of IEC 6 2 7, whic is a tec nical sp cification, inten s to des rib the variou

rules to b a pl ed f or ac e tan e, o eration, maintenan e an re lacement (AOMR) of

decentral zed rural electrif i ation s stems (DRES) whic are desig ed to s p ly electric

p wer for sites whic are not con ected to a large intercon ected s stem, or a national grid,

in order to me t b sic ne d

The majority of these sites are:

• isolated dwel n s;

• vi age hou es;

• commu ity services (publ c l g tin , pumpin , he lth centers, places of wors ip or c ltural

activities, administrative bui din s, etc.);

• economic activities (work ho s, micro-in u try, etc.)

This tec nical sp cification pro oses a methodolog to ac ieve the b st tec nical an

economic con ition f or ac e tan e, o eration, maintenan e an re lacement of eq ipment

an complete s stem l fe c cle

It do s not s bstitute for tec nical man als provided by man facturers f or e c eq ipment

The complexity of the s stem an a plcation wi dictate the level of req ired AOMR

doc mentation

The f ol owin doc ments, in whole or in p rt, are normatively ref eren ed in this doc ment an

are in isp n a le f or its a pl cation For dated ref eren es, only the edition cited a ples For

u dated referen es, the latest edition of the referen ed doc ment (in lu in an

amen ments) a pl es

IEC 6 2 7 (al p rts), Re omme d at io s for re ewa le e erg a d hybrid systems for rural

ele trific t ion

IEC TS 6 2 7-1, Re omme dat io s for re ewa le e erg a d hybrid systems for rural

ele trific t io – P art 1: Ge eral introdu t io t o IEC 6 25 series a d rural ele trific t ion

IEC TS 6 2 7-2, Re omme dat ions for re ewa le e erg a d hybrid systems for rural

ele trific tion – P art 2: From re uireme ts to a ra g of electrific tio syst ems

IEC TS 6 2 7-3, Re omme dat ions for re ewa le e erg a d hybrid systems for rural

ele trific t ion – P art 3: P roje t d ev lopme t a d ma a eme t

IEC TS 6 2 7-4, Re omme dat io s for re ewa le e erg a d h brid systems for rural

ele trific t io – P art 4: System selection a d d esig

IEC TS 6 2 7-7, Re omme dat ions for re ewa le e erg a d hybrid syst ems for rural

ele trific t ion – P art 7 : Ge erat ors

IEC TS 6 2 7-8, Re omme dat io s for re ewa le e erg a d h brid systems for rural

ele trific t io – P art 8: Bat teries a d c nverters

IEC TS 6 2 7-9 (al p rts), Re omme d at ions for re ewa le e erg a d h brid syst ems for

rural electrific t ion – P art 9-XX: I nte rat ed systems

IEC TS 6 2 7-12-1, Re omme d at ions for re ewa le e erg a d h brid syst ems for rural

ele trific t io – Part 12-1: Selection of lamps a d lighting a p a c s for of-grid electricity

a c pta c , operation, mainte a c a d repla eme t a tion

key proces es that are req ired f or the overal s c es ful implementation of an isolated

electrification s stem

3.2

impleme tation contra t

contract b twe n project develo er an project implementer u ual y the res lt of a

comp titive sol citation for pro osals develo ed by the project develo er on the b sis of the

general sp cif i ation

3.3

ele tric e uipme t

item u ed for s c pup ses as generation, con ersion, tran mis ion, distribution or uti zation

of electric energ , s c as electric mac ines, tran f ormers, switc ge r an controlge r,

me s rin in truments, protective devices, wirin s stems, c r ent-u in eq ipment

4.1 Introduction to AOMR a tions

Isolated electrification s stems are desig ed to s p ly p wer to those in ivid als,

commu ities or lo d located in remote are s not con ected to national grid

These s stems can b broken down into thre categories:

• proces electrification s stems (for in tan e for pumpin );

• in ivid al electrification s stems (IES) (sin le u er, lo d or a pl cation);

Interntio l Eletr ote nicl Com isio

• col ective electrification s stems (CES) (multiple u er lo d or a pl cation).

