IEC TS 62257-9-6:2008

Recommendations for small renewable energy and hybrid systems for rural electrification - Part 9-6: Integrated system - Selection of Photovoltaic Individual Electrification Systems (PV-IES)

IEC 62257-9-6:2008(E) proposes a simple selection procedure and cheap, comparative tests which can be performed in laboratories of developing countries, in order to identify the most suitable model of small Photovoltaic Individual Electrification Systems (PV- IES) up to 500 Wp for a particular rural electrification project from a number of products submitted for test. The tests provided in IEC 62257-9-6 allow assessment of the performance of a PV-IES according to the requirement of the general specification of the project (see IEC/TS 62257-2) and to verify their ability to provide the required service.

General Information

• Status: Published
• Publication Date: 18-Sep-2008
• ICS: 27.160 - Solar energy engineering
• ICS: 27.180 - Wind turbine energy systems
• Technical Committee: TC 82 - Solar photovoltaic energy systems
• Drafting Committee: JWG 1 - TC 82/JWG 1
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 26-Sep-2019

Relations

• Revised: IEC TS 62257-9-6:2019 - Renewable energy and hybrid systems for rural electrification - Part 9-6: Integrated systems - Recommendations for selection of Photovoltaic Individual Electrification Systems (PV-IES)
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC/TS 62257-9-6
Edition 1.0 2008-09
TECHNICAL
SPECIFICATION
Recommendations for small renewable energy and hybrid systems for rural
electrification –
Part 9-6: Integrated system – Selection of Photovoltaic Individual Electrification
Systems (PV-IES)
IEC/TS 62257-9-6:2008(E)
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IEC/TS 62257-9-6
Edition 1.0 2008-09
TECHNICAL
SPECIFICATION
Recommendations for small renewable energy and hybrid systems for rural
electrification –
Part 9-6: Integrated system – Selection of Photovoltaic Individual Electrification
Systems (PV-IES)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
W
ICS 27.160; 27.180 ISBN 2-8318-9997-4
– 2 – TS 62257-9-6 © IEC:2008(E)

CONTENTS
FOREWORD.4

INTRODUCTION.6

1 Scope.7

2 Normative references .7

3 Terms, definitions and abbreviated terms .8

3.1 Terms and definitions .8

3.2 Abbreviated terms .9

4 System boundaries.9
5 System pre-selection .9
5.1 Services to be provided by the system .9
5.2 Specification of a model .9
5.2.1 General operating conditions .9
5.2.2 Design.10
5.2.3 Components requirements.10
5.2.4 Safety issues.10
5.2.5 Installation rules .10
5.2.6 Operation and maintenance rules .10
5.2.7 Documentation and marking .11
5.3 Pre-selection process.11
5.3.1 Elements of the GS to be provided to potential suppliers .11
5.3.2 Answers to be provided by potential suppliers .11
5.3.3 Pre-selection criteria .11
6 Comparative tests .12
6.1 General .12
6.2 Service requirements .12
6.3 Service quality index .12
6.4 Testing programme .16
6.4.1 General .16
6.4.2 Test 1: initial inspection and commissioning .17
6.4.3 Test 2: ability to provide the required service under daylight
favourable conditions.18
6.4.4 Test 3: ability to provide the required service under daylight
unfavourable conditions.20

6.4.5 Test 4: final inspection.22
6.4.6 General conclusion.23
Annex A (informative) Data record sheet for visual inspection.25
Annex B (informative) Commissioning records sheet.26
Annex C (informative) Examples of load profiles for comparative tests.28
Annex D (informative) Instruction and data record sheet models (according to a load
profile as proposed in Annex A) .30
Bibliography.36

Figure 1 – Test 2, Phase A: initial charge cycles.19
Figure 2 – Test 2, Phase B: operating cycles .20
Figure 3 – Test 3, operating cycles .22

TS 62257-9-6 © IEC:2008(E) – 3 –

Table 1 – Climatic conditions (example).10

Table 2 – Suggested minimum values for IP and IK .10

Table 3 – Lighting service indexes .13

Table 4 – Radio / TV service indexes.14

Table 5 – Refrigeration service indexes .14

Table 6 – Testing programme .16

Table A.1 – Data record sheet for visual inspection (example) .25

Table B.1 – Commissioning records sheet (example).26

Table C.1 – Example of loads .28
Table C.2 – Example of small PV-IES loads (~50 Wp) .28
Table C.3 – Example of medium PV-IES loads (~200 Wp) .28
Table C.4 – Example of large PV-IES loads (~500 Wp).29
Table C.5 – Example of system load profile to perform test on PV-IES.29
Table D.1 – Overview instruction sheet for daily records (example) .30
Table D.2 – Record sheet for lighting service (example) .31
Table D.3 – Record sheet for radio service (example).32
Table D.4 – Record sheet for TV service (example) .33
Table D.5 – Record sheet for refrigeration service (example).34
Table D.6 – System daily quality index of service evaluation (example) .35

– 4 – TS 62257-9-6 © IEC:2008(E)

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
RECOMMENDATIONS FOR SMALL RENEWABLE ENERGY

AND HYBRID SYSTEMS FOR RURAL ELECTRIFICATION –

Part 9-6: Integrated system –
Selection of Photovoltaic Individual

Electrification Systems (PV-IES)

FOREWORD
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