In order to satisfy the variou energ req irements b th in terms of q al ty an q antity, six

typ s of isolated micro ower s stems have b en identified (se IEC 6 2 7-2)

AOMR action are introd ced in Ta le 1

A b sic s stem ac e tan e proces des ription is given in Ta le 2

Table 1 – AOMR a tions

Ac eptanc

• c e kin th pro e s to e s re th t th s stem in talatio me ts th re uireme t s t forth

in th impleme tatio c ntra t b twe n th proje t d v lo er a d th proje t impleme ter

• te tin th pro e s to e s re th t th micro ower s stem o erate a c rdin to th

f un tio al p rt of th impleme tatio c ntra t

• o c th p rtie h v c me to a re me t, tra sf er th re p n ibi ty of th s stem

Operatio

• ma a in th b sin s of s stem o eratio

• mo itorin "n rmal" s stem o eratio

(n rmal" o eratio = s stem s p le th p wer c mplyin with al th c ara teristic of

th e p cte s rvic , with th origin l d sig e c n g ratio )

• ma a in s stem ele tric l o eratio = e e utin a tio s o ele tric l circ its

(c n g ratio c a g s)

• re p n e to a n rmal o eratin c n itio s = to pro id s rvic o tsid of th b u d rie of

th impleme tatio c ntra t (prolo g d a s n e of REN s urc s)

• re p n e to a n rmal s stem o eratio

c re tiv a tio s (ma u l or a tomatic), tro ble h otin a d re air s stem or s stem

c mp n nts (dia n sin th c u e(s) f or f aiure); fa lt f i din = tos rvic th pla t a d

re tore its o eratin c n itio s folowin a u pre icta le faiure

• g ara te in s fety whie p rormin (s rvicin ) a tio s o th pla t

• p rormin a aly is a d retro t of th s stem to a c u t for n w o eratin c n itio s

Maintenanc

• pre e tiv mainte a c : k e in a d maintainin th s stem toits « ormal» o eratin

state

• c re tiv mainte a c : a ju tin , fixin or re la in c mp n nts after fa lt re o nitio

• c n u tin p rio ic te ts a d in p ctio

Repla ement

• re la in th e uipme t o « ormal» lfe c cle c mpletio

• re la in th e uipme t f or u gra in p rp s s

• disma tln a d re y ln at e d of lf e c cle

Table 2 – Sy tem a c pta c proc s de cription

party

Implementers Co tent of a su ge ted data she t

Ev lu tio of th c nf ormity of

th in tale s stem with th

Comp n nt b c mp n nt, v rif i atio :

Pro er ty e a d ref ere c a c rdin to th a b it lst

4.2 Conditions impa ting AOMR a tions a d guidel ne

4.2.1 Chara teristic of the proje t/s stems to be ma a e

The c aracteristic of s stems an their in tal ation en ironment wi have an influen e on the

organizational s hemes to p rf orm AOMR action

Amon these influen e factors the f ol owin are hig l g ted:

• ge gra hical layout: the n mb r of s stems, their location an disp rsion wi determine

sp re p rts an to l req irements, tec nician an eq ipment tran p rtation me n , me n

time to re air an p rha s the methodolog f or col ectin money;

• s stems size an tec nolog wi have an influen e on the maintenan e program, the s i

level of tec nician, an the final u er’s in olvement;

• the degre of multiple s stem stan ardization wi imp ct the trainin an s i levels f or

o erators an maintenan e staf;

• the imp rtan e of sp cific a pl cation (he lth, water pumpin , telecommu ication ) can

b con idered more critical an managed more caref ul y

4.2.2 Org nization of AOMR personnel a d re ponsibi tie

The fol owin diff erent p rties to b in olved in the rural energ s stems may b in olved in

• maintenan e contractor;

• trainin provider;

The sp cific roles of e c p rty are des rib d in gre ter detai in IEC TS 6 2 7-3

AOMR activities are disp tc ed ac ordin to the contractual resp n ibi ties of the diff erent

p rties as s own in Ta le 3, con iderin that one p rson may have several roles

Table 3 – AOMR participa t involv me t

proje t d v lo er’s re p n ibi ty, d fin s AOMR rule

a d le els whic wi alow th pro isio of this s rvic

Proje t impleme ter I Ma pro id inf ormatio rele a t to AOMR to th

proje t d v lo er